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Title: LITTLE THINGS

Abstract

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{sup -1} per channel), high spectral resolution ({<=}2.6 km s{sup -1}), and high angular resolution ({approx}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 H{alpha} 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 setsmore » are available online.« less

Authors:
; ; ;  [1]; ; ;  [2]; ;  [3]; ; ;  [4];  [5];  [6];  [7]; ;  [8]
  1. Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001 (United States)
  2. Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB (United Kingdom)
  3. Department of Physics, Florida International University, CP 204, 11200 SW 8th Street, Miami, FL 33199 (United States)
  4. Physics Department, New Mexico Institute of Mining and Technology, Socorro, NM 87801 (United States)
  5. IBM T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, NY 10598 (United States)
  6. International Centre for Radio Astronomy Research (ICRAR), The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009 (Australia)
  7. National Radio Astronomy Observatory, 1003 Lopezville Road, Socorro, NM 87801 (United States)
  8. Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
22089822
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 144; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; CALIBRATION; DATA ACQUISITION; DENSITY; GALAXIES; HYDROGEN; IMAGES; LUMINOSITY; MAPPING; RADIOASTRONOMY; RESOLUTION; SENSITIVITY; STAR EVOLUTION; STARS; VELOCITY; WAVELENGTHS

Citation Formats

Hunter, Deidre A., Herrmann, Kimberly A., Johnson, Megan, Zhang Hongxin, Ficut-Vicas, Dana, Brinks, Elias, Heesen, Volker, Ashley, Trisha, Simpson, Caroline E., Cigan, Phil, Westpfahl, David J., Young, Lisa M., Elmegreen, Bruce G., Oh, Se-Heon, Rupen, Michael P., Schruba, Andreas, and Walter, Fabian. LITTLE THINGS. United States: N. p., 2012. Web. doi:10.1088/0004-6256/144/5/134.
Hunter, Deidre A., Herrmann, Kimberly A., Johnson, Megan, Zhang Hongxin, Ficut-Vicas, Dana, Brinks, Elias, Heesen, Volker, Ashley, Trisha, Simpson, Caroline E., Cigan, Phil, Westpfahl, David J., Young, Lisa M., Elmegreen, Bruce G., Oh, Se-Heon, Rupen, Michael P., Schruba, Andreas, & Walter, Fabian. LITTLE THINGS. United States. doi:10.1088/0004-6256/144/5/134.
Hunter, Deidre A., Herrmann, Kimberly A., Johnson, Megan, Zhang Hongxin, Ficut-Vicas, Dana, Brinks, Elias, Heesen, Volker, Ashley, Trisha, Simpson, Caroline E., Cigan, Phil, Westpfahl, David J., Young, Lisa M., Elmegreen, Bruce G., Oh, Se-Heon, Rupen, Michael P., Schruba, Andreas, and Walter, Fabian. Thu . "LITTLE THINGS". United States. doi:10.1088/0004-6256/144/5/134.
@article{osti_22089822,
title = {LITTLE THINGS},
author = {Hunter, Deidre A. and Herrmann, Kimberly A. and Johnson, Megan and Zhang Hongxin and Ficut-Vicas, Dana and Brinks, Elias and Heesen, Volker and Ashley, Trisha and Simpson, Caroline E. and Cigan, Phil and Westpfahl, David J. and Young, Lisa M. and Elmegreen, Bruce G. and Oh, Se-Heon and Rupen, Michael P. and Schruba, Andreas and Walter, Fabian},
abstractNote = {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{sup -1} per channel), high spectral resolution ({<=}2.6 km s{sup -1}), and high angular resolution ({approx}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 H{alpha} 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.},
doi = {10.1088/0004-6256/144/5/134},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 5,
volume = 144,
place = {United States},
year = {2012},
month = {11}
}