The Population of Compact Radio Sources in the Orion Nebula Cluster
- Autor(en)
- Jan Forbrich, V. M. Rivilla, Karl M. Menten, Mark J. Reid, C. J. Chandler, Stefan Meingast
- Abstrakt
We present a deep centimeter-wavelength catalog of the Orion Nebula Cluster (ONC), based on a 30 hr single-pointing observation with the Karl G. Jansky Very Large Array in its high-resolution A-configuration using two 1 GHz bands centered at 4.7 and 7.3 GHz. A total of 556 compact sources were detected in a map with a nominal rms noise of 3 μJy bm-1, limited by complex source structure and the primary beam response. Compared to previous catalogs, our detections increase the sample of known compact radio sources in the ONC by more than a factor of seven. The new data show complex emission on a wide range of spatial scales. Following a preliminary correction for the wideband primary-beam response, we determine radio spectral indices for 170 sources whose index uncertainties are less than ±0.5. We compare the radio to the X-ray and near-infrared point-source populations, noting similarities and differences.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Harvard-Smithsonian Center for Astrophysics, INAF - Osservatorio Astrofisico di Arcetri, Spanish National Research Council (CSIC), Max-Planck-Institut für Radioastronomie, National Radio Astronomy Observatory Socorro
- Journal
- The Astrophysical Journal
- Band
- 822
- Anzahl der Seiten
- 13
- ISSN
- 0004-637X
- DOI
- https://doi.org/10.3847/0004-637X/822/2/93
- Publikationsdatum
- 05-2016
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103003 Astronomie, 103004 Astrophysik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Astronomy and Astrophysics, Space and Planetary Science
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/the-population-of-compact-radio-sources-in-the-orion-nebula-cluster(7b1c8d08-b921-49aa-83e3-ba99f246c5dc).html