[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki21\/hd-73882-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki21\/hd-73882-wikipedia\/","headline":"HD 73882 – Wikipedia","name":"HD 73882 – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Eclipsing binary system in constellation Vela HD 73882 is a visual binary system","datePublished":"2020-05-02","dateModified":"2020-05-02","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki21\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki21\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki21\/hd-73882-wikipedia\/","wordCount":5564,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Eclipsing binary system in constellation VelaHD 73882 is a visual binary system with the components separated by 0.6\u2033 and a combined spectral class of O8.[8] One of stars is an eclipsing binary system.  The period of variability is listed as both 2.9199 days and 20.6 days, possibly due to the secondary being a spectroscopic binary star.[9][10]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4The system lies in the constellation of Vela about 2,400\u00a0light years away from the Sun and is a member of the open cluster Ruprecht 64.[11]Components[edit]The apparent magnitudes of the visible components A and B are 7.8 and 8.8 respectively.  The primary, A, is thought to be the eclipsing binary.  It shows eclipses every 1.5\u00a0d,[12] but there are thought to be both primary and secondary minima with the actual orbital period being 2.92\u00a0d.[9]  Additional radial velocity variations with a period of 20.6\u00a0d have also been found, suggesting that one of the components is a spectroscopic binary.[9]The spectral types of the individual components are not known.  The observed combined spectral type is variously given as O8.5V, O9III, or O8.5IV.[13]  The spectrum is presumed to be dominated by the primary pair which are more than a magnitude brighter than the secondary.  The eclipsing components are likely to be two similar stars since the primary and secondary eclipses are almost identical.  One source gives the combined mass of the eclipsing pair as 26.6\u00a0M\u2609 and the mass of the secondary as 2.31\u00a0M\u2609, with an orbital period of about 643 years, but this is highly speculative with no reliable orbits available and even the number of components uncertain.[12]Circumstellar nebula[edit]The star system, located behind the Vela Supernova Remnant,[14] is obscured by the translucent nebula Gum 14\u00a0[it], located near the Vela Molecular Ridge nebulae complex. The nebula is illuminated by this star system and probably has a close physical association with it, together with brighter reflection nebula NGC 2626. The nebulae are rich in hydrogen (including deuterated hydrogen)[15] and also contain detectable amounts of sodium, carbon monoxide, and other carbon compounds,[3] including polycyclic aromatic hydrocarbons,[16] and thiols.[17] The nebula associated with the HD 73882 is one of the few exhibiting emission from compounds containing three carbon atoms.[18] The nebula has unusually low levels of oxygen compared to the average interstellar medium.[19]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4References[edit]^ “Light Curve”. Hipparcos ESA. ESA. Retrieved 17 February 2022.^ “NX Velorum”, International Variable Star Index, retrieved 2022-01-03^ a b Snow, T. P.; Rachford, B. L.; Tumlinson, J.; Shull, J. M.; Welty, D. E.; Blair, W. P.; Ferlet, R.; Friedman, S. D.; Gry, C.; Jenkins, E. B.; Lecavelier, A.; Lemoine, M.; Morton, D. C.; Savage, B. D.; Sembach, K. R.; Vidal-Madjar, A.; York, D. G.; Andersson, B-G; Feldman, P. D.; Moos, H. W. (1999), “[ITAL]Far Ultraviolet Spectroscopic Explorer[\/ITAL] Observations of Molecular Hydrogen in Translucent Interstellar Clouds: The Line of Sight toward HD 73882”, The Astrophysical Journal, 538: L65\u2013L68, arXiv:astro-ph\/0005090, doi:10.1086\/312791, S2CID\u00a0119349223^ a b c Brown, A. G. A.;  et\u00a0al. (Gaia collaboration) (2021). “Gaia Early Data Release 3: Summary of the contents and survey properties”. Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A…649A…1G. doi:10.1051\/0004-6361\/202039657. S2CID\u00a0227254300. (Erratum:\u00a0doi:10.1051\/0004-6361\/202039657e).  Gaia EDR3 record for this source at VizieR.^ Samus, N. N.;  et\u00a0al. (2017), “General Catalogue of Variable Stars”, Astronomy Reports, 5.1, 61 (1): 80\u201388, Bibcode:2017ARep…61…80S, doi:10.1134\/S1063772917010085, S2CID\u00a0125853869, retrieved 2021-11-27^ a b De Cia, Annalisa; Jenkins, Edward B.; Fox, Andrew J.; Ledoux, C\u00e9dric; Ramburuth-Hurt, Tanita; Konstantopoulou, Christina; Petitjean, Patrick; Krogager, Jens-Kristian (2021), “Large metallicity variations in the Galactic interstellar medium”, Nature, 597 (7875): 206\u2013208, arXiv:2109.03249, Bibcode:2021Natur.597..206D, doi:10.1038\/s41586-021-03780-0, PMID\u00a034497395, S2CID\u00a0237439613^ Bagnulo, Stefano; Cox, Nick L. J.; Cikota, Aleksandar; Siebenmorgen, Ralf; Voshchinnikov, Nikolai V.; Patat, Ferdinando; Smith, Keith T.; Smoker, Jonathan V.; Taubenberger, Stefan; Kaper, Lex; Cami, Jan; the LIPS collaboration (2017), “Large Interstellar Polarisation Survey (LIPS)”, Astronomy & Astrophysics, 608: A146, arXiv:1710.02439, doi:10.1051\/0004-6361\/201731459, S2CID\u00a0119431016^ Shull, J. Michael; Danforth, Charles W. (2019), “Distances to Galactic OB Stars: Photometry versus Parallax”, The Astrophysical Journal, 882 (2): 180, arXiv:1907.13148, Bibcode:2019ApJ…882..180S, doi:10.3847\/1538-4357\/ab357d, S2CID\u00a0199000762^ a b c Sota, A.; Apell\u00e1niz, J. Ma\u00edz; Morrell, N. I.; Barb\u00e1, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. (2013), “The Galactic O-Star Spectroscopic Survey (Gosss). Ii. Bright Southern Stars”, The Astrophysical Journal Supplement Series, 211: 10, arXiv:1312.6222, Bibcode:2014ApJS..211…10S, doi:10.1088\/0067-0049\/211\/1\/10, S2CID\u00a0118847528^ Sana, H.; Le Bouquin, J.-B.; Lacour, S.; Berger, J.-P.; Duvert, G.; Gauchet, L.; Norris, B.; Olofsson, J.; Pickel, D.; Zins, G.; Absil, O.; De Koter, A.; Kratter, K.; Schnurr, O.; Zinnecker, H. (2014), “Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection”, The Astrophysical Journal Supplement Series, 215 (1): 15, arXiv:1409.6304, Bibcode:2014ApJS..215…15S, doi:10.1088\/0067-0049\/215\/1\/15, S2CID\u00a053500788^ Kharchenko, N. V.; Piskunov, A. E.; R\u00f6ser, S.; Schilbach, E.; Scholz, R.-D. (2005), “Astrophysical parameters of Galactic open clusters”, Astronomy and Astrophysics, 438 (3): 1163\u20131173, Bibcode:2005A&A…438.1163K, doi:10.1051\/0004-6361:20042523, S2CID\u00a09079873^ a b Tokovinin, Andrei (2018-03-01). “The Updated Multiple Star Catalog”. The Astrophysical Journal Supplement Series. 235 (1): 6. arXiv:1712.04750. Bibcode:2018ApJS..235….6T. doi:10.3847\/1538-4365\/aaa1a5. ISSN\u00a00067-0049. S2CID\u00a0119047709.^ Skiff, B. A (2014). “VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)”. VizieR On-line Data Catalog: B\/Mk. Originally Published in: Lowell Observatory (October 2014). 1. Bibcode:2014yCat….1.2023S.^ Kameswara Rao, N.; Lambert, David L.; Reddy, Arumalla B. S.; Gupta, Ranjan; Muneer, S.; Singh, Harinder P. (2017), “Unveiling Vela – Time Variability of Interstellar Lines in the Direction of the Vela Supernova Remnant II. Na D and Ca II”, Monthly Notices of the Royal Astronomical Society: stx139, arXiv:1701.04349, doi:10.1093\/mnras\/stx139^ Ferlet, R.; Andr\u00e9, M.; H\u00e9brard, G.; Lecavelier Des Etangs, A.; Lemoine, M.; Pineau Des For\u00eats, G.; Roueff, E.; Rachford, B. L.; Shull, J. M.; Snow, T. P.; Tumlinson, J.; Vidal-Madjar, A.; York, D. G.; Moos, H. W. (2000), “[ITAL]Far Ultraviolet Spectroscopic Explorer[\/ITAL] Observations of the HD Molecule toward HD 73882”, The Astrophysical Journal, 538: L69\u2013L72, arXiv:astro-ph\/0006039, doi:10.1086\/312799, S2CID\u00a016667758^ Shaw, Gargi; Ferland, G. J. (2021), “Role of Polycyclic Aromatic Hydrocarbons on the Cosmic-Ray ionization rate in the Galaxy”, The Astrophysical Journal, 908 (2): 138, arXiv:2101.03732, Bibcode:2021ApJ…908..138S, doi:10.3847\/1538-4357\/abdab2, S2CID\u00a0231573427^ Zhao, D.; Galazutdinov, G. A.; Linnartz, H.; Kre\u0142owski, J. (2015), “Mercapto radical (SH) in translucent interstellar clouds”, Astronomy & Astrophysics, 579: L1, Bibcode:2015A&A…579L…1Z, doi:10.1051\/0004-6361\/201526488^ Schmidt, M. R.; Kre\u0142owski, J.; Galazutdinov, G. A.; Zhao, D.; Haddad, M. A.; Ubachs, W.; Linnartz, H. (2014), “Detection of vibronic bands of C3 in a translucent cloud towards HD 169454”, Monthly Notices of the Royal Astronomical Society, 441 (2): 1134\u20131146, Bibcode:2014MNRAS.441.1134S, doi:10.1093\/mnras\/stu641^ Zuo, Wenbo; Li, Aigen; Zhao, Gang (2021), “Interstellar Extinction and Elemental Abundances: Individual Sight Lines”, The Astrophysical Journal Supplement Series, 257 (2): 63, arXiv:2111.03903, Bibcode:2021ApJS..257…63Z, doi:10.3847\/1538-4365\/ac2cc3, S2CID\u00a0243847325       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki21\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki21\/hd-73882-wikipedia\/#breadcrumbitem","name":"HD 73882 – Wikipedia"}}]}]