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புரோக்சிமா செண்ட்டாரி: திருத்தங்களுக்கு இடையிலான வேறுபாடு

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(5 பயனர்களால் செய்யப்பட்ட 8 இடைப்பட்ட திருத்தங்கள் காட்டப்படவில்லை.)
வரிசை 1: வரிசை 1:
{{Sky|14|29|42.9487|-|62|40|46.141|4.25}}
'''புரோக்சிமா செண்ட்டாரி''' (Proxima Centauri, அருகாமையில் இருப்பது) என்பது சூரிய மண்டலத்தின் சூரியனுக்கு மிக அருகாமையில் இருக்கும் [[விண்மீன்]]. இது ஒரு சிறு நட்சத்திரம் ஆகும். இது பூமியிலிருந்து 4.2 [[வெளிச்ச ஆண்டு]]கள் தூரத்தில் உள்ளது. புரோக்சிமா செண்ட்டாரி செங்குறளி (red dwarf) விண்மீன் வகையைச் சேர்ந்தது
{{Starbox begin
| name = Proxima Centauri
}}
{{Starbox image
| image = [[படிமம்:New shot of Proxima Centauri, our nearest neighbour.jpg|260px]]
| caption = [[False color]] [[ஹபிள் விண்வெளித் தொலைநோக்கி]] [[WFPC2]] image taken in 2013. The bright lines are [[diffraction spikes]].
}}
{{Starbox observe
| epoch = [[J2000.0]]
| equinox = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[Centaurus]]
| other names = Centauri C, Alpha Centauri C, Nearest Star
| pronounce = {{IPAc-en|ˌ|p|r|ɒ|k|s|ə|m|ə|_|s|ɛ|n|ˈ|t|ɔːr|i}} or<br />{{IPAc-en|ˈ|p|r|ɒ|k|s|ɪ|m|ə|_|s|ɛ|n|ˈ|t|ɔːr|aɪ}}<ref name=collinsdictionary>{{cite web
|url=https://www.collinsdictionary.com/dictionary/english/proxima-centauri |title=Collins English Dictionary |publisher=HarperCollins Publishers |access-date=30 September 2020}}</ref>
| ra = {{RA|14|29|42.94853}}<ref name="hipparcos">{{cite journal |bibcode=2007A&A...474..653V |title=Validation of the new Hipparcos reduction |journal=Astronomy and Astrophysics |volume=474 |issue=2 |pages=653–664 |last1=Van Leeuwen |first1=F. |year=2007 |doi=10.1051/0004-6361:20078357 |arxiv=0708.1752|s2cid=18759600 }}</ref>
| dec = {{DEC|−62|40|46.1631}}<ref name="hipparcos" />
| appmag_v = 10.43 – 11.11<ref name=Samus_et_al_2017 />
}}
{{Starbox character
| type = [[Main sequence]] ([[செங்குறுமீன்]])
| class = M5.5Ve<ref name=bessell>{{cite journal |bibcode=1991AJ....101..662B |title=The late-M dwarfs |journal=The Astronomical Journal |volume=101 |pages=662 |last1=Bessell |first1=M. S. |year=1991 |doi=10.1086/115714}}</ref>
| r-i = 2.04
| v-r = 1.68
| b-v = 1.82
| u-b = 1.26
| j-h = 0.522
| j-k = 0.973
| variable = [[Flare star|UV Cet]] + [[BY Draconis variable|BY Dra]]<ref name=Samus_et_al_2017>{{cite journal | title=General catalogue of variable stars | version=GCVS 5.1 | last1=Samus' | first1=N. N | last2=Kazarovets | first2=E. V | last3=Durlevich | first3=O. V | last4=Kireeva | first4=N. N | last5=Pastukhova | first5=E. N | journal=Astronomy Reports | volume=61 | issue=1 | pages=80 | year=2017 | bibcode=2017ARep...61...80S | s2cid=125853869 | doi=10.1134/S1063772917010085 }}</ref>
}}
{{Starbox astrometry
| radial_v = {{val|-22.204|0.032}}<ref name="KervellaThévenin2017">{{cite journal |last1=Kervella |first1=P. |last2=Thévenin |first2=F. |last3=Lovis |first3=C. |title=Proxima's orbit around α Centauri |journal=Astronomy & Astrophysics |volume=598 |year=2017 |pages=L7 |issn=0004-6361 |doi=10.1051/0004-6361/201629930 |arxiv=1611.03495 |bibcode=2017A&A...598L...7K|s2cid=50867264 }} Separation: 3.1, left column of page 3; Orbital period and epoch of periastron: Table 3, right column of page 3.</ref>
| prop_mo_ra = −3781.741<ref name="Gaia3" />
| prop_mo_dec = 769.465<ref name="Gaia3" />
| parallax = 768.0665
| p_error = 0.0499
| parallax_footnote = <ref name="Gaia3">{{cite Gaia EDR3|5853498713190525696}}</ref>
| absmag_v = 15.60<ref name="apj118">{{cite journal |last1=Benedict |first1=G. Fritz |last2=Chappell |first2=D. W. |last3=Nelan |first3=E. |last4=Jefferys |first4=W. H. |last5=Van Altena |first5=W. |last6=Lee |first6=J. |last7=Cornell |first7=D. |last8=Shelus |first8=P. J. |date=1999 |title=Interferometric astrometry of Proxima Centauri and Barnard's Star using Hubble Space Telescope fine guidance sensor 3: detection limits for substellar companions |url=https://archive.org/details/sim_astronomical-journal_1999-08_118_2/page/1086 |journal=The Astronomical Journal |volume=118 |issue=2 |pages=1086–1100 |arxiv=astro-ph/9905318 |bibcode=1999AJ....118.1086B |doi=10.1086/300975 |s2cid=18099356}}</ref>
}}
{{Starbox orbit
| reference = <ref name="KervellaThévenin2017" />
| primary = Alpha Centauri AB
| name = Proxima Centauri
| period = {{val|547000|6600|4000}}
| axis_unitless = {{val|8700|700|400|ul=AU}}
| eccentricity = {{val|0.50|0.08|0.09}}
| inclination = {{val|107.6|1.8|2.0}}
| node = {{val|126|5}}
| periastron = {{val|+283|59|41}}
| periarg = {{val|72.3|8.7|6.6}}
}}
{{Starbox detail
| mass = {{val|0.1221|0.0022}}<ref name="KervellaThévenin2017" />
| radius = {{val|0.1542|0.0045}}<ref name="KervellaThévenin2017" />
| luminosity_bolometric = 0.001567{{±|0.000020}}<ref name="Pineda2021">{{cite journal
| title=The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars
| last1=Pineda | first1=J. Sebastian | last2=Youngblood | first2=Allison
| last3=France | first3=Kevin
| journal=The Astrophysical Journal
| volume=918 | issue=1 | id=40 | pages=23 | date=September 2021
| doi=10.3847/1538-4357/ac0aea | arxiv=2106.07656
| bibcode=2021ApJ...918...40P | s2cid=235435757}}</ref>
| luminosity_visual = 0.00005<ref group=nb>From knowing the absolute visual magnitude of Proxima Centauri, <math>\scriptstyle M_{V_{\ast}} = 15.6</math>, and the absolute visual magnitude of the Sun, <math style="vertical-align:-36\%;">\scriptstyle M_{V_{\odot}} = 4.83</math>, the visual luminosity of Proxima Centauri can therefore be calculated: <math>\scriptstyle \frac{L_{V_{\ast}}}{L_{V_{\odot}}} = 10^{0.4\left(M_{V_{\odot}} - M_{V_{\ast}}\right)} = 4.92\times10^{-5}</math></ref>
| habitable_inner = <!--Inner limit to the star's habitable zone, where temperatures are 100˚ C-->
| habitable_outer = <!--Outer limit to the star's habitable zone, where temperatures are 0˚ C-->
| gravity = {{val|5.20|0.23}}<ref name="aaa397" />
| temperature = {{val|2992|49|47|fmt=commas}}<ref name="Pineda2021" />
| metal = <!-- generally, but not by everyone, assumed to be the same as Alpha Cen A/B -->
| metal_fe = 0.21<ref name="aaa519_A105" />{{#tag:ref|If Proxima Centauri was a later capture into the Alpha Centauri star system then its metallicity and age could be quite different to that of Alpha Centauri A and B. Through comparing Proxima Centauri to other similar stars it was estimated that it had a lower metallicity, ranging from less than a third, to about the same, of our Sun's.<ref name="PasseggerWende-von Berg2016" /><ref name="FengJones2018" />|group="nb"|name="alternate estimated metallicities"}}
| rotation = {{val|82.6|0.1}}<ref name="Collins2016" />&nbsp;days
| rotational_velocity = &lt;&nbsp;0.1<ref name="Collins2016">{{cite journal |title=Calculations of periodicity from Hα profiles of Proxima Centauri |journal=Astronomy & Astrophysics |first1=John M. |last1=Collins |first2=Hugh R. A. |last2=Jones |first3=John R. |last3=Barnes |volume=602 |at=A48 |date=June 2017 |doi=10.1051/0004-6361/201628827 |bibcode=2017A&A...602A..48C |arxiv=1608.07834|s2cid=18949162 }} See section 4: "the vsini is probably less than 0.1 km/s for Proxima Centauri".</ref>
| age_gyr = 4.85<ref name="ESO2003">{{cite news | last1=Kervella | first1=Pierre | last2=Thevenin | first2=Frederic |title=A family portrait of the Alpha Centauri system: VLT interferometer studies the nearest stars |publisher=European Southern Observatory |date=March 15, 2003 |url=https://www.eso.org/public/news/eso0307/ |access-date=May 10, 2016}}</ref>
}}
{{Starbox catalog
| names = {{odlist | name=Alf Cen C | B=Alpha Centauri C | CCDM=J14396-6050C | GCTP=3278.00 | GJ=551 | HIP=70890 | LFT=1110 | LHS=49 | LPM=526 | LTT=5721 | NLTT=37460 | V=V645 Centauri }}<ref name="SIMBAD">{{cite simbad |title=Proxima centauri | access-date=2022-04-28}}—some of the data is located under "Measurements".</ref>
}}
{{Starbox reference
| Simbad = V645+Cen
| ARICNS = 01140
}}
{{Starbox end}}


'''புரோக்சிமா செண்ட்டாரி''' (Proxima Centauri, அருகாமையில் இருப்பது) என்பது சூரிய மண்டலத்தின் சூரியனுக்கு மிக அருகில் இருக்கும் [[விண்மீன்]]. இது ஒரு சிறு நட்சத்திரம் ஆகும். இது பூமியிலிருந்து 4.2 [[வெளிச்ச ஆண்டு]]கள் தூரத்தில் உள்ளது. புரோக்சிமா செண்ட்டாரி செங்குறளி (red dwarf) விண்மீன் வகையைச் சேர்ந்தது
==வெளி இணைப்புகள்==

== Explanatory notes ==
{{Reflist|group="nb"}}

== உசாத்துணை ==
{{Reflist|colwidth=30em|refs=
<ref name="aaa397">{{cite journal |doi=10.1051/0004-6361:20021714 |last1=Ségransan |first1=Damien |last2=Kervella |first2=Pierre |last3=Forveille |first3=Thierry |last4=Queloz |first4=Didier |title=First radius measurements of very low mass stars with the VLTI |journal=Astronomy and Astrophysics |date=2003 |volume=397 |issue=3 |pages=L5–L8 |bibcode=2003A&A...397L...5S |arxiv=astro-ph/0211647 |s2cid=10748478 }}</ref>





















}}

== Further reading ==
{{Div col|small=yes}}
*{{cite journal
| title=Laser communication with Proxima and Alpha Centauri using the solar gravitational lens
| display-authors=1 | last1=Marcy | first1=Geoffrey W.
| last2=Tellis | first2=Nathaniel K. | last3=Wishnow | first3=Edward H.
| journal=Monthly Notices of the Royal Astronomical Society
| volume=509 | issue=3 | pages=3798–3814
| date=January 2022 | doi=10.1093/mnras/stab3074
| arxiv=2110.10247 | bibcode=2022MNRAS.509.3798M }}
*{{cite journal
| title=A radio technosignature search towards Proxima Centauri resulting in a signal of interest
| last1=Smith | first1=Shane | last2=Price | first2=Danny C.
| last3=Sheikh | first3=Sofia Z. | last4=Czech | first4=Daniel J.
| last5=Croft | first5=Steve | last6=DeBoer | first6=David
| last7=Gajjar | first7=Vishal | last8=Isaacson | first8=Howard
| last9=Lacki | first9=Brian C. | last10=Lebofsky | first10=Matt
| last11=MacMahon | first11=David H. E. | last12=Ng | first12=Cherry
| last13=Perez | first13=Karen I. | last14=Siemion | first14=Andrew P. V.
| last15=Webb | first15=Claire Isabel | last16=Drew | first16=Jamie
| last17=Worden | first17=S. Pete | last18=Zic | first18=Andrew
| display-authors=1 | journal=Nature Astronomy
| volume=5 | pages=1148–1152
| date=October 2021 | issue=11 | doi=10.1038/s41550-021-01479-w
| arxiv=2111.08007 | bibcode=2021NatAs...5.1148S | s2cid=239948037 }}
*{{cite journal
| title=A search for optical laser emission from Proxima Centauri
| last=Marcy | first=G. W.
| journal=Monthly Notices of the Royal Astronomical Society
| volume=505 | issue=3 | pages=3537–3548
| date=August 2021 | doi=10.1093/mnras/stab1440
| arxiv=2102.01910 | bibcode=2021MNRAS.505.3537M }}
*{{cite journal
| title=Planet-induced radio emission from the coronae of M dwarfs: the case of Prox Cen and AU Mic
| last1=Kavanagh | first1=Robert D. | last2=Vidotto | first2=Aline A.
| last3=Klein | first3=Baptiste | last4=Jardine | first4=Moira M.
| last5=Donati | first5=Jean-François | last6=Ó Fionnagáin | first6=Dúalta
| journal=Monthly Notices of the Royal Astronomical Society
| volume=504 | issue=1 | pages=1511–1518 | display-authors=1
| date=June 2021 | doi=10.1093/mnras/stab929
| arxiv=2103.16318 | bibcode=2021MNRAS.504.1511K }}
*{{cite journal
| title=Monitoring the radio emission of Proxima Centauri
| last1=Pérez-Torres | first1=M. | last2=Gómez | first2=J. F.
| last3=Ortiz | first3=J. L. | last4=Leto | first4=P.
| last5=Anglada | first5=G. | last6=Gómez | first6=J. L.
| last7=Rodríguez | first7=E. | last8=Trigilio | first8=C.
| last9=Amado | first9=P. J. | last10=Alberdi | first10=A.
| last11=Anglada-Escudé | first11=G. | last12=Osorio | first12=M.
| last13=Umana | first13=G. | last14=Berdiñas | first14=Z.
| last15=López-González | first15=M. J. | last16=Morales | first16=N.
| last17=Rodríguez-López | first17=C. | last18=Chibueze | first18=J.
| display-authors=1 | journal=Astronomy & Astrophysics
| volume=645 | id=A77 | date=January 2021
| pages=A77 | doi=10.1051/0004-6361/202039052
| arxiv=2012.02116 | bibcode=2021A&A...645A..77P | s2cid=227255606 }}
*{{cite journal
| title=The large-scale magnetic field of Proxima Centauri near activity maximum
| last1=Klein | first1=Baptiste | last2=Donati | first2=Jean-François
| last3=Hébrard | first3=Élodie M. | last4=Folsom | first4=Colin P.
| last5=Morin | first5=Julien | last6=Delfosse | first6=Xavier
| last7=Bonfils | first7=Xavier | display-authors=1
| journal=Monthly Notices of the Royal Astronomical Society
| volume=500 | issue=2 | pages=1844–1850
| date=January 2021 | doi=10.1093/mnras/staa3396
| arxiv=2010.14311 | bibcode=2021MNRAS.500.1844K }}
*{{cite journal
| title=A Flare-type IV Burst Event from Proxima Centauri and Implications for Space Weather
| last1=Zic | first1=Andrew | last2=Murphy | first2=Tara
| last3=Lynch | first3=Christene | last4=Heald | first4=George
| last5=Lenc | first5=Emil | last6=Kaplan | first6=David L.
| last7=Cairns | first7=Iver H. | last8=Coward | first8=David
| last9=Gendre | first9=Bruce | last10=Johnston | first10=Helen
| last11=MacGregor | first11=Meredith | last12=Price | first12=Danny C.
| last13=Wheatland | first13=Michael S. | display-authors=1
| journal=The Astrophysical Journal
| volume=905 | issue=1 | id=23
| date=December 2020 | page=23 | doi=10.3847/1538-4357/abca90
| arxiv=2012.04642 | bibcode=2020ApJ...905...23Z | s2cid=227745378 }}
*{{cite journal
| title=Proxima Centauri – the nearest planet host observed simultaneously with AstroSat, Chandra, and HST
| last1=Lalitha | first1=S. | last2=Schmitt | first2=J. H. M. M.
| last3=Singh | first3=K. P. | last4=Schneider | first4=P. C.
| last5=Parke Loyd | first5=R. O. | last6=France | first6=K.
| last7=Predehl | first7=P. | last8=Burwitz | first8=V.
| last9=Robrade | first9=J. | display-authors=1
| journal=Monthly Notices of the Royal Astronomical Society
| volume=498 | issue=3 | pages=3658–3663
| date=November 2020 | doi=10.1093/mnras/staa2574
| arxiv=2008.07175 | bibcode=2020MNRAS.498.3658L }}
*{{cite journal
| title=Flaring Activity of Proxima Centauri from TESS Observations: Quasiperiodic Oscillations during Flare Decay and Inferences on the Habitability of Proxima b
| last1=Vida | first1=Krisztián | last2=Oláh | first2=Katalin
| last3=Kővári | first3=Zsolt | last4=van Driel-Gesztelyi | first4=Lidia
| last5=Moór | first5=Attila | last6=Pál | first6=András
| display-authors=1 | journal=The Astrophysical Journal
| volume=884 | issue=2 | id=160
| date=October 2019 | page=160 | doi=10.3847/1538-4357/ab41f5
| arxiv=1907.12580 | bibcode=2019ApJ...884..160V | s2cid=198985707 }}
*{{cite journal
| title=Directly testing gravity with Proxima Centauri
| last1=Banik | first1=Indranil | last2=Kroupa | first2=Pavel
| journal=Monthly Notices of the Royal Astronomical Society
| volume=487 | issue=2 | pages=1653–1661
| date=August 2019 | doi=10.1093/mnras/stz1379
| arxiv=1906.08264 | bibcode=2019MNRAS.487.1653B }}
*{{cite journal
| title=Temporal changes of the flare activity of Proxima Centauri
| last1=Pavlenko | first1=Ya. V. | last2=Suárez Mascareño | first2=A.
| last3=Zapatero Osorio | first3=M. R. | last4=Rebolo | first4=R.
| last5=Lodieu | first5=N. | last6=Béjar | first6=V. J. S.
| last7=González Hernández | first7=J. I. | last8=Mohorian | first8=M.
| display-authors=1 | journal=Astronomy & Astrophysics
| volume=626 | id=A111 | date=June 2019
| pages=A111 | doi=10.1051/0004-6361/201834258 | arxiv=1905.07347
| bibcode=2019A&A...626A.111P | s2cid=158047128 }}
*{{cite journal
| title=A Multi-year Search for Transits of Proxima Centauri. II. No Evidence for Transit Events with Periods between 1 and 30 days
| last1=Feliz | first1=Dax L. | last2=Blank | first2=David L.
| last3=Collins | first3=Karen A. | last4=White | first4=Graeme L.
| last5=Stassun | first5=Keivan G. | last6=Curtis | first6=Ivan A.
| last7=Hart | first7=Rhodes | last8=Kielkopf | first8=John F.
| last9=Nelson | first9=Peter | last10=Relles | first10=Howard
| last11=Stockdale | first11=Christopher | last12=Jayawardene | first12=Bandupriya
| last13=Shankland | first13=Paul | last14=Reichart | first14=Daniel E.
| last15=Haislip | first15=Joshua B. | last16=Kouprianov | first16=Vladimir V.
| display-authors=1 | journal=The Astronomical Journal
| volume=157 | issue=6 | id=226
| date=June 2019 | page=226 | doi=10.3847/1538-3881/ab184f
| arxiv=1901.07034 | bibcode=2019AJ....157..226F }}
*{{cite journal
| title=Observation of a possible superflare on Proxima Centauri
| last1=Kielkopf | first1=John F. | last2=Hart | first2=Rhodes
| last3=Carter | first3=Bradley D. | last4=Marsden | first4=Stephen C.
| journal=Monthly Notices of the Royal Astronomical Society: Letters
| volume=486 | issue=1 | pages=L31–L35 | display-authors=1
| date=June 2019 | doi=10.1093/mnrasl/slz054
| arxiv=1904.06875 | bibcode=2019MNRAS.486L..31K }}
*{{cite journal
| title=Dynamical evolution and stability maps of the Proxima Centauri system
| last1=Meng | first1=Tong | last2=Ji | first2=Jianghui
| last3=Dong | first3=Yao | display-authors=1
| journal=Monthly Notices of the Royal Astronomical Society
| volume=482 | issue=1 | pages=372–383
| date=January 2019 | doi=10.1093/mnras/sty2682
| arxiv=1809.08210 | bibcode=2019MNRAS.482..372M }}
*{{cite journal
| title=Exocomets in the Proxima Centauri system and their importance for water transport
| last1=Schwarz | first1=R. | last2=Bazsó | first2=Á.
| last3=Georgakarakos | first3=N. | last4=Loibnegger | first4=B.
| last5=Maindl | first5=T. I. | last6=Bancelin | first6=D.
| last7=Pilat-Lohinger | first7=E. | last8=Kislyakova | first8=K. G.
| last9=Dvorak | first9=R. | last10=Dobbs-Dixon | first10=I.
| journal=Monthly Notices of the Royal Astronomical Society
| volume=480 | issue=3 | pages=3595–3608 | display-authors=1
| date=November 2018 | doi=10.1093/mnras/sty2064
| arxiv=1711.04685 | bibcode=2018MNRAS.480.3595S }}
*{{cite journal
| title=The First Naked-eye Superflare Detected from Proxima Centauri
| last1=Howard | first1=Ward S. | last2=Tilley | first2=Matt A.
| last3=Corbett | first3=Hank | last4=Youngblood | first4=Allison
| last5=Loyd | first5=R. O. Parke | last6=Ratzloff | first6=Jeffrey K.
| last7=Law | first7=Nicholas M. | last8=Fors | first8=Octavi
| last9=del Ser | first9=Daniel | last10=Shkolnik | first10=Evgenya L.
| last11=Ziegler | first11=Carl | last12=Goeke | first12=Erin E.
| last13=Pietraallo | first13=Aaron D. | last14=Haislip | first14=Joshua
| journal=The Astrophysical Journal Letters
| volume=860 | issue=2 | id=L30 | display-authors=1
| date=June 2018 | pages=L30 | doi=10.3847/2041-8213/aacaf3
| arxiv=1804.02001 | bibcode=2018ApJ...860L..30H | s2cid=59127420 }}
*{{cite journal
| title=Detection of a Millimeter Flare from Proxima Centauri
| last1=MacGregor | first1=Meredith A. | last2=Weinberger | first2=Alycia J.
| last3=Wilner | first3=David J. | last4=Kowalski | first4=Adam F.
| last5=Cranmer | first5=Steven R. | display-authors=1
| journal=The Astrophysical Journal Letters
| volume=855 | issue=1 | id=L2
| date=March 2018 | pages=L2 | doi=10.3847/2041-8213/aaad6b
| arxiv=1802.08257 | bibcode=2018ApJ...855L...2M | s2cid=119287614 }}
*{{cite journal
| title=Proxima Centauri reloaded: Unravelling the stellar noise in radial velocities
| last1=Damasso | first1=M. | last2=Del Sordo | first2=F.
| journal=Astronomy & Astrophysics
| volume=599 | id=A126 | date=March 2017
| pages=A126 | doi=10.1051/0004-6361/201630050 | arxiv=1612.03786
| bibcode=2017A&A...599A.126D | s2cid=119335949 }}
{{Div col end}}

== வெளி இணைப்புகள் ==
{{Commons category|Proxima Centauri|புரோக்சிமா செண்ட்டாரி}}
{{Commons category|Proxima Centauri|புரோக்சிமா செண்ட்டாரி}}
* {{Cite APOD |title=Proxima Centauri: the closest star |date=July 15, 2002 |access-date=June 25, 2008}}
* {{cite web |url=https://chandra.harvard.edu/photo/2004/proxima/ |title=Proxima Centauri: The Nearest Star to the Sun |agency=Chandra X-ray Observatory |publisher=Harvard University |date=July 1, 2008 |access-date=July 1, 2008}}
* {{cite web |url=http://www.southastrodel.com/PageAlphaCen006.htm |title=Voyage to Alpha Centauri |series=The Imperial Star – Alpha Centauri |publisher=Southern Astronomical Delights |last=James |first=Andrew |date=March 11, 2008 |access-date=August 5, 2008}}
* {{cite web |url=http://www.solstation.com/stars/alp-cent3.htm |title=Alpha Centauri 3 |work=SolStation |access-date=August 5, 2008}}
* {{cite web |url=http://www.uranometrianova.pro.br/astronomia/AA002/alphacen.htm |title=O Sistema Alpha Centauri |access-date=June 25, 2008 |work=Astronomia & Astrofísica |language=pt |archive-date=3 March 2016 |archive-url=https://web.archive.org/web/20160303190444/http://www.uranometrianova.pro.br/astronomia/AA002/alphacen.htm |url-status=dead }}
* {{cite web |url=http://www.wikisky.org/?ra=14.495264&de=-62.67948000000001&zoom=8&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=0&show_galaxies=1&show_box=1&box_ra=14.495264&box_de=-62.67948&box_width=50&box_height=50&img_source=DSS2 |title=Image of Proxima Centauri |work=Wikisky |access-date=July 1, 2017}}
* {{cite web |url=http://www.constellation-guide.com/proxima-centauri/ |title=Proxima Centauri |website=Constellation-guide.com |access-date=August 25, 2016}}
* {{cite web |url=http://www.eso.org/public/news/eso1629/ |title=Planet Found in Habitable Zone Around Nearest Star |publisher=[[European Southern Observatory]] |date=August 24, 2016 |access-date=September 6, 2016}}
* {{cite news |url=https://www.space.com/33834-discovery-of-planet-proxima-b.html |title=Found! Potentially Earth-Like Planet at Proxima Centauri Is Closest Ever |work=[[Space.com]] |first=Mike |last=Wall |date=April 24, 2016}}


[[பகுப்பு:M வகை முதன்மை வரிசை விண்மீன்கள்]]
{{வானியல்-குறுங்கட்டுரை}}
[[பகுப்பு:விண்மீன்கள்]]
{{Link FA|cs}}

23:49, 23 ஆகத்து 2023 இல் கடைசித் திருத்தம்

ஆள்கூறுகள்: Sky map 14h 29m 42.9487s, −62° 40′ 46.141″

Proxima Centauri
நோக்கல் தரவுகள்
ஊழி J2000.0      Equinox J2000.0 (ICRS)
பேரடை Centaurus
ஒலிப்பு/ˌprɒksəmə sɛnˈtɔːri/ or
/ˈprɒksɪmə sɛnˈtɔːraɪ/[1]
வல எழுச்சிக் கோணம் 14h 29m 42.94853s[2]
நடுவரை விலக்கம் −62° 40′ 46.1631″[2]
தோற்ற ஒளிப் பொலிவு (V)10.43 – 11.11[3]
இயல்புகள்
விண்மீன் வகைM5.5Ve[4]
U−B color index1.26
B−V color index1.82
V−R color index1.68
R−I color index2.04
J−H color index0.522
J−K color index0.973
மாறுபடும் விண்மீன்UV Cet + BY Dra[3]
வான்பொருளியக்க அளவியல்
ஆரை வேகம் (Rv)−22.204±0.032[5] கிமீ/செ
Proper motion (μ) RA: −3781.741[6] மிஆசெ/ஆண்டு
Dec.: 769.465[6] மிஆசெ/ஆண்டு
இடமாறுதோற்றம் (π)768.0665 ± 0.0499[6] மிஆசெ
தூரம்4.2465 ± 0.0003 ஒஆ
(1.30197 ± 0 பார்செக்)
தனி ஒளி அளவு (MV)15.60[7]
சுற்றுப்பாதை[5]
PrimaryAlpha Centauri AB
CompanionProxima Centauri
Period (P)547000+6600
−4000 yr
Semi-major axis (a)8700+700
−400 AU
Eccentricity (e)0.50+0.08
−0.09
Inclination (i)107.6+1.8
−2.0°
Longitude of the node (Ω)126±5°
சுற்றுப்பாதை வீச்சு epoch (T)+283+59
−41
Argument of periastron (ω)
(secondary)		72.3+8.7
−6.6°
விவரங்கள்
திணிவு0.1221±0.0022[5] M☉
ஆரம்0.1542±0.0045[5] R☉
மேற்பரப்பு ஈர்ப்பு (மட. g)5.20±0.23[8]
ஒளிர்வு (வெப்பவீச்சுசார்)0.001567±0.000020[9] L☉
ஒளிர்வு (பார்வைக்குரிய, LV)0.00005[nb 1] L☉
வெப்பநிலை2,992+49
−47[9] கெ
சுழற்சி82.6±0.1[10] days
சுழற்சி வேகம் (v sin i)< 0.1[10] கிமீ/செ
அகவை4.85[11] பில்.ஆ
வேறு பெயர்கள்
Alf Cen C, Alpha Centauri C, V645 Centauri, GJ 551, HIP 70890, CCDM J14396-6050C, LFT 1110, LHS 49, LPM 526, LTT 5721, NLTT 37460[12]
தரவுதள உசாத்துணைகள்
SIMBADdata
ARICNSdata

புரோக்சிமா செண்ட்டாரி (Proxima Centauri, அருகாமையில் இருப்பது) என்பது சூரிய மண்டலத்தின் சூரியனுக்கு மிக அருகில் இருக்கும் விண்மீன். இது ஒரு சிறு நட்சத்திரம் ஆகும். இது பூமியிலிருந்து 4.2 வெளிச்ச ஆண்டுகள் தூரத்தில் உள்ளது. புரோக்சிமா செண்ட்டாரி செங்குறளி (red dwarf) விண்மீன் வகையைச் சேர்ந்தது

Explanatory notes

[தொகு]
  1. ↑ From knowing the absolute visual magnitude of Proxima Centauri, , and the absolute visual magnitude of the Sun, , the visual luminosity of Proxima Centauri can therefore be calculated:

உசாத்துணை

[தொகு]
  1. ↑ "Collins English Dictionary". HarperCollins Publishers. பார்க்கப்பட்ட நாள் 30 September 2020.
  2. ↑ 2.0 2.1 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. 
  3. ↑ 3.0 3.1 Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017). "General catalogue of variable stars". Astronomy Reports. GCVS 5.1 61 (1): 80. doi:10.1134/S1063772917010085. Bibcode: 2017ARep...61...80S. 
  4. ↑ Bessell, M. S. (1991). "The late-M dwarfs". The Astronomical Journal 101: 662. doi:10.1086/115714. Bibcode: 1991AJ....101..662B. 
  5. ↑ 5.0 5.1 5.2 5.3 Kervella, P.; Thévenin, F.; Lovis, C. (2017). "Proxima's orbit around α Centauri". Astronomy & Astrophysics 598: L7. doi:10.1051/0004-6361/201629930. பன்னாட்டுத் தர தொடர் எண்:0004-6361. Bibcode: 2017A&A...598L...7K.  Separation: 3.1, left column of page 3; Orbital period and epoch of periastron: Table 3, right column of page 3.
  6. ↑ 6.0 6.1 6.2 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G.  (Erratum: எஆசு:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  7. ↑ Benedict, G. Fritz; Chappell, D. W.; Nelan, E.; Jefferys, W. H.; Van Altena, W.; Lee, J.; Cornell, D.; Shelus, P. J. (1999). "Interferometric astrometry of Proxima Centauri and Barnard's Star using Hubble Space Telescope fine guidance sensor 3: detection limits for substellar companions". The Astronomical Journal 118 (2): 1086–1100. doi:10.1086/300975. Bibcode: 1999AJ....118.1086B. https://archive.org/details/sim_astronomical-journal_1999-08_118_2/page/1086. 
  8. ↑ Ségransan, Damien; Kervella, Pierre; Forveille, Thierry; Queloz, Didier (2003). "First radius measurements of very low mass stars with the VLTI". Astronomy and Astrophysics 397 (3): L5–L8. doi:10.1051/0004-6361:20021714. Bibcode: 2003A&A...397L...5S. 
  9. ↑ 9.0 9.1 Pineda, J. Sebastian; Youngblood, Allison; France, Kevin (September 2021). "The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars". The Astrophysical Journal 918 (1): 23. doi:10.3847/1538-4357/ac0aea. 40. Bibcode: 2021ApJ...918...40P. 
  10. ↑ 10.0 10.1 Collins, John M.; Jones, Hugh R. A.; Barnes, John R. (June 2017). "Calculations of periodicity from Hα profiles of Proxima Centauri". Astronomy & Astrophysics 602: A48. doi:10.1051/0004-6361/201628827. Bibcode: 2017A&A...602A..48C.  See section 4: "the vsini is probably less than 0.1 km/s for Proxima Centauri".
  11. ↑ Kervella, Pierre; Thevenin, Frederic (March 15, 2003). "A family portrait of the Alpha Centauri system: VLT interferometer studies the nearest stars". European Southern Observatory. https://www.eso.org/public/news/eso0307/. 
  12. ↑ "Proxima centauri". SIMBAD. Centre de données astronomiques de Strasbourg. பார்க்கப்பட்ட நாள் 2022-04-28.—some of the data is located under "Measurements".

Further reading

[தொகு]
  • Marcy, Geoffrey W. et al. (January 2022). "Laser communication with Proxima and Alpha Centauri using the solar gravitational lens". Monthly Notices of the Royal Astronomical Society 509 (3): 3798–3814. doi:10.1093/mnras/stab3074. Bibcode: 2022MNRAS.509.3798M. 
  • Smith, Shane et al. (October 2021). "A radio technosignature search towards Proxima Centauri resulting in a signal of interest". Nature Astronomy 5 (11): 1148–1152. doi:10.1038/s41550-021-01479-w. Bibcode: 2021NatAs...5.1148S. 
  • Marcy, G. W. (August 2021). "A search for optical laser emission from Proxima Centauri". Monthly Notices of the Royal Astronomical Society 505 (3): 3537–3548. doi:10.1093/mnras/stab1440. Bibcode: 2021MNRAS.505.3537M. 
  • Kavanagh, Robert D. et al. (June 2021). "Planet-induced radio emission from the coronae of M dwarfs: the case of Prox Cen and AU Mic". Monthly Notices of the Royal Astronomical Society 504 (1): 1511–1518. doi:10.1093/mnras/stab929. Bibcode: 2021MNRAS.504.1511K. 
  • Pérez-Torres, M. et al. (January 2021). "Monitoring the radio emission of Proxima Centauri". Astronomy & Astrophysics 645: A77. doi:10.1051/0004-6361/202039052. A77. Bibcode: 2021A&A...645A..77P. 
  • Klein, Baptiste et al. (January 2021). "The large-scale magnetic field of Proxima Centauri near activity maximum". Monthly Notices of the Royal Astronomical Society 500 (2): 1844–1850. doi:10.1093/mnras/staa3396. Bibcode: 2021MNRAS.500.1844K. 
  • Zic, Andrew et al. (December 2020). "A Flare-type IV Burst Event from Proxima Centauri and Implications for Space Weather". The Astrophysical Journal 905 (1): 23. doi:10.3847/1538-4357/abca90. 23. Bibcode: 2020ApJ...905...23Z. 
  • Lalitha, S. et al. (November 2020). "Proxima Centauri – the nearest planet host observed simultaneously with AstroSat, Chandra, and HST". Monthly Notices of the Royal Astronomical Society 498 (3): 3658–3663. doi:10.1093/mnras/staa2574. Bibcode: 2020MNRAS.498.3658L. 
  • Vida, Krisztián et al. (October 2019). "Flaring Activity of Proxima Centauri from TESS Observations: Quasiperiodic Oscillations during Flare Decay and Inferences on the Habitability of Proxima b". The Astrophysical Journal 884 (2): 160. doi:10.3847/1538-4357/ab41f5. 160. Bibcode: 2019ApJ...884..160V. 
  • Banik, Indranil; Kroupa, Pavel (August 2019). "Directly testing gravity with Proxima Centauri". Monthly Notices of the Royal Astronomical Society 487 (2): 1653–1661. doi:10.1093/mnras/stz1379. Bibcode: 2019MNRAS.487.1653B. 
  • Pavlenko, Ya. V. et al. (June 2019). "Temporal changes of the flare activity of Proxima Centauri". Astronomy & Astrophysics 626: A111. doi:10.1051/0004-6361/201834258. A111. Bibcode: 2019A&A...626A.111P. 
  • Feliz, Dax L. et al. (June 2019). "A Multi-year Search for Transits of Proxima Centauri. II. No Evidence for Transit Events with Periods between 1 and 30 days". The Astronomical Journal 157 (6): 226. doi:10.3847/1538-3881/ab184f. 226. Bibcode: 2019AJ....157..226F. 
  • Kielkopf, John F. et al. (June 2019). "Observation of a possible superflare on Proxima Centauri". Monthly Notices of the Royal Astronomical Society: Letters 486 (1): L31–L35. doi:10.1093/mnrasl/slz054. Bibcode: 2019MNRAS.486L..31K. 
  • Meng, Tong et al. (January 2019). "Dynamical evolution and stability maps of the Proxima Centauri system". Monthly Notices of the Royal Astronomical Society 482 (1): 372–383. doi:10.1093/mnras/sty2682. Bibcode: 2019MNRAS.482..372M. 
  • Schwarz, R. et al. (November 2018). "Exocomets in the Proxima Centauri system and their importance for water transport". Monthly Notices of the Royal Astronomical Society 480 (3): 3595–3608. doi:10.1093/mnras/sty2064. Bibcode: 2018MNRAS.480.3595S. 
  • Howard, Ward S. et al. (June 2018). "The First Naked-eye Superflare Detected from Proxima Centauri". The Astrophysical Journal Letters 860 (2): L30. doi:10.3847/2041-8213/aacaf3. L30. Bibcode: 2018ApJ...860L..30H. 
  • MacGregor, Meredith A. et al. (March 2018). "Detection of a Millimeter Flare from Proxima Centauri". The Astrophysical Journal Letters 855 (1): L2. doi:10.3847/2041-8213/aaad6b. L2. Bibcode: 2018ApJ...855L...2M. 
  • Damasso, M.; Del Sordo, F. (March 2017). "Proxima Centauri reloaded: Unravelling the stellar noise in radial velocities". Astronomy & Astrophysics 599: A126. doi:10.1051/0004-6361/201630050. A126. Bibcode: 2017A&A...599A.126D. 

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[தொகு]
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