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Zeta Chamaeleontis

January 01, 1970

Not to be confused with Z Chamaeleontis.

Zeta Chamaeleontis, Latinized from ζ Chamaeleontis, is a star located in the constellation Chamaeleon. Located around 540 light-years distant, it shines with a luminosity approximately 522 times that of the Sun and has a surface temperature of 15,655 K.

ζ Chamaeleontis
Location of ζ Chamaeleontis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Chamaeleon
Right ascension 09h 33m 53.37537s[1]
Declination −80° 56′ 28.5287″[1]
Apparent magnitude (V) 5.07[2] (5.06 - 5.17)[3]
Characteristics
Spectral type B5V[2]
Variable type eclipsing[4]+ELL[5]
Astrometry
Radial velocity (Rv)−42.0±4.2 km/s
Proper motion (μ) RA: −34.582[1] mas/yr
Dec.: +13.564[1] mas/yr
Parallax (π)6.0043 ± 0.1134 mas[1]
Distance540 ± 10 ly
(167 ± 3 pc)
Absolute magnitude (MV)−1.15[2]
Details
Mass3.12[6] M☉
Radius4.75[7] R☉
Luminosity522[8] L☉
Surface gravity (log g)3.55[6] cgs
Temperature15,655[9] K
Metallicity [Fe/H]−0.31[6] dex
Rotational velocity (v sin i)103[10] km/s
Age184[11] Myr
Other designations
CPD−80°365, HD 83979, HIP 46928, HR 3860, SAO 258538
Database references
SIMBADdata
Light curve for Zeta Chamaeleontis, plotted from TESS data[12]

South African Astronomer A.W.J. Cousins noted ζ Cha to vary between magnitudes 5.06 and 5.17 in 1960.[13] It was classified as a Beta Cephei variable in the Hipparcos and Tycho Catalogues (ESA 1997), with a period of 1.07 days,[14] before being reclassified as a slowly pulsating B star in the 2011 version.[15] It is now known to be an eclipsing binary star, with a period of 2.7 days,[4] with continuous variation through the whole cycle due to the ellipsoidal shape of the component stars.[5]

It is a B5V main sequence star with an effective temperature of 15,655 K, an absolute magnitude of −1.15 and a mass of 3.1 solar masses, although the properties are evaluated treating the system as a single star.

References edit

  1. ^ a b c d e 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 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. ^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
  4. ^ a b IJspeert, L. W.; Tkachenko, A.; Johnston, C.; Garcia, S.; De Ridder, J.; Van Reeth, T.; Aerts, C. (August 2021). "An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries observed by TESS". Astronomy & Astrophysics. 652: A120. arXiv:2107.10005. Bibcode:2021A&A...652A.120I. doi:10.1051/0004-6361/202141489.
  5. ^ a b "Zeta Cha". International Variable Star Index. AAVSO. Retrieved 2023-07-27.
  6. ^ a b c Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. S2CID 131780028.
  7. ^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. S2CID 237605138.
  8. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (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.
  9. ^ Cardiel, Nicolás; Zamorano, Jaime; Bará, Salvador; Sánchez De Miguel, Alejandro; Cabello, Cristina; Gallego, Jesús; García, Lucía; González, Rafael; Izquierdo, Jaime; Pascual, Sergio; Robles, José; Sánchez, Ainhoa; Tapia, Carlos (2021). "Synthetic RGB photometry of bright stars: Definition of the standard photometric system and UCM library of spectrophotometric spectra". Monthly Notices of the Royal Astronomical Society. 504 (3): 3730. arXiv:2103.17009. Bibcode:2021MNRAS.504.3730C. doi:10.1093/mnras/stab997.
  10. ^ Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog: III/244. Originally Published in: 2005csss...13..571G; 2005yCat.3244....0G. 3244. Bibcode:2005yCat.3244....0G.
  11. ^ Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. ISSN 0320-0108. S2CID 255201789.
  12. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 25 September 2022.
  13. ^ Cousins, A.W.J. (1960). "New Bright Variable Stars". Monthly Notes of the Astronomical Society of Southern Africa. 19: 56. Bibcode:1960MNSSA..19...56C.
  14. ^ ESA (1997). The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission. Vol. 1200. Bibcode:1997ESASP1200.....E. ISBN 9290923997. {{cite book}}: |journal= ignored (help)
  15. ^ Dubath, P.; Rimoldini, L.; Süveges, M.; Blomme, J.; López, M.; Sarro, L. M.; De Ridder, J.; Cuypers, J.; Guy, L.; Lecoeur, I.; Nienartowicz, K.; Jan, A.; Beck, M.; Mowlavi, N.; De Cat, P.; Lebzelter, T.; Eyer, L. (2011). "Random forest automated supervised classification of Hipparcos periodic variable stars". Monthly Notices of the Royal Astronomical Society. 414 (3): 2602–17. arXiv:1101.2406. Bibcode:2011MNRAS.414.2602D. doi:10.1111/j.1365-2966.2011.18575.x. S2CID 118560311.

January 01, 1970
zeta, chamaeleontis, confused, with, chamaeleontis, latinized, from, chamaeleontis, star, located, constellation, chamaeleon, located, around, light, years, distant, shines, with, luminosity, approximately, times, that, surface, temperature, chamaeleontislocat. Not to be confused with Z Chamaeleontis Zeta Chamaeleontis Latinized from z Chamaeleontis is a star located in the constellation Chamaeleon Located around 540 light years distant it shines with a luminosity approximately 522 times that of the Sun and has a surface temperature of 15 655 K z ChamaeleontisLocation of z Chamaeleontis circled Observation dataEpoch J2000 Equinox J2000 Constellation Chamaeleon Right ascension 09h 33m 53 37537s 1 Declination 80 56 28 5287 1 Apparent magnitude V 5 07 2 5 06 5 17 3 Characteristics Spectral type B5V 2 Variable type eclipsing 4 ELL 5 AstrometryRadial velocity Rv 42 0 4 2 km sProper motion m RA 34 582 1 mas yr Dec 13 564 1 mas yrParallax p 6 0043 0 1134 mas 1 Distance540 10 ly 167 3 pc Absolute magnitude MV 1 15 2 DetailsMass3 12 6 M Radius4 75 7 R Luminosity522 8 L Surface gravity log g 3 55 6 cgsTemperature15 655 9 KMetallicity Fe H 0 31 6 dexRotational velocity v sin i 103 10 km sAge184 11 Myr Other designationsCPD 80 365 HD 83979 HIP 46928 HR 3860 SAO 258538 Database referencesSIMBADdata Light curve for Zeta Chamaeleontis plotted from TESS data 12 South African Astronomer A W J Cousins noted z Cha to vary between magnitudes 5 06 and 5 17 in 1960 13 It was classified as a Beta Cephei variable in the Hipparcos and Tycho Catalogues ESA 1997 with a period of 1 07 days 14 before being reclassified as a slowly pulsating B star in the 2011 version 15 It is now known to be an eclipsing binary star with a period of 2 7 days 4 with continuous variation through the whole cycle due to the ellipsoidal shape of the component stars 5 It is a B5V main sequence star with an effective temperature of 15 655 K an absolute magnitude of 1 15 and a mass of 3 1 solar masses although the properties are evaluated treating the system as a single star References edit a b c d e 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 amp A 674A 1G doi 10 1051 0004 6361 202243940 S2CID 244398875 Gaia DR3 record for this source at VizieR a b c 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 Samus N N et al 2017 General Catalogue of Variable Stars Astronomy Reports 5 1 61 1 80 88 Bibcode 2017ARep 61 80S doi 10 1134 S1063772917010085 S2CID 125853869 a b IJspeert L W Tkachenko A Johnston C Garcia S De Ridder J Van Reeth T Aerts C August 2021 An all sky sample of intermediate to high mass OBA type eclipsing binaries observed by TESS Astronomy amp Astrophysics 652 A120 arXiv 2107 10005 Bibcode 2021A amp A 652A 120I doi 10 1051 0004 6361 202141489 a b Zeta Cha International Variable Star Index AAVSO Retrieved 2023 07 27 a b c Anders F Khalatyan A Chiappini C Queiroz A B Santiago B X Jordi C Girardi L Brown A G A Matijevic G Monari G Cantat Gaudin T Weiler M Khan S Miglio A Carrillo I Romero Gomez M Minchev I De Jong R S Antoja T Ramos P Steinmetz M Enke H 2019 Photo astrometric distances extinctions and astrophysical parameters for Gaia DR2 stars brighter than G 18 Astronomy and Astrophysics 628 A94 arXiv 1904 11302 Bibcode 2019A amp A 628A 94A doi 10 1051 0004 6361 201935765 S2CID 131780028 Kervella Pierre Arenou Frederic Thevenin Frederic 2022 Stellar and substellar companions from Gaia EDR3 Astronomy amp Astrophysics 657 A7 arXiv 2109 10912 Bibcode 2022A amp A 657A 7K doi 10 1051 0004 6361 202142146 S2CID 237605138 McDonald I Zijlstra A A Boyer M L 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 Cardiel Nicolas Zamorano Jaime Bara Salvador Sanchez De Miguel Alejandro Cabello Cristina Gallego Jesus Garcia Lucia Gonzalez Rafael Izquierdo Jaime Pascual Sergio Robles Jose Sanchez Ainhoa Tapia Carlos 2021 Synthetic RGB photometry of bright stars Definition of the standard photometric system and UCM library of spectrophotometric spectra Monthly Notices of the Royal Astronomical Society 504 3 3730 arXiv 2103 17009 Bibcode 2021MNRAS 504 3730C doi 10 1093 mnras stab997 Glebocki R Gnacinski P 2005 VizieR Online Data Catalog Catalog of Stellar Rotational Velocities Glebocki 2005 VizieR On line Data Catalog III 244 Originally Published in 2005csss 13 571G 2005yCat 3244 0G 3244 Bibcode 2005yCat 3244 0G Gontcharov G A December 2012 Dependence of kinematics on the age of stars in the solar neighborhood Astronomy Letters 38 12 771 782 arXiv 1606 08814 Bibcode 2012AstL 38 771G doi 10 1134 S1063773712120031 ISSN 0320 0108 S2CID 255201789 MAST Barbara A Mikulski Archive for Space Telescopes Space Telescope Science Institute Retrieved 25 September 2022 Cousins A W J 1960 New Bright Variable Stars Monthly Notes of the Astronomical Society of Southern Africa 19 56 Bibcode 1960MNSSA 19 56C ESA 1997 The HIPPARCOS and TYCHO catalogues Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission Vol 1200 Bibcode 1997ESASP1200 E ISBN 9290923997 a href Template Cite book html title Template Cite book cite book a journal ignored help Dubath P Rimoldini L Suveges M Blomme J Lopez M Sarro L M De Ridder J Cuypers J Guy L Lecoeur I Nienartowicz K Jan A Beck M Mowlavi N De Cat P Lebzelter T Eyer L 2011 Random forest automated supervised classification of Hipparcos periodic variable stars Monthly Notices of the Royal Astronomical Society 414 3 2602 17 arXiv 1101 2406 Bibcode 2011MNRAS 414 2602D doi 10 1111 j 1365 2966 2011 18575 x S2CID 118560311 Retrieved from https en wikipedia org w index php title Zeta Chamaeleontis amp oldid 1167401527, wikipedia, wiki, book, books, library,

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