RX Andromedae

RX Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 35m 35.53730s[1]
Declination +41° 17′ 57.78369″[1]
Apparent magnitude (V) 10.2 to 15.1[2]
Characteristics
Spectral type pec(UG)[2]
B−V color index -0.4556[3]
Variable type UGZ[2]
Astrometry
Radial velocity (Rv)-12[4] km/s
Proper motion (μ) RA: 1.217 ± 2.221[5] mas/yr
Dec.: -22.225 ± 0.699 [5] mas/yr
Parallax (π)5.0276 ± 0.0507[1] mas
Distance649 ± 7 ly
(199 ± 2 pc)
Details
White dwarf
Mass0.8[6] M☉
Surface gravity (log g)8.2[6] cgs
Temperature40,000 - 45,000[6] K
Unknown component
Other designations
2MASS J01043553+4117577, TYC 2807-1623-1
Database references
SIMBADdata

RX Andromedae is a variable star in the constellation of Andromeda. Although it is classified as a dwarf nova of the Z Camelopardalis (UGZ) type, it has shown peculiar behaviour in the past.[6] However, for most of the time it varies from an apparent visual magnitude of 15.1 at minimum brightness to a magnitude of 10.2 at maximum brightness, with a period of approximately 13 days.[2]

References

  1. 1 2 3 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.
  2. 1 2 3 4 RX And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2009-06-30.
  3. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H.
  4. ↑ Kraft, R. P. (March 1962). "Binary Stars among Cataclysmic Variables. I. U Geminorum Stars (dwarf Novae)". Astrophysical Journal. 135: 408. Bibcode:1962ApJ...135..408K. doi:10.1086/147280.
  5. 1 2 Gaia Collaboration; Brown, A. G. A; Vallenari, A; Prusti, T; De Bruijne, J. H. J; Mignard, F; Drimmel, R; Babusiaux, C; Bailer-Jones, C. A. L; Bastian, U; Biermann, M; Evans, D. W; Eyer, L; Jansen, F; Jordi, C; Katz, D; Klioner, S. A; Lammers, U; Lindegren, L; Luri, X; O'Mullane, W; Panem, C; Pourbaix, D; Randich, S; Sartoretti, P; Siddiqui, H. I; Soubiran, C; Valette, V; Van Leeuwen, F; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy & Astrophysics. 595: A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  6. 1 2 3 4 Sepinsky, J. F.; Sion, E. M.; Szkody, P.; Gänsicke, B. T. (2002), "Hubble Space Telescope Spectroscopy of the Dwarf Nova RX Andromedae during Outburst Rise and Decline", The Astrophysical Journal, 574 (2): 937–941, Bibcode:2002ApJ...574..937S.


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