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MY Cephei
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 22h 54m 31.698s[1] |
| Declination | +60° 49′ 38.97″[1] |
| Apparent magnitude (V) | 14.4–15.5[2] |
| Characteristics | |
| Evolutionary stage | Extreme[3] OH/IR red supergiant[4] |
| Spectral type | M3,[5] M7–7.5 I[6] (M6–7Iab[2]) |
| Apparent magnitude (G) | 10.225[1] |
| Apparent magnitude (H) | 2.98[7] |
| Apparent magnitude (K) | 2.14[7] |
| Variable type | SRc[2] |
| Astrometry | |
| Proper motion (μ) | RA: –2.637[1] mas/yr Dec.: –1.883[1] mas/yr |
| Parallax (π) | 0.3398 ± 0.0708 mas[1] |
| Distance | 3,000+350 −290[8] pc |
| Details | |
| Mass | 14.5[9] M☉ |
| Radius | 1,028 ± 169 – 1,138 ± 387[5][a] R☉ |
| Luminosity | 159,000+60,000 −44,000 – 195,000+173,000 −92,000[5][b] L☉ |
| Temperature | 3,595±31[5] K |
| Age | 9[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
MY Cephei (IRC +60375) is a red supergiant located in open cluster NGC 7419 in the constellation of Cepheus. It is a semiregular variable star with a maximum brightness of magnitude 14.4 and a minimum of magnitude 15.5.
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c "GCVS Query=MY Cep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Retrieved 2020-08-06.
- ^ Davies, Ben; Beasor, Emma R. (2019). "The distances to star clusters hosting Red Supergiants: χ per, NGC 7419, and Westerlund 1". Monthly Notices of the Royal Astronomical Society: Letters. 486: L10–L14. arXiv:1903.12506. doi:10.1093/mnrasl/slz050. S2CID 88517447.
- ^ Beauchamp, Alain; Moffat, Anthony F. J.; Drissen, Laurent (1994). "The galactic open cluster NGC 7419 and its five red supergiants". Astrophysical Journal Supplement Series. 93: 187. Bibcode:1994ApJS...93..187B. doi:10.1086/192051.
- ^ a b c d Cite error: The named reference
messineo2021was invoked but never defined (see the help page). - ^ a b Humphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (August 2020). "Exploring the Mass Loss Histories of the Red Supergiants". The Astronomical Journal. 160 (3): 145. arXiv:2008.01108. Bibcode:2020AJ....160..145H. doi:10.3847/1538-3881/abab15. S2CID 220961677.
- ^ a b Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
- ^ Cite error: The named reference
Davies2020was invoked but never defined (see the help page). - ^ Marco, A.; Negueruela, I. (2013). "NGC 7419 as a template for red supergiant clusters". Astronomy & Astrophysics. 552: A92. arXiv:1302.5649. Bibcode:2013A&A...552A..92M. doi:10.1051/0004-6361/201220750. S2CID 53723223.
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
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