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dc.contributor.author
Orio, M.
dc.contributor.author
Drake, J. J.
dc.contributor.author
Ness, J. U.
dc.contributor.author
Behar, E.
dc.contributor.author
Luna, Gerardo Juan Manuel
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dc.contributor.author
Darnley, M. J.
dc.contributor.author
Gallagher, J.
dc.contributor.author
Gehrz, R. D.
dc.contributor.author
Kuin, N. P. M.
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Mikolajewska, J.
dc.contributor.author
Ospina, N.
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Page, K. L.
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Poggiani, R.
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Starrfield, S.
dc.contributor.author
Williams, R.
dc.contributor.author
Woodward, C. E.
dc.date.available
2022-04-05T12:47:48Z
dc.date.issued
2020-05
dc.identifier.citation
Orio, M.; Drake, J. J.; Ness, J. U.; Behar, E.; Luna, Gerardo Juan Manuel; et al.; Chandra High Energy Transmission Gratings Spectra of V3890 Sgr; IOP Publishing; The Astrophysical Journal; 895; 2; 5-2020; 1-14
dc.identifier.uri
http://hdl.handle.net/11336/154358
dc.description.abstract
The recurrent nova (RN) V3890 Sgr was observed during the seventh day after the onset of its most recent outburst, with the Chandra ACIS-S camera and High Energy Transmission Gratings. A rich emission line spectrum was detected, due to transitions of Fe-L and K-shell ions ranging from neon to iron. The measured absorbed flux is ≈10−10 erg cm−2 s −1 in the 1.4–15 Å range (0.77–8.86 keV). The line profiles are asymmetric, blueshifted, and skewed toward the blue side, as if the ejecta moving toward us are less absorbed than the receding ejecta. The full width at half-maximum of most emission lines is 1000–1200 km s−1 , with some extended blue wings. The spectrum is thermal and consistent with a plasma in collisional ionization equilibrium with column density 1.3 × 1022 cm−2 and at least two components at temperatures of about 1 and 4 keV, possibly a forward and a reverse shock, or regions with differently mixed ejecta and a red giant wind. The spectrum is remarkably similar to the symbiotic RNe V745 Sco and RS Oph, but we cannot distinguish whether the shocks occurred at a distance of a few au from the red giant, or near the giant’s photosphere, in a high-density medium containing only a low mass. The ratios of the flux in lines of aluminum, magnesium, and neon relative to the flux in lines of silicon and iron probably indicate a carbon–oxygen white dwarf.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
NOVAE
dc.subject
RECURRENT NOVAE
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CATACLYSMIC VARIABLE STARS
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X-RAY ASTRONOMY
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Chandra High Energy Transmission Gratings Spectra of V3890 Sgr
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-08-20T19:45:02Z
dc.identifier.eissn
1538-4357
dc.journal.volume
895
dc.journal.number
2
dc.journal.pagination
1-14
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Orio, M.. Istituto Nazionale di Astrofisica; Italia
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Fil: Drake, J. J.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
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Fil: Ness, J. U.. Agencia Espacial Europea. XMM-Newton Science Operations Centre; España
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Fil: Behar, E.. Technion - Israel Institute of Technology; Israel
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Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
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Fil: Darnley, M. J.. University of Liverpool; Reino Unido
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Fil: Gallagher, J.. Istituto Nazionale di Astrofisica; Italia
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Fil: Gehrz, R. D.. University of Minnesota; Estados Unidos
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Fil: Kuin, N. P. M.. University College London; Estados Unidos
dc.description.fil
Fil: Mikolajewska, J.. Polish Academy of Sciences; Argentina
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Fil: Ospina, N.. Istituto Nazionale di Astrofisica; Italia
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Fil: Page, K. L.. University of Leicester; Reino Unido
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Fil: Poggiani, R.. Istituto Nazionale di Astrofisica; Italia
dc.description.fil
Fil: Starrfield, S.. Arizona State University; Estados Unidos
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Fil: Williams, R.. Space Telescope Science Institute; Estados Unidos
dc.description.fil
Fil: Woodward, C. E.. University of Minnesota; Estados Unidos
dc.journal.title
The Astrophysical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ab8c4d
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-4357/ab8c4d
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