Wikipedia

CS Camelopardalis

CS Camelopardalis (CS Cam; HD 21291) is a binary star in reflection nebula VdB 14, in the constellation Camelopardalis.

CS Camelopardalis
Location of CS Camelopardalis (circled)
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]
Distanceapprox. 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]
Distance3,400 ± 200 ly
(1,040 ± 60 pc)
Details
Mass19[11] M☉
Radius85.7[11] R☉
Luminosity75,900[12] L☉
Surface gravity (log g)1.65[6] cgs
Temperature10,800[6] K
Rotational velocity (v sin i)30[13] km/s
Age16.5[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
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

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]

A light curve for CS Camelopardalis, adapted from Morel et al. (2004)[16]

The primary component, CS Camelopardalis A, is a blue-white B-type supergiant with a mean apparent magnitude of 4.21m. 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.[17]

References

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  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ 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.
  6. ^ 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.
  7. ^ 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.
  8. ^ 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.
  9. ^ 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.
  10. ^ 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.
  11. ^ 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.
  12. ^ 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.
  13. ^ 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.
  14. ^ 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.
  15. ^ The Washington Visual Double Star Catalog
  16. ^ 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.
  17. ^ Dommanget, J.; et al. (2002). "Catalog of Components of Double & Multiple stars". Observations et Travaux. 54 (5). Bibcode:2002yCat.1274....0D.
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