Bibcode
Cheung, E.; Stark, David V.; Huang, Song; Rubin, Kate H. R.; Lin, Lihwai; Tremonti, Christy; Zhang, Kai; Yan, Renbin; Bizyaev, Dmitry; Boquien, Médéric; Brownstein, Joel R.; Drory, Niv; Gelfand, Joseph D.; Knapen, J. H.; Maiolino, Roberto; Malanushenko, Olena; Masters, Karen L.; Merrifield, Michael R.; Pace, Zach; Pan, Kaike; Riffel, Rogemar A.; Roman-Lopes, Alexandre; Rujopakarn, Wiphu; Schneider, Donald P.; Stott, John P.; Thomas, Daniel; Weijmans, Anne-Marie
Bibliographical reference
The Astrophysical Journal, Volume 832, Issue 2, article id. 182, 10 pp. (2016).
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12
2016
Journal
Citations
11
Refereed citations
10
Description
The nature of warm, ionized gas outside of galaxies may illuminate
several key galaxy evolutionary processes. A serendipitous observation
by the MaNGA survey has revealed a large, asymmetric Hα complex
with no optical counterpart that extends ≈8″ (≈6.3 kpc)
beyond the effective radius of a dusty, starbursting galaxy. This
Hα extension is approximately three times the effective radius of
the host galaxy and displays a tail-like morphology. We analyze its
gas-phase metallicities, gaseous kinematics, and emission-line ratios
and discuss whether this Hα extension could be diffuse ionized
gas, a gas accretion event, or something else. We find that this warm,
ionized gas structure is most consistent with gas accretion through
recycled wind material, which could be an important process that
regulates the low-mass end of the galaxy stellar mass function.