The Galactic O-Star Catalog (GOSC) and the Galactic O-Star Spectroscopic Survey (GOSSS): current status

TL;DR

This paper updates the Galactic O-Star Catalog and Spectroscopic Survey, detailing new data, tools, and observational setups, advancing the classification and understanding of O-type stars in our galaxy.

Contribution

It provides recent updates on GOSC and GOSSS, including new spectral data, observational setups, and classification tools, enhancing the study of Galactic O stars.

Findings

Over 1000 targets observed since 2014

Addition of four new observational setups

Updated spectral classification tools and standards

Abstract

We present the updates of the Galactic O-Star Catalog (GOSC) that we have undertaken in the last two years: new spectral types, more objects, additional information, and coordination with CDS. We also present updates for the Galactic O-Star Spectroscopic Survey (GOSSS). A new paper (GOSSS-III) has been published and ~1000 targets have been observed since 2014. Four new setups have been added to our lineup and for two of them we have already obtained over 100 spectra: with OSIRIS at the 10.4 m GTC we are observing northern dim stars and with FRODOspec at the 2.0 m Liverpool Telescope we are observing northern bright stars. Finally, we also make available new versions of MGB, the spectral classification tool associated with the project, and of the GOSSS grid of spectroscopic standards.