WISE Photometry of Galaxies within 10 Mpc

Le résumé fourni par la source

Abstract For photometry of galaxies in the infrared that extend to very low surface brightnesses, it is necessary to observe with telescopes in space. The Wide-field Infrared Survey Explorer (WISE) and NEOWISE provide sensitive all-sky access to mid-infrared flux from galaxies at 3.4 μ m (W1) and 4.6 μ m (W2) bands. This study is complemented by the availability of accurate tip of the red giant branch distances for a large fraction of the targets. In this work, photometry is assembled on a complete volume-limited sample of galaxies between 1 and 10 Mpc brighter than absolute magnitude −13 in the W1 band. Stellar masses are inferred from W1 fluxes and measured distances. While most of the galaxies are dwarfs, most of the stellar mass is concentrated in a small number of giants.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.