Results 71 to 80 of about 627 (186)

Doppler tomography of cataclysmic variables

Astronomische Nachrichten, 2004
AbstractThe study of cataclysmic variables (CVs), and in particular of the evolution of their accretion discs throughout their different brightness states, has benefited largely from the use of indirect imaging techniques. I report on the latest results obtained from Doppler tomography of CVs concentrating mainly on results published since the 2000 ...
openaire   +2 more sources

Petrogenesis of Very‐Low‐Ti Basalts Returned by Chang'e‐6 From the Lunar Farside

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Lunar volcanism provides critical insights into the Moon's thermochemical evolution. We present petrological and geochemical analyses of six very‐low‐Ti (VLT) basalt fragments from Chang'e‐6 (CE6) samples. These basalts yield a Pb‐Pb age of around 2.9 Ga, representing the youngest reported VLT volcanism. They are slightly older than the low‐Ti
Shitou Wu, Di Zhang, Heng‐Ci Tian, Wei Yang, Hao Wang, Yueheng Yang, Xu Tang, Chao Huang, Lihui Jia, Qiuli Li, Qin Zhou, Yi Chen, Sen Hu, Xian‐Hua Li, Fu‐Yuan Wu   +14 more
wiley   +1 more source

Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables

The Astronomical Journal
Spectroscopic 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, Jan van Roestel, Paul A. Mason, Colin Littlefield, R. Michael Rich, Eric C. Bellm, Filipp D. Romanov, Brian F. Healy, Theophile Jegou du Laz, Russ R. Laher, Ben Rusholme   +10 more
doaj   +1 more source

Evolution of cataclysmic variables under different magnetic braking prescriptions

Astronomy & Astrophysics
Context. The evolution of cataclysmic variables (CVs) – interacting binaries where a low-mass donor transfers matter to a white dwarf via an accretion disk – is critically controlled by magnetic braking (MB).
Zhou Bingyao, Zhu Chunhua, Lü Guoliang, Guo Sufen, Liu Helei, Khamrakulov Farkhodjon   +5 more
doaj   +1 more source

Winds from Cataclysmic Variables [PDF]

International Astronomical Union Colloquium, 1997
AbstractThe winds associated with high states of non-magnetic (diskaccreting) cataclysmic variables are described and discussed. A quick summary of the basic phenomenology is given, and followed by a presentation of some of the more important recent developments in our understanding.
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

New Observations of the Old Magnetic Nova GQ Muscae

Open Astronomy, 2014
Photometric observations of GQ Mus performed between 1992 and 2011 are reported. We find that the total amplitude of the orbital modulation of its brightness decreased from ~ 0.9 mag in 1992 to ~ 0.2 mag in 2010, becoming comparable to the amplitude of ...
Narloch W., Kaluzny J., Krzeminski W., Pych W., Rozyczka M., Shectman S., Thompson I. B., Tomov T.   +7 more
doaj   +1 more source

Discovering Cataclysmic Variables from the Rubin Observatory LSST

The Astrophysical Journal Supplement Series
The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) will provide a windfall of new transients and variable sources. Here we have performed mock observation simulations to understand LSST’s expected detection rates for cataclysmic ...
D. A. H. Buckley, Y. Tampo, P. Szkody, M. Motsoaledi, S. Scaringi, M. Lochner, N. Rawat, J. P. Marais, B. van Soelen, S. Macfarlane, A. van Dyk   +10 more
doaj   +1 more source

Early Photometric and Spectral Evolution of Nova Cygni 2014 (V2659 Cyg)

Open Astronomy, 2015
We present optical spectroscopic and UBV (RI)C photometric observations of Nova Cygni 2014 (V2659 Cyg) from its rebrightening to the nebular stage. After the first maximum, the nova underwent several irregular flare-like rebrightenings, with amplitudes ...
Burlak M. A., Esipov V. F., Komissarova G. V.   +2 more
doaj   +1 more source

Not Just Half a Doctor: Promoting Humanism During Stressful Times

Annals of the Child Neurology Society, Volume 4, Issue 1, Page 6-11, March 2026.
Nigel S. Bamford, Nomazulu Dlamini, Bruce H. Cohen, Ann Tilton, Scott L. Pomeroy, Phillip L. Pearl, Nina F. Schor, E. Steve Roach   +7 more
wiley   +1 more source