Astronomy:Delta Volantis
From HandWiki
Short description: Luminous star in the constellation Volans
  | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Volans |
| Right ascension | 07h 16m 49.82387s[1] |
| Declination | −67° 57′ 25.7484″[1] |
| Apparent magnitude (V) | 3.97[2] |
| Characteristics | |
| Spectral type | F6 II[3] |
| U−B color index | +0.45[2] |
| B−V color index | +0.78[2] |
| Astrometry | |
| Radial velocity (Rv) | 22.7±0.3[4] km/s |
| Proper motion (μ) | RA: −4.43[1] mas/yr Dec.: +8.38[1] mas/yr |
| Parallax (π) | 4.42 ± 0.11[1] mas |
| Distance | 740 ± 20 ly (226 ± 6 pc) |
| Absolute magnitude (MV) | −2.6[5] |
| Details | |
| Mass | 5[5] M☉ |
| Radius | 36.1[6] R☉ |
| Luminosity | 1,095±57[6] L☉ |
| Surface gravity (log g) | 1.77[7][8] cgs |
| Temperature | 5,637[8] K |
| Metallicity [Fe/H] | +0.11[7][8] dex |
| Rotational velocity (v sin i) | 5.6±0.3[9] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Delta Volantis, Latinized from δ Volantis, is a solitary[11] star in the southern constellation Volans. It has an apparent visual magnitude of +3.97, which is bright enough to be seen with the naked eye. Based upon parallax measurements, is approximately 740 light years from the Solar System.
This is an F-type bright giant star with a stellar classification of F6 II. It has five times Sun's mass,[5] an estimated radius 36 times that of the Sun, and shines with more than a thousand times the Sun's luminosity.[6] The outer atmosphere has an effective temperature of 5,637 K,[8] giving it a yellow hue.[12]
References
- ↑ 1.0 1.1 1.2 1.3 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.
- ↑ 2.0 2.1 2.2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M.
- ↑ Malaroda, S. (August 1975), "Study of the F-type stars. I. MK spectral types", Astronomical Journal 80: 637–641, doi:10.1086/111786, Bibcode: 1975AJ.....80..637M.
- ↑ 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, Bibcode: 2006AstL...32..759G.
- ↑ 5.0 5.1 5.2 Smith, Graeme H.; Langland-Shula, Laura E. (May 2023), "FUSE Spectroscopy of Two Luminosity Class II Giants" (in en), Research Notes of the AAS 7 (5): 98, doi:10.3847/2515-5172/acd6e9, ISSN 2515-5172, Bibcode: 2023RNAAS...7...98S.
- ↑ 6.0 6.1 6.2 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017-10-01), "Fundamental parameters and infrared excesses of Tycho-Gaia stars", Monthly Notices of the Royal Astronomical Society 471 (1): 770–791, doi:10.1093/mnras/stx1433, ISSN 0035-8711, Bibcode: 2017MNRAS.471..770M. Delta Volantis' database entry at VizieR.
- ↑ 7.0 7.1 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, doi:10.1051/0004-6361/201014247, Bibcode: 2010A&A...515A.111S.
- ↑ 8.0 8.1 8.2 8.3 Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal 147 (6): 137. doi:10.1088/0004-6256/147/6/137. Bibcode: 2014AJ....147..137L. Delta Volantis' database entry at VizieR.
- ↑ Ammler-von Eiff, Matthias; Reiners, Ansgar (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, Bibcode: 2012A&A...542A.116A.
- ↑ "del Vol -- Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?Ident=delta+vol, retrieved 2016-09-04.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html, retrieved 2012-01-16
 |  |
