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35 Pegasi
Location of 35 Pegasi (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Pegasus
Right ascension 22h 27m 51.52233s [1]
Declination 4° 41′ 44.3916″ [1]
Apparent magnitude (V) 4.80 [2]
Characteristics
Evolutionary stage horizontal branch
Spectral type K0III [3]
U−B color index +0.88 [2]
B−V color index +1.06 [2]
Astrometry
Radial velocity (Rv)+54.16 [4] km/s
Proper motion (μ) RA: +77.57 [5]  mas/ yr
Dec.: −306.12 [5]  mas/ yr
Parallax (π)21.0039 ± 0.2419  mas [1]
Distance155 ± 2  ly
(47.6 ± 0.5  pc)
Absolute magnitude (MV)1.50 [6]
Details
Mass1.18 [6]  M☉
Radius8.5 [7]  R☉
Luminosity31.69 [8]  L☉
Surface gravity (log g)2.76 [9]  cgs
Temperature4,676 [9]  K
Metallicity [Fe/H]−0.28 [9]  dex
Rotational velocity (v sin i)1.5 [10] km/s
Age4.94 [11]  Gyr
Other designations
35 Peg, BD+03°4710, FK5 3796, GC 31377, HD 212943, HIP 110882, HR 8551, SAO 127540, CCDM J22278+0441A, WDS J22279+0442A, LTT 16582 [12]
Database references
SIMBAD data

35 Pegasi is a single [13] star in the northern constellation of Pegasus. It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.80. [2] The star is located approximately 155  light years away from the Sun based on parallax, [5] and is drifting further away with a radial velocity of +54 km/s. [4] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.318  arc seconds per annum. [14]

This is an aging giant star [15] with a stellar classification of K0III, [3] having exhausted the hydrogen at its core and expanded to 8.5 [7] times the Sun's radius. It is a red clump giant, indicating it is on the horizontal branch and is generating energy through helium fusion at its core. [15] The star is five [11] billion years old with 1.2 [6] times the mass of the Sun. It is radiating 32 [8] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,676 K. [9]

There are two distant visual companions: component B, at an angular separation of 80.5 ″ and magnitude 10.0, and C, at separation 176.3″ and magnitude 10.64. [16]

References

  1. ^ a b c 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. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode: 2002yCat.2237....0D.
  3. ^ a b Frasca, A.; et al. (December 2009). "REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion. Rotation periods and starspot parameters". Astronomy and Astrophysics. 508 (3): 1313–1330. arXiv: 0911.0760. Bibcode: 2009A&A...508.1313F. doi: 10.1051/0004-6361/200913327. S2CID  118361131.
  4. ^ a b Famaey, B.; et al. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics. 430: 165–186. arXiv: astro-ph/0409579. Bibcode: 2005A&A...430..165F. doi: 10.1051/0004-6361:20041272. S2CID  17804304.
  5. ^ a b c 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. Vizier catalog entry
  6. ^ a b c Da Silva, Ronaldo; et al. (2015). "Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets". Astronomy & Astrophysics. 580: A24. arXiv: 1505.01726. Bibcode: 2015A&A...580A..24D. doi: 10.1051/0004-6361/201525770. S2CID  119216425. Vizier catalog entry
  7. ^ a b Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv: astro-ph/9911002. Bibcode: 1999A&A...352..555A. Vizier catalog entry
  8. ^ a b 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. Vizier catalog entry
  9. ^ a b c d Wu, Yue; et al. (2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. arXiv: 1009.1491. Bibcode: 2011A&A...525A..71W. doi: 10.1051/0004-6361/201015014. S2CID  53480665.
  10. ^ 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.
  11. ^ a b 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.
  12. ^ "35 Peg". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-01.
  13. ^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv: 0806.2878. Bibcode: 2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x. S2CID  14878976.
  14. ^ 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.
  15. ^ a b 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.
  16. ^ Mason, Brian D.; et al. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode: 2001AJ....122.3466M. doi: 10.1086/323920. Vizier catalog entry
Retrieved from " https://en.wikipedia.org/?title=35_Pegasi&oldid=1167471867"
From Wikipedia, the free encyclopedia
35 Pegasi
Location of 35 Pegasi (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Pegasus
Right ascension 22h 27m 51.52233s [1]
Declination 4° 41′ 44.3916″ [1]
Apparent magnitude (V) 4.80 [2]
Characteristics
Evolutionary stage horizontal branch
Spectral type K0III [3]
U−B color index +0.88 [2]
B−V color index +1.06 [2]
Astrometry
Radial velocity (Rv)+54.16 [4] km/s
Proper motion (μ) RA: +77.57 [5]  mas/ yr
Dec.: −306.12 [5]  mas/ yr
Parallax (π)21.0039 ± 0.2419  mas [1]
Distance155 ± 2  ly
(47.6 ± 0.5  pc)
Absolute magnitude (MV)1.50 [6]
Details
Mass1.18 [6]  M☉
Radius8.5 [7]  R☉
Luminosity31.69 [8]  L☉
Surface gravity (log g)2.76 [9]  cgs
Temperature4,676 [9]  K
Metallicity [Fe/H]−0.28 [9]  dex
Rotational velocity (v sin i)1.5 [10] km/s
Age4.94 [11]  Gyr
Other designations
35 Peg, BD+03°4710, FK5 3796, GC 31377, HD 212943, HIP 110882, HR 8551, SAO 127540, CCDM J22278+0441A, WDS J22279+0442A, LTT 16582 [12]
Database references
SIMBAD data

35 Pegasi is a single [13] star in the northern constellation of Pegasus. It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.80. [2] The star is located approximately 155  light years away from the Sun based on parallax, [5] and is drifting further away with a radial velocity of +54 km/s. [4] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.318  arc seconds per annum. [14]

This is an aging giant star [15] with a stellar classification of K0III, [3] having exhausted the hydrogen at its core and expanded to 8.5 [7] times the Sun's radius. It is a red clump giant, indicating it is on the horizontal branch and is generating energy through helium fusion at its core. [15] The star is five [11] billion years old with 1.2 [6] times the mass of the Sun. It is radiating 32 [8] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,676 K. [9]

There are two distant visual companions: component B, at an angular separation of 80.5 ″ and magnitude 10.0, and C, at separation 176.3″ and magnitude 10.64. [16]

References

  1. ^ a b c 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. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode: 2002yCat.2237....0D.
  3. ^ a b Frasca, A.; et al. (December 2009). "REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion. Rotation periods and starspot parameters". Astronomy and Astrophysics. 508 (3): 1313–1330. arXiv: 0911.0760. Bibcode: 2009A&A...508.1313F. doi: 10.1051/0004-6361/200913327. S2CID  118361131.
  4. ^ a b Famaey, B.; et al. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics. 430: 165–186. arXiv: astro-ph/0409579. Bibcode: 2005A&A...430..165F. doi: 10.1051/0004-6361:20041272. S2CID  17804304.
  5. ^ a b c 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. Vizier catalog entry
  6. ^ a b c Da Silva, Ronaldo; et al. (2015). "Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets". Astronomy & Astrophysics. 580: A24. arXiv: 1505.01726. Bibcode: 2015A&A...580A..24D. doi: 10.1051/0004-6361/201525770. S2CID  119216425. Vizier catalog entry
  7. ^ a b Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv: astro-ph/9911002. Bibcode: 1999A&A...352..555A. Vizier catalog entry
  8. ^ a b 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. Vizier catalog entry
  9. ^ a b c d Wu, Yue; et al. (2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. arXiv: 1009.1491. Bibcode: 2011A&A...525A..71W. doi: 10.1051/0004-6361/201015014. S2CID  53480665.
  10. ^ 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.
  11. ^ a b 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.
  12. ^ "35 Peg". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-01.
  13. ^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv: 0806.2878. Bibcode: 2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x. S2CID  14878976.
  14. ^ 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.
  15. ^ a b 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.
  16. ^ Mason, Brian D.; et al. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode: 2001AJ....122.3466M. doi: 10.1086/323920. Vizier catalog entry
Retrieved from " https://en.wikipedia.org/?title=35_Pegasi&oldid=1167471867"

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