The Astrophysical Journal Supplement Series (Jan 2025)
The Karl G. Jansky Very Large Array Local Group L-Band Survey (LGLBS)
- Eric W. Koch,
- Adam K. Leroy,
- Erik W. Rosolowsky,
- Laura Chomiuk,
- Julianne J. Dalcanton,
- Nickolas M. Pingel,
- Sumit K. Sarbadhicary,
- Snežana Stanimirović,
- Fabian Walter,
- Haylee N. Archer,
- Alberto D. Bolatto,
- Michael P. Busch,
- Hongxing Chen,
- Ryan Chown,
- Harrisen Corbould,
- Serena A. Cronin,
- Jeremy Darling,
- Thomas Do,
- Jennifer Donovan Meyer,
- Cosima Eibensteiner,
- Deidre Hunter,
- Rémy Indebetouw,
- Preshanth Jagannathan,
- Amanda A. Kepley,
- Chang-Goo Kim,
- Shin-Jeong Kim,
- Timea O. Kovacs,
- Joshua Marvil,
- Eric J. Murphy,
- Claire E. Murray,
- Jürgen Ott,
- D.J. Pisano,
- Mary Putman,
- Daniel R. Rybarczyk,
- Julia Roman-Duval,
- Karin Sandstrom,
- Eva Schinnerer,
- Evan D. Skillman,
- Adam Smercina,
- Ioana Stelea,
- Jay Strader,
- Jiayi Sun,
- Devisree Tallapaneni,
- Elizabeth Tarantino,
- Vicente Villanueva,
- Daniel R. Weisz,
- Thomas G. Williams,
- Tony Wong
Affiliations
- Eric W. Koch
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, 02138 Cambridge, MA, USA ; [email protected]; National Radio Astronomy Observatory , 800 Bradbury SE, Suite 235, Albuquerque, NM 87106, USA
- Adam K. Leroy
- ORCiD
- Department of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USA; Center for Cosmology and Astroparticle Physics (CCAPP) , 191 West Woodruff Avenue, Columbus, OH 43210, USA
- Erik W. Rosolowsky
- ORCiD
- Department of Physics, University of Alberta , 4-183 CCIS, Edmonton, Alberta, T6G 2E1, Canada
- Laura Chomiuk
- ORCiD
- Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
- Julianne J. Dalcanton
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA; Department of Astronomy, Box 351580, University of Washington , Seattle, WA 98195, USA
- Nickolas M. Pingel
- ORCiD
- University of Wisconsin–Madison , Department of Astronomy, 475 N Charter Street, Madison, WI 53703, USA
- Sumit K. Sarbadhicary
- ORCiD
- Department of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USA; Center for Cosmology and Astroparticle Physics (CCAPP) , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Physics and Astronomy, The Johns Hopkins University , Baltimore, MD 21218, USA
- Snežana Stanimirović
- ORCiD
- University of Wisconsin–Madison , Department of Astronomy, 475 N Charter Street, Madison, WI 53703, USA
- Fabian Walter
- ORCiD
- Max-Planck-Institut für Astronomie , Königstuhl 17, 69117 Heidelberg, Germany
- Haylee N. Archer
- ORCiD
- School of Earth and Space Exploration, Arizona State University , Tempe, AZ 85287, USA; Lowell Observatory , 1400 W Mars Hill Road, Flagstaff, AZ 86001, USA
- Alberto D. Bolatto
- ORCiD
- Department of Astronomy and Joint Space-Science Institute, University of Maryland , College Park, MD 20854, USA
- Michael P. Busch
- ORCiD
- Department of Astronomy & Astrophysics, University of California , San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
- Hongxing Chen
- ORCiD
- University of Wisconsin–Madison , Department of Astronomy, 475 N Charter Street, Madison, WI 53703, USA
- Ryan Chown
- ORCiD
- Department of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USA
- Harrisen Corbould
- ORCiD
- Department of Physics, University of Alberta , 4-183 CCIS, Edmonton, Alberta, T6G 2E1, Canada
- Serena A. Cronin
- ORCiD
- Department of Astronomy, University of Maryland , College Park, MD 20854, USA
- Jeremy Darling
- ORCiD
- Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences, University of Colorado , 389 UCB, Boulder, CO 80309, USA
- Thomas Do
- ORCiD
- Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
- Jennifer Donovan Meyer
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
- Cosima Eibensteiner
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
- Deidre Hunter
- ORCiD
- Lowell Observatory , 1400 W Mars Hill Road, Flagstaff, AZ 86001, USA
- Rémy Indebetouw
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA; University of Virginia Astronomy Department , P.O. Box 400325, Charlottesville, VA, 22904, USA
- Preshanth Jagannathan
- ORCiD
- National Radio Astronomy Observatory , 1011 Lopezville Road, Socorro, NM 87801, USA
- Amanda A. Kepley
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
- Chang-Goo Kim
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08544, USA
- Shin-Jeong Kim
- ORCiD
- Research School of Astronomy and Astrophysics, The Australian National University , Canberra ACT 2611, Australia
- Timea O. Kovacs
- ORCiD
- Max-Planck-Institut für Astronomie , Königstuhl 17, 69117 Heidelberg, Germany
- Joshua Marvil
- ORCiD
- National Radio Astronomy Observatory , 1011 Lopezville Road, Socorro, NM 87801, USA
- Eric J. Murphy
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA
- Claire E. Murray
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA; The William H. Miller III Department of Physics & Astronomy, Bloomberg Center for Physics and Astronomy, Johns Hopkins University , 3400 N. Charles Street, Baltimore, MD 21218, USA
- Jürgen Ott
- ORCiD
- National Radio Astronomy Observatory , 1011 Lopezville Road, Socorro, NM 87801, USA
- D.J. Pisano
- ORCiD
- Department of Astronomy , University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
- Mary Putman
- ORCiD
- Department of Astronomy, Columbia University , New York, NY 10027, USA
- Daniel R. Rybarczyk
- ORCiD
- University of Wisconsin–Madison , Department of Astronomy, 475 N Charter Street, Madison, WI 53703, USA
- Julia Roman-Duval
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Karin Sandstrom
- ORCiD
- Department of Astronomy & Astrophysics, University of California , San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
- Eva Schinnerer
- ORCiD
- Max-Planck-Institut für Astronomie , Königstuhl 17, 69117 Heidelberg, Germany
- Evan D. Skillman
- ORCiD
- Minnesota Institute for Astrophysics, University of Minnesota , Minneapolis, MN 55455, USA
- Adam Smercina
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Ioana Stelea
- ORCiD
- University of Wisconsin–Madison , Department of Astronomy, 475 N Charter Street, Madison, WI 53703, USA
- Jay Strader
- ORCiD
- Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
- Jiayi Sun
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08544, USA
- Devisree Tallapaneni
- ORCiD
- Department of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USA
- Elizabeth Tarantino
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
- Vicente Villanueva
- ORCiD
- Departamento de Astronomía, Universidad de Concepción , Barrio Universitario, Concepción, Chile
- Daniel R. Weisz
- ORCiD
- Department of Astronomy, University of California , Berkeley, Berkeley, CA 94720, USA
- Thomas G. Williams
- ORCiD
- Subdepartment of Astrophysics, Department of Physics, University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Tony Wong
- ORCiD
- Department of Astronomy, University of Illinois , Urbana, IL 61801, USA
- DOI
- https://doi.org/10.3847/1538-4365/ade0ad
- Journal volume & issue
-
Vol. 279,
no. 2
p. 35
Abstract
We present the Local Group L -Band Survey, a Karl G. Jansky Very Large Array (VLA) survey producing the highest-quality 21 cm and 1–2 GHz radio continuum images to date, for the six VLA-accessible, star-forming, Local Group galaxies. Leveraging the VLA’s spectral multiplexing power, we simultaneously survey the 21 cm line at high 0.4 km s ^−1 velocity resolution, the 1–2 GHz polarized continuum, and four OH lines. For the massive spiral M31, the dwarf spiral M33, and the dwarf irregular galaxies NGC 6822, IC 10, IC 1613, and the Wolf–Lundmark–Melotte Galaxy, we use all four VLA configurations and the Green Bank Telescope to reach angular resolutions of <5″ (10–20 pc) for the 21 cm line with <10 ^20 cm ^−2 column density sensitivity, and even sharper views (<2″; 5–10 pc) of the continuum. Targeting these nearby galaxies ( D ≲ 1 Mpc) reveals a sharp, resolved view of the atomic gas, including 21 cm absorption, and continuum emission from supernova remnants and H ii regions. These data sets can be used to test theories of the abundance and formation of cold clouds, the driving and dissipation of interstellar turbulence, and the impact of feedback from massive stars and supernovae. Here, we describe the survey design and execution, scientific motivation, data processing, and quality assurance. We provide a first look at and publicly release the wide-field 21 cm H i data products for M31, M33, and four dwarf irregular targets in the survey, which represent some of the highest-physical-resolution 21 cm observations of any external galaxies beyond the LMC and SMC.
Keywords
