A new OSIRIS/GTC and IDS/INT spectroscopic survey of young stars in the sigma Orionis cluster
Abstract
The young σ Orionis cluster in the Ori OB 1b association is one of the most important clusters for understanding the stellar and substellar formation and evolution. In this work, we used 197 low-resolution optical spectra of 167 stars. We determined spectral types and measured Li I and Hα equivalent widths (EWs). We used Gaia DR2 astrometry together with youth features indicators from literature to derive the true membership to the cluster.
- Publication:
-
Highlights on Spanish Astrophysics X
- Pub Date:
- March 2019
- Bibcode:
- 2019hsax.conf..403D