TY - JOUR
T1 - Little things
AU - Hunter, Deidre A.
AU - Ficut-Vicas, Dana
AU - Ashley, Trisha
AU - Brinks, Elias
AU - Cigan, Phil
AU - Elmegreen, Bruce G.
AU - Heesen, Volker
AU - Herrmann, Kimberly A.
AU - Johnson, Megan
AU - Oh, Se Heon
AU - Rupen, Michael P.
AU - Schruba, Andreas
AU - Simpson, Caroline E.
AU - Walter, Fabian
AU - Westpfahl, David J.
AU - Young, Lisa M.
AU - Zhang, Hong Xin
PY - 2012/11
Y1 - 2012/11
N2 - We present LITTLE THINGS (Local Irregulars That Trace Luminosity Extremes, The H I Nearby Galaxy Survey), which is aimed at determining what drives star formation in dwarf galaxies. This is a multi-wavelength survey of 37 dwarf irregular and 4 blue compact dwarf galaxies that is centered around H I-line data obtained with the National Radio Astronomy Observatory (NRAO) Very Large Array (VLA). The H I-line data are characterized by high sensitivity (≤1.1 mJy beam-1 per channel), high spectral resolution (≤2.6km s -1), and high angular resolution (∼6″). The LITTLE THINGS sample contains dwarf galaxies that are relatively nearby (≤10.3 Mpc; 6″ is ≤300pc), that were known to contain atomic hydrogen, the fuel for star formation, and that cover a large range in dwarf galactic properties. We describe our VLA data acquisition, calibration, and mapping procedures, as well as H I map characteristics, and show channel maps, moment maps, velocity-flux profiles, and surface gas density profiles. In addition to the H I data we have GALEX UV and ground-based UBV and Hα images for most of the galaxies, and JHK images for some. Spitzer mid-IR images are available for many of the galaxies as well. These data sets are available online.
AB - We present LITTLE THINGS (Local Irregulars That Trace Luminosity Extremes, The H I Nearby Galaxy Survey), which is aimed at determining what drives star formation in dwarf galaxies. This is a multi-wavelength survey of 37 dwarf irregular and 4 blue compact dwarf galaxies that is centered around H I-line data obtained with the National Radio Astronomy Observatory (NRAO) Very Large Array (VLA). The H I-line data are characterized by high sensitivity (≤1.1 mJy beam-1 per channel), high spectral resolution (≤2.6km s -1), and high angular resolution (∼6″). The LITTLE THINGS sample contains dwarf galaxies that are relatively nearby (≤10.3 Mpc; 6″ is ≤300pc), that were known to contain atomic hydrogen, the fuel for star formation, and that cover a large range in dwarf galactic properties. We describe our VLA data acquisition, calibration, and mapping procedures, as well as H I map characteristics, and show channel maps, moment maps, velocity-flux profiles, and surface gas density profiles. In addition to the H I data we have GALEX UV and ground-based UBV and Hα images for most of the galaxies, and JHK images for some. Spitzer mid-IR images are available for many of the galaxies as well. These data sets are available online.
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U2 - 10.1088/0004-6256/144/5/134
DO - 10.1088/0004-6256/144/5/134
M3 - Article
AN - SCOPUS:84867302890
SN - 0004-6256
VL - 144
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 134
ER -