fbpx
Wikipedia

Sigma Aurigae

January 01, 1970

Sigma Aurigae, Latinized from σ Aurigae, is a giant star in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of 4.99.[2] With an annual parallax shift of 6.21 mas,[5] it is approximately 530 light-years (160 parsecs) distant from the Earth. This is an evolved giant star with a stellar classification of K4 III.[3]

σ Aurigae
Location of σ Aurigae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 24m 39.14142s[1]
Declination +37° 23′ 07.2589″[1]
Apparent magnitude (V) 4.99[2]
Characteristics
Spectral type K4 III[3]
U−B color index +1.75[2]
B−V color index +1.42[2]
Astrometry
Radial velocity (Rv)–19.7[4] km/s
Proper motion (μ) RA: +0.71[5] mas/yr
Dec.: –11.51[5] mas/yr
Parallax (π)6.2101 ± 0.2221 mas[1]
Distance530 ± 20 ly
(161 ± 6 pc)
Absolute magnitude (MV)−0.75[6]
Details
Radius43.72+1.08
−3.24[1] R☉
Luminosity496±20[1] L☉
Surface gravity (log g)1.75[7] cgs
Temperature4,120+162
−50[1] K
Metallicity [Fe/H]–0.03[7] dex
Rotational velocity (v sin i)10[8] km/s
Other designations
σ Aur, 21 Aurigae, BD+37°1175, HD 35186, HIP 25292, HR 1773, SAO 57981[9]
Database references
SIMBADdata

Sigma Aurigae has a 12th magnitude companion at an angular separation of 8 arcseconds, as well as two fainter companions at 28 and 35" respectively.[10] All are background objects, stars much further away than Sigma itself.

Sigma Aurigae, along with λ Aur and μ Aur, were Kazwini's Al Ḣibāʽ (ألحباع), the Tent.[11] According to the catalogue of stars in the Technical Memorandum 33-507 – A Reduced Star Catalog Containing 537 Named Stars, Al Ḣibāʽ were the title for three stars: λ Aur as Al Ḣibāʽ I, μ Aur as Al Ḣibāʽ II and σ Aur as Al Ḣibāʽ III.[12]

References edit

  1. ^ a b c d e f 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 Argue, A. N. (1966), "UBV photometry of 550 F, G and K type stars", Monthly Notices of the Royal Astronomical Society, 133 (4): 475–493, Bibcode:1966MNRAS.133..475A, doi:10.1093/mnras/133.4.475.
  3. ^ a b Roman, Nancy G. (July 1952), "The Spectra of the Bright Stars of Types F5-K5", Astrophysical Journal, 116: 122, Bibcode:1952ApJ...116..122R, doi:10.1086/145598.
  4. ^ Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430 (1): 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, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752v1, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600. Note: see VizieR catalogue I/311.
  6. ^ 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.
  7. ^ a b McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527.
  8. ^ Bernacca, P. L.; Perinotto, M. (1970), "A catalogue of stellar rotational velocities", Contributi Osservatorio Astronomico di Padova in Asiago, 239 (1): 1, Bibcode:1970CoAsi.239....1B.
  9. ^ "sig Aur -- Star in double system", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-22.
  10. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (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.
  11. ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York, NY: Dover Publications Inc. p. 91. ISBN 0-486-21079-0. Retrieved 2010-12-12.
  12. ^ Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), California Institute of Technology: Jet Propulsion Laboratory, retrieved 2012-08-19.

External links edit

  • HR 1773
  • CCDM J05247+3723
  • Image Sigma Aurigae

January 01, 1970
sigma, aurigae, latinized, from, aurigae, giant, star, northern, constellation, auriga, faintly, visible, naked, with, apparent, visual, magnitude, with, annual, parallax, shift, approximately, light, years, parsecs, distant, from, earth, this, evolved, giant,. Sigma Aurigae Latinized from s Aurigae is a giant star in the northern constellation of Auriga It is faintly visible to the naked eye with an apparent visual magnitude of 4 99 2 With an annual parallax shift of 6 21 mas 5 it is approximately 530 light years 160 parsecs distant from the Earth This is an evolved giant star with a stellar classification of K4 III 3 s AurigaeLocation of s Aurigae circled Observation dataEpoch J2000 Equinox J2000 Constellation Auriga Right ascension 05h 24m 39 14142s 1 Declination 37 23 07 2589 1 Apparent magnitude V 4 99 2 Characteristics Spectral type K4 III 3 U B color index 1 75 2 B V color index 1 42 2 AstrometryRadial velocity Rv 19 7 4 km sProper motion m RA 0 71 5 mas yr Dec 11 51 5 mas yrParallax p 6 2101 0 2221 mas 1 Distance530 20 ly 161 6 pc Absolute magnitude MV 0 75 6 DetailsRadius43 72 1 08 3 24 1 R Luminosity496 20 1 L Surface gravity log g 1 75 7 cgsTemperature4 120 162 50 1 KMetallicity Fe H 0 03 7 dexRotational velocity v sin i 10 8 km s Other designationss Aur 21 Aurigae BD 37 1175 HD 35186 HIP 25292 HR 1773 SAO 57981 9 Database referencesSIMBADdata Sigma Aurigae has a 12th magnitude companion at an angular separation of 8 arcseconds as well as two fainter companions at 28 and 35 respectively 10 All are background objects stars much further away than Sigma itself Sigma Aurigae along with l Aur and m Aur were Kazwini s Al Ḣibaʽ ألحباع the Tent 11 According to the catalogue of stars in the Technical Memorandum 33 507 A Reduced Star Catalog Containing 537 Named Stars Al Ḣibaʽ were the title for three stars l Aur as Al Ḣibaʽ I m Aur as Al Ḣibaʽ II and s Aur as Al Ḣibaʽ III 12 References edit a b c d e f 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 Argue A N 1966 UBV photometry of 550 F G and K type stars Monthly Notices of the Royal Astronomical Society 133 4 475 493 Bibcode 1966MNRAS 133 475A doi 10 1093 mnras 133 4 475 a b Roman Nancy G July 1952 The Spectra of the Bright Stars of Types F5 K5 Astrophysical Journal 116 122 Bibcode 1952ApJ 116 122R doi 10 1086 145598 Famaey B et al January 2005 Local kinematics of K and M giants from CORAVEL Hipparcos Tycho 2 data Revisiting the concept of superclusters Astronomy and Astrophysics 430 1 165 186 arXiv astro ph 0409579 Bibcode 2005A amp A 430 165F doi 10 1051 0004 6361 20041272 S2CID 17804304 a b c van Leeuwen Floor November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752v1 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 Note see VizieR catalogue I 311 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 McWilliam Andrew December 1990 High resolution spectroscopic survey of 671 GK giants I Stellar atmosphere parameters and abundances Astrophysical Journal Supplement Series 74 1075 1128 Bibcode 1990ApJS 74 1075M doi 10 1086 191527 Bernacca P L Perinotto M 1970 A catalogue of stellar rotational velocities Contributi Osservatorio Astronomico di Padova in Asiago 239 1 1 Bibcode 1970CoAsi 239 1B sig Aur Star in double system SIMBAD Astronomical Database Centre de Donnees astronomiques de Strasbourg retrieved 2012 08 22 Mason Brian D Wycoff Gary L Hartkopf William I Douglass Geoffrey G Worley Charles E 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 Allen R H 1963 Star Names Their Lore and Meaning Reprint ed New York NY Dover Publications Inc p 91 ISBN 0 486 21079 0 Retrieved 2010 12 12 Rhoads Jack W November 15 1971 Technical Memorandum 33 507 A Reduced Star Catalog Containing 537 Named Stars PDF California Institute of Technology Jet Propulsion Laboratory retrieved 2012 08 19 External links editHR 1773 CCDM J05247 3723 Image Sigma Aurigae Retrieved from https en wikipedia org w index php title Sigma Aurigae amp oldid 1169989887, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.