STAR FORMATION RATE IN HOLMBERG IX DWARF GALAXY

Serbian Astronomical Journal

article

M. M. Andjeli´c¹ 

[1] Department of Astronomy, Faculty of Mathematics, University of Belgrade Studentski trg 16

关键词: galaxies: dwarf;    galaxies: ISM;    HII regions;    ISM: supernova remnants;    stars: formation;   

DOI  :  10.2298/SAJ1183071A

来源: Astronomical Observatory, Department of Astronomy, Belgrade

【 摘 要 】

In this paper we use previously determined Hα fluxes for dwarf galaxy Holmberg IX (Arbutina et al. 2009) to calculate star formation rate (SFR) in this galaxy. We discuss possible contaminations of Hα flux and, for the first time, we take into account optical emission from supernova remnants (SNRs) as a possible source of contamination of Hα flux. Derived SFR for Holmberg IX is 3.4 × 10−4M¯yr−1 . Our value is lower then in previous studies, due to luminous shock-heated source M&H 9-10, possible hypernova remnant, which we excluded from the total Hα flux in our calculation of SFR.

【 授权许可】

CC BY-NC-ND