PHOTOMETRIC STUDY OF TWO CONTACT BINARY SYSTEMS AND A DETACHED LATE DWARF plus M DWARF COMPONENTS

被引：1

作者：

Michel, R. ^{[1
]}

Barani, C. ^{[2
]}

Martignoni, M. ^{[3
,6
]}

Acerbi, F. ^{[4
]}

Altamirano-Devora, L. ^{[1
,5
]}

机构：

[1] UNAM, Inst Astron, Ensenada, Baja California, Mexico

[2] Via Molinetto 35, I-26845 Triulza Di Codogno, LO, Italy

[3] Staz Astron Betelgeuse, Magnago, Italy

[4] Via Zoncada 51, I-26845 Codogno, LO, Italy

[5] Univ Autonoma Baja California, Ensenada, Baja California, Mexico

[6] Via Don G Minzoni 26-D, I-20020 Magnago, MI, Italy

来源：

REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2023年 / 59卷 / 01期

基金：

美国国家科学基金会;

关键词：

binaries: close; stars: fundamental parameters; stars: individual: AF LMi; CzeV188; CRTS J073333.0+302556; techniques: photometric; EVOLUTION; GAIA; TEMPERATURES; VARIABILITY; STARS;

D O I：

10.22201/ia.01851101p.2023.59.01.09

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The results of our study of the eclipsing binary systems AF LMi, CzeV188 and CRTS J073333.0+302556 based on new CCD B, V, R-C, I-C complete light curves, are here presented. The short periods of these systems are confirmed and revised. The light curves were modeled using the latest version of the Wilson-Devinney code and, as a result, we found that AF LMi (G3+G9) and CzeV188 (K0+K1) are W UMa-type contact binary systems belonging to the W subclass, showing a shallow degree of fill-out with components in good thermal contact. CRTS J073333.0+302556 is a detached binary system composed by a late dwarf (K8) and an M6 dwarf spectral type components. The asymmetries of the light curves were accounted for with a spot on the surface of one of the component. The absolute elements of the three objects were estimated.

引用

页码：123 / 135

页数：13

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