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From outburst to quiescence : spectroscopic evolution of V1838 Aql imbedded in a bow-shock nebula
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dc.contributor.author | Hernández Santisteban, J. V. | |
dc.contributor.author | Echevarría, J. | |
dc.contributor.author | Zharikov, S. | |
dc.contributor.author | Neustroev, V. | |
dc.contributor.author | Tovmassian, G. | |
dc.contributor.author | Chavushyan, V. | |
dc.contributor.author | Napiwotzki, R. | |
dc.contributor.author | Costero, R. | |
dc.contributor.author | Michel, R. | |
dc.contributor.author | Sánchez, L. J. | |
dc.contributor.author | Ruelas-Mayorga, A. | |
dc.contributor.author | Olguín, L. | |
dc.contributor.author | García-Díaz, Ma T. | |
dc.contributor.author | González-Buitrago, D. | |
dc.contributor.author | de Miguel, E. | |
dc.contributor.author | de la Fuente, E. | |
dc.contributor.author | de Anda, R. | |
dc.contributor.author | Suleimanov, V. | |
dc.date.accessioned | 2019-09-11T10:30:03Z | |
dc.date.available | 2019-09-11T10:30:03Z | |
dc.date.issued | 2019-06 | |
dc.identifier | 261033007 | |
dc.identifier | 0f5911f2-fb24-4a29-8b28-70f07b97fd2f | |
dc.identifier | 85068008555 | |
dc.identifier.citation | Hernández Santisteban , J V , Echevarría , J , Zharikov , S , Neustroev , V , Tovmassian , G , Chavushyan , V , Napiwotzki , R , Costero , R , Michel , R , Sánchez , L J , Ruelas-Mayorga , A , Olguín , L , García-Díaz , M T , González-Buitrago , D , de Miguel , E , de la Fuente , E , de Anda , R & Suleimanov , V 2019 , ' From outburst to quiescence : spectroscopic evolution of V1838 Aql imbedded in a bow-shock nebula ' , Monthly Notices of the Royal Astronomical Society , vol. 486 , no. 2 , pp. 2631-2642 . https://doi.org/10.1093/mnras/stz798 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | BibCode: 2019MNRAS.486.2631H | |
dc.identifier.other | ORCID: /0000-0002-6733-5556/work/61370236 | |
dc.identifier.uri | https://hdl.handle.net/10023/18459 | |
dc.description.abstract | We analyse new optical spectroscopic, direct-image and X-ray observations of the recently discovered a high-proper motion cataclysmic variable V1838 Aql. The data were obtained during its 2013 superoutburst and its subsequent quiescent state. An extended emission around the source was observed up to 30 d after the peak of the superoutburst, interpreted it as a bow shock formed by a quasi-continuous outflow from the source in quiescence. The head of the bow shock is coincident with the high-proper motion vector of the source (v⊥ = 123 ± 5 km s−1) at a distance of d = 202 ± 7 pc. The object was detected as a weak X-ray source (0.015 ± 0.002 counts s−1) in the plateau of the superoutburst and its flux lowered by two times in quiescence (0.007 ± 0.002 count s-1). Spectroscopic observations in quiescence we confirmed the orbital period value Porb = 0.0545 ± 0.0026 d, consistent with early-superhump estimates, and the following orbital parameters: γ = −21 ± 3 km s−1 and K1 = 53 ± 3 km s−1. The white dwarf is revealed as the system approaches quiescence, which enables us to infer the effective temperature of the primary Teff = 11 600 ± 400 K. The donor temperature is estimated ≲2200 K and suggestive of a system approaching the period minimum. Doppler maps in quiescence show the presence of the hotspot in He i line at the expected accretion disc-stream shock position and an unusual structure of the accretion disc in Hα. | |
dc.format.extent | 3851781 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | Cataclysmic variables | en |
dc.subject | Stars: dwarf novae | en |
dc.subject | White dwarf | en |
dc.subject | Stars: individual: V1838 Aql | en |
dc.subject | ISM: bubbles | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | From outburst to quiescence : spectroscopic evolution of V1838 Aql imbedded in a bow-shock nebula | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1093/mnras/stz798 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | https://arxiv.org/abs/1811.02349 | en |
dc.identifier.url | http://adsabs.harvard.edu/abs/2019MNRAS.486.2631H | en |
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