26 Canis Majoris: Difference between revisions
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Adding local short description: "Star in the constellation Canis Major", overriding Wikidata description "star" (Shortdesc helper) |
Citation bot (talk | contribs) Add: location, doi, s2cid. Removed parameters. Some additions/deletions were actually parameter name changes. | You can use this bot yourself. Report bugs here. | Suggested by Abductive | Category:Objects with variable star designations | via #UCB_Category |
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| volume=38 | issue=5 | pages=331 | year=2012 |
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| bibcode=2012AstL...38..331A | arxiv=1108.4971 |
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| doi=10.1134/S1063773712050015 }}</ref> |
| doi=10.1134/S1063773712050015 | s2cid=119257644 }}</ref> |
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| volume=443 | issue=2 | pages=1629 | year=2014 |
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| bibcode=2014MNRAS.443.1629S | arxiv=1406.6093 |
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| doi=10.1093/mnras/stu1259 | postscript=. }}</ref> |
| doi=10.1093/mnras/stu1259 | s2cid=96452769 |
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| volume=722 | issue=1 | pages=605–619 | year=2010 |
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| bibcode=2010ApJ...722..605H | arxiv=1008.1761 |
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| doi=10.1088/0004-637X/722/1/605 | postscript=. }}</ref> |
| doi=10.1088/0004-637X/722/1/605 | s2cid=118532653 | postscript=. }}</ref> |
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| version=5.1 | journal=Astronomy Reports |
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| year=2017 | volume=61 | issue=1 | pages=80–88 |
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| bibcode=2017ARep...61...80S | postscript=. }}</ref> |
| doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 | postscript=. }}</ref> |
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<ref name=Briquet2007>{{citation |
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| volume=328 | issue=1 | pages=41–45 | date=January 2007 |
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| doi=10.1002/asna.200610702 | arxiv=astro-ph/0610537 |
| doi=10.1002/asna.200610702 | arxiv=astro-ph/0610537 |
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| bibcode=2007AN....328...41B | postscript=. }}</ref> |
| bibcode=2007AN....328...41B | s2cid=18724568 | postscript=. }}</ref> |
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<ref name=houk1978>{{citation |
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| last1=Houk | first1=Nancy | last2=Smith-Moore | first2=M. |
| last1=Houk | first1=Nancy | last2=Smith-Moore | first2=M. |
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| title=Michigan catalogue of two-dimensional spectral types for the HD stars |
| title=Michigan catalogue of two-dimensional spectral types for the HD stars |
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| volume=4 | |
| volume=4 | location=Ann Arbor | year=1978 |
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| publisher=Dept. of Astronomy, University of Michigan |
| publisher=Dept. of Astronomy, University of Michigan |
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| bibcode=1988mcts.book.....H | postscript=. }}</ref> |
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| volume=410 | issue=1 | pages=190–200 | date=January 2011 |
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| doi=10.1111/j.1365-2966.2010.17434.x | postscript=. |
| doi=10.1111/j.1365-2966.2010.17434.x | postscript=. |
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| bibcode=2011MNRAS.410..190T | arxiv=1007.4883 }}</ref> |
| bibcode=2011MNRAS.410..190T | arxiv=1007.4883 | s2cid=118629873 }}</ref> |
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Revision as of 13:03, 8 October 2020
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 07h 12m 12.21483s[1] |
| Declination | −25° 56′ 33.3107″[1] |
| Apparent magnitude (V) | 5.89[2] or (5.84 – 5.87)[3] |
| Characteristics | |
| Spectral type | B2 IV/V[4] |
| B−V color index | −0.170±0.004[5] |
| Variable type | SPB[3] |
| Astrometry | |
| Radial velocity (Rv) | +21.6±2.9[5] km/s |
| Proper motion (μ) | RA: −5.678[1] mas/yr Dec.: +8.929[1] mas/yr |
| Parallax (π) | 3.2442 ± 0.0841 mas[1] |
| Distance | 1,010 ± 30 ly (308 ± 8 pc) |
| Absolute magnitude (MV) | −1.11[5] |
| Details | |
| Mass | 5.5±0.9[6] M☉ |
| Radius | 3.25[2] R☉ |
| Luminosity | 1,000+995 −499[6] L☉ |
| Surface gravity (log g) | 3.777±0.027[7] cgs |
| Temperature | 16,157±200[7] K |
| Rotation | 2.729±0.001[6] |
| Rotational velocity (v sin i) | 64±14[7] km/s |
| Age | 3.6±3.3[8] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
26 Canis Majoris is a variable star in the southern constellation of Canis Major,[9] located around 1,010 light years away from the Sun.[1] It has the variable star designation MM Canis Majoris; 26 Canis Majoris is the Flamsteed designation.[9] This object is visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of 5.89.[2] It is moving further from the Earth with a heliocentric radial velocity of +22 km/s.[5]
With a stellar classification of B2 IV/V,[4] it appears as a B-type main-sequence star intermixed with traits of an evolving subgiant star. Samus et al. (2017) classify it as a slowly pulsating B-type variable star (SPB), which ranges from magnitude 5.84 down to 5.87 with a rotationally-modulated period of 2.72945 days.[3] Briquet et al. (2007) describe it as a chemically peculiar He-variable star, having inhomogeneous distributions of chemical elements across its surface. It has a variable, quasi-dipolar magnetic field, resulting in variations of the magnetic field and line strengths as it rotates.[6]
This star is around 3.6[8] million years old with a rotation period of 2.7 days.[6] It has 5.5[6] times the mass of the Sun and 3.25[2] times the Sun's radius. The star is radiating 1,000[6] times as much luminosity as the Sun from its photosphere at an effective temperature of 16,157 K.[7]
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 Shulyak, D.; et al. (2014), "Interferometry of chemically peculiar stars: Theoretical predictions versus modern observing facilities", Monthly Notices of the Royal Astronomical Society, 443 (2): 1629, arXiv:1406.6093, Bibcode:2014MNRAS.443.1629S, doi:10.1093/mnras/stu1259, S2CID 96452769.
- ^ a b c Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- ^ a b Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
- ^ a b c d 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, S2CID 119257644.
- ^ a b c d e f g Briquet, M.; et al. (January 2007), "Discovery of magnetic fields in three He variable Bp stars with He and Si spots", Astronomische Nachrichten, 328 (1): 41–45, arXiv:astro-ph/0610537, Bibcode:2007AN....328...41B, doi:10.1002/asna.200610702, S2CID 18724568.
- ^ a b c d Huang, W.; et al. (2010), "A Stellar Rotation Census of B Stars: From ZAMS to TAMS", The Astrophysical Journal, 722 (1): 605–619, arXiv:1008.1761, Bibcode:2010ApJ...722..605H, doi:10.1088/0004-637X/722/1/605, S2CID 118532653.
- ^ a b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ a b c "26 CMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 1, 2019.
