Astronomy:HD 32820
Observation data Epoch J2000.0 Equinox (celestial coordinates) | |
---|---|
Constellation | Caelum |
Right ascension | 05h 03m 53.95236s[1] |
Declination | −41° 44′ 41.8259″[1] |
Apparent magnitude (V) | 6.30±0.01[2] |
Characteristics | |
Spectral type | F8 V[3][4] |
U−B color index | +0.04[5] |
B−V color index | +0.53[5] |
Astrometry | |
Radial velocity (Rv) | 29.8±0.9[6] km/s |
Proper motion (μ) | RA: +22.005[1] mas/yr Dec.: +158.650[1] mas/yr |
Parallax (π) | 31.6204 ± 0.0176[1] mas |
Distance | 103.15 ± 0.06 ly (31.63 ± 0.02 pc) |
Absolute magnitude (MV) | +3.79[7] |
Details | |
Mass | 1.25[8] M☉ |
Radius | 1.33±0.03[9] R☉ |
Luminosity | 2.44±0.01[1] L☉ |
Surface gravity (log g) | 4.25[10] cgs |
Temperature | 6,227±68[9] K |
Metallicity [Fe/H] | −0.04[11] dex |
Rotational velocity (v sin i) | 8[12] km/s |
Age | 3.46[11] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 32820, also known as HR 1651, is a yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.3,[2] placing it near the limit of naked eye visibility. The object is located relatively close at a distance of 103 light years based on parallax measurements from Gaia DR3,[1] but is receding with a heliocentric radial velocity of 29.8 km/s.[6]
HD 32820 has a stellar classification of F8 V,[3][4] indicating that it is an ordinary F-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 125% the mass of the Sun[8] and 133% of its radius.[9] It radiates double the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,227 K.[9] HD 32820 is said to be 3.46 billion years old,[11] slightly younger than the Sun, and has a near solar iron abundance.[11] The star spins modestly with a projected rotational velocity of 8 km/s[12] and is chromospherically inactive[14]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.0 2.1 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 Malaroda, S. (August 1975). "Study of the F-type 1 MK spectral types.". The Astronomical Journal 80: 637. doi:10.1086/111786. ISSN 0004-6256. Bibcode: 1975AJ.....80..637M.
- ↑ 4.0 4.1 Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2 June 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal 132 (1): 161–170. doi:10.1086/504637. ISSN 0004-6256. Bibcode: 2006AJ....132..161G.
- ↑ 5.0 5.1 Cousins, A. W. J.; Lagerwey, H.C.; Shillington, F. A.; Stobie, R. S. (1969). "Photometry of Three δ Scuti Variables". Monthly Notes of the Astronomical Society of Southern Africa 28: 25. ISSN 0024-8266. Bibcode: 1969MNSSA..28...25C.
- ↑ 6.0 6.1 Steinmetz, Matthias et al. (27 July 2020). "The Sixth Data Release of the Radial Velocity Experiment (Rave). II. Stellar Atmospheric Parameters, Chemical Abundances, and Distances". The Astronomical Journal 160 (2): 83. doi:10.3847/1538-3881/ab9ab8. Bibcode: 2020AJ....160...83S.
- ↑ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A.
- ↑ 8.0 8.1 Mortier, A.; Santos, N. C.; Sousa, S.; Israelian, G.; Mayor, M.; Udry, S. (March 2013). "On the functional form of the metallicity-giant planet correlation". Astronomy & Astrophysics 551: A112. doi:10.1051/0004-6361/201220707. ISSN 0004-6361. Bibcode: 2013A&A...551A.112M.
- ↑ 9.0 9.1 9.2 9.3 Masana, E.; Jordi, C.; Ribas, I. (10 April 2006). "Effective temperature scale and bolometric corrections from 2MASS photometry". Astronomy & Astrophysics 450 (2): 735–746. doi:10.1051/0004-6361:20054021. ISSN 0004-6361. Bibcode: 2006A&A...450..735M.
- ↑ Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics 352: 555–562. ISSN 0004-6361. Bibcode: 1999A&A...352..555A.
- ↑ 11.0 11.1 11.2 11.3 Ibukiyama, A.; Arimoto, N. (21 October 2002). "HIPPARCOS age-metallicity relation of the solar neighbourhood disc stars". Astronomy & Astrophysics 394 (3): 927–941. doi:10.1051/0004-6361:20021157. ISSN 0004-6361. Bibcode: 2002A&A...394..927I.
- ↑ 12.0 12.1 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S. et al. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics 418 (3): 989–1019. doi:10.1051/0004-6361:20035959. ISSN 0004-6361. Bibcode: 2004A&A...418..989N.
- ↑ "HD 28454". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+28454.
- ↑ Pace, G. (22 February 2013). "Chromospheric activity as age indicator". Astronomy & Astrophysics 551: L8. doi:10.1051/0004-6361/201220364. ISSN 0004-6361. Bibcode: 2013A&A...551L...8P.
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