2010
Photometric Study of the Very Short Period Shallow Contact Binary DD Comae Berenices
ZHU, Liying; Shengbang QIAN; Zdeněk MIKULÁŠEK; Miloslav ZEJDA; Pavel ZVĚŘINA et al.Základní údaje
Originální název
Photometric Study of the Very Short Period Shallow Contact Binary DD Comae Berenices
Název česky
Fotometrická studie velmi krátkoperiodické mělké kontaktní dvojhvězdy DD Vlasů Bereniky
Autoři
Vydání
Astronomical Journal, Springer Science+Business Media, 2010, 0004-6256
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.555
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/10:00044136
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000278691700020
Klíčová slova česky
zákrytové dvojhvězdy; hvězdný vývoj; jednotlivé hvězdy: DD Com
Klíčová slova anglicky
eclipsing binaries; stellar evolution; individual star: DD Com
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 3. 2012 16:55, prof. RNDr. Zdeněk Mikulášek, CSc.
V originále
The first photometric solutions of the very short period (VSP) close binary DD Comae Berenices (P=0.26920811) based on our new complete IRc light curves are derived. They show that the system belongs to shallow contact W UMa systems with an overcontact. The observed light curve distortions are explained by employing the spots model due to the latetype nature of both components. We have collected all available photometric data which we treated simultaneously using our own method based on the usage of computed model light curves as templates. We recalculated published times of light minimum and added new ones of our own to construct an OC diagram that spans over 70 years. We found that the orbital period of DD Com is continuously increasing with 0.00401 s/yr. The period increase may be caused by the mass transfer from the less massive component to the more massive one. DD Com is a rare system that lies on the expanding phase of the TRO cycle.
Česky
The first photometric solutions of the very short period (VSP) close binary DD Comae Berenices (P=0.26920811) based on our new complete IRc light curves are derived. They show that the system belongs to shallow contact W UMa systems with an overcontact. The observed light curve distortions are explained by employing the spots model due to the latetype nature of both components. We have collected all available photometric data which we treated simultaneously using our own method based on the usage of computed model light curves as templates. We recalculated published times of light minimum and added new ones of our own to construct an OC diagram that spans over 70 years. We found that the orbital period of DD Com is continuously increasing with 0.00401 s/yr. The period increase may be caused by the mass transfer from the less massive component to the more massive one. DD Com is a rare system that lies on the expanding phase of the TRO cycle.
Návaznosti
| MEB080832, projekt VaV |
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| ME10099, projekt VaV |
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