User:400Weir/sandbox: Difference between revisions
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'''HD 11928''' ('''HR 564; NSV 15408''') is a solitary [[star]] located in the northern [[constellation]] [[Triangulum]]. It is faintly visible to the [[naked eye]] as a red-hued point of light with an [[apparent magnitude]] of 5.85.<ref name = Tycho2000/> [[Gaia DR3]] [[parallax]] measurements imply a distance of 530 [[light-year]]s and it is drifting closer with a heliocentric [[radial velocity]] of {{val|-1.93|ul=km/s}}.<ref name = Famaey2005/> At its current distance, HD 11928's brightness is diminished by an [[interstellar extinction]] of 0.13 [[magnitude (astronomy)|magnitude]]s<ref name = Gontcharov2017/> and it has an [[absolute magnitude]] of +0.11.<ref name = Anderson2012/> |
'''HD 11928''' ('''HR 564; NSV 15408''') is a solitary [[star]]<ref name = Eggleton2008/> located in the northern [[constellation]] [[Triangulum]]. It is faintly visible to the [[naked eye]] as a red-hued point of light with an [[apparent magnitude]] of 5.85.<ref name = Tycho2000/> [[Gaia DR3]] [[parallax]] measurements imply a distance of 530 [[light-year]]s and it is drifting closer with a heliocentric [[radial velocity]] of {{val|-1.93|ul=km/s}}.<ref name = Famaey2005/> At its current distance, HD 11928's brightness is diminished by an [[interstellar extinction]] of 0.13 [[magnitude (astronomy)|magnitude]]s<ref name = Gontcharov2017/> and it has an [[absolute magnitude]] of +0.11.<ref name = Anderson2012/> |
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HD 11928 has a [[stellar classification]] of M2 III,<ref name = Wilson1950/> indicating that is an [[stellar evolution|evolved]] [[M-type star|M-type]] [[giant star]]. It is currently an [[asymptotic giant branch]] star that is generating energy via the fusion of [[hydrogen]] and [[helium]] shells around an inert [[carbon]] [[stellar core|core]]. At present it has expanded to 52.68 times the [[radius of the Sun]]<ref name = Stassun2019/> and it radiates 485 times the [[luminosity of the Sun]]<ref name = GaiaDR2/> from its [[photosphere]] at an [[effective temperature]] of {{val|3656|ul=K|fmt=commas}}.<ref name = "van Belle1999"/> |
HD 11928 has a [[stellar classification]] of M2 III,<ref name = Wilson1950/> indicating that is an [[stellar evolution|evolved]] [[M-type star|M-type]] [[giant star]]. It is currently an [[asymptotic giant branch]] star that is generating energy via the fusion of [[hydrogen]] and [[helium]] shells around an inert [[carbon]] [[stellar core|core]]. At present it has expanded to 52.68 times the [[radius of the Sun]]<ref name = Stassun2019/> and it radiates 485 times the [[luminosity of the Sun]]<ref name = GaiaDR2/> from its [[photosphere]] at an [[effective temperature]] of {{val|3656|ul=K|fmt=commas}}.<ref name = "van Belle1999"/> |
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In 1997, the [[Hipparcos]] satelite observed that the star varied from 5.89 to 5.93 in the [[Hipparcos passband]]. Further observations from Koen & Eyer reveal that HD 11928 flucates between 5.84 and 5.85 in the visual passband within 50.7 [[days]]. As of 2004 however, its variability has not been confirmed, but it is still suspected to be variable. |
In 1997, the [[Hipparcos]] satelite observed that the star varied from 5.89 to 5.93 in the [[Hipparcos passband]].<ref name = Perryman1997/> Further observations from Koen & Eyer reveal that HD 11928 flucates between 5.84 and 5.85 in the visual passband within 50.7 [[days]].<ref name = Koen2002/> As of 2004 however, its variability has not been confirmed,<ref name = Samus2004/> but it is still suspected to be variable. |
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==References== |
==References== |
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<ref name = Eggen1992>{{cite journal |last1=Eggen |first1=Olin J. |title=Asymptotic giant branch stars near the sun |journal=The Astronomical Journal |date=July 1992 |volume=104 |pages=275 |doi=10.1086/116239 |issn=0004-6256 |bibcode=1992AJ....104..275E |s2cid=121672252 |doi-access=free}}</ref> |
<ref name = Eggen1992>{{cite journal |last1=Eggen |first1=Olin J. |title=Asymptotic giant branch stars near the sun |journal=The Astronomical Journal |date=July 1992 |volume=104 |pages=275 |doi=10.1086/116239 |issn=0004-6256 |bibcode=1992AJ....104..275E |s2cid=121672252 |doi-access=free}}</ref> |
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<ref name = Perryman1997>{{Cite journal|last1=Perryman|first1=M. A. C.|last2=Lindegren|first2=L.|last3=Kovalevsky|first3=J.|last4=Hoeg|first4=E.|last5=Bastian|first5=U.|last6=Bernacca|first6=P. L.|last7=Crézé|first7=M.|last8=Donati|first8=F.|last9=Grenon|first9=M.|last10=Grewing|first10=M.|last11=van Leeuwen|first11=F.|date= July 1997|title=The HIPPARCOS Catalogue|journal=Astronomy and Astrophysics|volume=323|pages=L49–L52|bibcode=1997A&A...323L..49P|issn=0004-6361}}</ref> |
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<ref name = Koen2002>{{cite journal | last1 = Koen | first1 = Chris | last2 = Eyer | first2 = Laurent | title = New periodic variables from the ''Hipparcos'' epoch photometry | journal = Monthly Notices of the Royal Astronomical Society | date = March 2002 | volume = 331 | issue = 1 | pages = 45–59 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1046/j.1365-8711.2002.05150.x | s2cid = 10505995 | bibcode = 2002MNRAS.331...45K | arxiv = astro-ph/0112194 | doi-access = free}}</ref> |
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<ref name = Samus2004>{{cite journal |last1=Samus |first1=N. N. |last2=Durlevich |first2=O. V. |title=VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004) |journal=VizieR Online Data Catalog |date=November 2004 |pages=II/250 |bibcode=2004yCat.2250....0S}}</ref> |
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<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> |
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}} |
}} |
Revision as of 18:05, 24 June 2024
41 Sextantis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Sextans |
Right ascension | 10h 50m 18.05639s[1] |
Declination | −08° 53′ 51.9538″[1] |
Apparent magnitude (V) | 5.79±0.01[2] |
Characteristics | |
Aa | |
Spectral type | kA3 hA7V mA9[3] |
U−B color index | +0.13[4] |
B−V color index | +0.16[4] |
Ab | |
Spectral type | F/G[5] |
Astrometry | |
Radial velocity (Rv) | −4.9±2.9[6] km/s |
Proper motion (μ) | RA: −5.694 mas/yr[1] Dec.: −15.814 mas/yr[1] |
Parallax (π) | 10.5160 ± 0.0428 mas[1] |
Distance | 310 ± 1 ly (95.1 ± 0.4 pc) |
Absolute magnitude (MV) | +0.91[7] |
Orbit[5] | |
Primary | Aa |
Period (P) | 6.1670 d |
Eccentricity (e) | 0.014±0.006[8] |
Periastron epoch (T) | 2,453,690.7442±0.0011 JD |
Argument of periastron (ω) (secondary) | 272±4[8]° |
Semi-amplitude (K1) (primary) | 46.67±0.04 km/s |
Semi-amplitude (K2) (secondary) | 93.06±0.20 km/s |
Details | |
Aa | |
Mass | 2.23[9] M☉ |
Radius | 3.10±0.16[10] R☉ |
Luminosity | 32.6±1.7[11] L☉ |
Surface gravity (log g) | 3.83+0.10 −0.07[12] cgs |
Temperature | 7,759[13] K |
Metallicity [Fe/H] | −0.23[14] dex |
Rotational velocity (v sin i) | 24[5] km/s |
Age | 698+128 −108[13] Myr |
Ab | |
Mass | 1.05[9] M☉ |
Radius | 1.3±0.2[5] R☉ |
Luminosity | 1.8±0.5[5] L☉ |
Rotational velocity (v sin i) | 10[5] km/s |
Other designations | |
Database references | |
SIMBAD | data |
41 Sextantis (HD 93903; HR 4237; 74 G. Sextantis), or simply 41 Sex is a spectroscopic binary located in the equatorial constellation Sextans. It has an apparent magnitude of 5.79,[2] making it faintly visible to the naked eye under ideal conditions. The system is located relatively close at a distance of 310 light-years based on Gaia DR3 parallax measurements[1] and it is drifting closer with a heliocentric radial velocity of approximately −4.9 km/s.[6] At its current distance, 41 Sex's brightness is diminished by an interstellar extinction of 0.16 magnitudes[17] and it has an absolute magnitude of +0.91.[7]
The visible component has a stellar classification of kA3hA7VmA9,[3] indicating that it is an Am star with the calcium K-lines of an A3 star, the hydrogen lines and effective temperature of an A7 main-sequence star, and the metal lines of an A9 star. It has 2.23 times the mass of the Sun[9] and a slightly enlarged radius 3.10 times that of the Sun.[10] It radiates 32.6 times the luminosity of the Sun[11] from its photosphere at an effective temperature of 7,759 K,[13] giving it a white-hue when viewed in the night sky. 41 Sextantis Aa is metal-deficient with an iron abundance 58.9% that of the Sun[14] and it spins modestly with a projected rotational velocity of 24 km/s.[5]
The companion's spectrum is very weak compared to the primary, but it is said to be either a late F-type star or an early G-type star.[5] It has 105% the mass of the Sun[9] and 1.3 times the radius of the Sun.[5] It radiates 1.8 times the luminosity of the Sun from its photosphere.[5] It spins slowly with a projected rotational velocity of 10 km/s.[5]
References
- ^ a b c d e 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.
- ^ 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. S2CID 17128864.
- ^ a b Abt, Helmut A.; Morrell, Nidia I. (July 1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182. ISSN 0067-0049. S2CID 120495962.
- ^ 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.
- ^ a b c d e f g h i j k Fekel, Francis C.; Williamson, Michael H. (November 1, 2010). "New Precision Orbits of Bright Double-lined Spectroscopic Binaries. V. The Am Stars HD 434 and 41 Sextantis". The Astronomical Journal. 140 (5): 1381–1390. Bibcode:2010AJ....140.1381F. doi:10.1088/0004-6256/140/5/1381. ISSN 0004-6256. S2CID 14261237.
- ^ 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.
- ^ 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.
- ^ a b Worek, Thaddeus F. (May 1998). "Concerning the Reported Phase‐modulated Changes in the Spectrum of 41 Sextantis". Publications of the Astronomical Society of the Pacific. 110 (747): 580–585. Bibcode:1998PASP..110..580W. doi:10.1086/316160. ISSN 0004-6280. S2CID 121074533.
- ^ a b c d Kraicheva, Z.; Popova, E.; Tutukov, A.; Yungelson, L. (July 1980). "Catalogue of physical parameters of spectroscopic binary stars". Bull. Inf. Centre Données Stellaires. 19: 71. Bibcode:1980BICDS..19...71K. S2CID 118298938.
- ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (April 8, 2004). "The angular sizes of dwarf stars and subgiants: Surface brightness relations calibrated by interferometry". 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. S2CID 6077801.
- ^ a b McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711. S2CID 73594365.
- ^ Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl:1721.1/124721. S2CID 166227927.
- ^ a b c Kunzli, M.; North, P. (February 1998). "Behaviour of calcium abundance in Am-Fm stars with evolution". Astronomy and Astrophysics. 330: 651-658. arXiv:astro-ph/9710223. Bibcode:1998A&A...330..651K. doi:10.48550/ARXIV.ASTRO-PH/9710223. S2CID 5679821.
- ^ a b 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. S2CID 131780028.
- ^ 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.
- ^ "* 41 Sex". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 12, 2024.
- ^ 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. S2CID 118879856.
HD 11928
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Triangulum |
Right ascension | 01h 57m 43.74417s[1] |
Declination | +27° 48′ 15.7579″[1] |
Apparent magnitude (V) | 5.84 - 5.85[2] |
Characteristics | |
Evolutionary stage | AGB[3] |
Spectral type | M2 III[4] |
B−V color index | +1.60[5] |
Variable type | suspected[2] |
Astrometry | |
Radial velocity (Rv) | −1.93±0.22[6] km/s |
Proper motion (μ) | RA: +12.974 mas/yr[1] Dec.: −60.043 mas/yr[1] |
Parallax (π) | 6.1432 ± 0.1953 mas[1] |
Distance | 530 ± 20 ly (163 ± 5 pc) |
Absolute magnitude (MV) | +0.11[7] |
Details | |
Radius | 52.68[8] R☉ |
Luminosity | 485±17[9] L☉ |
Surface gravity (log g) | 1.024[10] cgs |
Temperature | 3,656±72[11] K |
Other designations | |
Database references | |
SIMBAD | data |
HD 11928 (HR 564; NSV 15408) is a solitary star[13] located in the northern constellation Triangulum. It is faintly visible to the naked eye as a red-hued point of light with an apparent magnitude of 5.85.[14] Gaia DR3 parallax measurements imply a distance of 530 light-years and it is drifting closer with a heliocentric radial velocity of −1.93 km/s.[6] At its current distance, HD 11928's brightness is diminished by an interstellar extinction of 0.13 magnitudes[15] and it has an absolute magnitude of +0.11.[7]
HD 11928 has a stellar classification of M2 III,[4] indicating that is an evolved M-type giant star. It is currently an asymptotic giant branch star that is generating energy via the fusion of hydrogen and helium shells around an inert carbon core. At present it has expanded to 52.68 times the radius of the Sun[8] and it radiates 485 times the luminosity of the Sun[9] from its photosphere at an effective temperature of 3,656 K.[11]
In 1997, the Hipparcos satelite observed that the star varied from 5.89 to 5.93 in the Hipparcos passband.[16] Further observations from Koen & Eyer reveal that HD 11928 flucates between 5.84 and 5.85 in the visual passband within 50.7 days.[17] As of 2004 however, its variability has not been confirmed,[18] but it is still suspected to be variable.
References
- ^ a b c d 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.
- ^ a b Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. eISSN 1562-6881. ISSN 1063-7729. S2CID 125853869.
- ^ Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal. 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239. ISSN 0004-6256. S2CID 121672252.
- ^ a b Wilson, Ralph E.; Joy, Alfred H. (March 1950). "Radial Velocities of 2111 Stars". The Astrophysical Journal. 111: 221. Bibcode:1950ApJ...111..221W. doi:10.1086/145261. eISSN 1538-4357. ISSN 0004-637X. S2CID 122883647.
- ^ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication. Bibcode:1970Priv.........0H. S2CID 231475662.
- ^ a b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
- ^ 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.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl:1721.1/124721. S2CID 166227927.
- ^ a b 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.
- ^ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711. S2CID 73594365.
- ^ a b van Belle, G. T.; Lane, B. F.; Thompson, R. R.; Boden, A. F.; Colavita, M. M.; Dumont, P. J.; Mobley, D. W.; Palmer, D.; Shao, M.; Vasisht, G. X.; Wallace, J. K.; Creech-Eakman, M. J.; Koresko, C. D.; Kulkarni, S. R.; Pan, X. P.; Gubler, J. (1999). "Radii and Effective Temperatures for G, K, and M Giants and Supergiants". The Astronomical Journal. 117 (1): 521–533. Bibcode:1999AJ....117..521V. doi:10.1086/300677. S2CID 18617983.
- ^ "HD 11928". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 11, 2024.
- ^ 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.
- ^ 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. S2CID 17128864.
- ^ 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. S2CID 118879856.
- ^ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; van Leeuwen, F. (July 1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics. 323: L49–L52. Bibcode:1997A&A...323L..49P. ISSN 0004-6361.
- ^ Koen, Chris; Eyer, Laurent (March 2002). "New periodic variables from the Hipparcos epoch photometry". Monthly Notices of the Royal Astronomical Society. 331 (1): 45–59. arXiv:astro-ph/0112194. Bibcode:2002MNRAS.331...45K. doi:10.1046/j.1365-8711.2002.05150.x. eISSN 1365-2966. ISSN 0035-8711. S2CID 10505995.
- ^ Samus, N. N.; Durlevich, O. V. (November 2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR Online Data Catalog: II/250. Bibcode:2004yCat.2250....0S.