HD 70514

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HD 70514
The gigantic HD 70514 compared to the Sun
HD 70514 (left) compared to the Sun
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Volans
Right ascension 08h 18m 18.86s[1]
Declination −65° 36′ 47.15″[1]
Apparent magnitude (V) 5.056±0.009[2]
Characteristics
Evolutionary stage red giant
Spectral type K1III[3]
B−V color index 1.129[4]
Astrometry
Radial velocity (Rv)1.98±0.26[1] km/s
Proper motion (μ) RA: 21.06±0.2[1] mas/yr
Dec.: 21.85±0.18[1] mas/yr
Parallax (π)11.02 ± 0.1[1] mas
Distance296 ± 3 ly
(90.7 ± 0.8 pc)
Absolute magnitude (MV)0.187[citation needed]
Details
Mass1.88±0.29[5] M☉
Radius14.6[6] R☉
Luminosity97±7[5] L☉
Temperature4,515[5] K
Metallicity [Fe/H]0.1±0.3[7] dex
Rotational velocity (v sin i)<1[8] km/s
Other designations
HD 70514 CPD-65 907, HIP 40680, HR 3280
Database references
SIMBADdata

HD 70514, also known as HR 3280, is a solitary star located in the borders of Volans. With a radial velocity of almost 2 km/s, it is slowly drifting away from the Solar System, and is currently located 295 light years away. It has an apparent magnitude of 5.05 and is visible to the naked eye under dark skies.

Properties[]

This is a "K1III" star. The "K1" suggests that this is an early K-type star. The "III" indicates that this is a giant star that has exhausted hydrogen at its core. It has 1.9 times the mass of the Sun but has ballooned to 15 times its radius. It radiates at 98 solar luminosities, and has a similar metallicity to the Sun. Like most giants, it rotates rather slowly.

References[]

  1. ^ Jump up to: 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.
  2. ^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000-03-01). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. ^ Kharchenko, N. V. (2001-10-01). "All-sky compiled catalogue of 2.5 million stars". Kinematika i Fizika Nebesnykh Tel. 17: 409–423. Bibcode:2001KFNT...17..409K. ISSN 0233-7665.
  4. ^ Allende Prieto, C.; Lambert, D. L. (1999-12-01). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. Bibcode:1999A&A...352..555A. ISSN 0004-6361.
  5. ^ Jump up to: a b c Stello, D.; Bruntt, H.; Preston, H.; Buzasi, D. (2008). "Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses". The Astrophysical Journal. 674 (1): L53–L56. arXiv:0801.2155. Bibcode:2008ApJ...674L..53S. doi:10.1086/528936. S2CID 15094067.
  6. ^ Stassun, Keivan G.; Oelkers, Ryan J.; Paegert, Martin; Torres, Guillermo; Pepper, Joshua; De Lee, Nathan; Collins, Kevin; Latham, David W.; Muirhead, Philip S.; Chittidi, Jay; Rojas-Ayala, Bárbara (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158: 138. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. hdl:1721.1/124721. ISSN 0004-6256.
  7. ^ Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics. 633: A34. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360. ISSN 0004-6361.
  8. ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014-01-01). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics. 561: A126. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 0004-6361.
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