Gliese 408

Last updated
Gliese 408
Observation data
Epoch J2000       Equinox J2000
Constellation Leo
Right ascension 11h 00m 04.25701s [1]
Declination +22° 49′ 58.6450″ [1]
Apparent magnitude  (V)10.020 [2]
Characteristics
Spectral type M2.5V [3]
U−B color index +1.22 [4]
B−V color index +1.55 [4]
V−R color index +1.08 [4]
R−I color index +1.31 [4]
Astrometry
Radial velocity (Rv)2.65±0.14 [1] km/s
Proper motion (μ)RA: -426.958 mas/yr [1]
Dec.: -282.298 mas/yr [1]
Parallax (π)148.1986±0.0253  mas [1]
Distance 22.008 ± 0.004  ly
(6.748 ± 0.001  pc)
Absolute magnitude  (MV)10.82 [4]
Details
Mass 0.406 ± 0.007 [5]   M☉
Radius 0.390±0.007 [6]   R☉
Luminosity (visual, LV)0.0037 [7]   L☉
Surface gravity (log g)4.79±0.05 [6]   cgs
Temperature 3483(35) [8]   K
Metallicity [Fe/H]−0.01(4) [8]   dex
Rotation 171.0±8.4  d [6]
Rotational velocity (v sin i)<2.3 [5]  km/s
Other designations
GJ 408, HIP 53767, LHS 6193, LTT 12942, NLTT 25946, Ross 104, TYC 1978-1286-1 [2]
Database references
SIMBAD data
ARICNS data

Gliese 408 is a star located 22.0 light-years (6.7 parsecs ) from the Solar System, located in the constellation of Leo. The stars nearest to Gliese 408 are Gliese 402, at 6.26 light years, and AD Leonis, at 6.54 light years. [7]

Gliese 408 is a red dwarf with a spectral type of M2.5V. [3] Much dimmer than the Sun, it has a luminosity of only 0.37% compared to the Sun, [7] but still it is much more luminous than other red dwarf stars, like Proxima Centauri. Its effective temperature is about 3400 to 3500 K; [3] its mass is about 41% compared to the Sun, [5] and its radius is about 43% that of the Sun. [9] Its rotational velocity is at most 2.3 km/s. No evidence of a circumstellar disk has been found around Gliese 408. [10]

References

  1. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  2. 1 2 "GJ 408". SIMBAD . Centre de données astronomiques de Strasbourg.
  3. 1 2 3 Lépine, Sébastien; et al. (2013). "A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky". The Astronomical Journal. 145 (4): 102. arXiv: 1206.5991 . Bibcode:2013AJ....145..102L. doi:10.1088/0004-6256/145/4/102. S2CID   117144290.
  4. 1 2 3 4 5 "ARICNS 4C00834". ARICNS. Archived from the original on 31 August 2021. Retrieved 23 January 2017.
  5. 1 2 3 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). "Rotational Velocities for M Dwarfs". The Astrophysical Journal . 704 (2): 975–988. arXiv: 0908.4092 . Bibcode:2009ApJ...704..975J. doi:10.1088/0004-637X/704/2/975. S2CID   119203469.
  6. 1 2 3 Donati, J.-F.; Lehmann, L. T.; et al. (October 2023). "Magnetic fields and rotation periods of M dwarfs from SPIRou spectra". Monthly Notices of the Royal Astronomical Society . 525 (2): 2015–2039. arXiv: 2307.14190 . Bibcode:2023MNRAS.525.2015D. doi: 10.1093/mnras/stad2301 .
  7. 1 2 3 "Catalogue Astrographique +23°468-46". The Internet Stellar Database. Archived from the original on 2017-02-02. Retrieved 2017-01-28.
  8. 1 2 Jahandar, Farbod; et al. (2025-01-01). "Chemical Fingerprints of M Dwarfs: High-resolution Spectroscopy on 31 M Dwarfs with SPIRou". The Astrophysical Journal. 978 (2) 154. arXiv: 2411.07377 . Bibcode: 2025ApJ...978..154J . doi: 10.3847/1538-4357/ad91a0 .
  9. ↑ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367 (2): 521–24. arXiv: astro-ph/0012289 . Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID   425754.
  10. ↑ Lestrade, J.-F.; Wyatt, M. C.; Bertoldi, F.; Dent, W. R. F.; Menten, K. M. (2006). "Search for cold debris disks around M-dwarfs". Astronomy and Astrophysics . 460 (3): 773–741. arXiv: astro-ph/0609574 . Bibcode:2006A&A...460..733L. doi:10.1051/0004-6361:20065873. S2CID   119328045.
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