Identification of new hot subdwarf binary systems by means of Virtual Observatory tools
Authors/Creators
- 1. University of Vigo
- 2. Centro Astrobiología (CSIC-INTA) Madrid AND Spanish Virtual Observatory
- 3. University of A Coruña
Description
The estimation of the binary fraction of hot subdwarfs is key to shed light on the different evolution scenarios proposed to explain the loss of the hydrogen envelope during the red giant branch phase. We analyse the spectral energy distribution of the hot subdwarfs included in a recent and comprehensive catalogue with the aim of identifying companions to hot subdwarf stars. Our methodology, based on VO tools, shows a performance superior to the photometric criteria used in that study, identifying both a significant number of single objects wrongly classified as binaries, together with new binary findings. Effective temperatures, luminosities and radii were newly computed for 192 singles and 42 binaries, and a VO accessible database was created to assist further eventual spectroscopic analyses. The results obtained this way will be used as a reference for a forthcoming work where we aim to generalize binary and single hot subdwarf massive classification using Artificial lntelligence-based techniques.
Files
poster_A3_HotsdsVO_SEA.pdf
Files
(539.0 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:eb7a914342e48c81e80195f2b5c35020
|
539.0 kB | Preview Download |