The molecular gas around the luminous blue variable star G24.73+0.69

Abstract

Aims: We study the molecular environment of the luminous blue variable star G24.73+0.69 to investigate the origin of the two infrared shells around this massive star and to determine its effects on the surrounding interstellar medium. Methods: We analyze the distribution of the molecular gas using the 13CO J=1-0 emission extracted from the Galactic Ring Survey. We use near- and mid-infrared data from 2MASS and GLIMPSE to identify the young stellar objects in the field. Results: We discover the molecular counterpart of the outer infrared shell around G24.73+0.69. The CO shell was probably blown by the stellar wind of the star mainly during its main sequence phase. We also find molecular gas that corresponds to the inner infrared shell, although its origin remains uncertain. We find seven young stellar objects upon the molecular material, whose birth might have been triggered by the stellar wind of the luminous blue variable star. We suggest that both G24.73+0.69 and the progenitor of the nearby supernova remnant G24.7+0.6 were formed from the same natal cloud and represent the most evolved members of a so far undetected cluster of other massive stars.

11 pages, 4 figures degraded to reduce file size. Accepted for publication in A&A

References in corpus (4)

• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• The empirical metallicity dependence of the mass-loss rate of O- and early B-type stars
• Modeling of the Vela complex including the Vela supernova remnant, the binary system gamma2 Velorum, and the Gum nebula
• Discovery of warm and dense molecular gas surrounding the ring nebula G79.29+0.46

Cited by in corpus (9)

• The 1st Fermi Lat Supernova Remnant Catalog
• New Distances to Four Supernova Remnants
• Revised Distances to 21 Supernova Remnants
• The interstellar medium and the massive stellar content toward the SNR G18.1-0.1 and neighboring HII regions
• Study of the luminous blue variable star candidate G26.47+0.02 and its environment
• Discovery of TeV $\gamma$-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC
• A Luminous Blue Variable Star Interacting with a Nearby Infrared Dark Cloud
• An interacting molecular cloud scenario for production of gamma-rays and neutrinos from MAGIC J1835-069, and MAGIC J1837-073
• Interaction of a high-mass X-ray binary with the interstellar medium through stellar wind. The case of GX 301-2