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11 Serpentis

October 20, 2023

This article is about A1 Serpentis. For other stars with this Bayer designation, see A Serpentis.

11 Serpentis is a single[9] star in the constellation of Serpens, located 271 light years away from the Sun. It has the Bayer designation A1 Serpentis,[10] 11 Serpentis is the Flamsteed designation. This object is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.497.[2] It is moving closer to the Earth with a heliocentric radial velocity of −16 km/s.[4]

11 Serpentis
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 15h 32m 57.93765s[1]
Declination −01° 11′ 11.0412″[1]
Apparent magnitude (V) 5.497[2]
Characteristics
Evolutionary stage horizontal branch[2]
Spectral type K0 III[3]
B−V color index 1.092[2]
Astrometry
Radial velocity (Rv)−16.1±2.8[4] km/s
Proper motion (μ) RA: −17.765[1] mas/yr
Dec.: −42.217[1] mas/yr
Parallax (π)12.0563 ± 0.1290 mas[1]
Distance271 ± 3 ly
(82.9 ± 0.9 pc)
Absolute magnitude (MV)0.83[5]
Details
Mass1.27±0.35[6] M☉
Radius11[7] R☉
Luminosity50[7] L☉
Surface gravity (log g)2.48±0.11[6] cgs
Temperature4,767±92[6] K
Metallicity [Fe/H]−0.13[7] dex
Age2.75+0.88
−0.66[6] Gyr
Other designations
A1 Ser, 11 Ser, BD−00°2982, FK5 3226, GC 20896, HD 138562, HIP 76133, HR 5772, SAO 140596[8]
Database references
SIMBADdata

This is an aging giant star with a stellar classification of K0 III,[3] a star that has used up its core hydrogen and has expanded. It is a red clump giant on the horizontal branch, which indicates it is generating energy through the fusion of helium at its core.[2] 11 Serpentis is 2.75 billion years old with 1.3[6] times the mass of the Sun and has 11[7] times the Sun's radius. It is radiating 50[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,767 K.[6]

References Edit

  1. ^ a b c d e 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 e Alves, David R. (August 2000), "K-Band Calibration of the Red Clump Luminosity", The Astrophysical Journal, 539 (2): 732–741, arXiv:astro-ph/0003329, Bibcode:2000ApJ...539..732A, doi:10.1086/309278, S2CID 16673121.
  3. ^ a b Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, Ann Arbor, Michigan: Department of Astronomy, University of Michigan, 5, Bibcode:1999MSS...C05....0H
  4. ^ 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.
  5. ^ 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.
  6. ^ a b c d e f 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.
  7. ^ a b c d e 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
  8. ^ "11 Ser". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-21.
  9. ^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976
  10. ^ Hoffleit, D. (July 1979), "Discordances in Star Designations", Bulletin d'Information du Centre de Données Stellaires, 17 (17): 38, Bibcode:1979BICDS..17...38H

October 20, 2023
serpentis, this, article, about, serpentis, other, stars, with, this, bayer, designation, serpentis, single, star, constellation, serpens, located, light, years, away, from, bayer, designation, serpentis, flamsteed, designation, this, object, visible, naked, f. This article is about A1 Serpentis For other stars with this Bayer designation see A Serpentis 11 Serpentis is a single 9 star in the constellation of Serpens located 271 light years away from the Sun It has the Bayer designation A1 Serpentis 10 11 Serpentis is the Flamsteed designation This object is visible to the naked eye as a faint orange hued star with an apparent visual magnitude of 5 497 2 It is moving closer to the Earth with a heliocentric radial velocity of 16 km s 4 11 Serpentis Observation dataEpoch J2000 Equinox J2000Constellation SerpensRight ascension 15h 32m 57 93765s 1 Declination 01 11 11 0412 1 Apparent magnitude V 5 497 2 CharacteristicsEvolutionary stage horizontal branch 2 Spectral type K0 III 3 B V color index 1 092 2 AstrometryRadial velocity Rv 16 1 2 8 4 km sProper motion m RA 17 765 1 mas yr Dec 42 217 1 mas yrParallax p 12 0563 0 1290 mas 1 Distance271 3 ly 82 9 0 9 pc Absolute magnitude MV 0 83 5 DetailsMass1 27 0 35 6 M Radius11 7 R Luminosity50 7 L Surface gravity log g 2 48 0 11 6 cgsTemperature4 767 92 6 KMetallicity Fe H 0 13 7 dexAge2 75 0 88 0 66 6 GyrOther designationsA1 Ser 11 Ser BD 00 2982 FK5 3226 GC 20896 HD 138562 HIP 76133 HR 5772 SAO 140596 8 Database referencesSIMBADdataThis is an aging giant star with a stellar classification of K0 III 3 a star that has used up its core hydrogen and has expanded It is a red clump giant on the horizontal branch which indicates it is generating energy through the fusion of helium at its core 2 11 Serpentis is 2 75 billion years old with 1 3 6 times the mass of the Sun and has 11 7 times the Sun s radius It is radiating 50 7 times the Sun s luminosity from its enlarged photosphere at an effective temperature of 4 767 K 6 References Edit a b c d e Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b c d e Alves David R August 2000 K Band Calibration of the Red Clump Luminosity The Astrophysical Journal 539 2 732 741 arXiv astro ph 0003329 Bibcode 2000ApJ 539 732A doi 10 1086 309278 S2CID 16673121 a b Houk N Swift C 1999 Michigan catalogue of two dimensional spectral types for the HD Stars Michigan Spectral Survey Ann Arbor Michigan Department of Astronomy University of Michigan 5 Bibcode 1999MSS C05 0H a b de Bruijne J H J Eilers A C October 2012 Radial velocities for the HIPPARCOS Gaia Hundred Thousand Proper Motion project Astronomy amp Astrophysics 546 14 arXiv 1208 3048 Bibcode 2012A amp 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 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 a b c d e 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 Ser SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2019 03 21 Eggleton P P Tokovinin A A 2008 A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869 879 arXiv 0806 2878 Bibcode 2008MNRAS 389 869E doi 10 1111 j 1365 2966 2008 13596 x S2CID 14878976 Hoffleit D July 1979 Discordances in Star Designations Bulletin d Information du Centre de Donnees Stellaires 17 17 38 Bibcode 1979BICDS 17 38H Retrieved from https en wikipedia org w index php title 11 Serpentis amp oldid 1154724486, wikipedia, wiki, book, books, library,

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