CATACLYSMIC VARIABLES OBSERVED DURING K2 CAMPAIGNS 0 AND 1
نویسندگان
چکیده
منابع مشابه
0 Non - conservative Evolution of Cataclysmic Variables
—We suggest a new mechanism to account for the loss of angular momentum in binaries with non-conservative mass exchange. It is shown that in some cases the loss of matter can result in increase of the orbital angular momentum of a binary. If included into consideration in evolutionary calculations, this mechanism appreciably extends the range of mass ratios of components for which mass exchange...
متن کاملCharacterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. I. Classifying Low-mass Host Stars Observed during Campaigns 1–7
We present near-infrared spectra for 144candidate planetary systems identified during Campaigns1–7 of the NASA K2 Mission. The goal of the survey was to characterize planets orbiting low-mass stars, but our Infrared Telescope Facility/SpeX and Palomar/TripleSpec spectroscopic observations revealed that 49% of our targets were actually giant stars or hotter dwarfs reddened by interstellar exti...
متن کاملCataclysmic variables
Cataclysmic variables are binary stars in which a relatively normal star is transferring mass to its compact companion. This interaction gives rise to a rich range of behaviour, of which the most noticeable are the outbursts that give the class its name. Novae belong to the class, as do the less well known dwarf novae and magnetic systems. Novae draw their energy from nuclear reactions, while d...
متن کاملRapid Oscillations in Cataclysmic Variables
I give an overview of the rich phenomenology of dwarf nova oscillations (DNOs) and Quasi-periodic Oscillations (QPOs) observed in cataclysmic variable stars (CVs). The favoured interpretation of these rapid brightness modulations (3 – >1000 s time scales) is that they are magnetic in nature – magnetically channelled accretion from the inner accretion disc for DNOs and possible magnetically exci...
متن کاملThe Periods of Cataclysmic Variables
The present status of the period studies of cataclysmic variables is briefly reviewed, mainly from the observational point of view. A few comments on individual objects include EM Cyg, Z Cha, WZ Sge and AM CVn.
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2016
ISSN: 1538-3881
DOI: 10.3847/0004-6256/152/1/5