MICROWAVE OBSERVATIONS OF EDGE-ON PROTOPLANETARY DISKS: PROGRAM OVERVIEW AND FIRST RESULTS
- Center for Astrophysics and Space Sciences, University of California, San Diego, CA 92093-0424 (United States)
- Astronomy Department, 601 Campbell Hall, University of California, Berkeley, CA 94720-3411 (United States)
- Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS-66, Cambridge, MA 02138 (United States)
- Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Ave., Chicago, IL 60637 (United States)
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21231 (United States)
- Centre for Astrophysics and Supercomputing, Swinburne University, P.O. Box 218, Hawthorn, VIC 3122 (Australia)
- UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, BP 53, 38041 Grenoble Cedex 9 (France)
- Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-900, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States)
We are undertaking a multi-frequency Expanded Very Large Array (EVLA) survey of edge-on protoplanetary disks to probe the growth of solids in each disk, sedimentation of such material into the disk midplane, and the connection of these phenomena to the planet formation process. The projection of edge-on disk systems along our line of sight enables a study of the vertical stratification of large grains with fewer model dependencies than would be required for disks that are more face-on. Robust studies of the spatial distribution of grains up to {approx}1 cm in size are possible with the wavelength range and sensitivity of the EVLA. In this contribution, we describe target selection and observational strategies. First results concerning the Class 0 source IRAS 04368+2557 (L1527 IRS) are presented, including a study of this source's 8.46 GHz continuum variability over short and long time baselines and an indication that its protoplanetary disk may have a dearth of pebble-sized grains.
- OSTI ID:
- 21565473
- Journal Information:
- Astrophysical Journal Letters, Vol. 739, Issue 1; Other Information: DOI: 10.1088/2041-8205/739/1/L7; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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