Results 71 to 80 of about 10,397 (194)
A Construction of an Automatic Observation System for Bright and Long Period Variable Stars [PDF]
Journal of Astronomy and Space Sciences, 2006 An automatic observation system has been constructed at Chungbuk National University for the purpose of monitoring the bright and long period variable stars effectively.
Joh-Na Yoon +3 more
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Gas flow in cataclysmic variable stars
The Astrophysical Journal, 1975 A numerical hydrodynamic scheme, applicable to gas flow in binary stars, is presented which incorporates the effects of pressure and gravitational forces, radiative cooling, and shock formation. The method is used to study gas flow originating from Roche lobe overflow through the inner Lagrangian point, L$sub 1$, in a binary star modeled to resemble ...
openaire +1 more source
Overwinter gains in body fat challenge assumptions about winter nutrition in northern ungulates
Ecosphere, Volume 16, Issue 12, December 2025.Abstract Animals in northern environments contend with seasonally variable resources and have evolved life histories to cope with the flush of nutrients in summer and scarcity in winter. Ungulates cope with seasonal variation in resources by accreting fat stores when resources are plentiful during the growing season and then mobilizing these stores to ...
Kristin Denryter, John A. Crouse
wiley +1 more source
The AH Pictoris Syndrome: Continuous Trains of Stunted Outbursts in Novalike Variables
The Astrophysical JournalNovalike variables are a subgroup of cataclysmic variables (CVs) that—unlike dwarf novae—do not exhibit strong brightenings in their long-term light curves.
Albert Bruch
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Journal of Astronomy and Space Sciences, 2019 The purpose of this study was to develop a period analysis algorithm for detecting new variable stars in the time-series data observed by charge coupled device (CCD). We used the data from a variable star monitoring program of the CBNUO.
Kim, Dong-Heun +3 more
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Spectroscopically Identified Cataclysmic Variables from the LAMOST Survey. II. Period Estimates
The Astronomical Journal, 2023 We examine a sample of 340 cataclysmic variables (CVs) from the latest data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey, along with 18 objects that are newly classified as CVs.
Wen Hou +4 more
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Present‐Day Thermal State and Surface Heat Flux of the Moon
Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.Abstract The concentration of volcanic material and Heat‐Producing Elements (HPE) on the lunar nearside surface suggests an asymmetry of interior properties and thermal history between the two hemispheres. However, the distribution of HPE beneath the surface and the processes that led to their potential enrichment on the nearside remain poorly ...
Sabatino Santangelo +4 more
wiley +1 more source
Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables
The Astronomical JournalSpectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties.
Paula Szkody +10 more
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The Astrophysical Journal, 2023 We present a timing study of the short-period eclipsing cataclysmic variable (CV) HT Cas. Based on new eclipse times derived from our photometric monitoring and archival optical data, combined with historical timings, spanning ∼42 yr, we detect a secular
Z.-T Han +10 more
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A spectrophotometric survey of cataclysmic variable stars
The Astronomical Journal, 1982 A sample of dwarf novae and other cataclysmic variable stars were observed using the multichannel spectrophotometer on the 5-m Hale reflector. A preliminary qualitative description of the continuum distributions is given and a discussion of the Balmer emission-line fluxes is made.
J. B. Oke, R. A. Wade
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