Astronomy:HD 35184
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Short description: Star in the constellation Mensa
| Observation data Epoch J2000.0 Equinox (celestial coordinates) | |
|---|---|
| Constellation | Mensa |
| Right ascension | 05h 15m 24.8374s[1] |
| Declination | −73° 35′ 18.5123″[1] |
| Apparent magnitude (V) | 6.50±0.01[2] |
| Characteristics | |
| Spectral type | A6 V[3] |
| B−V color index | +0.15[4] |
| Astrometry | |
| Radial velocity (Rv) | 13.6±0.6[5] km/s |
| Proper motion (μ) | RA: −22.228[1] mas/yr Dec.: +5.616[1] mas/yr |
| Parallax (π) | 8.7050 ± 0.0209[1] mas |
| Distance | 374.7 ± 0.9 ly (114.9 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.26[4] |
| Details | |
| Mass | 2.15±0.04[6] M☉ |
| Radius | 2.8±0.1[7] R☉ |
| Luminosity | 24.5[8] L☉ |
| Surface gravity (log g) | 3.82+0.09−0.07[7] cgs |
| Temperature | 8,034[8] K |
| Metallicity [Fe/H] | −0.01[9] dex |
| Rotational velocity (v sin i) | 92.4±2.9[10] km/s |
| Age | 674[9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 35184 is a solitary star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.50, which the maximum naked eye visibility. Located 375 light years away, it is receding with a heliocentric radial velocity of 13.6 km/s.
HD 35184 has a stellar classification of A6 V, indicating that it is an ordinary A-type main-sequence star. At present it has 2.15 times the mass of the Sun[6] and 2.8 times the radius of the Sun.[7] It shines at 24.5 solar luminosity from its photosphere at an effective temperature of 8,034 K,[8] giving it a white hue. HD 35184 is 674 million years old – 79.6% through its main sequence lifetime[6] – and spins with a projected rotational velocity of 92 km/s−1.[10]
References
- ↑ 1.0 1.1 1.2 1.3 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 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.
- ↑ Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0.. Bibcode: 1975mcts.book.....H.
- ↑ 4.0 4.1 Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation" (in en). Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A.
- ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. ISSN 1063-7737. Bibcode: 2006AstL...32..759G.
- ↑ 6.0 6.1 6.2 Zorec, J.; Royer, F. (January 2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. ISSN 0004-6361. Bibcode: 2012A&A...537A.120Z.
- ↑ 7.0 7.1 7.2 Stassun, Keivan G. et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256. Bibcode: 2019AJ....158..138S.
- ↑ 8.0 8.1 8.2 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". Monthly Notices of the Royal Astronomical Society 427 (1): 343–357. doi:10.1111/j.1365-2966.2012.21873.x. ISSN 0035-8711. Bibcode: 2012MNRAS.427..343M.
- ↑ 9.0 9.1 Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters 38 (12): 771–782. doi:10.1134/S1063773712120031. ISSN 0320-0108. Bibcode: 2012AstL...38..771G.
- ↑ 10.0 10.1 Ammler-von Eiff, M.; Reiners, A. (June 2012). "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?". Astronomy & Astrophysics 542: A116. doi:10.1051/0004-6361/201118724. ISSN 0004-6361. Bibcode: 2012A&A...542A.116A.
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