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SDSS-V is carrying out a dedicated survey for white dwarfs, single and in binaries, and we report the analysis of the spectroscopy of 504 cataclysmic variables (CVs) and CV candidates obtained during the first 34 months of observations of…

This paper continues the series that identifies new cataclysmic variables found in the Sloan Digital Sky Survey. We present 36 cataclysmic variables and one possible symbiotic star from Sloan spectra obtained during 2002, of which 34 are…

We present photometry of 11 and spectroscopy of 35 potential cataclysmic variables from the Sloan Digital Sky Survey, the Catalina Real-Time Transient Survey and vsnet-alerts. The photometry results include quasi-periodic oscillations…

Strong lensing by galaxy clusters can be used to significantly expand the survey reach, thus allowing observation of magnified high-redshift supernovae that otherwise would remain undetected. Strong lensing can also provide multiple images…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-01 T. Petrushevska

The spatial distribution, Galactic model parameters and luminosity function of cataclysmic variables (CVs) are established using re-estimated trigonometric parallaxes of {\it Gaia} DR3. The data sample of 1,587 CVs in this study is claimed…

Solar and Stellar Astrophysics · Physics 2023-03-29 R. Canbay , S. Bilir , A. Özdönmez , T. Ak

We present spectroscopy of seven cataclysmic variable stars with orbital periods P(orb) greater than 5 hours, all but one of which are known to be dwarf novae. Using radial velocity measurements we improve on previous orbital period…

Astrophysics · Physics 2016-08-30 John R. Thorstensen , William H. Fenton , Cynthia J. Taylor

We present time-series VLT spectroscopy and NTT photometry of the cataclysmic variable SDSS J220553.98+115553.7, which contains a pulsating white dwarf. We determine a spectroscopic orbital period of 82.825 +/- 0.089 min from velocity…

Astrophysics · Physics 2009-11-13 John Southworth , D W Townsley , B T Gaensicke

We have used the PACS instrument on the Herschel Space Observatory to observe eight cataclysmic variables at 70 and 160 microns. Of these eight objects, only AM Her was detected. We have combined the Herschel results with ground-based,…

Solar and Stellar Astrophysics · Physics 2015-06-12 Thomas E. Harrison , Ryan T. Hamilton , Claus Tappert , Douglas I. Hoffman , Ryan K. Campbell

Among solar system objects, comets coming from the Oort Cloud are an elusive population, intrinsically rare and difficult to detect. Nonetheless, as the more pristine objects we can observe, they encapsulate critical cues on the formation…

Accurate determination of the rates of nova eruptions in different kinds of galaxies give us strong constraints on those galaxies' underlying white dwarf and binary populations, and those stars' spatial distributions. Until 2016,…

Astrophysics of Galaxies · Physics 2022-10-26 Shifra Mandel , Michael M. Shara , David Zurek , Charlie Conroy , Pieter van Dokkum

Cataclysmic Variables (CV) are close binary systems, in which the primary, the more massive star, is a white dwarf. CVs usually exhibit a number of periodicities, most of which are now understood. However, recently, a new phenomenon was…

Astrophysics · Physics 2008-11-26 G. Tovmassian , S. Zharikov , V. Neustroev

We present HST spectroscopy for 45 cataclysmic variables (CVs), observed with HST/COS and HST/STIS. For 36 CVs, the white dwarf is recognisable through its broad Ly$\alpha$ absorption profile and we measure the white dwarf effective…

The Jansky Very Large Array was used to observe 121 magnetic cataclysmic variables (MCVs). We report radio detections of 19 stars. Fourteen are new radio sources, increasing the number of MCVs that are radio sources by more than twofold,…

Solar and Stellar Astrophysics · Physics 2017-12-06 Paul E. Barrett , Christopher Dieck , Anthony J. Beasley , Kulinder P. Singh , Paul A. Mason

Time series photometry of 20 Cataclysmic Variables detected by the Catalina Real-time Transient Survey is presented. 14 of these systems have not been observed previously and only two have been examined in-depth. From the observations we…

I present brief status reports on three large observational projects that are designed to test our current understanding of the evolution of cataclysmic variables (CVs): The spectroscopic selection of new CVs in the Hamburg Quasar Survey,…

Astrophysics · Physics 2007-05-23 Boris Gaensicke

Owing to the exceptional sensitivity of the Vera C. Rubin Observatory, we predict that its upcoming LSST images will be contaminated by numerous flares from centimeter-scale space debris in Low Earth Orbits (LEO). Millisecond-duration…

Instrumentation and Methods for Astrophysics · Physics 2024-01-31 Abraham Loeb

We explore the observational appearance of the merger of a low-mass star with a white dwarf (WD) binary companion. We are motivated by Schreiber et al. (2016), who found that multiple tensions between the observed properties of cataclysmic…

Solar and Stellar Astrophysics · Physics 2021-12-22 Brian D. Metzger , Yossef Zenati , Laura Chomiuk , Ken J. Shen , Jay Strader

Supernovae that are strongly gravitationally lensed (gLSNe) by galaxies are powerful probes of astrophysics and cosmology that will be discovered systematically by next-generation wide-field, high-cadence imaging surveys such as the Zwicky…

Astrophysics of Galaxies · Physics 2019-07-10 Daniel A. Goldstein , Peter E. Nugent , Ariel Goobar

The Vera C. Rubin Legacy Survey of Space and Time holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping variability time scales from minutes to a decade. To prepare…

Instrumentation and Methods for Astrophysics · Physics 2022-08-10 Kelly M. Hambleton , Federica B. Bianco , Rachel Street , Keaton Bell , David Buckley , Melissa Graham , Nina Hernitschek , Michael B. Lund , Elena Mason , Joshua Pepper , Andrej Prsa , Markus Rabus , Claudia M. Raiteri , Robert Szabo , Paula Szkody , Igor Andreoni , Simone Antoniucci , Barbara Balmaverde , Eric Bellm , Rosaria Bonito , Giuseppe Bono , Maria Teresa Botticella , Enzo Brocato , Katja Bucar Bricman , Enrico Cappellaro , Maria Isabel Carnerero , Ryan Chornock , Riley Clarke , Phil Cowperthwaite , Antonino Cucchiara , Filippo D'Ammando , Kristen C. Dage , Massimo Dall'Ora , James R. A. Davenport , Domitilla de Martino , Giulia de Somma , Marcella Di Criscienzo , Rosanne Di Stefano , Maria Drout , Michele Fabrizio , Giuliana Fiorentino , Poshak Gandhi , Alessia Garofalo , Teresa Giannini , Andreja Gomboc , Laura Greggio , Patrick Hartigan , Markus Hundertmark , Elizabeth Johnson , Michael Johnson , Tomislav Jurkic , Somayeh Khakpash , Silvio Leccia , Xiaolong Li , Davide Magurno , Konstantin Malanchev , Marcella Marconi , Raffaella Margutti , Silvia Marinoni , Nicolas Mauron , Roberto Molinaro , Anais Moller , Marc Moniez , Tatiana Muraveva , Ilaria Musella , Chow-Choong Ngeow , Andrea Pastorello , Vincenzo Petrecca , Silvia Piranomonte , Fabio Ragosta , Andrea Reguitti , Chiara Righi , Vincenzo Ripepi , Liliana Rivera Sandoval , Keivan G. Stassun , Michael Stroh , Giacomo Terreran , Virginia Trimble , Yiannis Tsapras , Sjoert van Velzen , Laura Venuti , Jorick S. Vink