The Orbit and Mass of the Cepheid AW Per

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dc.contributor.authorEvans, Nancy Remage
dc.contributor.authorGallenne, Alexandre
dc.contributor.authorKervella, Pierre
dc.contributor.authorMérand, Antoine
dc.contributor.authorMonnier, John
dc.contributor.authorAnderson, Richard I
dc.contributor.authorGünther, H. Moritz
dc.contributor.authorProffitt, Charles
dc.contributor.authorWinston, Elaine M.
dc.contributor.authorPietrzynski, Grzegorz
dc.contributor.authorGieren, Wolfgang
dc.contributor.authorKuraszkiewicz, Joanna
dc.contributor.authorAnugu, Narsireddy
dc.contributor.authorRoettenbacher, Rachael M.
dc.contributor.authorLanthermann, Cyprien
dc.contributor.authorGutierrez, Mayra
dc.contributor.authorSchaefer, Gail
dc.contributor.authorSetterholm, Benjamin R.
dc.contributor.authorIbrahim, Noura
dc.contributor.authorKraus, Stefan
dc.date.accessioned2024-09-17T13:21:12Z
dc.date.available2024-09-17T13:21:12Z
dc.date.issued2024-09
dc.descriptionIndexación: Scopus.
dc.description.abstractThe Cepheid AW Per is a component in a multiple system with a long-period orbit. The radial velocities of Griffin cover the 38 yr orbit well. An extensive program of interferometry with the Center for High Angular Resolution Astronomy array is reported here, from which the long-period orbit is determined. In addition, a Hubble Space Telescope high-resolution spectrum in the ultraviolet demonstrates that the companion is itself a binary with nearly equal-mass components. These data combined with a distance from Gaia provide a mass of the Cepheid (primary) of M 1 = 6.79 ± 0.85 M ⊙. The combined mass of the secondary is M S = 8.79 ± 0.50 M ⊙. The accuracy of the mass will be improved after the fourth Gaia data release, expected in approximately two years.
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85203009965&origin=resultslist&sort=plf-f&src=s&sid=10772d8bae0a069cf56df862026d7f3b&sot=aff&sdt=cl&cluster=scosubjabbr%2C%22PHYS%22%2Ct%2C%22EART%22%2Ct%2Bscosubtype%2C%22ar%22%2Ct%2Bscofreetoread%2C%22all%22%2Ct&s=AF-ID%2860002636%29+AND+SUBJAREA%28PHYS%29&sl=34&sessionSearchId=10772d8bae0a069cf56df862026d7f3b&relpos=3
dc.identifier.citationAstrophysical Journal Open Access Volume 972, Issue 21 September 2024 Article number 145
dc.identifier.doi10.3847/1538-4357/ad5e7d
dc.identifier.issn0004637X
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/60247
dc.language.isoen
dc.publisherInstitute of Physics
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAstrophysical Journal Open Access Volume 972, Issue 21 September 2024 Article number 145
dc.titleThe Orbit and Mass of the Cepheid AW Per
dc.typeArtículo
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