TY - JOUR
T1 - Little Things
AU - Hunter, D. A.
AU - Ficut-Vicas, D.
AU - Ashley, T.
AU - Brinks, E.
AU - Cigan, P.
AU - Elmegreen, B. G.
AU - Heesen, V.
AU - Herrmann, K. A.
AU - Johnson, M.
AU - Oh, S.H.
AU - Rupen, M. P.
AU - Schruba, A.
AU - Simpson, C.E.
AU - Walter, F.
AU - Westpfahl, D. J.
AU - Young, L. M.
AU - Zhang, H.-X.
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 (≤2.6 km s–1), and high angular resolution (~6''). The LITTLE THINGS sample contains dwarf galaxies that are relatively nearby (≤10.3 Mpc; 6'' is ≤300 pc), 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 (≤2.6 km s–1), and high angular resolution (~6''). The LITTLE THINGS sample contains dwarf galaxies that are relatively nearby (≤10.3 Mpc; 6'' is ≤300 pc), 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
KW - galaxies: irregular, galaxies: ISM, galaxies: kinematics and dynamics, galaxies: star formation, galaxies: structure
U2 - 10.1088/0004-6256/144/5/134
DO - 10.1088/0004-6256/144/5/134
M3 - Article
SN - 0004-6256
VL - 144
JO - The Astronomical Journal
JF - The Astronomical Journal
IS - 5
M1 - 134
ER -