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相关论文: Statistical properties of dwarf novae-type catacly…

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We present 855 cataclysmic variable candidates detected by the Catalina Real-time Transient Survey (CRTS) of which at least 137 have been spectroscopically confirmed and 705 are new discoveries. The sources were identified from the analysis…

By cross matching blue objects from SDSS with GALEX and the astrometric catalogues USNO-B1.0, GSC2.3 and CMC14, 64 new dwarf nova candidates with one or more observed outbursts have been identified. 14 of these systems are confirmed as…

太阳与恒星天体物理 · 物理学 2014-11-20 Patrick Wils , Boris T. Gaensicke , Andrew J. Drake , John Southworth

During the British Astronomical Association (BAA) 2022 campaign, 27436 photometric observations of the dwarf nova (DN) CG Draconis were made, with 106 eclipses recorded. This work summarizes the new data available and provides updated…

太阳与恒星天体物理 · 物理学 2023-05-03 Maxim Usatov , Jeremy Shears

Outbursts from cataclysmic variables, such as dwarf novae (DNe), are prevalent throughout the galaxy and are known to emit strongly in the ultraviolet (UV). However, the UV emission of DNe has not been studied extensively compared with the…

高能天体物理现象 · 物理学 2022-08-31 David Modiano , Rudy Wijnands , David A. H. Buckley , Mariusz Gromadzki , Sill Verberne , Marieke van Etten

Outflows in the form of fast winds from the accretion disk appear in nearly all high accretion rate cataclysmic variables (CVs), both novalikes (NLs) and dwarf novae in outburst (DN). The primary signatures of CV winds are broad,…

天体物理学 · 物理学 2007-05-23 C. S. Froning

Over six years of operation, the Catalina Real-time Transient Survey (CRTS) has identified 1043 cataclysmic variable (CV) candidates --- the largest sample of CVs from a single survey to date. Here we provide spectroscopic identification of…

太阳与恒星天体物理 · 物理学 2015-06-22 E. Breedt , B. T. Gaensicke , A. J. Drake , P. Rodriguez-Gil , S. G. Parsons , T. R. Marsh , P. Szkody , M. R. Schreiber , S. G. Djorgovski

We present 8--12\,GHz radio light curves of five dwarf nova (DN) type Cataclysmic Variable stars (CVs) in outburst (RX And, U Gem and Z Cam), or superoutburst (SU UMa and YZ Cnc), increasing the number of radio-detected DN by a factor of…

We present high speed photometric observations of 20 faint cataclysmic variables, selected from the Sloan Digital Sky Survey and Catalina catalogues. Measurements are given of 15 new directly measured orbital periods, including four…

太阳与恒星天体物理 · 物理学 2015-06-03 Patrick A. Woudt , Brian Warner , Deanne de Bude , Sally Macfarlane , Matthew P. E. Schurch , Ewald Zietsman

The March 2011 outburst of the poorly-studied cataclysmic variable NSV 1436 offered an opportunity to decide between dwarf nova and recurrent nova classifications. We use seven daily observations in the X-ray and UV by the Swift satellite,…

Cataclysmic variable (CVs) are close interacting binaries in which a white dwarf accretes materials from a low mass main sequence companion. CVs can experience nova eruptions due to low mass transfer rates. In the standard theory of CV…

太阳与恒星天体物理 · 物理学 2025-07-31 Wenshi Tang , Xiangdong Li , Bo Wang

We study the variability of the cataclysmic variable DO Dra, on time-scales of between minutes and decades. The characteristic decay time dt/dm=0.902(3) days/mag was estimated from our 3 nights of CCD R observations. The quiescent data show…

天体物理学 · 物理学 2008-06-13 I. L. Andronov , L. L. Chinarova , W. Han , Y. Kim , J. -N. Yoon

The disk instability model attributes the outbursts of dwarf novae to a thermal-viscous instability of their accretion disk, an instability to which nova-like stars are not subject. We aim to test the fundamental prediction of the disk…

高能天体物理现象 · 物理学 2018-09-19 Guillaume Dubus , Magdalena Otulakowska-Hypka , Jean-Pierre Lasota

Aims: We present discovery observations of the new cataclysmic variable star (CV) 1RXS J092737.4-191529, as well as spectra and photometry of SY Vol. The selection technique that turned up these two CVs is described; it should be efficient…

天体物理学 · 物理学 2009-11-11 Magaretha L. Pretorius , Christian Knigge

We present the analysis results of an eclipsing cataclysmic variable (CV) V729 Sgr, based on our observations and AAVSO data. Some outburst parameters were determined such as outburst amplitude ($A_{n}$) and recurrence time ($T_{n}$), and…

星系天体物理 · 物理学 2018-01-10 Han Zhongtao , Qian Shengbang , Lajús , E. Fernández , Voloshina Irina , Zhu Liying

We present a statistical study of all measurable photometric features of a large sample of dwarf novae during their outbursts and superoutbursts. We used all accessible photometric data for all our objects to make the study as complete and…

太阳与恒星天体物理 · 物理学 2016-05-16 Magdalena Otulakowska-Hypka , Arkadiusz Olech , Joseph Patterson

We have discovered a new high proper motion cataclysmic variable (CV) in the SUPERBLINK proper motion survey, which is sensitive to stars with proper motions greater than 40 mas/yr. This CV was selected for follow-up observations as part of…

太阳与恒星天体物理 · 物理学 2015-06-22 Julie N. Skinner , John R. Thorstensen , Sébastien Lépine

Cataclysmic Variables (CVs) are semi-detached binaries composed of a white dwarf orbiting a lower-mass K or M star. We investigate whether CVs are responsible for a new intriguing feature (the `hook') that appears in the Gaia DR3…

太阳与恒星天体物理 · 物理学 2024-01-23 Guillaume Dubus , Carine Babusiaux

Strong selection effects are present in observational samples of cataclysmic variables (CVs), complicating comparisons to theoretical predictions. The selection criteria used to define most CV samples discriminate heavily against the…

天体物理学 · 物理学 2009-11-13 Magaretha L. Pretorius , Christian Knigge

We present the results of our analysis of new optical, ultraviolet (UV) and X-ray observations of a highly variable source $-$ AX J1549.8$-$5416. Both the detection of several fast rise, exponential decay outbursts in the optical light…

Continuing our work from Paper I (Southworth et al., 2006) we present medium-resolution spectroscopy and broad-band photometry of seven cataclysmic variables (CVs) discovered by the SDSS. For six of these objects we derive accurate orbital…

天体物理学 · 物理学 2010-01-28 John Southworth , T. R. Marsh , B. T. Gaensicke , A. Aungwerojwit , P. Hakala , D. de Martino , H. Lehto
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