Evidence for coupling of evolved star atmospheres and spiral arms of the Milky Way. Issue 1 (5th May 2020)

• Record Type: Journal Article
• Authors: Gorski, Mark D; Barmby, Pauline
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 495:Issue 1(2020)
• Page Start: 726
• Page End: 733
• Publication Date: 2020-05-05
• Subjects: masers -- parallaxes -- stars: AGB and post-AGB -- Galaxy: structure; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/staa1187
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: It is imperative to map the strength and distribution of feedback in galaxies to understand how feedback affects galactic ecosystems. H2 O masers act as indicators of energy injection into the interstellar medium. Our goal is to measure the strength and distribution of feedback traced by water masers in the Milky Way. We identify optical counterparts to H2 O masers discovered by the HOPS survey. The distribution and luminosities of H2 O masers in the Milky Way are determined using parallax measurements derived from the second Gaia Data Release. We provide evidence of a correlation between evolved stars, as traced by H2 O masers, and the spiral structure of the Milky Way, suggesting a link between evolved stars and the Galactic environment.