  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h 38m 31.32904s [1] |
| Declination | 21° 12′ 04.3763″ [1] |
| Apparent magnitude (V) | 4.82 [2] |
| Characteristics | |
| Spectral type | A0V [3] |
| U−B color index | −0.07 [2] |
| B−V color index | −0.02 [2] |
| Astrometry | |
| Radial velocity (Rv) | −17.10 [4] km/s |
| Proper motion (μ) |
RA: +78.741
[1]
mas/
yr Dec.: −4.572 [1] mas/ yr |
| Parallax (π) | 15.6257 ± 0.3374 mas [1] |
| Distance | 209 ± 5
ly (64 ± 1 pc) |
| Absolute magnitude (MV) | 0.56 [5] |
| Details | |
| Mass | 2.67 [3] M☉ |
| Luminosity | 71 [3] L☉ |
| Surface gravity (log g) | 4.20 [6] cgs |
| Temperature | 10,507 [6] K |
| Metallicity [Fe/H] | −0.15 [5] dex |
| Rotational velocity (v sin i) | 52 [3] km/s |
| Age | 254 [6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
29 Vulpeculae is a suspected astrometric binary star system in the northern constellation Vulpecula. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.82. [2] The system lies approximately 209 light years away from the Sun based on parallax, [1] and is a member of the IC 2391 supercluster. [8] It is moving closer to the Earth with a heliocentric radial velocity of −17 km/s. [4]
Radial velocity measurements from High Accuracy Radial Velocity Planet Searcher with an amplitude of 4 km/s indicate that it is a spectroscopic binary of unknown period. [9] The visible component is an A-type main-sequence star with a stellar classification of A0V, [3] and has some slight abundance anomalies that resemble a weak Am star. [10] It is catalogued as a shell star, showing spectral features of a cooler circumstellar jacket of gas, [11] and may be a proto-shell star. [10] The star is an estimated 254 [6] million years old with a relatively low projected rotational velocity of 52 km/s. [3] It has 2.67 [3] times the mass of the Sun and is radiating 71 [3] times the Sun's luminosity from its photosphere at an effective temperature of 10,507 K. [6]
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode: 2002yCat.2237....0D.
- ^ a b c d e f g h Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv: 1201.2052. Bibcode: 2012A&A...537A.120Z. doi: 10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
- ^ a b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
- ^ a b c d e David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv: 1501.03154. Bibcode: 2015ApJ...804..146D. doi: 10.1088/0004-637X/804/2/146. S2CID 33401607. Vizier catalog entry
- ^ "29 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-17.
- ^ Eggen, Olin J. (December 1995), "Reality Tests of Superclusters in the Young Disk Population", Astronomical Journal, 110: 2862, Bibcode: 1995AJ....110.2862E, doi: 10.1086/117734.
- ^ Borgniet, S.; Lagrange, A.-M.; Meunier, N.; Galland, F. (2017). "Extrasolar planets and brown dwarfs around AF-type stars". Astronomy and Astrophysics. 599. A57. arXiv: 1608.08257. Bibcode: 2017A&A...599A..57B. doi: 10.1051/0004-6361/201628805. S2CID 118723455.
- ^ a b Adelman, Saul J.; Albayrak, Berahitdin (October 1998). "Elemental abundance analyses with DAO spectrograms - XX. The early A stars epsilon Serpentis, 29 Vulpeculae and sigma Aquarii". Monthly Notices of the Royal Astronomical Society. 300 (2): 359–372. Bibcode: 1998MNRAS.300..359A. doi: 10.1046/j.1365-8711.1998.01859.x.
- ^ Hauck, B.; Jaschek, C. (February 2000). "A-shell stars in the Geneva system". Astronomy and Astrophysics. 354: 157–162. Bibcode: 2000A&A...354..157H.
| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h 38m 31.32904s [1] |
| Declination | 21° 12′ 04.3763″ [1] |
| Apparent magnitude (V) | 4.82 [2] |
| Characteristics | |
| Spectral type | A0V [3] |
| U−B color index | −0.07 [2] |
| B−V color index | −0.02 [2] |
| Astrometry | |
| Radial velocity (Rv) | −17.10 [4] km/s |
| Proper motion (μ) |
RA: +78.741
[1]
mas/
yr Dec.: −4.572 [1] mas/ yr |
| Parallax (π) | 15.6257 ± 0.3374 mas [1] |
| Distance | 209 ± 5
ly (64 ± 1 pc) |
| Absolute magnitude (MV) | 0.56 [5] |
| Details | |
| Mass | 2.67 [3] M☉ |
| Luminosity | 71 [3] L☉ |
| Surface gravity (log g) | 4.20 [6] cgs |
| Temperature | 10,507 [6] K |
| Metallicity [Fe/H] | −0.15 [5] dex |
| Rotational velocity (v sin i) | 52 [3] km/s |
| Age | 254 [6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
29 Vulpeculae is a suspected astrometric binary star system in the northern constellation Vulpecula. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.82. [2] The system lies approximately 209 light years away from the Sun based on parallax, [1] and is a member of the IC 2391 supercluster. [8] It is moving closer to the Earth with a heliocentric radial velocity of −17 km/s. [4]
Radial velocity measurements from High Accuracy Radial Velocity Planet Searcher with an amplitude of 4 km/s indicate that it is a spectroscopic binary of unknown period. [9] The visible component is an A-type main-sequence star with a stellar classification of A0V, [3] and has some slight abundance anomalies that resemble a weak Am star. [10] It is catalogued as a shell star, showing spectral features of a cooler circumstellar jacket of gas, [11] and may be a proto-shell star. [10] The star is an estimated 254 [6] million years old with a relatively low projected rotational velocity of 52 km/s. [3] It has 2.67 [3] times the mass of the Sun and is radiating 71 [3] times the Sun's luminosity from its photosphere at an effective temperature of 10,507 K. [6]
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode: 2002yCat.2237....0D.
- ^ a b c d e f g h Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv: 1201.2052. Bibcode: 2012A&A...537A.120Z. doi: 10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
- ^ a b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
- ^ a b c d e David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv: 1501.03154. Bibcode: 2015ApJ...804..146D. doi: 10.1088/0004-637X/804/2/146. S2CID 33401607. Vizier catalog entry
- ^ "29 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-17.
- ^ Eggen, Olin J. (December 1995), "Reality Tests of Superclusters in the Young Disk Population", Astronomical Journal, 110: 2862, Bibcode: 1995AJ....110.2862E, doi: 10.1086/117734.
- ^ Borgniet, S.; Lagrange, A.-M.; Meunier, N.; Galland, F. (2017). "Extrasolar planets and brown dwarfs around AF-type stars". Astronomy and Astrophysics. 599. A57. arXiv: 1608.08257. Bibcode: 2017A&A...599A..57B. doi: 10.1051/0004-6361/201628805. S2CID 118723455.
- ^ a b Adelman, Saul J.; Albayrak, Berahitdin (October 1998). "Elemental abundance analyses with DAO spectrograms - XX. The early A stars epsilon Serpentis, 29 Vulpeculae and sigma Aquarii". Monthly Notices of the Royal Astronomical Society. 300 (2): 359–372. Bibcode: 1998MNRAS.300..359A. doi: 10.1046/j.1365-8711.1998.01859.x.
- ^ Hauck, B.; Jaschek, C. (February 2000). "A-shell stars in the Geneva system". Astronomy and Astrophysics. 354: 157–162. Bibcode: 2000A&A...354..157H.