Photometric and Spectroscopic Study of Two Low Mass Ratio Contact Binary Systems:CRTS J225828.7-121122 and CRTSJ030053.5+230139  

作　　者：Surjit S.Wadhwa Jelena Petrović Nick F.H.Tothill Ain Y.De Horta Miroslav D.Filipović Gojko Djurašević 

机构地区：[1]School of Science,Western Sydney University,Locked Bag 1797,Penrith,NSW 2751,Australia [2]Astronomical Observatory,Volgina 7,11060 Belgrade,Serbia

出　　处：《Research in Astronomy and Astrophysics》2023年第11期1-6,共6页天文和天体物理学研究（英文版）

基　　金：funded by MCIN/AEI/10.13039/501100011033/through grant PID2020-112949GB-100;partially updated by using funding from the European Union's Horizon2020 Research and Innovation Programme,under grant Agreement No.776403(EXOPLANETS-A);financial support of the Ministry of Education,Science and Technological Development of the Republic of Serbia through contract No.451-03-9/2021-14/200002。

摘　　要：The study reports photometric and spectroscopic observations of two recently recognized contact binary systems.Both systems show total eclipses and analysis of the light curves indicates both have very low mass ratios of less than 0.3.We derive absolute parameters from color and distance based calibrations and show that,although both have low mass ratios,they are likely to be in a stable orbit and unlikely to merge.In other respects,both systems have characteristics similar to other contact binaries with the secondary larger and brighter than their main sequence counterparts and we also find that the secondary is considerably denser than the primary in both systems.

关 键 词：(stars:)binaries:eclipsing stars:mass-loss techniques:photometric 

分 类 号：P15[天文地球—天文学]