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HR 3407

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Star in the constellation Vela This article is about C Velorum. For c Velorum, see HD 78004.
HR 3407
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 08 34 43.59703
Declination –49° 56′ 39.1359″
Apparent magnitude (V) 5.01
Characteristics
Evolutionary stage supergiant
Spectral type K1.5Ib
U−B color index +1.38
B−V color index +1.33
Variable type microvariable
Astrometry
Radial velocity (Rv)4.25±0.17 km/s
Proper motion (μ) RA: −14.236±0.322 mas/yr
Dec.: 18.540±0.353 mas/yr
Parallax (π)3.1501 ± 0.1571 mas
Distance1,040 ± 50 ly
(320 ± 20 pc)
Absolute magnitude (MV)–2.06
Details
Mass3.3±1.1 M
Radius73 R
Luminosity34.36 - 38.02 L
Surface gravity (log g)2.0 cgs
Temperature3,745±170 K
Metallicity −0.4 dex
Rotational velocity (v sin i)4.1 km/s
Other designations
C Vel, CD−49°3646, FK5 2674, HD 73155, HIP 42088, HR 3407, SAO 220138
Database references
SIMBADdata

HR 3407 is a single star in the southern constellation of Vela. It has the Bayer designation C Velorum; HR 3407 is the designation in the Bright Star Catalogue. It is an orange-hued star that is dimly visible to the naked eye with an apparent visual magnitude of 5.01. The distance to this object is approximately 1,040 light years based on parallax measurements, and it is drifting further away with a radial velocity of 4 km/s.

This object is an aging K-type supergiant star with a stellar classification of K1.5Ib. It has about three times the mass of the Sun and has expanded to around 71 times the Sun's radius. The latter is equivalent to 0.33 AU, or about one third the distance from the Sun to the Earth. It is spinning with a projected rotational velocity of 4.1. The star displays microvariability with a period of 10.99 cycles per day and an amplitude of 0.0036 in magnitude. It is radiating around 1,600 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,324 K.

References

  1. ^ 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.
  2. ^ Hoffleit, D.; Warren, W. H. (1995), "Bright Star Catalogue", VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H, 5050 (5th Revised ed.), Bibcode:1995yCat.5050....0H.
  3. ^ Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins Catalog of Revised MK Types for the Cooler Stars", The Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373, S2CID 123149047.
  4. ^ Koen, Chris; Eyer, Laurent (2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society, 331 (1): 45–59, arXiv:astro-ph/0112194, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x, S2CID 10505995.
  5. 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.
  6. ^ Stello, D.; et al. (2008), "Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses", The Astrophysical Journal Letters, 674 (1): L53 – L56, arXiv:0801.2155, Bibcode:2008ApJ...674L..53S, doi:10.1086/528936, S2CID 15094067.
  7. ^ Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal. 158 (1): 20. arXiv:1905.03744. Bibcode:2019AJ....158...20M. doi:10.3847/1538-3881/ab1cbd. S2CID 148571616.
  8. ^ Lèbre, A.; de Laverny, P.; Do Nascimento, J. D. Jr.; de Medeiros, J. R. (May 2006), "Lithium abundances and rotational behavior for bright giant stars" (PDF), Astronomy and Astrophysics, 450 (3): 1173–1179, Bibcode:2006A&A...450.1173L, doi:10.1051/0004-6361:20053485.
  9. ^ "C Vel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-04.
  10. 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.
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