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{{Short description|Star in the constellation Corona Australis}}
{{Short description|Star in the constellation Corona Australis}}
{{Starbox begin|name=θ Corona Australis}}
{{Starbox begin
| name = [[Bayer designation|θ Corona Australis]]
}}
{{Starbox observe
{{Starbox observe
|epoch=[[J2000]]
| epoch = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
|constell=[[Corona Australis]]
| constell = [[Corona Australis]]
| ra = {{RA|18|33|30.18577}}<ref name = GaiaDR3/>
|ra={{RA|18|33|30.18626}}<ref name=HIP>{{cite journal|title=Validation of the new Hipparcos reduction|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357|s2cid=18759600}}</ref>
|dec={{DEC|-42|18|45.0335}}<ref name=HIP/>
| dec = {{DEC|−42|18|45.0297}}<ref name = GaiaDR3/>
|appmag_v=4.64<ref name=CADARS/>
| appmag_v = 4.61{{±|0.01}}<ref name = Tycho2000/>
}}
}}
{{Starbox character
{{Starbox character
|class=G5&nbsp;III<ref name=CADARS/>
| class = G8 III<ref name = Houk1978/>
| b-v = +1.02<ref name = Johnson1966/>
⚫
|b-v=+1.02<ref name=Johnson>{{cite journal|title=UBVRIJKL Photometry of the Bright Stars|author1=Johnson, H. L.|journal=Communications of the Lunar and Planetary Laboratory|volume=4|pages=99|date=1966|bibcode=1966CoLPL...4...99J}}</ref>
|u-b=+0.76<ref name=Johnson/>
| u-b = +0.76<ref name = Johnson1966/>
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v = −2.1{{±|2.8}}<ref name = Gontcharov2006/>
|radial_v={{Val|−2.1|2}}<ref name=GCRV>{{cite journal|title=General catalogue of stellar radial velocities|author=Wilson, Ralph Elmer|journal=Carnegie Institute Washington D.C. Publication |date=1953|bibcode=1953GCRV..C......0W}}</ref>
|prop_mo_ra=33.27<ref name=HIP/>
| prop_mo_ra = +32.046
|prop_mo_dec=-20.72<ref name=HIP/>
| prop_mo_dec = −20.932
| pm_footnote = <ref name = GaiaDR3/>
|parallax=5.85
| parallax = 6.1673
|p_error=0.27
| p_error = 0.1535
|parallax_footnote=<ref name=HIP/>
| parallax_footnote =
⚫
|absmag_v=−1.54<ref name=Anderson2012>{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }}</ref>
| absmag_v = −1.54<ref name = Anderson2012/>
}}
}}
{{Starbox detail
{{Starbox detail
| mass = 4.45{{±|0.22}}<ref name = Kervella2021/>
|radius=11<ref name=CADARS>{{cite journal|display-authors=1|author1=Pasinetti Fracassini, L. E.|author2=Pastori, L.|author3=Covino, S.|author4=Pozzi, A.|title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics|journal=Astronomy & Astrophysics|volume=367|pages=521–24|date=2001|issue=2|bibcode=2001A&A...367..521P|doi=10.1051/0004-6361:20000451|arxiv=astro-ph/0012289|s2cid=425754}}</ref>
| radius = 29.1{{±|1.5}}<ref name = Kervella2004/>
|temperature={{val|4794|+277|-179|fmt=commas}}<ref name=Ammons>{{cite journal|bibcode=2006ApJ...638.1004A|doi=10.1086/498490|arxiv=astro-ph/0510237|title=The N2K Consortium. IV. New Temperatures and Metallicities for More than 100,000 FGK Dwarfs|journal=The Astrophysical Journal|volume=638|issue=2|pages=1004–1017|year=2006|last1=Ammons|first1=S. Mark|last2=Robinson|first2=Sarah E.|last3=Strader|first3=Jay|last4=Laughlin|first4=Gregory|last5=Fischer|first5=Debra|last6=Wolf|first6=Aaron|s2cid=118834752}}</ref>
|luminosity=497<ref name=Anderson2012/>
| luminosity = 411{{±|21|19}}<ref name = GaiaDR3/>
| gravity = 2.50<ref name = Lafrasse2010/>
|rotational_velocity={{Val|11.8|1.0}}<ref name=deMedeiros>{{cite journal|bibcode=2014A&A...561A.126D|doi=10.1051/0004-6361/201220762|arxiv=1312.3474|title=A catalog of rotational and radial velocities for evolved stars|journal=Astronomy & Astrophysics|volume=561|pages=A126|year=2014|last1=De Medeiros|first1=J. R.|last2=Alves|first2=S.|last3=Udry|first3=S.|last4=Andersen|first4=J.|last5=Nordström|first5=B.|last6=Mayor|first6=M.|s2cid=54046583}}</ref>
| temperature = 4,907{{±|59}}<ref name = Blackwell1998/>
| metal_fe = +0.00<ref name = GaiaDR3/>
| rotational_velocity = 12{{±|1}}<ref name = "De Medeiros2014"/>
}}
}}
{{Starbox catalog
{{Starbox catalog
|names={{odlist|CD=-42° 13378|FK5=697|HD=170845|HIP=90982|HR=6951|SAO=229111}}<ref name=SIMBAD/>
| names = {{odlist|CD = −42°13378|FK5 = 697|HD = 170845|HIP = 90982|HR = 6951|SAO = 229111|CPD = −42°8423|GC = 25313|Gould = 15 G. Coronae Australis<ref name = Gould1879/>}}<ref name = SIMBAD/>
}}
}}
{{Starbox reference
{{Starbox reference
|Simbad=tet+CrA
| Simbad = tet+CrA
}}
}}
{{Starbox end}}
{{Starbox end}}
'''Theta Coronae Australis''', [[Latinisation of names|Latinized]] from θ Coronae Australis, is a [[star]] located in the [[constellation]] [[Corona Australis]]. Theta Coronae Australis is also known as '''HR 6951''', and '''HD 170845'''.<ref name=SIMBAD>{{cite simbad|title=* tet CrA|access-date=17 August 2017}}</ref> [[Stellar parallax|Parallax]] measurements by [[Hipparcos]] put it at a distance of roughly 560 light-years, or 171 parsecs, away from the [[Solar System]].<ref name=HIP/>
'''Theta Coronae Australis''' (Theta CrA), [[romanization of Greek|Latinized]] from '''θ Coronae Australis''', is a solitary yellow-hued [[star]]<ref name = Eggleton2008/> located in the southern[[constellation]] [[Corona Australis]]. It has an [[apparent magnitude]] of 4.61, making it readily visible to the [[naked eye]]. [[Gaia DR3]] [[parallax]] measurements place it 530 [[light year]]s away and it is currently drifting closer with a somewhat constrained heliocentric [[radial velocity]] of {{val|−2.1|ul=km/s}}. At its current distance, Theta CrA's brightness is diminished by three-tenths of a [[magnitude (astronomy)|magnitude]]s due to [[extinction (astronomy)|interstellar dust]].<ref name = Gontcharov2017/> It has an [[absolute magnitude]] of −1.54.<ref name = Anderson2012/>


This is an [[stellar evolution|evolved]] [[red giant]] with a [[stellar classification]] of G8 III. It has 4.45 times the [[mass of the Sun]]<ref name = Kervella2021/> but has expanded to 29.1 times the [[solar radius]].<ref name = Kervella2004/> It radiates 411 times the [[luminosity of the Sun]]<ref name = GaiaDR3/> from its enlarged [[photosphere]] at an [[effective temperature]] of {{val|4907|ul=K|fmt=commas}}.<ref name = Blackwell1998/> Theta CrA has a solar [[metallicity]];<ref name = GaiaDR3/> unlike most [[giant star]]s of this type, Theta CrA spins modestly with a [[projected rotational velocity]] of {{val|12|ul=km/s}}.<ref name = "De Medeiros2014"/> One possible reason for this is because the star may have [[infrared excess]] suggesting the presence of a [[circumstellar disk]].<ref name="da Silva2015"/>
Theta Coronae Australis is a [[G-type star|G-type]] [[giant star]] that is radiating 497<ref name=Anderson2012/> times the [[Sun's luminosity]] from its enlarged [[photosphere]] at an [[effective temperature]] of 4,794 K.<ref name=Ammons/> It has an [[apparent visual magnitude]] of 4.64,<ref name=CADARS/> and is about 11 times wider than the [[Sun]].<ref name=CADARS/> Theta Coronae Australis has an unusually high rate of rotation for an [[stellar evolution|evolved]] star of this type, showing a [[projected rotational velocity]] of 11.8&nbsp;km/s.<ref name=deMedeiros/> One possible explanation is that it may have engulfed a nearby [[giant planet]], such as a [[hot Jupiter]].<ref name=Silva>{{cite journal | title=On the Nature of Rapidly Rotating Single Evolved Stars | last1=Rodrigues da Silva | first1=R. | last2=Canto Martins | first2=B. L. | last3=De Medeiros | first3=J. R. | journal=The Astrophysical Journal | volume=801 | issue=1 | id=54 | pages=6 | date=March 2015 | doi=10.1088/0004-637X/801/1/54 | bibcode=2015ApJ...801...54R | arxiv=1503.03447 | s2cid=119271718 }}</ref>


== References ==
== References ==
{{reflist}}
{{reflist||refs=


<ref name = GaiaDR3>{{Cite DR3|6722114239093474048}}</ref>

⚫
<ref name = Johnson1966>{{cite journal | last1 = Johnson | first1 = H. L. | last2 = Mitchell | first2 = R. I. | last3 = Iriarte | first3 = B. | last4 = Wisniewski | first4 = W. Z. | title = UBVRIJKL Photometry of the Bright Stars | journal = Communications of the Lunar and Planetary Laboratory | year = 1966 | volume = 4 | pages = 99–110 | bibcode = 1966CoLPL...4...99J}}</ref>

<ref name = Tycho2000>{{cite journal | last1 = Høg | first1 = E. | last2 = Fabricius | first2 = C. | last3 = Makarov | first3 = V. V. | last4 = Urban | first4 = S. | last5 = Corbin | first5 = T. | last6 = Wycoff | first6 = G. | last7 = Bastian | first7 = U. | last8 = Schwekendiek | first8 = P. | last9 = Wicenec | first9 = A. | title = The Tycho-2 catalogue of the 2.5 million brightest stars |journal=Astronomy and Astrophysics | date = March 2000 | volume = 355 | pages = L27–L30 | bibcode = 2000A&A...355L..27H | issn = 0004-6361}}</ref>

<ref name = Houk1978>{{cite book |last1=Houk |first1=Nancy |title=Michigan catalogue of two-dimensional spectral types for the HD stars Volume II: Declinations −53° to −40° |year=1978 |bibcode=1978mcts.book.....H }}</ref>

<ref name = Gontcharov2006>{{cite journal | last1 = Gontcharov | first1 = G. A. | title = Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system | journal = Astronomy Letters | date = November 2006 | volume = 32 | issue = 11 | pages = 759–771 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773706110065 | pmid = | bibcode = 2006AstL...32..759G | arxiv = 1606.08053 | s2cid = 119231169 }}</ref>

⚫
<ref name = Anderson2012>{{cite journal | last1 = Anderson | first1 = E. | last2 = Francis | first2 = Ch. | title = XHIP: An extended hipparcos compilation | journal = Astronomy Letters | date = May 2012 | volume = 38 | issue = 5 | pages = 331–346 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773712050015 | bibcode = 2012AstL...38..331A | arxiv = 1108.4971| s2cid = 119257644 }}</ref>

<ref name = "De Medeiros2014">{{cite journal | last1 = De Medeiros | first1 = J. R. | last2 = Alves | first2 = S. | last3 = Udry | first3 = S. | last4 = Andersen | first4 = J. | last5 = Nordström | first5 = B. | last6 = Mayor | first6 = M. | title = A catalog of rotational and radial velocities for evolved stars V: Southern stars | journal = Astronomy & Astrophysics | date = January 2014 | volume = 561 | page = A126 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201220762 | bibcode = 2014A&A...561A.126D | arxiv = 1312.3474 | doi-access = free | s2cid = 54046583}}</ref>

<ref name = Kervella2004>{{cite journal | last1 = Kervella | first1 = P. | last2 = Thévenin | first2 = F. | last3 = Di Folco | first3 = E. | last4 = Ségransan | first4 = D. | title = The angular sizes of dwarf stars and subgiants | journal = Astronomy & Astrophysics | date = October 2004 | volume = 426 | issue = 1 | pages = 297–307 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361:20035930 | bibcode = 2004A&A...426..297K | arxiv = astro-ph/0404180 | doi-access = free}}</ref>

<ref name = Blackwell1998>{{cite journal | last1 = Blackwell | first1 = D. E. | last2 = Lynas-Gray | first2 = A. E. | title = Determination of the temperatures of selected ISO flux calibration stars using the Infrared Flux Method | journal = Astronomy and Astrophysics Supplement Series | date = May 1998 | volume = 129 | issue = 3 | pages = 505–515 | issn = 0365-0138 | eissn = 1286-4846 | doi = 10.1051/aas:1998202 | bibcode = 1998A&AS..129..505B| doi-access = free}}</ref>

<ref name = Kervella2021>{{cite journal | last1 = Kervella | first1 = Pierre | last2 = Arenou | first2 = Frédéric | last3 = Thévenin | first3 = Frédéric | title = Stellar and substellar companions from ''Gaia'' EDR3 | journal = Astronomy & Astrophysics | date = 20 December 2021 | volume = 657 | page = A7 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/202142146 | bibcode = 2022A&A...657A...7K | arxiv = 2109.10912 | doi-access = free}}</ref>

<ref name = Gould1879>{{cite journal | last = Gould | first = Benjamin Apthorp | title = Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas | journal = Resultados del Observatorio Nacional Argentino | volume = 1 | bibcode = 1879RNAO....1.....G | year = 1878}}</ref>

<ref name = Lafrasse2010>{{cite book |last1=Lafrasse |first1=Sylvain |last2=Mella |first2=Guillaume |last3=Bonneau |first3=Daniel |last4=Duvert |first4=Gilles |last5=Delfosse |first5=Xavier |last6=Chesneau |first6=Olivier |last7=Chelli |first7=Alain |title=Optical and Infrared Interferometry II |chapter=Building the 'JMMC Stellar Diameters Catalog' using SearchCal |date=16 July 2010 |volume=7734 |pages=77344E |doi=10.1117/12.857024 |bibcode=2010SPIE.7734E..4EL |arxiv=1009.0137|s2cid=32097037 }}</ref>

<ref name=SIMBAD>{{cite simbad|title=* tet CrA|access-date=17 August 2017}}</ref>

<ref name="da Silva2015">{{cite journal | last1 = da Silva | first1 = R. Rodrigues | last2 = Canto Martins | first2 = B. L. | last3 = De Medeiros | first3 = J. R. | title = On the Nature of Rapidly Rotating Single Evolved Stars | journal = The Astrophysical Journal | date = 4 March 2015 | volume = 801 | issue = 1 | page = 54 | eissn = 1538-4357 | doi = 10.1088/0004-637X/801/1/54 | bibcode = 2015ApJ...801...54R | arxiv = 1503.03447 | s2cid = 119271718 | doi-access = free}}</ref>

<ref name = Gontcharov2017>{{cite journal | last1 = Gontcharov | first1 = George A. | last2 = Mosenkov | first2 = Aleksandr V. | title = Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars | journal = Monthly Notices of the Royal Astronomical Society | date = 28 September 2017 | volume = 472 | issue = 4 | pages = 3805–3820 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1093/mnras/stx2219 | bibcode = 2017MNRAS.472.3805G | arxiv = 1709.01160 | doi-access = free}}</ref>

<ref name = Eggleton2008>{{cite journal | last1 = Eggleton | first1 = P. P. | last2 = Tokovinin | first2 = A. A. | title = A catalogue of multiplicity among bright stellar systems | journal = Monthly Notices of the Royal Astronomical Society | date = 11 September 2008 | volume = 389 | issue = 2 | pages = 869–879 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1111/j.1365-2966.2008.13596.x | bibcode = 2008MNRAS.389..869E | arxiv = 0806.2878 | s2cid = 14878976 | doi-access = free }}</ref>

}}
{{Stars of Corona Australis}}
{{Stars of Corona Australis}}


Revision as of 03:38, 29 January 2023

θ Corona Australis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Australis
Right ascension 18h 33m 30.18577s[1]
Declination −42° 18′ 45.0297″[1]
Apparent magnitude (V) 4.61±0.01[2]
Characteristics
Spectral type G8 III[3]
U−B color index +0.76[4]
B−V color index +1.02[4]
Astrometry
Radial velocity (Rv)−2.1±2.8[5] km/s
Proper motion (μ) RA: +32.046 mas/yr[1]
Dec.: −20.932 mas/yr[1]
Parallax (π)6.1673 ± 0.1535 mas
Distance530 ± 10 ly
(162 ± 4 pc)
Absolute magnitude (MV)−1.54[6]
Details
Mass4.45±0.22[7] M☉
Radius29.1±1.5[8] R☉
Luminosity411+21
−19[1] L☉
Surface gravity (log g)2.50[9] cgs
Temperature4,907±59[10] K
Metallicity [Fe/H]+0.00[1] dex
Rotational velocity (v sin i)12±1[11] km/s
Other designations
15 G. Coronae Australis[12], CD−42°13378, CPD−42°8423, FK5 697, GC 25313, HD 170845, HIP 90982, HR 6951, SAO 229111[13]
Database references
SIMBADdata

Theta Coronae Australis (Theta CrA), Latinized from θ Coronae Australis, is a solitary yellow-hued star[14] located in the southernconstellation Corona Australis. It has an apparent magnitude of 4.61, making it readily visible to the naked eye. Gaia DR3 parallax measurements place it 530 light years away and it is currently drifting closer with a somewhat constrained heliocentric radial velocity of −2.1 km/s. At its current distance, Theta CrA's brightness is diminished by three-tenths of a magnitudes due to interstellar dust.[15] It has an absolute magnitude of −1.54.[6]

This is an evolved red giant with a stellar classification of G8 III. It has 4.45 times the mass of the Sun[7] but has expanded to 29.1 times the solar radius.[8] It radiates 411 times the luminosity of the Sun[1] from its enlarged photosphere at an effective temperature of 4,907 K.[10] Theta CrA has a solar metallicity;[1] unlike most giant stars of this type, Theta CrA spins modestly with a projected rotational velocity of 12 km/s.[11] One possible reason for this is because the star may have infrared excess suggesting the presence of a circumstellar disk.[16]

References

  1. ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. ^ Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars Volume II: Declinations −53° to −40°. Bibcode:1978mcts.book.....H.
  4. ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
  6. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  7. ^ a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (20 December 2021). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  8. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361.
  9. ^ Lafrasse, Sylvain; Mella, Guillaume; Bonneau, Daniel; Duvert, Gilles; Delfosse, Xavier; Chesneau, Olivier; Chelli, Alain (16 July 2010). "Building the 'JMMC Stellar Diameters Catalog' using SearchCal". Optical and Infrared Interferometry II. Vol. 7734. pp. 77344E. arXiv:1009.0137. Bibcode:2010SPIE.7734E..4EL. doi:10.1117/12.857024. S2CID 32097037.
  10. ^ a b Blackwell, D. E.; Lynas-Gray, A. E. (May 1998). "Determination of the temperatures of selected ISO flux calibration stars using the Infrared Flux Method". Astronomy and Astrophysics Supplement Series. 129 (3): 505–515. Bibcode:1998A&AS..129..505B. doi:10.1051/aas:1998202. eISSN 1286-4846. ISSN 0365-0138.
  11. ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars V: Southern stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361. S2CID 54046583.
  12. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  13. ^ "* tet CrA". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 August 2017.
  14. ^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.
  15. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711.
  16. ^ da Silva, R. Rodrigues; Canto Martins, B. L.; De Medeiros, J. R. (4 March 2015). "On the Nature of Rapidly Rotating Single Evolved Stars". The Astrophysical Journal. 801 (1): 54. arXiv:1503.03447. Bibcode:2015ApJ...801...54R. doi:10.1088/0004-637X/801/1/54. eISSN 1538-4357. S2CID 119271718.
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