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A New Catalogue of Galactic Red Supergiants for direct detection of episodic mass-loss events

M. Lauriano, F. Bocchino, M. Miceli, S. Orlando, O. Petruk, A. Pastorello, M. Limongi, A. Chieffi

Abstract

We present GalRSG, a new catalogue of 227 Galactic Red Supergiants in the Scutum-Crux region, which provides a nearly coeval and co-distant sample, target of a long-term, panchromatic, high-cadence photometric monitoring campaign aimed at detecting pre-supernova variability and luminous eruptively driven mass-loss events.

A New Catalogue of Galactic Red Supergiants for direct detection of episodic mass-loss events

Abstract

We present GalRSG, a new catalogue of 227 Galactic Red Supergiants in the Scutum-Crux region, which provides a nearly coeval and co-distant sample, target of a long-term, panchromatic, high-cadence photometric monitoring campaign aimed at detecting pre-supernova variability and luminous eruptively driven mass-loss events.
Paper Structure (3 sections, 2 figures, 1 table)

This paper contains 3 sections, 2 figures, 1 table.

Table of Contents

  1. Introduction
  2. The Catalogue
  3. Conclusions

Figures (2)

  • Figure 1: Light curve in $z$ band of star 2MASS J18443885-0326135, a candidate RSG in Alicante 7. Each colour corresponds to one of the three facilities monitoring the target in the ongoing campaign. The REM data (green points) appear fainter, likely due to an overestimation of the background or a photometric calibration issue, which will be addressed in a forthcoming paper.
  • Figure 2: Distribution of GalRSG stars in the Galactic plane, using the best photogeometric distances values from ref:bailerjones. The black curves trace the main spiral arms of the Milky Way, with the Sun (yellow circle) and the Galactic centre (red cross) shown for reference. The uncertainty is shown by the median value in the top-left part as a red bar.