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Mukai, K.; Luna, G.J.M.; Cusumano, G.; Segreto, A.; Munari, U.; Sokoloski, J.L.; Lucy, A.B.; Nelson, T.; Nuñez, N.E. "SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars" (2016) Monthly Notices of the Royal Astronomical Society: Letters. 461(1):L1-L5
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Abstract:

Symbiotic star surveys have traditionally relied almost exclusively on low resolution optical spectroscopy. However, we can obtain a more reliable estimate of their total Galactic population by using all available signatures of the symbiotic phenomenon. Here we report the discovery of a hard X-ray source, 4PBC J0642.9+5528, in the Swift hard X-ray all-sky survey, and identify it with a poorly studied red giant, SU Lyn, using pointed Swift observations and ground-based optical spectroscopy. The X-ray spectrum, the optical to UV spectrum, and the rapid UV variability of SU Lyn are all consistent with our interpretation that it is a symbiotic star containing an accreting white dwarf. The symbiotic nature of SU Lyn went unnoticed until now, because it does not exhibit emission lines strong enough to be obvious in low resolution spectra. We argue that symbiotic stars without shell-burning have weak emission lines, and that the current lists of symbiotic stars are biased in favour of shell-burning systems. We conclude that the true population of symbiotic stars has been underestimated, potentially by a large factor. © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Registro:

Documento: Artículo
Título:SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars
Autor:Mukai, K.; Luna, G.J.M.; Cusumano, G.; Segreto, A.; Munari, U.; Sokoloski, J.L.; Lucy, A.B.; Nelson, T.; Nuñez, N.E.
Filiación:CRESST and X-ray Astrophysics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, United States
Instituto de Astronomía y Física del Espacio (IAFE, CONICET-UBA), Av. Inte. Güiraldes 2620, Buenos Aires, C1428ZAA, Argentina
INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica, Via U. La Malfa 153, Palermo, I-90146, Italy
INAF - Astronomical Observatory of Padova, Asiago (VI), I-36012, Italy
Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027, United States
Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St, Pittsburgh, PA 15260, United States
Instituto de Ciencias Astronómicas de la Tierra y del Espacio (ICATE-UNSJ, CONICET), Av. España (S) E-1512, San Juan, J5402 DSP, Argentina
Palabras clave:Binaries: symbiotic; Stars: individual: SU Lyn; X-rays: binaries
Año:2016
Volumen:461
Número:1
Página de inicio:L1
Página de fin:L5
DOI: http://dx.doi.org/10.1093/mnrasl/slw087
Título revista:Monthly Notices of the Royal Astronomical Society: Letters
Título revista abreviado:Mon. Not. R. Astron. Soc. Lett
ISSN:17453925
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17453925_v461_n1_pL1_Mukai

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Citas:

---------- APA ----------
Mukai, K., Luna, G.J.M., Cusumano, G., Segreto, A., Munari, U., Sokoloski, J.L., Lucy, A.B.,..., Nuñez, N.E. (2016) . SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars. Monthly Notices of the Royal Astronomical Society: Letters, 461(1), L1-L5.
http://dx.doi.org/10.1093/mnrasl/slw087
---------- CHICAGO ----------
Mukai, K., Luna, G.J.M., Cusumano, G., Segreto, A., Munari, U., Sokoloski, J.L., et al. "SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars" . Monthly Notices of the Royal Astronomical Society: Letters 461, no. 1 (2016) : L1-L5.
http://dx.doi.org/10.1093/mnrasl/slw087
---------- MLA ----------
Mukai, K., Luna, G.J.M., Cusumano, G., Segreto, A., Munari, U., Sokoloski, J.L., et al. "SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars" . Monthly Notices of the Royal Astronomical Society: Letters, vol. 461, no. 1, 2016, pp. L1-L5.
http://dx.doi.org/10.1093/mnrasl/slw087
---------- VANCOUVER ----------
Mukai, K., Luna, G.J.M., Cusumano, G., Segreto, A., Munari, U., Sokoloski, J.L., et al. SU Lyncis, a hard X-ray bright M giant: Clues point to a large hidden population of symbiotic stars. Mon. Not. R. Astron. Soc. Lett. 2016;461(1):L1-L5.
http://dx.doi.org/10.1093/mnrasl/slw087