典型文献
Photometric and Spectroscopic Analysis of LBV Candidate J004341.84+411112.0 in M31
文献摘要：
We study Luminous Blue Variable(LBV)candidate J004341.84+411112.0 in the Andromeda galaxy.We present optical spectra of the object obtained with the 6 m telescope of BTA SAO RAS.The candidate shows typical LBV features in its spectra:broad and strong hydrogen lines and the He I lines with P Cygni profiles.Its remarkable spectral resemblance to the well known LBV P Cygni suggests a common nature of the objects and supports LBV classification of J004341.84+411112.0.We estimate the temperature,reddening,radius and luminosity of the star using its spectral energy distribution.Obtained bolometric luminosity of the candidate(Mbol=-10.41±0.12 mag)is quite similar to those of known LBV stars in the Andromeda galaxy.We analyzed a ten year light curve of the object in R filter.The candidate demonstrates photometric variations of the order of 0.4 mag,with an overall brightness increasing trend ΔR＞0.1 mag.Therewith,the corresponding color variations of the object are fully consistent with LBV behavior when a star become cooler and brighter in the optical spectral range with a nearly constant bolometric luminosity.LBV-type variability of the object,similarity of its spectrum and estimated luminosity to those of known LB Vs allow us to classify J004341.84+411112.0 as an LBV.
文献关键词：
中图分类号：
作者姓名：
A.Sarkisvan;O.Sholukhova;S.Fabrika;A.Valeev;A.Valcheva;P.Nedialkov;A.Tatarnikov
作者机构：
Special Astrophysical Observatory of Russian Academy of Sciences,Niznij Arkhyz 369167,Karachai-Cherkessia,Russia;Crimean Astrophysical Observatory,Russian Academy of Sciences,Nauchnyi 298409,Russia;Department of Astronomy,Sofia University,5 J.Bourchier Blvd,Sofia 1164,Bulgaria;Sternberg Astronomical Institute,Moscow M.V.Lomonosov State University,Universitetskiy Prospekt 13,Moscow 119234,Russia
文献出处：
引用格式：
[1]A.Sarkisvan;O.Sholukhova;S.Fabrika;A.Valeev;A.Valcheva;P.Nedialkov;A.Tatarnikov-.Photometric and Spectroscopic Analysis of LBV Candidate J004341.84+411112.0 in M31)[J].天文和天体物理学研究,2022(01):237-244
A类：
J004341,84+411112,Luminous,Andromeda,Cygni,reddening,bolometric,Mbol,Therewith
B类：
Photometric,Spectroscopic,Analysis,LBV,Candidate,M31,We,study,Blue,Variable,candidate,galaxy,present,optical,obtained,telescope,BTA,SAO,RAS,shows,typical,features,its,broad,strong,hydrogen,lines,He,profiles,Its,remarkable,spectral,resemblance,well,known,suggests,common,nature,objects,supports,classification,temperature,radius,luminosity,using,energy,distribution,Obtained,mag,quite,those,stars,analyzed,year,light,curve,filter,demonstrates,photometric,variations,order,overall,brightness,increasing,trend,corresponding,color,are,fully,consistent,behavior,when,become,cooler,brighter,range,nearly,constant,type,variability,similarity,spectrum,estimated,Vs,allow,classify
AB值：
0.446725
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