R Serpentis

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R Serpentis
RSerLightCurve.png
The visual band light curve of R Serpentis, from AAVSO data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Serpens [2]
Right ascension 15h 50m 41.73245s [3]
Declination +15° 08′ 01.0810″ [3]
Apparent magnitude  (V)5.2 - 14.4 [4]
Characteristics
Evolutionary stage AGB [5]
Spectral type M5-8e [6]
B−V color index 1.500±0.510 [2]
Variable type Mira [4]
Astrometry
Radial velocity (Rv)23.8±0.8 [7] km/s
Proper motion (μ)RA: +2.387 [3] mas/yr
Dec.: −36.699 [3] mas/yr
Parallax (π)3.5110±0.2966  mas [3]
Distance 930 ± 80  ly
(280 ± 20  pc)
Details
Mass 3.6 [8]   M☉
Radius 79 [9]   R☉
Luminosity 758 [9]   L☉
Surface gravity (log g)1.55 [8]   cgs
Temperature 3,413 [9]   K
Other designations
R Ser, BD+15°2918, HD 141850, HIP 77615, HR 5894, SAO 101771 [10]
Database references
SIMBAD data

R Serpentis is a Mira variable type star in the equatorial constellation of Serpens. It ranges between apparent magnitude 5.16 and 14.4, and spectral types M5e to M8e, over a period of 356.41 days. [4] [11] The variability of this star was discovered in 1826 by Karl Ludwig Harding. [12]

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971 , Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID   119257644.
  3. 1 2 3 4 5 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 .
  4. 1 2 3 Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017), "General catalogue of variable stars: Version GCVS 5.1", Astronomy Reports, 61 (1): 80, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID   125853869.
  5. ↑ McDonald, I.; Zijlstra, A. A. (2016). "Pulsation-triggered Mass Loss from AGB Stars: The 60 Day Critical Period". The Astrophysical Journal. 823 (2): L38. arXiv: 1605.02622 . Bibcode:2016ApJ...823L..38M. doi: 10.3847/2041-8205/823/2/L38 .
  6. ↑ Keenan, Philip C.; et al. (1974), "Revised Catalog of Spectra of Mira Variables of Types ME and Se", Astrophysical Journal Supplement, 28: 271, Bibcode:1974ApJS...28..271K, doi: 10.1086/190318 .
  7. ↑ Gontcharov, G. A. (November 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.
  8. 1 2 Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv: 2407.06963 . Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
  9. 1 2 3 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv: 1706.02208 . Bibcode:2017MNRAS.471..770M. doi: 10.1093/mnras/stx1433 .
  10. ↑ "R Ser". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 5 September 2018.
  11. ↑ Watson, Christopher (4 January 2010). "R Serpentis". AAVSO Website. American Association of Variable Star Observers . Retrieved 22 May 2014.
  12. ↑ Zsoldos, E. (1994). "Three Early Variable Star Catalogues". Journal for the History of Astronomy. 25 (2): 92–98. Bibcode:1994JHA....25...92Z. doi:10.1177/002182869402500202. S2CID   117099222.
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