When the disc’s away, the stars will play: dynamical masses in the nova-like variable KR Aur with a pinch of accretion [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We obtained time-resolved optical photometry and spectroscopy of the nova-like variable KR Aurigae in the low state. The spectrum reveals a DAB white dwarf (WD) and a mid-M dwarf companion. Using the companion star’s i-band ellipsoidal modulation we refine the binary orbital period to be P = 3.906519 ± 0.000001 h.
P Rodríguez-Gil +10 more
openaire +2 more sources
FAR-ULTRAVIOLET SPECTROSCOPY OF THE NOVA-LIKE VARIABLE KQ MONOCEROTIS: A NEW SW SEXTANTIS STAR? [PDF]
The Astronomical Journal, 2013 Accepted for publication in Astronomical ...
Wolfe, Aaron +2 more
openaire +2 more sources
Spectroscopic and Photometric Analysis of the Nova-like Cataclysmic Variable PG 1000+667: A New VY Sculptoris Star [PDF]
The Astronomical Journal, 1998 Multiyear photometry and orbit-resolved spectroscopy of the nova-like cataclysmic variable PG 1000+667 show behavior associated with the VY Sculptoris subclass of nova-like cataclysmic variables. Photometric observations over a 35 month interval from Indiana University's robotic telescope RoboScope show two drops of 3 mag to a low state.
T. C. Hillwig +2 more
openaire +1 more source
Optical Studies of Seven Bright Southern Cataclysmic Variable Stars
The Astronomical Journal, 2023 We report spectroscopic observations of seven bright southern cataclysmic variable stars, collected on a single two-week observing run using the 1.9 m Radcliffe telescope at the South African Astronomical Observatory.
John R. Thorstensen +4 more
doaj +1 more source
Spiral waves and the secondary star in the nova-like variable V3885 Sgr [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 9 pages, accepted for publication in ...
Hartley, Louise E. +3 more
openaire +3 more sources
LAMOST J2043+3413—a Fast Disk Precession SW Sextans Candidate in Period Gap
The Astronomical Journal, 2023 We present follow-up photometric observations and time-series analysis of a nova-like, SW Sextans-type, cataclysmic variable (CV) candidate, LAMOST J204305.95+341340.6 (hereafter J2043+3413), with a Gaia G -band magnitude of 15.30 and a distance of 990 ...
Xin Li +7 more
doaj +1 more source
White Dwarf Photospheric Abundances in Cataclysmic Variables. IV. Deriving the [N/C] Ratio
The Astrophysical Journal, 2023 We present results from our ongoing far-ultraviolet archival analysis of cataclysmic variable white dwarf (WD) abundances for six more systems: four SU UMa dwarf novae (BW Scl, SW UMa, BC UMa, and VW Hyi) together with the dwarf nova RX And, and the ...
Patrick Godon, Edward M. Sion
doaj +1 more source
Spectra of V1405 Cas at the Very Beginning Indicate a Low-mass ONeMg White Dwarf Progenitor
The Astrophysical Journal, 2023 The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the properties of V1405 Cas (Nova Cassiopeiae 2021), which is an outlier given a ...
Kenta Taguchi +11 more
doaj +1 more source
Long-term variability survey of the old open cluster NGC 6791 [PDF]
, 2003 We present the results of a long-term variability survey of the old open cluster NGC 6791. The BVI observations, collected over a time span of 6 years, were analyzed using the ISIS image subtraction package.
B. J. Mochejska +6 more
core +3 more sources
Swift observations of the 2015 outburst of AG Peg -- from slow nova to classical symbiotic outburst [PDF]
, 2016 Symbiotic stars often contain white dwarfs with quasi-steady shell burning on their surfaces. However, in most symbiotics, the origin of this burning is unclear. In symbiotic slow novae, however, it is linked to a past thermonuclear runaway. In June 2015,
Luna, G. J. M. +3 more
core +2 more sources