fbpx
Wikipedia

Beta Crateris

October 20, 2023

Beta Crateris, Latinized from β Crateris, is a binary star[3] system in the southern constellation of Crater. It is visible to the naked eye with an apparent visual magnitude of 4.46.[2] Based upon an annual parallax shift of 9.59 mas as seen from Earth, it is located around 340 light years from the Sun.

β Crateris
Location of β Crateris (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Crater
Right ascension 11h 11m 39.48783s[1]
Declination −22° 49′ 33.0593″[1]
Apparent magnitude (V) 4.46[2] (4.61 + 13.40)[3]
Characteristics
Spectral type A2 III[3] + DA1.4[3]
U−B color index +0.05[2]
B−V color index +0.02[2]
Astrometry
Radial velocity (Rv)+5.6±0.5[4] km/s
Proper motion (μ) RA: + 5.220 ± 0.546[5] mas/yr
Dec.: −103.457 ± 0.483[5] mas/yr
Parallax (π)11.0358 ± 0.2918 mas[5]
Distance296 ± 8 ly
(91 ± 2 pc)
Absolute magnitude (MV)−0.62[6] + 8.19[3]
Details
Luminosity147[7] L☉
Surface gravity (log g)3.5[8] cgs
Temperature8,830[7] K
Rotational velocity (v sin i)49[9] km/s
β Crt B
Mass0.43[10] M☉
Radius0.027[3] R☉
Surface gravity (log g)7.40[11] cgs
Temperature36,885[11] K
Other designations
β Crt, 11 Crateris, BD−22° 3095, FK5 421, HD 97277, HIP 54682, HR 4343, SAO 179624, WD 1109-225.[12]
Database references
SIMBADdata

This is an astrometric binary[13] star system with an orbital period of 6.0 years and a projected separation of 8.3 AU. The orbit has an estimated semimajor axis of 9.3 AU.[3] The primary, component A, is listed as an A-type giant star with a stellar classification of A2 III.[3][13][10] However, Houk and Smith-Moore (1988) give a main sequence classification of A1 V,[14] while Abt and Morrell (1995) list it as a subgiant star with a class of A2 IV.[15] The spectrum shows enhanced barium, possibly as a result of a previous mass transfer event.[8]

The companion, component B, is a white dwarf[10] of class DA with an effective temperature of 36,885 K that has been cooling down for around four million years.[11] It has an unusually low mass, 43% that of the Sun, suggesting that the white dwarf progenitor may have transferred matter to its companion. Alternative scenarios require either the evolution of a triple star system, or a binary system with highly eccentric orbit resulting in grazing interactions.[3] The dwarf is a source of X-ray emission.[16]

Name Edit

This star was one of the set assigned by the 16th century astronomer Al Tizini[17] to Al Sharāsīf (ألشراسيف), the Ribs (of Hydra), which included the stars from β Crateris westward through κ Hydrae.[18][19]

According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Sharāsīf were the title for two stars : β Crateris as Al Sharasīf II and κ Hydrae as Al Sharasīf I.[20]

In Chinese, 翼宿 (Yì Sù), meaning Wings (asterism), refers to an asterism consisting of β Crateris, α Crateris, γ Crateris, ζ Crateris, λ Crateris, ν Hydrae, η Crateris, δ Crateris, ι Crateris, κ Crateris, ε Crateris, HD 95808, HD 93833, θ Crateris, HD 102574, HD 100219, HD 99922, HD 100307, HD 96819, χ1 Hydrae, HD 102620 and HD 103462.[21] Consequently, β Crateris itself is known as 翼宿十六 (Yì Sù shíliù, English: the Sixteenth Star of Wings.)[22][23]

References Edit

  1. ^ a b 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.
  2. ^ a b c d Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
  3. ^ a b c d e f g h i Holberg, J. B.; et al. (2013), "Where are all the Sirius-like binary systems?", Monthly Notices of the Royal Astronomical Society, 435 (3): 2077, arXiv:1307.8047, Bibcode:2013MNRAS.435.2077H, doi:10.1093/mnras/stt1433.
  4. ^ 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. ^ 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.
  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 McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  8. ^ a b Smalley, B.; et al. (January 1997), "The chemical composition and binarity of beta Crateris", Monthly Notices of the Royal Astronomical Society, 284 (2): 457–464, Bibcode:1997MNRAS.284..457S, doi:10.1093/mnras/284.2.457.
  9. ^ Royer, F.; et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298.
  10. ^ a b c Burleigh, M. R.; et al. (November 2001), "The low-mass white dwarf companion to β Crateris", Monthly Notices of the Royal Astronomical Society, 327 (4): 1158–1164, arXiv:astro-ph/0106463, Bibcode:2001MNRAS.327.1158B, doi:10.1046/j.1365-8711.2001.04818.x, S2CID 9031525.
  11. ^ a b c Barstow, M. A.; et al. (May 2014), "Evidence for an external origin of heavy elements in hot DA white dwarfs", Monthly Notices of the Royal Astronomical Society, 440 (2): 1607–1625, arXiv:1402.2164, Bibcode:2014MNRAS.440.1607B, doi:10.1093/mnras/stu216.
  12. ^ "bet Crt". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-03-02.{{cite web}}: CS1 maint: postscript (link)
  13. ^ a b 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.
  14. ^ Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
  15. ^ Abt, Helmut A.; Morrell, Nidia I. (1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode:1995ApJS...99..135A, doi:10.1086/192182.
  16. ^ Schröder, C.; Schmitt, J. H. M. M. (November 2007), "X-ray emission from A-type stars", Astronomy and Astrophysics, 475 (2): 677–684, Bibcode:2007A&A...475..677S, doi:10.1051/0004-6361:20077429.
  17. ^ Rim Turkmani (7 July 2011). "Arabic Roots of the Scientific Revolution". Muslim Heritage. Retrieved 1 July 2016.
  18. ^ Star Names - R.H.Allen p. 182
  19. ^ Star Names - R.H.Allen p. 246
  20. ^ Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), Jet Propulsion Laboratory, California Institute of Technology.
  21. ^ (in Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  22. ^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 31 日
  23. ^ (in Chinese)

External links Edit

  • Kaler, James B. (May 22, 2015), "Beta Crateris", Stars, University of Illinois, retrieved 2017-03-03.

October 20, 2023
beta, crateris, latinized, from, crateris, binary, star, system, southern, constellation, crater, visible, naked, with, apparent, visual, magnitude, based, upon, annual, parallax, shift, seen, from, earth, located, around, light, years, from, craterislocation,. Beta Crateris Latinized from b Crateris is a binary star 3 system in the southern constellation of Crater It is visible to the naked eye with an apparent visual magnitude of 4 46 2 Based upon an annual parallax shift of 9 59 mas as seen from Earth it is located around 340 light years from the Sun b CraterisLocation of b Crateris circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation CraterRight ascension 11h 11m 39 48783s 1 Declination 22 49 33 0593 1 Apparent magnitude V 4 46 2 4 61 13 40 3 CharacteristicsSpectral type A2 III 3 DA1 4 3 U B color index 0 05 2 B V color index 0 02 2 AstrometryRadial velocity Rv 5 6 0 5 4 km sProper motion m RA 5 220 0 546 5 mas yr Dec 103 457 0 483 5 mas yrParallax p 11 0358 0 2918 mas 5 Distance296 8 ly 91 2 pc Absolute magnitude MV 0 62 6 8 19 3 DetailsLuminosity147 7 L Surface gravity log g 3 5 8 cgsTemperature8 830 7 KRotational velocity v sin i 49 9 km sb Crt BMass0 43 10 M Radius0 027 3 R Surface gravity log g 7 40 11 cgsTemperature36 885 11 KOther designationsb Crt 11 Crateris BD 22 3095 FK5 421 HD 97277 HIP 54682 HR 4343 SAO 179624 WD 1109 225 12 Database referencesSIMBADdataThis is an astrometric binary 13 star system with an orbital period of 6 0 years and a projected separation of 8 3 AU The orbit has an estimated semimajor axis of 9 3 AU 3 The primary component A is listed as an A type giant star with a stellar classification of A2 III 3 13 10 However Houk and Smith Moore 1988 give a main sequence classification of A1 V 14 while Abt and Morrell 1995 list it as a subgiant star with a class of A2 IV 15 The spectrum shows enhanced barium possibly as a result of a previous mass transfer event 8 The companion component B is a white dwarf 10 of class DA with an effective temperature of 36 885 K that has been cooling down for around four million years 11 It has an unusually low mass 43 that of the Sun suggesting that the white dwarf progenitor may have transferred matter to its companion Alternative scenarios require either the evolution of a triple star system or a binary system with highly eccentric orbit resulting in grazing interactions 3 The dwarf is a source of X ray emission 16 Name EditThis star was one of the set assigned by the 16th century astronomer Al Tizini 17 to Al Sharasif ألشراسيف the Ribs of Hydra which included the stars from b Crateris westward through k Hydrae 18 19 According to the catalogue of stars in the Technical Memorandum 33 507 A Reduced Star Catalog Containing 537 Named Stars Al Sharasif were the title for two stars b Crateris as Al Sharasif II and k Hydrae as Al Sharasif I 20 In Chinese 翼宿 Yi Su meaning Wings asterism refers to an asterism consisting of b Crateris a Crateris g Crateris z Crateris l Crateris n Hydrae h Crateris d Crateris i Crateris k Crateris e Crateris HD 95808 HD 93833 8 Crateris HD 102574 HD 100219 HD 99922 HD 100307 HD 96819 x1 Hydrae HD 102620 and HD 103462 21 Consequently b Crateris itself is known as 翼宿十六 Yi Su shiliu English the Sixteenth Star of Wings 22 23 References Edit a b van Leeuwen F 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 a b c d Mermilliod J C 1986 Compilation of Eggen s UBV data transformed to UBV unpublished Catalogue of Eggen s UBV Data SIMBAD Bibcode 1986EgUBV 0M a b c d e f g h i Holberg J B et al 2013 Where are all the Sirius like binary systems Monthly Notices of the Royal Astronomical Society 435 3 2077 arXiv 1307 8047 Bibcode 2013MNRAS 435 2077H doi 10 1093 mnras stt1433 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 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 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 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 McDonald I et al 2012 Fundamental Parameters and Infrared Excesses of Hipparcos Stars Monthly Notices of the Royal Astronomical Society 427 1 343 57 arXiv 1208 2037 Bibcode 2012MNRAS 427 343M doi 10 1111 j 1365 2966 2012 21873 x S2CID 118665352 a b Smalley B et al January 1997 The chemical composition and binarity of beta Crateris Monthly Notices of the Royal Astronomical Society 284 2 457 464 Bibcode 1997MNRAS 284 457S doi 10 1093 mnras 284 2 457 Royer F et al February 2007 Rotational velocities of A type stars III Velocity distributions Astronomy and Astrophysics 463 2 671 682 arXiv astro ph 0610785 Bibcode 2007A amp A 463 671R doi 10 1051 0004 6361 20065224 S2CID 18475298 a b c Burleigh M R et al November 2001 The low mass white dwarf companion to b Crateris Monthly Notices of the Royal Astronomical Society 327 4 1158 1164 arXiv astro ph 0106463 Bibcode 2001MNRAS 327 1158B doi 10 1046 j 1365 8711 2001 04818 x S2CID 9031525 a b c Barstow M A et al May 2014 Evidence for an external origin of heavy elements in hot DA white dwarfs Monthly Notices of the Royal Astronomical Society 440 2 1607 1625 arXiv 1402 2164 Bibcode 2014MNRAS 440 1607B doi 10 1093 mnras stu216 bet Crt SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2017 03 02 a href Template Cite web html title Template Cite web cite web a CS1 maint postscript link a b 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 Houk Nancy Smith Moore M 1978 Michigan catalogue of two dimensional spectral types for the HD stars vol 4 Ann Arbor Dept of Astronomy University of Michigan Bibcode 1988mcts book H Abt Helmut A Morrell Nidia I 1995 The Relation between Rotational Velocities and Spectral Peculiarities among A Type Stars Astrophysical Journal Supplement 99 135 Bibcode 1995ApJS 99 135A doi 10 1086 192182 Schroder C Schmitt J H M M November 2007 X ray emission from A type stars Astronomy and Astrophysics 475 2 677 684 Bibcode 2007A amp A 475 677S doi 10 1051 0004 6361 20077429 Rim Turkmani 7 July 2011 Arabic Roots of the Scientific Revolution Muslim Heritage Retrieved 1 July 2016 Star Names R H Allen p 182 Star Names R H Allen p 246 Rhoads Jack W November 15 1971 Technical Memorandum 33 507 A Reduced Star Catalog Containing 537 Named Stars PDF Jet Propulsion Laboratory California Institute of Technology in Chinese 中國星座神話 written by 陳久金 Published by 台灣書房出版有限公司 2005 ISBN 978 986 7332 25 7 in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 5 月 31 日 in Chinese 夢之大地 國立成功大學 WebBBS DreamLand National Cheng Kung University WebBBS SystemExternal links EditKaler James B May 22 2015 Beta Crateris Stars University of Illinois retrieved 2017 03 03 Retrieved from https en wikipedia org w index php title Beta Crateris amp oldid 1170002470, 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.