S Boötis is a Mira variable in the constellation Boötes. It ranges between magnitudes 7.8 and 13.8 over a period of approximately 270 days.[3] It is too faint to be seen with the naked eye, however when it is near maximum brightness it can be seen with binoculars.[9]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 22m 52.9255s[2] |
| Declination | +53° 48′ 37.307″[2] |
| Apparent magnitude (V) | 7.4 - 14.0[3] |
| Characteristics | |
| Spectral type | M3e-6e[3] |
| B−V color index | +1.3[4] |
| Variable type | Mira[3] |
| Astrometry | |
| Radial velocity (Rv) | −17.00[5] km/s |
| Proper motion (μ) | RA: +7.283[2] mas/yr Dec.: −12.789[2] mas/yr |
| Parallax (π) | 0.5746 ± 0.0407 mas[2] |
| Distance | 5,700 ± 400 ly (1,700 ± 100 pc) |
| Details | |
| Mass | 2.7[6] M☉ |
| Radius | 491[7] R☉ |
| Luminosity | 18,793[6] L☉ |
| Surface gravity (log g) | −0.53[6] cgs |
| Temperature | 3,007[6] K |
| Age | 631[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Boötis was discovered at Bonn Observatory by Friedrich Wilhelm Argelander in 1860.[10][11][12]
References
edit- ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
- ^ 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.
- ^ a b c d VSX (4 January 2010). "S Boötis". AAVSO Website. American Association of Variable Star Observers. Retrieved 17 July 2023.
- ^ 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.
- ^ 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.
- ^ a b c d e Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics. 662: A125. arXiv:2201.03252. Bibcode:2022A&A...662A.125F. doi:10.1051/0004-6361/202141828. S2CID 245837778.
- ^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
- ^ "S Bootis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 28 September 2014.
- ^ Macrobert, Alan. "The Stellar Magnitude System". Sky and Telescope. American Astronomical Society. Retrieved 17 July 2023.
- ^ Cannon, Annie J. (1907). "Second catalogue of variable stars". Annals of Harvard College Observatory. 55 (1): 1–94. Retrieved 17 July 2023.
- ^ Isles, J. E.; Saw, D. R. B. (February 1987). "Mira Stars, - I. R Ari, R Aur, X Aur, R Boo and S Boo". Journal of the British Astronomical Association. 97 (2): 106-116. Bibcode:1987JBAA...97..106I. Retrieved 17 July 2023.
- ^ "S Boo". The International Variable Star Index. AAVSO. Retrieved 17 July 2023.
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