WISE view of RV Tauri stars : J/MNRAS/453/133

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Authors : Gezer I. orcid , Van Winckel H., Bozkurt Z. (hide) , Van Winckel H., Bozkurt Z. et..al

VizieR DOI : 10.26093/cds/vizier.74530133
Bibcode : 2015MNRAS.453..133G (ADS) (Simbad) (Objects)
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CDS Keywords : Stars, variable; Stars, population II; Photometry, infrared
UAT : Variable stars, Population II stars, Infrared photometry

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Inserted into VizieR : 27-Aug-2015
Last modification : 15-Aug-2024

The WISE view of RV Tauri stars. (2015)

Keywords : stars AGB and Post-AGB - circumstellar matter - stars: variables: Cepheids - infrared: stars

Abstract:We present a detailed study based on infrared (IR) photometry of all Galactic RV Tauri stars from the General Catalogue of Variable Stars (GCVS). RV Tauri stars are the brightest among the Population II Cepheids. They are thought to evolve away from the asymptotic giant branch (AGB) towards the white dwarf domain. IRAS detected several RV Tauri stars because of their large IR excesses and it was found that they occupy a specific region in the [12]-[25], [25]-[60] IRAS two-colour diagram. We used the all sky survey of Wide-field Infrared Survey Explorer to extend these studies and compare the IR properties of all RV Tauri stars in the GCVS with a selected sample of post-AGB objects with the goal to place the RV Tauri pulsators in the context ...(more)
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We have searched for Galactic RV Tauri stars from the General Catalogue of Variable Stars (GCVS). We used the all sky survey of WISE and full SED analysis to understand RV Tauri nature. We classified RV Tauri stars according to their positions in the WISE colour-colour diagram and SED types. We found that 153 Galactic RV Tauri variables exist in the GCVS. However, 25 of the 153 RV Tauri stars are probably misclassified objects because of their period range and spectral types. Remaining 128 RV Tauri stars are divided 3 groups with respect to our study. 29 of them are disc sources, 63 of them are non-IR sources and 34 of them have an unclear SED.
Ilknur Gezer, ilknur.gezer(at)ege.edu.tr

                


                

                    

                


                

                    

                


                

                    
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