Magnetic CVs as a Bright Representative of Close Binaries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00087063" target="_blank" >RIV/00216224:14310/15:00087063 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5303/PKAS.2015.30.2.175" target="_blank" >http://dx.doi.org/10.5303/PKAS.2015.30.2.175</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5303/PKAS.2015.30.2.175" target="_blank" >10.5303/PKAS.2015.30.2.175</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetic CVs as a Bright Representative of Close Binaries

Popis výsledku v původním jazyce

Due to the lack of an accretion disk in a polar (magnetic cataclysmic variable, MCV), the material transferred from the secondary is directly accreted onto the white dwarf, forming an accretion stream and a hot spot on the white-dwarf component. During the eclipses, different light components can be isolated. Therefore, the monitoring of eclipsing polars could provide valuable information on several modern astrophysical problems, e.g., CVs as planetary hosting stars, mass transfer and mass accretion inCVs, and the magnetic activity of the most rapidly rotating cool dwarfs. In the past five years, we have monitored about 10 eclipsing polars (e.g., DP Leo and HU Aqr) using several 2-m class telescopes and about 100 eclipse profiles were obtained. In this paper, we will introduce the progress of our research group at YNOs. The first direct evidence of variable mass transfer in a CV is obtained and we show that it is the dark-spot activity that causes the mass transfer in CVs.

Název v anglickém jazyce

Magnetic CVs as a Bright Representative of Close Binaries

Popis výsledku anglicky

Due to the lack of an accretion disk in a polar (magnetic cataclysmic variable, MCV), the material transferred from the secondary is directly accreted onto the white dwarf, forming an accretion stream and a hot spot on the white-dwarf component. During the eclipses, different light components can be isolated. Therefore, the monitoring of eclipsing polars could provide valuable information on several modern astrophysical problems, e.g., CVs as planetary hosting stars, mass transfer and mass accretion inCVs, and the magnetic activity of the most rapidly rotating cool dwarfs. In the past five years, we have monitored about 10 eclipsing polars (e.g., DP Leo and HU Aqr) using several 2-m class telescopes and about 100 eclipse profiles were obtained. In this paper, we will introduce the progress of our research group at YNOs. The first direct evidence of variable mass transfer in a CV is obtained and we show that it is the dark-spot activity that causes the mass transfer in CVs.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/LH14300" target="_blank" >LH14300: Výzkum zvláštních proměnných hvězd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Publications of The Korean Astronomical Society

ISSN

1225-1534

e-ISSN

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Svazek periodika

30

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

4

Strana od-do

175-178

Kód UT WoS článku

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EID výsledku v databázi Scopus

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