Mu1 Chamaeleontis: Difference between revisions
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'''μ<sup>1</sup> Chamaeleontis''', [[Romanization of Greek|Latinized]] as '''Mu<sup>1</sup> Chamaeleontis''', is a single<ref name=Eggleton2008/> [[star]] in the southern [[circumpolar constellation]] of [[Chamaeleon]]. It is a white-hued star that is dimly visible to the naked eye with an [[apparent visual magnitude]] of 5.53.<ref name=Anderson2012/> Based upon [[stellar parallax|parallax]] measurements, it is located approximately 408 [[light |
'''μ<sup>1</sup> Chamaeleontis''', [[Romanization of Greek|Latinized]] as '''Mu<sup>1</sup> Chamaeleontis''', is a single<ref name=Eggleton2008/> [[star]] in the [[Southern celestial hemisphere|southern]] [[circumpolar constellation]] of [[Chamaeleon]]. It is a white-hued star that is dimly visible to the [[naked eye]] with an [[apparent visual magnitude]] of 5.53.<ref name=Anderson2012/> Based upon [[stellar parallax|parallax]] measurements, it is located approximately 408 [[light-year]]s' distance from the [[Sun]].<ref name=GaiaDR2/> The [[radial velocity]] is poorly constrained, but it appears to be drifting further away at the rate of about +16 km/s.<ref name=Kharchenko/> |
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This object has a [[stellar classification]] of A0IV,<ref name=Houk1975/> matching an [[A-type star|A-type]] [[subgiant |
This object has a [[stellar classification]] of A0IV,<ref name=Houk1975/> matching an [[A-type star|A-type]] [[subgiant]] star.<ref name=Houk1975/> It has an [[absolute magnitude]] of +0.23,<ref name=Anderson2012/> and is radiating 66 times the [[luminosity of the Sun]] from its [[photosphere]] at an [[effective temperature]] of 8,720 K.<ref name=McDonald2012/> |
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== References == |
== References == |
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Revision as of 17:06, 29 November 2019
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 10h 00m 43.79873s[1] |
| Declination | −82° 12′ 52.8128″[1] |
| Apparent magnitude (V) | 5.53[2] |
| Characteristics | |
| Spectral type | A0IV[3] |
| U−B color index | +0.05[4] |
| B−V color index | +0.035±0.001[2] |
| Astrometry | |
| Radial velocity (Rv) | +16±10[5] km/s |
| Proper motion (μ) | RA: -26.639[1] mas/yr Dec.: +31.129[1] mas/yr |
| Parallax (π) | 7.9879 ± 0.1013 mas[1] |
| Distance | 408 ± 5 ly (125 ± 2 pc) |
| Absolute magnitude (MV) | +0.23[2] |
| Details | |
| Luminosity | 65.65[6] L☉ |
| Surface gravity (log g) | 4.15[7] cgs |
| Temperature | 8,720 K[6] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
μ1 Chamaeleontis, Latinized as Mu1 Chamaeleontis, is a single[9] star in the southern circumpolar constellation of Chamaeleon. It is a white-hued star that is dimly visible to the naked eye with an apparent visual magnitude of 5.53.[2] Based upon parallax measurements, it is located approximately 408 light-years' distance from the Sun.[1] The radial velocity is poorly constrained, but it appears to be drifting further away at the rate of about +16 km/s.[5]
This object has a stellar classification of A0IV,[3] matching an A-type subgiant star.[3] It has an absolute magnitude of +0.23,[2] and is radiating 66 times the luminosity of the Sun from its photosphere at an effective temperature of 8,720 K.[6]
References
- ^ a b c d e f 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.
- ^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
- ^ a b c Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars". Michigan Catalogue of two-dimensional spectral types for the HD stars. 1. Bibcode:1975mcts.book.....H.
- ^ Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
- ^ a b Kharchenko, N. V.; et al. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776.
- ^ a b c McDonald, I.; et al. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Davis, Philip A.; Egret, D. (1980). "An Analysis of the Hauck / Mermilliod Catalogue of Homgeneous Four-Color Data - Part Two". Astronomy and Astrophysics Supplement. 40: 199. Bibcode:1980A&AS...40..199P.
- ^ "mu. Cha". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ Eggleton, P. P.; Tokovinin, A. A. (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.
{{cite journal}}: CS1 maint: unflagged free DOI (link)
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