dc.contributor.author | Zharikov, S. V. | |
dc.contributor.author | Tovmassian, G. H. | |
dc.contributor.author | Neustroev, V. V. | |
dc.contributor.author | Michel, R. | |
dc.contributor.author | Zurita, C. | |
dc.contributor.author | Echevarría, J. | |
dc.contributor.author | Bikmaev, I. F. | |
dc.contributor.author | Pavlenko, E. P. | |
dc.contributor.author | Jeon, Y.-B. | |
dc.contributor.author | Valyavin, G. G. | |
dc.contributor.author | Aviles, A. | |
dc.date.accessioned | 2018-09-20T16:29:06Z | |
dc.date.available | 2018-09-20T16:29:06Z | |
dc.date.issued | 2008-05-22 | |
dc.identifier.citation | Zharikov, S. V. Tovmassian, G. H.; Neustroev, V. V.; Michel, R.; Zurita, C.; Echevarría, J.; Bikmaev, I. F.; Pavlenko, E. P.; Jeon, Y.-B.; Valyavin, G. G.; Aviles, A. (2008). Cyclic brightening in the short-period wz sge-type cataclysmic variable sdss j080434.20+510349.2 . Astronomy & Astrophysics 486 (2), 505-U80 | |
dc.identifier.issn | 0004-6361,1432-0746 | |
dc.identifier.uri | http://hdl.handle.net/10379/14535 | |
dc.description.abstract | Aims. We observed a new cataclysmic variable (CV) SDSS J080434.20+510349.2 to study the origin of long-term variability found in its light curve.
Methods. Multi-longitude, time-resolved, photometric observations were acquired to analyze this uncommon behavior, which has been found in two newly discovered CVs.
Results. This study of SDSS J080434.20+510349.2 concerns primarily the understanding of the nature of the observed, double-humped, light curve and its relation to a cyclic brightening that occurs during quiescence. The observations were obtained early in 2007, when the object was at about V similar to 17.1, about 0.4 mag brighter than the pre-outburst magnitude. The light curve shows a sinusoidal variability with an amplitude of about 0.07 mag and a periodicity of 42.48 min, which is half of the orbital period of the system. We observed in addition two "mini-outbursts" of the system of up to 0.6 mag, which have a duration of about 4 days each. The "mini-outburst" has a symmetric profile and is repeated in approximately every 32 days. Subsequent monitoring of the system shows a cyclical behavior of such "mini-outbursts" with a similar recurrence period. The origin of the double-humped light curve and the periodic brightening is discussed in the light of the evolutionary state of SDSS J080434.20+510349.2. | |
dc.publisher | EDP Sciences | |
dc.relation.ispartof | Astronomy & Astrophysics | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | stars : dwarf novae | |
dc.subject | stars : novae, cataclysmic variables | |
dc.subject | methods : observational | |
dc.subject | techniques : photometric | |
dc.subject | dwarf novae | |
dc.subject | accretion disks | |
dc.subject | superoutburst | |
dc.subject | superhumps | |
dc.subject | discovery | |
dc.subject | sagittae | |
dc.subject | radius | |
dc.subject | humps | |
dc.subject | stars | |
dc.title | Cyclic brightening in the short-period wz sge-type cataclysmic variable sdss j080434.20+510349.2 | |
dc.type | Article | |
dc.identifier.doi | 10.1051/0004-6361:200809721 | |
dc.local.publishedsource | https://www.aanda.org/articles/aa/pdf/2008/29/aa09721-08.pdf | |
nui.item.downloads | 0 | |