S Arae
| Observation data EpochJ2000.0EquinoxJ2000.0(ICRS) | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h59m10.7311s[2] |
| Declination | −49° 26′ 00.453″[2] |
| Apparent magnitude(V) | 9.92 to 11.24[3] |
| Characteristics | |
| Spectral type | A3 II[4] |
| B−Vcolor index | 0.9[2] |
| Variable type | RRab[3] |
| Astrometry | |
| Radial velocity(Rv) | 185 ± 655.35[2]km/s |
| Proper motion(μ) | RA:−26.24[2]mas/yr Dec.:−8.44[2]mas/yr |
| Parallax(π) | 1.1191 ± 0.0431mas[5] |
| Distance | 2,900 ± 100ly (890 ± 30pc) |
| Absolute magnitude(MV) | +0.78 – +0.93[6] |
| Details | |
| Mass | 0.51 – 0.62[6]M☉ |
| Radius | 3.01[5]R☉ |
| Luminosity | 27[5]L☉ |
| Surface gravity(logg) | +2.9[6]cgs |
| Temperature | 6,563[5]K |
| Metallicity[Fe/H] | −0.90[6]dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Arae(S Ara) is anRR Lyrae-typepulsatingvariable starin theconstellationofAra.[2]It has anapparent visual magnitudewhich varies between 9.92 and 11.24 during its 10.85-hour pulsation period,[1][3]and it exhibits theBlazhko effect.[6]
References
[edit]- ^abChadid, M.; Vernin, J.; Mekarnia, D.; Chapellier, E.; Trinquet, H.; Bono, G. (June–July 2010)."First Antarctica light curve PAIX monitoring of the Blazhko RR Lyrae star: S Arae".Astronomy & Astrophysics.516.Bibcode:2010A&A...516L..15C.doi:10.1051/0004-6361/201014857.Retrieved24 October2021.
- ^abcdefgh"V* S Ara".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved10 November2009.
- ^abcS Ara, database entry,The combined table of GCVS Vols I-III and NL 67–78 with improved coordinates, General Catalogue of Variable StarsArchived20 June 2017 at theWayback Machine,Sternberg Astronomical Institute, Moscow, Russia. Accessed on line 10 November 2009.
- ^Stock, J.; Wroblewski, H. (1972). "A southern objective prism survey".Publ. Obs. Astron. Nacional.2:59.Bibcode:1972PDAUC...2...59S.
- ^abcdBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
- ^abcdeZalian, C.; Chadid, M.; Vernin, J.; Abe, L.; Agabi, A. (2016)."Antarctica photometry of the Blazhko RR Lyrae star S Arae".Monthly Notices of the Royal Astronomical Society.456(1): 192.Bibcode:2016MNRAS.456..192Z.doi:10.1093/mnras/stv2611.
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