Carbon star CGCS 673 identified as a semi-regular variable star

作     者：Stephen M.Brincat Charles Galdies Kevin Hills Stephen M. Brincat;Charles Galdies;Kevin Hills

作者机构：Flarestar Observatory(MPC 171)Fl.5/BGeorge Tayar StreetSan GwannSGN 3160Malta Institute of Earth SystemsUniversity of MaltaMsidaMSD 2080Malta Tacande Observatory(La PalmaSpain)c/o 4 Grange DriveHartfordCheshire CW83AEUK 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2020年第20卷第11期

页      面：235-238页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

基　　金：This research was made possible through the use of the AAVSO Photometric All-Sky Survey(APASS) funded by the Robert Martin Ayers Sciences Fund and NSF AST-1412587. 

主　　题：techniques photometric stars variables semi-regular variable stars individual CGCS 

摘      要：This study reports that the carbon star CGCS 673 is a semi-regular(SR)variable star with a period of 135 d and an amplitude of 0.18mag in the V-band.The light curve obtained by this study correlates well with the SR classification as the photometric data obtained show noticeable periodicity in the light changes of CGCS 673 that is occasionally interrupted by a period of irregular variability.The derived period and colour index obtained from our data and those from professional databases indicate that the attributes of this star fall within the parameters of the SR class of variable stars.Following our notification of the discovery that this star is a variable source,CGCS 673 has received the AAVSO Unique Identifier of(AAVSO UID)000-BMZ-492.