Astronomy:HD 29697
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Short description: Star in the constellation Taurus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 41m 18.85634s[2] |
| Declination | +20° 54′ 05.4456″[2] |
| Apparent magnitude (V) | 7.94 - 8.33[3] |
| Characteristics | |
| Spectral type | K3 V[4] |
| U−B color index | +0.94[5] |
| B−V color index | +1.09[5] |
| Variable type | BY Dra[6] |
| Astrometry | |
| Radial velocity (Rv) | +11[7] km/s |
| Proper motion (μ) | RA: −232.38±1.05[2] mas/yr Dec.: −254.28±0.69[2] mas/yr |
| Parallax (π) | 75.82 ± 1.14[2] mas |
| Distance | 43.0 ± 0.6 ly (13.2 ± 0.2 pc) |
| Absolute magnitude (MV) | +7.49[8] |
| Details | |
| Mass | 0.75[9] M☉ |
| Radius | 0.67[9] R☉ |
| Luminosity | 0.15[9] L☉ |
| Surface gravity (log g) | 4.50[6] cgs |
| Temperature | 4,454±11.4[10] K |
| Metallicity [Fe/H] | 0.01[6] dex |
| Rotational velocity (v sin i) | 9.73[6] km/s |
| Age | 49±37[9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
HD 29697 (Gliese 174, V834 Tauri) is a variable star of BY Draconis type in the constellation Taurus. It has an apparent magnitude around 8 and is approximately 43 ly away.
Description
HD 29697 is the Henry Draper Catalogue number of this star. It is also known by its designation in the Gliese Catalogue of Nearby Stars, Gliese 174, and its variable star designation V834 Tauri.
V834 Tauri is a BY Draconis variable with maximum and minimum apparent magnitudes of 7.94 and 8.33 respectively,[3] so it is never visible to the naked eye.
The star has been examined for indications of a circumstellar disk using the Spitzer Space Telescope, but no statistically-significant infrared excess was detected.[9]
References
- ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html.
- ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ 3.0 3.1 Samus, N. N. et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1. Bibcode: 2009yCat....102025S.
- ↑ Montes, D. et al. (2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society 328 (1): 45–63, doi:10.1046/j.1365-8711.2001.04781.x, Bibcode: 2001MNRAS.328...45M, http://eprints.ucm.es/30941/1/castrorubio18libre.pdf, retrieved 2018-11-04
- ↑ 5.0 5.1 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M
- ↑ 6.0 6.1 6.2 6.3 Mishenina, T. V. et al. (November 2012), "Activity and the Li abundances in the FGK dwarfs", Astronomy & Astrophysics 547: 8, doi:10.1051/0004-6361/201118412, A106, Bibcode: 2012A&A...547A.106M
- ↑ Evans, D. S. (June 20–24, 1966). "Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30". in Batten, Alan Henry; Heard, John Frederick. 30. University of Toronto: International Astronomical Union. 57. Bibcode: 1967IAUS...30...57E.
- ↑ Anderson, E; Francis, Ch (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 9.0 9.1 9.2 9.3 9.4 Plavchan, Peter et al. (June 2009), "New Debris Disks Around Young, Low-Mass Stars Discovered with the Spitzer Space Telescope", The Astrophysical Journal 698 (2): 1068–1094, doi:10.1088/0004-637X/698/2/1068, Bibcode: 2009ApJ...698.1068P
- ↑ Kovtyukh, V. V. et al. (2003), "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios", Astronomy and Astrophysics 411 (3): 559–564, doi:10.1051/0004-6361:20031378, Bibcode: 2003A&A...411..559K
- ↑ "HD 29697". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+29697.
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