SIMBAD references

2020AJ....160...66P - Astron. J., 160, 66-66 (2020/August-0)

A catalog of holes and shells in the interstellar medium of the LITTLE THINGS dwarf galaxies.


Abstract (from CDS):

We present a catalog of holes and shells in the neutral atomic hydrogen (H I) of 41 gas-rich dwarf galaxies in LITTLE THINGS (Local Irregulars That Trace Luminosity Extremes, The H I Nearby Galaxy Survey). We analyzed their properties as part of an investigation into the relation between star formation and structures and kinematics in the H I of small galaxies. We confirmed 306 holes between 38 pc (our resolution limit) and 2.3 kpc, with expansion velocities up to 30 km s–1. The global star formation rates (SFRs) measured by Hα and far-UV (FUV) emission are consistent with those estimated from the energy required to create the cataloged holes in our sample. Although we found no obvious correlation between global SFRs and the H I surface and volume porosities of our sample, two of the four galaxies with the lowest porosity and the two galaxies with the highest porosity have no recent star formation as measured by Hα and FUV emission.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Dwarf irregular galaxies - HI shells - Interstellar medium - Star formation

VizieR on-line data: <Available at CDS (J/AJ/160/66): table1.dat tableb1-b38.dat>

Nomenclature: Table B1: [PSB2020] CVnIdwA 1 N=1. Tables B2-B23: [PSB2020] DDO NNN NN N=197. Table B24: [PSB2020] F564-V3 N (Nos 1-8). Tables B25-B26: [PSB2020] Haro NN N N=3. Tables B27-B28: [PSB2020] IC NNNN NN N=31. Table B29: [PSB2020] LGS 3 N (Nos 1-7). Table B30: [PSB2020] M81dwA NN (Nos 1-10). Table B31: [PSB2020] Mrk 178 1 N=1. Tables B32-B35: [PSB2020] NGC NNNN NN N=40 Table B36: [PSB2020] SagDIG 1 N=1. Table B37: [PBS2020] UGC 8508 N (Nos 1-3). Table B38: [PBS2020] WLM N (Nos 1-4).

Simbad objects: 362

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