The Gould's Belt very large array survey. III. The Orion region

Journal Article · Sun Jul 20 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/790/1/49· OSTI ID:22365585

Kounkel, Marina; Hartmann, Lee ^[1]; Loinard, Laurent; Ortiz-León, Gisela N.; Rodríguez, Luis F.; Pech, Gerardo; Rivera, Juana L. ^[2]; Mioduszewski, Amy J. ^[3]; Dzib, Sergio A. ^[4]; Torres, Rosa M. ^[5]; Boden, Andrew F. ^[6]; Evans, II, Neal J. ^[7]; Briceño, Cesar ^[8]; Tobin, John ^[9]

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1. Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109 (United States)
2. Centro de Radiostronomía y Astrofísica, Universidad Nacional Autónoma de Mexico, Morelia 58089 (Mexico)
3. National Radio Astronomy Observatory, 1003 Lopezville Road, Socorro, NM 87801 (United States)
4. Max Planck Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn (Germany)
5. Instituto de Astronomía y Meteorología, Universidad de Guadalajara, Avenida Vallarta No. 2602, Col. Arcos Vallarta, CP 44130, Guadalajara, Jalisco (Mexico)
6. Division of Physics, Math and Astronomy, California Institute of Technology, 1200 E California Blvd., Pasadena, CA 91125 (United States)
7. Department of Astronomy, The University of Texas at Austin, 1 University Station, C1400, Austin, TX 78712 (United States)
8. Cerro Tololo Interamerican Observatory, Casilla 603, La Serena (Chile)
9. National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States)

We present results from a high-sensitivity (60 μJy), large-scale (2.26 deg{sup 2}) survey obtained with the Karl G. Jansky Very Large Array as part of the Gould's Belt Survey program. We detected 374 and 354 sources at 4.5 and 7.5 GHz, respectively. Of these, 148 are associated with previously known young stellar objects (YSOs). Another 86 sources previously unclassified at either optical or infrared wavelengths exhibit radio properties that are consistent with those of young stars. The overall properties of our sources at radio wavelengths such as their variability and radio to X-ray luminosity relation are consistent with previous results from the Gould's Belt Survey. Our detections provide target lists for follow-up Very Long Baseline Array radio observations to determine their distances as YSOs are located in regions of high nebulosity and extinction, making it difficult to measure optical parallaxes.

• OSTI ID: 22365585
• Journal Information: Astrophysical Journal, Vol. 790, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DETECTION
DISTANCE
LUMINOSITY
MAGNETIC FIELDS
SENSITIVITY
STARS
X RADIATION