14 Vulpeculae

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14 Vulpeculae
Vulpecula IAU.svg
Red circle.svg
14 Vul in the constellation Vulpecula (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Vulpecula
Right ascension 19h 59m 10.5367s [1]
Declination +23° 06′ 04.604″ [1]
Apparent magnitude  (V)5.68 [2]
Characteristics
Spectral type F1 Vn [3]
B−V color index 0.345±0.004 [2]
Astrometry
Radial velocity (Rv)−38.0±3.7 [4] km/s
Proper motion (μ)RA: −68.157±0.100 [1] mas/yr
Dec.: 6.926±0.125 [1] mas/yr
Parallax (π)18.7753±0.1714  mas [1]
Distance 174 ± 2  ly
(53.3 ± 0.5  pc)
Absolute magnitude  (MV)2.23 [2]
Details
Mass 1.52 [5]   M☉
Luminosity 11.09 [2]   L☉
Surface gravity (log g)3.81±0.14 [5]   cgs
Temperature 6,938±236 [5]   K
Metallicity [Fe/H]−0.36 [4]   dex
Rotational velocity (v sin i)150 [6]  km/s
Age 1.743 [5]   Gyr
Other designations
14 Vul, BD+22° 3872, HD 189410, HIP 98375, HR 7641, SAO 88016 [7]
Database references
SIMBAD data

14 Vulpeculae is a single, [8] yellow-white hued star in the northern constellation of Vulpecula and proximate to the Dumbbell Nebula (M 27) on the celestial sphere, although actually much closer to the Earth. [9] It is a dim star that is faintly visible to the naked eye with an apparent visual magnitude of 5.68. [2] The distance to 14 Vul, as determined from its annual parallax shift of 18.7753±0.1714, [1] is around 174  light years. It is moving nearer with a heliocentric radial velocity of about −38 km/s, [4] and will make its closest approach in a million years when comes to within about 62 ly (19.04 pc). [2]

This is an F-type main-sequence star with a stellar classification of F1 Vn, [3] where the 'n' notation indicates nebulous lines due to rapid rotation. At the estimated age of 1.7 [5]  billion years old, it is spinning with a projected rotational velocity of 150 [6]  km/s and has sub-solar metallicity. [4] The star has 1.5 [5] times the mass of the Sun and is radiating 11 [2] times the Sun's luminosity from its photosphere at an effective temperature of about 6,938 K. [5]

References

  1. 1 2 3 4 5 6 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657 . S2CID   227254300. (Erratum:  doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 Abt, Helmut A.; Morrell, Nidia I. (1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode:1995ApJS...99..135A, doi: 10.1086/192182 .
  4. 1 2 3 4 Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy & Astrophysics, 530 (A138): 21, arXiv: 1103.4651 , Bibcode:2011A&A...530A.138C, doi:10.1051/0004-6361/201016276, S2CID   56118016.
  5. 1 2 3 4 5 6 7 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.
  6. 1 2 Bernacca, P. L.; Perinotto, M. (1970), "A catalogue of stellar rotational velocities", Contributi Osservatorio Astronomico di Padova in Asiago, 239 (1): 1, Bibcode:1970CoAsi.239....1B.
  7. ↑ "14 Vul". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2018-04-13.
  8. ↑ 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, arXiv: 0806.2878 , Bibcode:2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x , S2CID   14878976.
  9. ↑ Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E.; et al. (2003), "Astrometry with The Hubble Space Telescope: A Parallax of the Central Star of the Planetary Nebula NGC 6853", Astronomical Journal , 126 (5): 2549–2556, arXiv: astro-ph/0307449 , Bibcode:2003AJ....126.2549B, doi:10.1086/378603, S2CID   8562211.
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