Results 1 to 10 of about 59 (56)
The Z Camelopardalis-type Star AY Piscium: Stellar and Accretion Disk Parameters
The Astrophysical Journal, 2023 We present a new study of the Z Cam-type eclipsing cataclysmic variable AY Piscium with the aim of determining the fundamental parameters of the system and the structure of the accretion flow therein.
Jan Kára +7 more
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Detection of Transitions between Dwarf Nova Outbursts, Standstills, and IW And–type Cycles
The Astrophysical JournalIW And–type objects represent a rare and intriguing subclass of cataclysmic variables that challenge the classical disk instability model. Due to their long timescales, often lasting several months, observed samples are scarce, leaving the physics of ...
Qi-Bin Sun +8 more
doaj +1 more source
Series of Dwarf Nova Outbursts in the Post-novae AT Cancri and GK Persei
The Astronomical JournalAT Cancri and GK Persei are post-novae (Nova Cnc in the seventeenth century and Nova Per 1901). Nowadays, they show episodic brightenings attributed to dwarf nova (DN) outbursts.
Vojtěch Šimon
doaj +1 more source
The Astrophysical Journal Supplement SeriesA program of long-term ground-based photometric monitoring of 134 old novae and novalike cataclysmic variables (CVs) has been concluded. In this paper, we display, analyze, and discuss the light curves of 33 of these targets, which have shown “stunted ...
R. K. Honeycutt +2 more
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Superoutbursts and Positive Superhumps Occurred during the Standstill of a Z Cam-type Dwarf Nova
The Astrophysical JournalDwarf novae (DNe) are semidetached binaries, where a white dwarf accretes material from a cool main-sequence companion via an accretion disk, and are known for their intermittent outbursts, making them key systems for studying accretion physics.
Qi-Bin Sun +6 more
doaj +1 more source
Multiphase State Transitions and Thermal−Tidal Decoupling in the AM CVn−Type Star V803 Cen
The Astrophysical JournalAM CVn systems are ultracompact, short-period binaries emitting multimessenger signals and showing both normal outbursts and superoutbursts. They serve as ideal laboratories for studying accretion physics under extreme conditions and for testing the disk
Qi-Bin Sun +11 more
doaj +1 more source
The Astronomical JournalWe report our discovery of a faint nebula surrounding a previously little-studied 15th mag variable star, ASASSN-19ds, in the Southern Hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV).
Howard E. Bond +4 more
doaj +1 more source
Discovery of a Bow-shock Nebula Around the Z Cam-type Cataclysmic Variable SY Cancri
The Astronomical JournalWe report the serendipitous discovery of a bow-shock nebula around the cataclysmic variable (CV) SY Cancri. In addition, SY Cnc lies near the edge of a faint H α -emitting nebula with a diameter of about $15^{\prime} $ .
Howard E. Bond +5 more
doaj +1 more source
Post-mortem enamel surface texture alteration during taphonomic processes-do experimental approaches reflect natural phenomena? [PDF]
PeerJ, 2022 Weber K +4 more
europepmc +1 more source