The CARMA-NRO Orion Survey
Abstract
We present the first results from a new, high resolution, CO(1-0), CO(1-0), and CO(1-0) molecular line survey of the Orion A cloud, hereafter referred to as the CARMA-NRO Orion Survey. CARMA observations have been combined with single-dish data from the Nobeyama 45m telescope to provide extended images at about 0.01 pc resolution, with a dynamic range of approximately 1200 in spatial scale. Here we describe the practical details of the data combination in uv space, including flux scale matching, the conversion of single dish data to visibilities, and joint deconvolution of single dish and interferometric data. A -variance analysis indicates that no artifacts are caused by combining data from the two instruments. Initial analysis of the data cubes, including moment maps, average spectra, channel maps, position-velocity diagrams, excitation temperature, column density, and line ratio maps provides evidence of complex and interesting structures such as filaments, bipolar outflows, shells, bubbles, and photo-eroded pillars. The implications for star formation processes are profound and follow-up scientific studies by the CARMA-NRO Orion team are now underway. We plan to make all the data products described here generally accessible; some are already available at https://dataverse.harvard.edu/dataverse/CARMA-NRO-Orion
Cite
@article{arxiv.1803.11522,
title = {The CARMA-NRO Orion Survey},
author = {Shuo Kong and Héctor G. Arce and Jesse R. Feddersen and John M. Carpenter and Fumitaka Nakamura and Yoshito Shimajiri and Andrea Isella and Volker Ossenkopf-Okada and Anneila I. Sargent and Álvaro Sánchez-Monge and Sümeyye T. Suri and Jens Kauffmann and Thushara Pillai and Jaime E. Pineda and Jin Koda and John Bally and Dariusz C. Lis and Paolo Padoan and Ralf Klessen and Steve Mairs and Alyssa Goodman and Paul Goldsmith and Peregrine McGehee and Peter Schilke and Peter J. Teuben and María José Maureira and Chihomi Hara and Adam Ginsburg and Blakesley Burkhart and Rowan J. Smith and Anika Schmiedeke and Jorge L. Pineda and Shun Ishii and Kazushige Sasaki and Ryohei Kawabe and Yumiko Urasawa and Shuri Oyamada and Yoshihiro Tanabe},
journal= {arXiv preprint arXiv:1803.11522},
year = {2018}
}
Comments
46 pages, 28 figures, 2 tables, accepted by ApJS