HD 83058

This article is about L Velorum. For l Velorum, see HD 79917.
HD 83058
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 09h 34m 08.793s[1]
Declination −51° 15′ 18.95″[1]
Apparent magnitude (V) 5.00[2]
Characteristics
Evolutionary stage subgiant
Spectral type B2 IV[3]
U−B color index −0.97[2]
B−V color index −0.19[2]
Astrometry
Radial velocity (Rv)+16.5±3.0[4] km/s
Proper motion (μ) RA: −130.55[1] mas/yr
Dec.: +42.98[1] mas/yr
Parallax (π)3.4252 ± 0.1907 mas[1]
Distance950 ± 50 ly
(290 ± 20 pc)
Absolute magnitude (MV)−2.84[2]
Details
primary
Mass9.3[5] M☉
Radius5.405[6] R☉
Luminosity2,686[6] L☉
Surface gravity (log g)3.779[6] cgs
Temperature17,887[6] K
Rotational velocity (v sin i)64±2[4] km/s
Age14.1[5] Myr
secondary
Rotational velocity (v sin i)24±2[4] km/s
Other designations
L Vel, CD−50°4270, FK5 2764, HD 83058, HIP 46950, HR 3819, SAO 237107[7]
Database references
SIMBADdata

HD 83058 is a subgiant star in the constellation Vela and a spectroscopic binary. It is visible to the naked eye with an apparent visual magnitude of 5.0. Based upon an annual parallax shift of 3.4254 mas, it is located 950 light-years from the Sun. The system is moving further away with a heliocentric radial velocity of +35 km/s.

HD 83058 has generally been considered to be a single star,[8] but high-resolution spectra show it to be a double-lined spectroscopic binary.[9] The two components have approximately the same spectral type.[4] Line-profile variations have been detected which suggest that at least one component pulsates, as is common for stars of this spectral class.[10]

HD 83058 was proposed as a runaway star from a supernova explosion. However, the discovery that it is a binary makes this unlikely.[4]

  1. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference melnik2020 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference houk1975 was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference jilinski2010 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference tetzlaff2011 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference mcdonald2017 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference chini2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference telting2006 was invoked but never defined (see the help page).