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From Wikipedia, the free encyclopedia
Not to be confused with Andromeda III.
3 Andromedae
Diagram showing star positions and boundaries of the Andromeda constellation and its surroundings
3 Andromedae (circled) in a close northerly run-of-stars asterism – 5, 7, 8, 11 being close by, south-westward.
Observation data
Epoch J2000       Equinox J2000
Constellation Andromeda
Right ascension 23h 04m 10.98269s [1]
Declination +50° 03′ 07.5255″ [1]
Apparent magnitude (V) 4.64 [2]
Characteristics
Evolutionary stage giant [3]
Spectral type K0 IIIb [4]
B−V color index 1.058±0.003 [2]
Astrometry
Radial velocity (Rv)−34.87±0.12 [1] km/s
Proper motion (μ) RA: 165.837 [1]  mas/ yr [1]
Dec.: 167.716  mas/ yr [1]
Parallax (π)17.2629 ± 0.0918  mas [1]
Distance189 ± 1  ly
(57.9 ± 0.3  pc)
Absolute magnitude (MV)0.97 [2]
Details
Mass1.71 [5]  M☉
Radius10 [6]  R☉
Luminosity49 [5]  L☉
Surface gravity (log g)2.61±0.11 [7]  cgs
Temperature4,668±45 [5]  K
Metallicity [Fe/H]−0.08 [3]  dex
Rotational velocity (v sin i)1.0 [8] km/s
Age2.27 [5]  Gyr
Other designations
3 And, BD+49° 4028, HD 218031, HIP 113919, HR 8780, SAO 52649, PPM 41448, LTT 16772 [9]
Database references
SIMBAD data

3 Andromedae, abbreviated 3 And, is a single [10] star in the northern constellation of Andromeda. 3 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.64. [2] The distance to this star, as determined from an annual parallax shift of 17.3  mas, [1] is 181  light years. It is moving closer to the Earth with a heliocentric radial velocity of −35 km/s, [11] and has a relatively large proper motion, traversing the celestial sphere at 0.236 ″·yr−1. [12]

This is an evolved giant star with a stellar classification of K0 IIIb, [4] where the 'b' suffix indicated a lower luminosity giant. It is a red clump star, [3] which means it is generating energy through helium fusion at its core. This star has an estimated 1.7 [5] times the mass of the Sun (M☉), and, at the age of 2.3 [5] billion years, has expanded to 10 times the Sun's radius (R☉). [6] It is radiating 49 [5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,668 K. [5]

References

  1. ^ a b c d e f g 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. ^ a b c d 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.
  3. ^ a b c Tautvaišienė, G.; et al. (December 2010), "C, N and O abundances in red clump stars of the Milky Way", Monthly Notices of the Royal Astronomical Society, 409 (3): 1213–1219, arXiv: 1007.4064, Bibcode: 2010MNRAS.409.1213T, doi: 10.1111/j.1365-2966.2010.17381.x, S2CID  119182458.
  4. ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode: 1989ApJS...71..245K, doi: 10.1086/191373.
  5. ^ a b c d e f g h Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466, Bibcode: 2015AJ....150...88L, doi: 10.1088/0004-6256/150/3/88, S2CID  118505114.
  6. ^ a b Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode: 2008AJ....135..209M, doi: 10.1088/0004-6256/135/1/209.
  7. ^ Feuillet, Diane K.; et al. (2016), "Determining Ages of APOGEE Giants with Known Distances", The Astrophysical Journal, 817 (1): 40, arXiv: 1511.04088, Bibcode: 2016ApJ...817...40F, doi: 10.3847/0004-637X/817/1/40, S2CID  118675933.
  8. ^ De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv: astro-ph/0010273, Bibcode: 2000A&A...363..239D.
  9. ^ "3 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 12, 2018.
  10. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID  14878976.
  11. ^ Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv: 1606.08053, Bibcode: 2006AstL...32..759G, doi: 10.1134/S1063773706110065, S2CID  119231169.
  12. ^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal, 129 (3): 1483–1522, arXiv: astro-ph/0412070, Bibcode: 2005AJ....129.1483L, doi: 10.1086/427854, S2CID  2603568.
Retrieved from " https://en.wikipedia.org/?title=3_Andromedae&oldid=1228390380"
From Wikipedia, the free encyclopedia
Not to be confused with Andromeda III.
3 Andromedae
Diagram showing star positions and boundaries of the Andromeda constellation and its surroundings
3 Andromedae (circled) in a close northerly run-of-stars asterism – 5, 7, 8, 11 being close by, south-westward.
Observation data
Epoch J2000       Equinox J2000
Constellation Andromeda
Right ascension 23h 04m 10.98269s [1]
Declination +50° 03′ 07.5255″ [1]
Apparent magnitude (V) 4.64 [2]
Characteristics
Evolutionary stage giant [3]
Spectral type K0 IIIb [4]
B−V color index 1.058±0.003 [2]
Astrometry
Radial velocity (Rv)−34.87±0.12 [1] km/s
Proper motion (μ) RA: 165.837 [1]  mas/ yr [1]
Dec.: 167.716  mas/ yr [1]
Parallax (π)17.2629 ± 0.0918  mas [1]
Distance189 ± 1  ly
(57.9 ± 0.3  pc)
Absolute magnitude (MV)0.97 [2]
Details
Mass1.71 [5]  M☉
Radius10 [6]  R☉
Luminosity49 [5]  L☉
Surface gravity (log g)2.61±0.11 [7]  cgs
Temperature4,668±45 [5]  K
Metallicity [Fe/H]−0.08 [3]  dex
Rotational velocity (v sin i)1.0 [8] km/s
Age2.27 [5]  Gyr
Other designations
3 And, BD+49° 4028, HD 218031, HIP 113919, HR 8780, SAO 52649, PPM 41448, LTT 16772 [9]
Database references
SIMBAD data

3 Andromedae, abbreviated 3 And, is a single [10] star in the northern constellation of Andromeda. 3 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.64. [2] The distance to this star, as determined from an annual parallax shift of 17.3  mas, [1] is 181  light years. It is moving closer to the Earth with a heliocentric radial velocity of −35 km/s, [11] and has a relatively large proper motion, traversing the celestial sphere at 0.236 ″·yr−1. [12]

This is an evolved giant star with a stellar classification of K0 IIIb, [4] where the 'b' suffix indicated a lower luminosity giant. It is a red clump star, [3] which means it is generating energy through helium fusion at its core. This star has an estimated 1.7 [5] times the mass of the Sun (M☉), and, at the age of 2.3 [5] billion years, has expanded to 10 times the Sun's radius (R☉). [6] It is radiating 49 [5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,668 K. [5]

References

  1. ^ a b c d e f g 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. ^ a b c d 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.
  3. ^ a b c Tautvaišienė, G.; et al. (December 2010), "C, N and O abundances in red clump stars of the Milky Way", Monthly Notices of the Royal Astronomical Society, 409 (3): 1213–1219, arXiv: 1007.4064, Bibcode: 2010MNRAS.409.1213T, doi: 10.1111/j.1365-2966.2010.17381.x, S2CID  119182458.
  4. ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode: 1989ApJS...71..245K, doi: 10.1086/191373.
  5. ^ a b c d e f g h Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466, Bibcode: 2015AJ....150...88L, doi: 10.1088/0004-6256/150/3/88, S2CID  118505114.
  6. ^ a b Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode: 2008AJ....135..209M, doi: 10.1088/0004-6256/135/1/209.
  7. ^ Feuillet, Diane K.; et al. (2016), "Determining Ages of APOGEE Giants with Known Distances", The Astrophysical Journal, 817 (1): 40, arXiv: 1511.04088, Bibcode: 2016ApJ...817...40F, doi: 10.3847/0004-637X/817/1/40, S2CID  118675933.
  8. ^ De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv: astro-ph/0010273, Bibcode: 2000A&A...363..239D.
  9. ^ "3 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 12, 2018.
  10. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID  14878976.
  11. ^ Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv: 1606.08053, Bibcode: 2006AstL...32..759G, doi: 10.1134/S1063773706110065, S2CID  119231169.
  12. ^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal, 129 (3): 1483–1522, arXiv: astro-ph/0412070, Bibcode: 2005AJ....129.1483L, doi: 10.1086/427854, S2CID  2603568.
Retrieved from " https://en.wikipedia.org/?title=3_Andromedae&oldid=1228390380"

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