Binarity of B[e] and B supergiants using Proper Motion anomaly with Gaia data
Year: 2024
Type: article
Abstract: A near–complete sample of stars with the B[e] phenomenon, and B supergiants is compiled and placed in the Hertzsprung–Russell (HR) diagram, using data from the Gaia Data Release 3 (DR3) catalog to estimate their luminosities. By comparing the position and proper motions in different Gaia Data Releases (DR2 and DR3), we search for stars that may exhibit a Proper Motion Anomaly (PMa). The PMa has been studied before as an indicator of binarity and can resolve binaries with a separation of much less than an arcsec. This work analyzes the binary fraction in B[e] and B supergiant stars, alongside their location in the HR diagram.
Authors: Fernandez, Melina Carla, Cárdenas, Silvina Belén, Oudmaijer, René, Dodd, Jonathan
Institutions: Universidad Nacional de La Plata, University of Leeds
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7104013846
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