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ST Camelopardalis

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ST Camelopardalis

The visual band light curve of ST Camelopardalis, from AAVSO data[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Camelopardalis
Right ascension 04h 051m 13.348s[2]
Declination +68° 10′ 07.65″[2]
Apparent magnitude (V) 6.3 to 8.5[3]
Characteristics
Evolutionary stage Carbon star
Spectral type C5,4(N5)[3]
B−V color index +2.1[4]
Variable type SRb[3]
Astrometry
Proper motion (μ) RA: −2.992±0.136[2] mas/yr
Dec.: −3.237±0.185[2] mas/yr
Parallax (π)1.6725 ± 0.0989 mas[2]
Distance2,000 ± 100 ly
(600 ± 40 pc)
Absolute magnitude (MV)−1.232[5]
Details
Radius244[6] R☉
Luminosity4,478[2] L☉
Temperature3,388[6] K
Metallicity [Fe/H]−0.1[7] dex
Other designations
ST Camelopardalis, ST Cam, HD 20243, HIP 22552, BD+57°350
Database references
SIMBADdata

ST Camelopardalis is a carbon star in the constellation of Camelopardalis. It has a radius of 244 R☉.[6]

Variability

ST Cam is a semiregular variable star. It is doubly periodic, with the two pulsation periods P0 and P1 being equal to 368.6 and 201 days respectively.[8]

References

  1. ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. ^ 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.
  3. ^ a b c N. N. Samus; O. V. Durlevich; et al. "ST Cam database entry". Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.). CDS. Retrieved 2018-10-14.
  4. ^ Ita, Y.; Matsuura, M.; Ishihara, D.; Oyabu, S.; Takita, S.; Kataza, H.; Yamamura, Issei; Matsunaga, N.; Tanabé, T.; Nakada, Y.; Fujiwara, H.; Wada, T.; Onaka, T.; Matsuhara, H. (2010). "AKARI's infrared view on nearby stars. Using AKARI infrared camera all-sky survey, 2MASS, and Hipparcos catalogs". Astronomy and Astrophysics. 514: A2. arXiv:1003.1130. Bibcode:2010A&A...514A...2I. doi:10.1051/0004-6361/200913695. S2CID 56323280.
  5. ^ Gontcharov, G. A. (2017). "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)". VizieR On-Line Data Catalog. Bibcode:2017yCat..90370769G.
  6. ^ a b c Stassun K.G.; et al. (October 2019). "The revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. S2CID 166227927.
  7. ^ Lambert, David L.; Gustafsson, Bengt; Eriksson, Kjell; Hinkle, Kenneth H. (1986). "The Chemical Composition of Carbon Stars. I. Carbon, Nitrogen, and Oxygen in 30 Cool Carbon Stars in the Galactic Disk". The Astrophysical Journal Supplement Series. 62: 373. Bibcode:1986ApJS...62..373L. doi:10.1086/191145.
  8. ^ Howarth, J. J.; Greaves, J. (February 2001). "ST Camelopardalis: A doubly periodic semiregular variable star". Journal of the British Astronomical Association. 111: 40–42. Bibcode:2001JBAA..111...40H. ISSN 0007-0297.


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