| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 38m 48.99425s [1] |
| Declination | +21° 57′ 41.0616″ [1] |
| Apparent magnitude (V) | 5.43 [2] |
| Characteristics | |
| Spectral type | A7 V [3] |
| U−B color index | +0.13 [2] |
| B−V color index | +0.16 [2] |
| Astrometry | |
| Radial velocity (Rv) | +8.0±4.2 [4] km/s |
| Proper motion (μ) |
RA: −7.47
[1]
mas/
yr Dec.: −15.90 [1] mas/ yr |
| Parallax (π) | 9.68 ± 0.76 mas [1] |
| Distance | 340 ± 30
ly (103 ± 8 pc) |
| Absolute magnitude (MV) | +0.40 [5] |
| Details | |
| ν Ari A | |
| Mass | 2.43±0.06 [6] M☉ |
| Radius | 1.8 [7] R☉ |
| Luminosity | 63.5 [6] L☉ |
| Surface gravity (log g) | 3.5±0.25 [8] cgs |
| Temperature | 8,000±500 [8] K |
| Rotational velocity (v sin i) | 133 [6] km/s |
| Age | 621+269 −268 [8] Myr |
| ν Ari B | |
| Mass | 1.0±0.03 [8] M☉ |
| Temperature | 5,551±107 [8] K |
| Metallicity [Fe/H] | 0.0 [8] dex |
| Rotational velocity (v sin i) | 10 [8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Nu Arietis, Latinized from ν Arietis, is the Bayer designation for a white-hued star in the northern constellation of Aries. It is faintly visible to the naked eye with an apparent visual magnitude of +5.43. [2] Based upon an annual parallax shift of 9.68 mas as seen from Earth, [1] it is located roughly 340 light years from the Sun. It is moving away from the Sun with a radial velocity of 8 km/s. [4]
This is an A-type main sequence star with a stellar classification of A7 V. [3] Nu Arietis has an estimated 2.4 [6] times the mass of the Sun and about 1.8 [7] times the Sun's radius. The star is radiating 63.5 [6] times the Sun's luminosity from its photosphere at an effective temperature of around 8,000 K. [8] It is roughly 621 [8] million years old and is spinning with a projected rotational velocity of 133 km/s. [6] A close companion was discovered in 2016 using the direct spectral detection method. [8]
- ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c d Oja, T. (April 1983), "UVB photometry of FK4 and FK4 Supplement stars", Astronomy and Astrophysics Supplement Series, 52: 131–134, Bibcode: 1983A&AS...52..131O.
- ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode: 1969AJ.....74..375C, doi: 10.1086/110819.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ 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.
- ^ a b c d e f Huang, Wenjin; et al. (October 2010), "A Stellar Rotation Census of B Stars: From ZAMS to TAMS", The Astrophysical Journal, 722 (1): 605–619, arXiv: 1008.1761, Bibcode: 2010ApJ...722..605H, doi: 10.1088/0004-637X/722/1/605, S2CID 118532653.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 5211–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b c d e f g h i j Gullikson, Kevin; et al. (August 2016), "The Close Companion Mass-ratio Distribution of Intermediate-mass Stars", The Astronomical Journal, 152 (2): 13, arXiv: 1604.06456, Bibcode: 2016AJ....152...40G, doi: 10.3847/0004-6256/152/2/40, S2CID 119179065, 40.
-
^
"nu. Ari".
SIMBAD.
Centre de données astronomiques de Strasbourg. Retrieved 2017-09-28.
{{ cite web}}: CS1 maint: postscript ( link)
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 38m 48.99425s [1] |
| Declination | +21° 57′ 41.0616″ [1] |
| Apparent magnitude (V) | 5.43 [2] |
| Characteristics | |
| Spectral type | A7 V [3] |
| U−B color index | +0.13 [2] |
| B−V color index | +0.16 [2] |
| Astrometry | |
| Radial velocity (Rv) | +8.0±4.2 [4] km/s |
| Proper motion (μ) |
RA: −7.47
[1]
mas/
yr Dec.: −15.90 [1] mas/ yr |
| Parallax (π) | 9.68 ± 0.76 mas [1] |
| Distance | 340 ± 30
ly (103 ± 8 pc) |
| Absolute magnitude (MV) | +0.40 [5] |
| Details | |
| ν Ari A | |
| Mass | 2.43±0.06 [6] M☉ |
| Radius | 1.8 [7] R☉ |
| Luminosity | 63.5 [6] L☉ |
| Surface gravity (log g) | 3.5±0.25 [8] cgs |
| Temperature | 8,000±500 [8] K |
| Rotational velocity (v sin i) | 133 [6] km/s |
| Age | 621+269 −268 [8] Myr |
| ν Ari B | |
| Mass | 1.0±0.03 [8] M☉ |
| Temperature | 5,551±107 [8] K |
| Metallicity [Fe/H] | 0.0 [8] dex |
| Rotational velocity (v sin i) | 10 [8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Nu Arietis, Latinized from ν Arietis, is the Bayer designation for a white-hued star in the northern constellation of Aries. It is faintly visible to the naked eye with an apparent visual magnitude of +5.43. [2] Based upon an annual parallax shift of 9.68 mas as seen from Earth, [1] it is located roughly 340 light years from the Sun. It is moving away from the Sun with a radial velocity of 8 km/s. [4]
This is an A-type main sequence star with a stellar classification of A7 V. [3] Nu Arietis has an estimated 2.4 [6] times the mass of the Sun and about 1.8 [7] times the Sun's radius. The star is radiating 63.5 [6] times the Sun's luminosity from its photosphere at an effective temperature of around 8,000 K. [8] It is roughly 621 [8] million years old and is spinning with a projected rotational velocity of 133 km/s. [6] A close companion was discovered in 2016 using the direct spectral detection method. [8]
- ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c d Oja, T. (April 1983), "UVB photometry of FK4 and FK4 Supplement stars", Astronomy and Astrophysics Supplement Series, 52: 131–134, Bibcode: 1983A&AS...52..131O.
- ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode: 1969AJ.....74..375C, doi: 10.1086/110819.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ 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.
- ^ a b c d e f Huang, Wenjin; et al. (October 2010), "A Stellar Rotation Census of B Stars: From ZAMS to TAMS", The Astrophysical Journal, 722 (1): 605–619, arXiv: 1008.1761, Bibcode: 2010ApJ...722..605H, doi: 10.1088/0004-637X/722/1/605, S2CID 118532653.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 5211–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b c d e f g h i j Gullikson, Kevin; et al. (August 2016), "The Close Companion Mass-ratio Distribution of Intermediate-mass Stars", The Astronomical Journal, 152 (2): 13, arXiv: 1604.06456, Bibcode: 2016AJ....152...40G, doi: 10.3847/0004-6256/152/2/40, S2CID 119179065, 40.
-
^
"nu. Ari".
SIMBAD.
Centre de données astronomiques de Strasbourg. Retrieved 2017-09-28.
{{ cite web}}: CS1 maint: postscript ( link)