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We have performed a study of the orbital properties of seven eclipsing cataclysmic variable (CV) binary systems by analyzing photometric time series from the Transiting Exoplanet Survey Satellite (TESS). We employed Python code to determine…

Solar and Stellar Astrophysics · Physics 2025-01-22 Mennatalla Mahmoud Ellaqany , Valeria Garcia-Lopez , Emily S. Hatten , Mridul Agarwal , David A. Moffett

About 766 $\delta$ Scuti stars were observed by LAMOST by June 16, 2017. Stellar atmospheric parameters of 525 variables were determined, while spectral types were obtained for all samples. In the paper, those spectroscopic data are…

Solar and Stellar Astrophysics · Physics 2018-01-31 S. B. Qian , L. J. Li , J. J. He , J. Zhang , L. Y. Zhu , Z. T. Han

Using a filter in the GROWTH Marshal based on color and the amplitude and the timescale of variability, we have identified 372 objects as known or candidate cataclysmic variables (CVs) during the second year of operation of the Zwicky…

We present extensive photometric and spectroscopic observations of PTF1 J071912.13+485834.0, an outbursting AM CVn system discovered by the Palomar Transient Factory (PTF). AM CVn systems are stellar binaries with some of the smallest…

A few times a century, a core collapse supernova (CCSN) occurs in our galaxy. When such galactic CCSNe happen, over 99\% of its gravitational binding energy is released in the form of neutrinos. Over a period of tens of seconds, a powerful…

Instrumentation and Methods for Astrophysics · Physics 2019-01-08 Christopher W. Walter , Daniel M. Scolnic , Anže Slosar

Double white dwarfs (DWDs) are by far the most common compact binaries in the Milky Way, are important low-frequency gravitational-wave sources, and in some cases merge to become Type Ia supernovae. So far, no DWD has been identified solely…

Solar and Stellar Astrophysics · Physics 2026-02-16 Gautham Adamane Pallathadka , Yossef Zenati , Nadia L. Zakamska , Ngan H. Nguyen , Anthony L. Piro

The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will image billions of astronomical objects in the wide-fast-deep primary survey and in a set of minisurveys including intensive observations of a group of deep drilling…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-13 Philippe Gris , Humna Awan , Matthew R. Becker , Huan Lin , Eric Gawiser , Saurabh W. Jha , the LSST Dark Energy Science Collaboration

We report the discovery and characterization of a new cataclysmic variable (CV), 2CXO J050740.7-091337 (hereafter 2CXO J0507), identified using the X-ray main sequence through a cross-match between the Chandra Source Catalogue 2.1 and Gaia…

High Energy Astrophysical Phenomena · Physics 2026-05-07 Ilkham Galiullin , Vladislav Dodon , Antonio C. Rodriguez , Paula Szkody , Askar Sibgatullin

The upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will enable astronomers to discover rare and distant astrophysical transients. Host-galaxy association is crucial for selecting the most scientifically…

Instrumentation and Methods for Astrophysics · Physics 2025-12-01 Josh G. Weston , David R. Young , Stephen J. Smartt , Matt Nicholl , Matt J. Jarvis , I. H. Whittam

Cataclysmic Variables (CVs) should be present in large numbers in Globular Clusters (GCs). Numerous low-luminosity X-ray sources identified over the past few years as candidate CVs in GCs support this notion. Yet, very few "cataclysms," the…

Astrophysics · Physics 2009-11-13 Andrej Dobrotka , Jean-Pierre Lasota , Kristen Menou

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…

According to standard evolutionary theory for cataclysmic variables (CVs), angular momentum loss drives CVs to initially evolve from longer to shorter orbital periods until a minimum period is reached (\approx 80 min). At roughly this…

Solar and Stellar Astrophysics · Physics 2011-05-09 Helena Uthas

The Large Volume Detector (LVD) at INFN Laboratori Nazionali del Gran Sasso, Italy is a 1 kt liquid scintillator neutrino observatory mainly designed to study low energy neutrinos from Gravi- tational Stellar Collapses (GSC) with 100%…

High Energy Astrophysical Phenomena · Physics 2019-08-14 G. Bruno , A. Molinario , W. Fulgione , C. Vigorito

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…

Astrophysics · Physics 2008-06-13 I. L. Andronov , L. L. Chinarova , W. Han , Y. Kim , J. -N. Yoon

Currently, it may take days for a bright nova outburst to be detected. With the few exceptions, little is known about novae behaviour prior to maximum light. A theoretically-predicted population of ultra-fast novae with t2<1d is evading…

Solar and Stellar Astrophysics · Physics 2013-03-15 Kirill Sokolovsky , Stanislav Korotkiy , Alexandr Lebedev

This paper completes the series of cataclysmic variables (CVs) identified from the Sloan Digital Sky Survey I/II. The coordinates, magnitudes and spectra of 33 CVs are presented. Among the 33 are eight systems known previous to SDSS (CT…

A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository. The PTF…

We have carried out detailed time-resolved timing analyses of three cataclysmic variables (CVs) namely LS Cam, V902 Mon, and SWIFT J0746.3-1608, using the long-baseline, high-cadence optical photometric data from the Transiting Exoplanet…

Solar and Stellar Astrophysics · Physics 2022-04-06 Nikita Rawat , J. C. Pandey , Arti Joshi , Umesh Yadava

We summarize EUVE's contribution to the study of the boundary layer emission of high accretion-rate nonmagnetic cataclysmic variables, especially the dwarf novae SS Cyg, U Gem, VW Hyi, and OY Car in outburst. We discuss the optical and EUV…

Astrophysics · Physics 2007-05-23 Christopher W. Mauche

The Legacy Survey of Space and Time (LSST) with the Vera Rubin Observatory will provide strong microlensing constraints on dark compact objects (DCOs) in our Galaxy. However, most current forecasts limit their analysis to Primordial Black…

Astrophysics of Galaxies · Physics 2022-07-14 Harrison Winch , Jack Setford , Jo Bovy , David Curtin
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