51 Arietis

51 Arietis
Observation data; Equinox J2000.0]] (ICRS)
Constellation	Aries
Right ascension	03h 02m 26.02628s
Declination	+26° 36′ 33.2602″
Apparent magnitude (V)	6.623 ± 0.005
Characteristics
Spectral type	G8 V
B−V color index	0.715
Astrometry
Radial velocity (Rv)	+9.5±0.1 km/s
Proper motion (μ)	RA: +233.122 mas/yr ; Dec.: –168.438 mas/yr
Parallax (π)	47.1551 ± 0.0603 mas
Distance	69.17 ± 0.09 ly ; (21.21 ± 0.03 pc)
Absolute bolometric; magnitude (Mbol)	4.85±0.07
Details
Mass	1.04 M☉
Radius	0.99 R☉
Luminosity	0.92 L☉
Surface gravity (log g)	4.46 cgs
Temperature	5,666 K
Metallicity [Fe/H]	0.15 dex
Rotational velocity (v sin i)	4.08 km/s
Age	1.40 Gyr
Other designations
	51 Ari, BD+26°503, GJ 120.2, HD 18803, HIP 14150, SAO 75696
Database references
SIMBAD	data
ARICNS	data

Short description: Star in the constellation Aries

51 Arietis is a star in the northern constellation of Aries. 51 Arietis is the Flamsteed designation. It is a dim, yellow-hued star – a challenge to view with the naked eye, having an apparent visual magnitude of 6.6.^[2] Based upon parallax measurements, the star is located at an estimated distance of 67.3 light-years (20.6 parsecs) from the Sun.^[8] It is receding from the Earth with a heliocentric radial velocity of +9.5 km/s,^[5] and is a member of the IC 2391 moving group.^[3]

This is an ordinary G-type main sequence star with a stellar classification of G8 V.^[3] Similar to the Sun, it has 1.04 times the mass and 0.99 times the Sun's radius.^[2] It is 1.4^[5] billion years old with a leisurely rotation rate, showing a projected rotational velocity of 4 km/s.^[4] The atmospheric metallicity is higher than solar.^[6] The star radiates 92%^[6] of the Sun's luminosity from its photosphere at an effective temperature of 5,666 K.^[6] This heat gives it the golden-hued glow of a G-type star.^[9]

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 Fuhrmann, Klaus (February 2008), "Nearby stars of the Galactic disc and halo - IV", Monthly Notices of the Royal Astronomical Society 384 (1): 173–224, 176, doi:10.1111/j.1365-2966.2007.12671.x, Bibcode: 2008MNRAS.384..173F.
↑ ^3.0 ^3.1 ^3.2 Montes, D. et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society 328 (1): 45–63, doi:10.1046/j.1365-8711.2001.04781.x, Bibcode: 2001MNRAS.328...45M.
↑ ^4.0 ^4.1 ^4.2 Martínez-Arnáiz, R. et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics 520: A79, doi:10.1051/0004-6361/200913725, Bibcode: 2010A&A...520A..79M, http://eprints.ucm.es/37826/1/davidmontes17libre.pdf, retrieved 2018-11-04.
↑ ^5.0 ^5.1 ^5.2 ^5.3 Casagrande, L. et al. (June 2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy and Astrophysics 530: A138, doi:10.1051/0004-6361/201016276, Bibcode: 2011A&A...530A.138C.
↑ ^6.0 ^6.1 ^6.2 ^6.3 ^6.4 ^6.5 ^6.6 Takeda, Yoichi (April 2007), "Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database", Publications of the Astronomical Society of Japan 59 (2): 335–356, doi:10.1093/pasj/59.2.335, Bibcode: 2007PASJ...59..335T.
↑ "LTT 10989 -- High proper-motion Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?Ident=51+Arietis, retrieved 2012-08-16.
↑ van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
↑ "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html, retrieved 2012-01-16

External links

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Original source: https://en.wikipedia.org/wiki/51 Arietis. Read more

[GaiaDR2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.

[mnras384_1_173-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 Fuhrmann, Klaus (February 2008), "Nearby stars of the Galactic disc and halo - IV", Monthly Notices of the Royal Astronomical Society 384 (1): 173–224, 176, doi:10.1111/j.1365-2966.2007.12671.x, Bibcode: 2008MNRAS.384..173F.

[mnras328_1_45-3] 3.0 ^3.1 ^3.2 Montes, D. et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society 328 (1): 45–63, doi:10.1046/j.1365-8711.2001.04781.x, Bibcode: 2001MNRAS.328...45M.

[aaa520_A79-4] 4.0 ^4.1 ^4.2 Martínez-Arnáiz, R. et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics 520: A79, doi:10.1051/0004-6361/200913725, Bibcode: 2010A&A...520A..79M, http://eprints.ucm.es/37826/1/davidmontes17libre.pdf, retrieved 2018-11-04.

[Casagrande2011-5] 5.0 ^5.1 ^5.2 ^5.3 Casagrande, L. et al. (June 2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy and Astrophysics 530: A138, doi:10.1051/0004-6361/201016276, Bibcode: 2011A&A...530A.138C.

[pasj59_2_335-6] 6.0 ^6.1 ^6.2 ^6.3 ^6.4 ^6.5 ^6.6 Takeda, Yoichi (April 2007), "Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database", Publications of the Astronomical Society of Japan 59 (2): 335–356, doi:10.1093/pasj/59.2.335, Bibcode: 2007PASJ...59..335T.

[SIMBAD-7] "LTT 10989 -- High proper-motion Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?Ident=51+Arietis, retrieved 2012-08-16.

[aaa474_2_653-8] van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.

[csiro-9] "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html, retrieved 2012-01-16

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Observation data Equinox J2000.0]] (ICRS)
Constellation	Aries
Right ascension	03^h 02^m 26.02628^s^[1]
Declination	+26° 36′ 33.2602″^[1]
Apparent magnitude (V)	6.623 ± 0.005^[2]
Characteristics
Spectral type	G8 V^[3]
B−V color index	0.715^[4]
Astrometry

Radial velocity (R_v)	+9.5±0.1^[5] km/s
Proper motion (μ)	RA: +233.122^[1] mas/yr Dec.: –168.438^[1] mas/yr
Parallax (π)	47.1551 ± 0.0603^[1] mas
Distance	69.17 ± 0.09 ly (21.21 ± 0.03 pc)
Absolute bolometric magnitude (M_bol)	4.85±0.07^[2]

Details

Mass	1.04^[2] `M`_☉
Radius	0.99^[2] `R`_☉
Luminosity	0.92^[6] `L`_☉
Surface gravity (log g)	4.46^[6] cgs
Temperature	5,666^[6] K
Metallicity [Fe/H]	0.15^[6] dex
Rotational velocity (v sin i)	4.08^[4] km/s
Age	1.40^[5] Gyr

Other designations
51 Ari, BD+26°503, GJ 120.2, HD 18803, HIP 14150, SAO 75696^[7]
Database references
SIMBAD	data
ARICNS	data

51 Arietis

Topic: Astronomy

References

External links