The Galactic O-Star Spectroscopic (GOSSS) and Northern Massive Dim Stars (NoMaDS) Surveys, the Galactic O-Star Catalog (GOSC), and Marxist Ghost Buster (MGB)

TL;DR

This paper reviews ongoing surveys of massive O-type stars, introduces the Galactic O-Star Catalog, and presents Marxist Ghost Buster, a new spectral classification tool using spectral libraries.

Contribution

It presents results from the GOSSS and NoMaDS surveys, updates on the Galactic O-Star Catalog, and introduces the Marxist Ghost Buster spectral classification code.

Findings

Enhanced spectroscopic data for massive O stars

Development of the Galactic O-Star Catalog

Introduction of the Marxist Ghost Buster classification tool

Abstract

There are several ongoing massive-star (mostly of spectral type O) surveys that are significantly increasing the quality and quantity of the spectroscopic information about these objects. Here we discuss and present results for two of them, GOSSS and NoMaDS. We also discuss recent and future developments on the Galactic O-Star Catalog and announce the upcoming availability of Marxist Ghost Buster, an IDL code that attacks spectral classification (hence the name) by using an interactive comparison with spectral libraries.