CS Camelopardalis
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Binary star in the constellation Camelopardalis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| A | |
| Right ascension | 03h 29m 04.13196s[1] |
| Declination | +59° 56′ 25.1970″[1] |
| Apparent magnitude (V) | 4.22[2] (4.19 - 4.23[3] ) |
| B | |
| Right ascension | 03h 29m 04.22561s[4] |
| Declination | +59° 56′ 25.9860″[4] |
| Apparent magnitude (V) | 7.75[5] |
| Characteristics | |
| A | |
| Spectral type | B9 Ia[6] |
| U−B color index | −0.23[2] |
| B−V color index | +0.41[2] |
| Variable type | α Cyg [7] |
| B | |
| Spectral type | B2III[8] |
| Astrometry | |
| A | |
| Radial velocity (Rv) | −5.10[9] km/s |
| Proper motion (μ) | RA: −2.751[1] mas/yr Dec.: −1.066[1] mas/yr |
| Parallax (π) | 1.0527±0.1311 mas [1] |
| Distance | approx. 3,100 ly (approx. 900 pc) |
| Absolute magnitude (MV) | −7.10[10] |
| B | |
| Proper motion (μ) | RA: −1.702[4] mas/yr Dec.: −0.646[4] mas/yr |
| Parallax (π) | 0.9642±0.0601 mas [4] |
| Distance | 3,400 ± 200 ly (1,040 ± 60 pc) |
| Details | |
| Mass | 19[11] M☉ |
| Radius | 85.7[11] R☉ |
| Luminosity | 75,900[12] L☉ |
| Surface gravity (log g) | 1.65[6] cgs |
| Temperature | 10,800[6] K |
| Rotational velocity (v sin i) | 30[13] km/s |
| Age | 16.5[14] Myr |
| Other designations | |
| ADS 2544, BD+59°660, CCDM 03291+5956, GC 4113, HD 21291, HIP 16228, HR 1035, SAO 24054, WDS J03291+5956 | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
CS Camelopardalis (CS Cam; HD 21291) is a binary star in reflection nebula VdB 14, in the constellation Camelopardalis. It is a 4th magnitude star, and is visible to the naked eye under good observing conditions.
It forms a group of stars known as the Camelopardalis R1 association, part of the Cam OB1 association. The near-identical supergiant CE Camelopardalis is located half a degree to the south.
As a binary star, CS Cam is designated as Struve 385 (STF 385, Σ385).[15]
The primary component, CS Camelopardalis A, is a blue-white B-type supergiant with a mean apparent magnitude of 4.21m. The star was found to be a variable star when the Hipparcos data was analyzed. It was given its variable star designation in 1999.[17] It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude 4.19m to 4.23m. Its companion, CS Camelopardalis B, is a magnitude 8.7m blue giant star located 2.4 arcseconds from the primary.[18]
References
[edit ]- ^ 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 c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ^ 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.; Van Der Marel, H.; Mignard, F.; Murray, C. A.; Le Poole, R. S.; Schrijver, H.; Turon, C.; Arenou, F.; Froeschlé, M.; Petersen, C. S. (1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics. 323: 501. Bibcode:1997A&A...323L..49P.
- ^ 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.
- ^ Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics. 384 (1): 180–189. Bibcode:2002A&A...384..180F. doi:10.1051/0004-6361:20011822 . ISSN 0004-6361.
- ^ a b c Firnstein, M.; Przybilla, N. (2012). "Quantitative spectroscopy of Galactic BA-type supergiants. I. Atmospheric parameters". Astronomy & Astrophysics. 543: A80. arXiv:1207.0308 . Bibcode:2012A&A...543A..80F. doi:10.1051/0004-6361/201219034. S2CID 54725386.
- ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- ^ Maíz Apellániz, J.; Barbá, R. H.; Fariña, C.; Sota, A.; Pantaleoni González, M.; Holgado, G.; Negueruela, I.; Simón-Díaz, S. (2021). "Lucky spectroscopy, an equivalent technique to lucky imaging. II. Spatially resolved intermediate-resolution blue-violet spectroscopy of 19 close massive binaries using the William Herschel Telescope". Astronomy and Astrophysics. 646: A11. arXiv:2011.12250 . Bibcode:2021A&A...646A..11M. doi:10.1051/0004-6361/202039479.
- ^ Gontcharov, G. A. (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. S2CID 119231169.
- ^ Lyder, David A. (2001). "The Stars in Camelopardalis OB1: Their Distance and Evolutionary History". The Astronomical Journal. 122 (5): 2634–2643. Bibcode:2001AJ....122.2634L. doi:10.1086/323705 .
- ^ a b Lamers, H. J. G. L. M. (1981). "Mass loss from O and B stars". Astrophysical Journal. 245: 593. Bibcode:1981ApJ...245..593L. doi:10.1086/158835 .
- ^ McErlean, N. D.; Lennon, D. J.; Dufton, P. L. (1999). "Galactic B-supergiants: A non-LTE model atmosphere analysis to estimate atmospheric parameters and chemical compositions". Astronomy and Astrophysics. 349: 553. Bibcode:1999A&A...349..553M.
- ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590 .
- ^ 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.
- ^ The Washington Visual Double Star Catalog
- ^ Morel, T.; Marchenko, S. V.; Pati, A. K.; Kuppuswamy, K.; Carini, M. T.; Wood, E.; Zimmerman, R. (June 2004). "Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability". Monthly Notices of the Royal Astronomical Society. 351 (2): 552–568. arXiv:astro-ph/0403155 . Bibcode:2004MNRAS.351..552M. doi:10.1111/j.1365-2966.2004.07799.x .
- ^ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (January 1999). "The 74th Special Name-list of Variable Stars" (PDF). Information Bulletin on Variable Stars. 4659: 1–27. Bibcode:1999IBVS.4659....1K . Retrieved 30 December 2024.
- ^ Dommanget, J.; et al. (2002). "Catalog of Components of Double & Multiple stars". Observations et Travaux. 54 (5). Bibcode:2002yCat.1274....0D.