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For a 4th magnitude star it is little-studied!
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}}
{{Starbox observe
{{Starbox observe
| epoch = [[J2000.0]]
| epoch = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| equinox = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[Corona Australis (constellation)|Corona Australis]]
| constell = [[Corona Australis (constellation)|Corona Australis]]
| ra = {{RA|19|10|01.75580}}<ref name=vanLeeuwen2007/>
| ra = {{RA|19|10|01.75580}}<ref name=vanLeeuwen2007/>
| dec = {{DEC|−39|20|26.8644}}<ref name=vanLeeuwen2007/>
| dec = {{DEC|−39|20|26.8644}}<ref name=vanLeeuwen2007/>
| appmag_v = 4.10<ref name=Anderson2012/>
| appmag_v = 4.10{{±|0.01}}<ref name = Tycho2000/>
}}
}}
{{Starbox character
{{Starbox character
| class = K0II/IIICNIb<ref name=Anderson2012/>
| class = K0 II/III CNIb<ref name = Houk1982/>
| u-b = +1.07<ref name=bsc1/>
| u-b = +1.07<ref name = Johnson1966/>
| b-v = +1.20<ref name=bsc1 />
| b-v = +1.20<ref name = Johnson1966/>
| r-i = +0.61<ref name=bsc1 />
| r-i = +0.61<ref name = Johnson1966/>
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v = {{Val|2.7|0.9}}<ref name=Anderson2012/>
| radial_v = 2.7{{±|0.7}}<ref name = Gontcharov2006/>
| prop_mo_ra = 4.37<ref name=vanLeeuwen2007/>
| prop_mo_ra = +4.37
| prop_mo_dec = −36.65<ref name=vanLeeuwen2007/>
| prop_mo_dec = −36.65
| pm_footnote = <ref name=vanLeeuwen2007/>
| parallax = 6.88
| parallax = 6.88
| p_error = 0.25
| p_error = 0.25
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}}
}}
{{Starbox detail
{{Starbox detail
| radius = {{Val|41.07|4.32|3.76}}<ref name=GaiaDR2/>
| radius = 38.5{{±|1.9}}<ref name = Kervella2004/>
| mass =
| mass = 5.17{{±|0.26}}<ref name = Kervella2021/>
| temperature = 4,771<ref name=Mcdonald/>
| temperature = 4,575{{±|55}}<ref name = Blackwell1998/>
| gravity =
| gravity = 1.26<ref name = Anders2019/>
| metal_fe =
| metal_fe = +0.24<ref name = Anders2019/>
| luminosity = 693.5<ref name=Anderson2012/>
| luminosity = 614{{±|33}}<ref name=GaiaDR2/>
| rotational_velocity =
| rotational_velocity = 6.2{{±|2}}<ref name = DeMed2014/>
| age_myr =
| age_myr =
}}
}}
{{Starbox catalog
{{Starbox catalog
| names = {{odlist | B=β&nbsp;CrA | CD=−39°13146 | CPD=−39°8327 | HD=178345 | HIP=94160 | HR=7259 | SAO=211005 | GC=26380 | PPM=298639 }}<ref name=sb0/>
| names = {{odlist|B = β CrA|Gould = 46 G. Coronae Australis<ref name = Gould1879/>|CD = −39°13146|CPD = −39°8327|HD = 178345|HIP = 94160|HR = 7259|SAO = 211005|GC = 26380|PPM = 298639 }}<ref name=sb0/>
}}
}}
{{Starbox reference
{{Starbox reference
Line 52: Line 52:
{{Starbox end}}
{{Starbox end}}


'''Beta&nbsp;Coronae&nbsp;Australis''', [[Latinisation of names|Latinized]] from '''β&nbsp;Coronae&nbsp;Australis''', is a single<ref name=Eggleton2008/> [[star]] in the southern [[constellation]] of [[Corona Australis (constellation)|Corona Australis]].<ref name=sb0 /> It is visible to the naked eye as a faint, orange-hued star with an [[apparent visual magnitude]] of 4.10.<ref name=Anderson2012/> The star is located around 470&nbsp;[[light years]] distant from the Sun based on [[stellar parallax|parallax]],<ref name=vanLeeuwen2007/> and is drifting further away with a [[radial velocity]] of +3&nbsp;km/s.<ref name=Anderson2012/>
'''Beta Coronae Australis''' (Beta CrA), [[Latinisation of names|Latinized]] from '''β&nbsp;Coronae Australis''', is a solitary [[star]]<ref name=Eggleton2008/> located in the southern [[constellation]] [[Corona Australis (constellation)|Corona Australis]]. It is visible to the naked eye as a faint, orange-hued star with an [[apparent visual magnitude]] of 4.10.<ref name = Tycho2000/> The star is located around 470 [[light years]] distant from the Sun based on [[stellar parallax|parallax]],<ref name=vanLeeuwen2007/> and is drifting further away with a [[radial velocity]] of {{val|2.7|ul=km/s}}.<ref name = Gontcharov2006/> At its current distance, Beta CrA's brightness is diminished by 0.29 [[magnitude (astronomy)|magnitude]]s due to [[extinction (astronomy)|interstellar dust]].<ref name = Gontcharov2017/>


This is an aging [[K-type star|K-type]] [[giant star|giant]]/[[bright giant]] star with a [[stellar classification]] of K0II/IIICNIb,<ref name=Anderson2012/> where the suffix notation indicates an abundance anomaly of [[Cyano radical|CN]] in the [[stellar spectrum|spectrum]]. Having exhausted the supply of hydrogen at its [[stellar core|core]], the star has expanded to 41 times the girth of the Sun.<ref name=GaiaDR2/> It shines with a [[luminosity]] approximately 694<ref name=Anderson2012/> times that of the Sun and has a surface temperature of 4,771&nbsp;K.<ref name=Mcdonald/>
Beta CrA has a [[stellar classification]] of K0 II/III CNIb,<ref name = Houk1982/> indicating that it is an [[stellar evolution|evolved]] [[K-type star]] with the blended [[luminosity class]] of a [[bright giant]] and a regular [[giant star]]. The suffix ''CNIb'' states that the object has an anomalous overabundance of [[Cyano radical]]s in the [[stellar spectrum|spectrum]], making it a [[CN star]]. Having exhausted the supply of hydrogen at its [[stellar core|core]], the star has expanded to 39 times the [[Solar radius|Sun's girth]].<ref name=GaiaDR2/> It has 5.17 times the [[mass of the Sun]] shines with a [[luminosity]] 614 times that of the Sun<ref name=GaiaDR2/> from its [[photosphere at a [[effective temperature|surface temperature]] of {{val|4575|ul=K|fmt=commas}}.<ref name = Blackwell1998/> Beta CrA is metal enriched (174% solar [[iron]] abundance<ref name = Anders2019/>) and spins modestly with a [[projected rotational velocity]] of {{val|6.2|ul=km/s}}.<ref name = DeMed2014/>


==References==
==References==
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<ref name=sb0>{{SIMBAD link|bet+CrA|* bet CrA -- Star}}, database entry, [[SIMBAD]]. Accessed on line September 5, 2008.</ref>
<ref name=sb0>{{SIMBAD link|bet+CrA|* bet CrA -- Star}}, database entry, [[SIMBAD]]. Accessed on line September 5, 2008.</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 = Houk1982>{{cite book | last1 = Houk | first1=N. | title = Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume III: Declinations −40° to −26° | date = 1982 | bibcode = 1982mcts.book.....H }}</ref>

⚫
<ref name=vanLeeuwen2007>{{Cite New HIP red.|94160}}</ref>


<ref name=GaiaDR2>{{cite DR2|6717964750921304960}}</ref>
<ref name=GaiaDR2>{{cite DR2|6717964750921304960}}</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>
⚫
<ref name=vanLeeuwen2007>{{citation

| title=Validation of the new Hipparcos reduction
<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>
| last1=van Leeuwen | first1=F.

| journal=Astronomy and Astrophysics
<ref name = DeMed2014>{{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 | 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}}</ref>
| volume=474 | issue=2 | pages=653–664 | date=2007

| arxiv=0708.1752 | bibcode=2007A&A...474..653V
<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>
| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}</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 = 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 = 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=Eggleton2008>{{citation | postscript=.
| 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]]
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878
| doi=10.1111/j.1365-2966.2008.13596.x | s2cid=14878976 }}</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 | year = 2022 | 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=bsc1>[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=7259 HR 7259], database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50]. Accessed on line September 5, 2008.</ref>


<ref name = Anders2019>{{cite journal | display-authors = 1 | last1 = Anders | first1 = F. | last2 = Khalatyan | first2 = A. | last3 = Chiappini | first3 = C. | last4 = Queiroz | first4 = A. B. | last5 = Santiago | first5 = B. X. | last6 = Jordi | first6 = C. | last7 = Girardi | first7 = L. | last8 = Brown | first8 = A. G. A. | last9 = Matijevič | first9 = G. | last10 = Monari | first10 = G. | last11 = Cantat-Gaudin | first11 = T. | last12 = Weiler | first12 = M. | last13 = Khan | first13 = S. | last14 = Miglio | first14 = A. | last15 = Carrillo | first15 = I. | last16 = Romero-Gómez | first16 = M. | last17 = Minchev | first17 = I. | last18 = de Jong | first18 = R. S. | last19 = Antoja | first19 = T. | last20 = Ramos | first20 = P. | last21 = Steinmetz | first21 = M. | last22 = Enke | first22 = H. | title = Photo-astrometric distances, extinctions, and astrophysical parameters for <i>Gaia</i> DR2 stars brighter than <i>G</i> = 18| journal = Astronomy & Astrophysics | date = August 2019 | volume = 628 | page = A94 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201935765 | bibcode = 2019A&A...628A..94A | arxiv = 1904.11302 | doi-access = free}}</ref>
<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>


<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=Mcdonald>{{citation | postscript=.
| display-authors=1 | last1=McDonald | first1=I.
| last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L.
| title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars
| journal=Monthly Notices of the Royal Astronomical Society
| date=2012 | volume=427 | issue=1 | pages=343–57
| bibcode=2012MNRAS.427..343M | arxiv=1208.2037
| doi=10.1111/j.1365-2966.2012.21873.x | s2cid=118665352 }}</ref>


}}
}}

Revision as of 17:28, 22 December 2022

Beta Coronae Australis
Location of β CrA (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Australis
Right ascension 19h 10m 01.75580s[1]
Declination −39° 20′ 26.8644″[1]
Apparent magnitude (V) 4.10±0.01[2]
Characteristics
Spectral type K0 II/III CNIb[3]
U−B color index +1.07[4]
B−V color index +1.20[4]
R−I color index +0.61[4]
Astrometry
Radial velocity (Rv)2.7±0.7[5] km/s
Proper motion (μ) RA: +4.37 mas/yr[1]
Dec.: −36.65 mas/yr[1]
Parallax (π)6.88 ± 0.25 mas[1]
Distance470 ± 20 ly
(145 ± 5 pc)
Absolute magnitude (MV)−1.71[6]
Details
Mass5.17±0.26[7] M☉
Radius38.5±1.9[8] R☉
Luminosity614±33[9] L☉
Surface gravity (log g)1.26[10] cgs
Temperature4,575±55[11] K
Metallicity [Fe/H]+0.24[10] dex
Rotational velocity (v sin i)6.2±2[12] km/s
Other designations
β CrA, 46 G. Coronae Australis[13], CD−39°13146, CPD−39°8327, GC 26380, HD 178345, HIP 94160, HR 7259, SAO 211005, PPM 298639[14]
Database references
SIMBADdata

Beta Coronae Australis (Beta CrA), Latinized from β Coronae Australis, is a solitary star[15] located in the southern constellation Corona Australis. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.10.[2] The star is located around 470 light years distant from the Sun based on parallax,[1] and is drifting further away with a radial velocity of 2.7 km/s.[5] At its current distance, Beta CrA's brightness is diminished by 0.29 magnitudes due to interstellar dust.[16]

Beta CrA has a stellar classification of K0 II/III CNIb,[3] indicating that it is an evolved K-type star with the blended luminosity class of a bright giant and a regular giant star. The suffix CNIb states that the object has an anomalous overabundance of Cyano radicals in the spectrum, making it a CN star. Having exhausted the supply of hydrogen at its core, the star has expanded to 39 times the Sun's girth.[9] It has 5.17 times the mass of the Sun shines with a luminosity 614 times that of the Sun[9] from its [[photosphere at a surface temperature of 4,575 K.[11] Beta CrA is metal enriched (174% solar iron abundance[10]) and spins modestly with a projected rotational velocity of 6.2 km/s.[12]

References

  1. ^ a b c d e van Leeuwen, Floor (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. eISSN 1432-0746. ISSN 0004-6361. Hipparcos record for this source at VizieR.
  2. ^ a b 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. ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume III: Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
  4. ^ a b c 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. ^ a b 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. ^ 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. ^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "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. ^ 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. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  10. ^ a b c Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361.
  11. ^ 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.
  12. ^ 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". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361.
  13. ^ 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.
  14. ^ * bet CrA -- Star, database entry, SIMBAD. Accessed on line September 5, 2008.
  15. ^ 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.
  16. ^ 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.
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