36 Serpentis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 51m 15.59418s[1] |
| Declination | −03° 05′ 25.7938″[1] |
| Apparent magnitude (V) | 5.10[2] 5.2 / 7.8[3] |
| Characteristics | |
| Spectral type | A3Vn |
| U−B color index | +0.07[4] |
| B−V color index | +0.12[4] |
| Astrometry | |
| Radial velocity (Rv) | -8[5] km/s |
| Proper motion (μ) | RA: -91.09[1] mas/yr Dec.: -28.21[1] mas/yr |
| Parallax (π) | 20.10 ± 0.33[1] mas |
| Distance | 162 ± 3 ly (49.8 ± 0.8 pc) |
| Orbit[3] | |
| Period (P) | 52.82 ± 0.30 yr |
| Semi-major axis (a) | 0.344 ± 0.002″ |
| Eccentricity (e) | 0.790 ± 0.002 |
| Inclination (i) | 100.1 ± 1.5° |
| Longitude of the node (Ω) | 73.2 ± 2.0° |
| Periastron epoch (T) | 2001.6 |
| Argument of periastron (ω) (secondary) | 66.3 ± 4.0° |
| Details | |
| Radius | 1.65[6] R☉ |
| Surface gravity (log g) | 3.89[7] cgs |
| Temperature | 8246[7] K |
| Metallicity [Fe/H] | -2.00[7] dex |
| Rotational velocity (v sin i) | 229[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
36 Serpentis, also known as b Serpentis, is a star in the constellation Serpens.[2] It is a binary with the primary component being a Lambda Boötis star, meaning that it has solar-like amounts of carbon, nitrogen, and oxygen, while containing very low amounts of iron peak elements.[9]
References
- 1 2 3 4 5 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- 1 2 "b Serpentis -- Double or multiple star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 8 July 2014.
- 1 2 Docobo, José A.; et al. (2010). "EMCCD Speckle Interferometry with the 6 m Telescope: Astrometric Measurements, Differential Photometry, and Orbits". The Astronomical Journal. 140 (4): 1078–1083. Bibcode:2010AJ....140.1078D. doi:10.1088/0004-6256/140/4/1078.
- 1 2 Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4. Bibcode:1966CoLPL...4...99J.
- ↑ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Bibcode:1953GCRV..C......0W.
- ↑ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367: 521–24. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
- 1 2 3 Prugniel, Ph.; Vauglin, I.; Koleva, M. (1986). "The atmospheric parameters and spectral interpolator for the MILES stars". Astronomy & Astrophysics. 531. arXiv:1104.4952. Bibcode:2011A&A...531A.165P. doi:10.1051/0004-6361/201116769.
- ↑ Royer, F.; Zorec, J.; Gómez, A. E. (2007). "Rotational velocities of A-type stars. III. Velocity distributions". Astronomy & Astrophysics. 463 (2): 671–682. arXiv:astro-ph/0610785. Bibcode:2007A&A...463..671R. doi:10.1051/0004-6361:20065224.
- ↑ Nikolov, G.; Atanasova, E.; Iliev, I. K.; Paunzen, E.; Barzova, I. S. (April 2008). "Spectroscopic orbit determination of two metal-weak dwarf stars: HD64491 and HD141851". Contributions of the Astronomical Observatory Skalnaté Pleso. 38 (2): 433–434. Bibcode:2008CoSka..38..433N.
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