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Disentangling the Environment of the FU Orionis Candidate HBC 722 with Herschel

Green, Joel D. and Evans, Neal J., II and Kóspál, Ágnes and van Kempen, Tim A. and Herczeg, Gregory J. and Quanz, Sascha P. and Henning, Thomas and Lee, Jeong-Eun and Dunham, Michael M. and Meeus, Gwendolyn and Bouwman, Jeroen and van Dishoeck, Ewine F. and Chen, Jo-Hsin and Güdel, Manuel and Skinner, Stephen L. and Merello, Manuel and Pooley, David and Rebull, Luisa M. and Guieu, Sylvain (2011) Disentangling the Environment of the FU Orionis Candidate HBC 722 with Herschel. Astrophysical Journal Letters, 731 (2). Art. No. L25. ISSN 2041-8205.

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We analyze the submillimeter emission surrounding the new FU Orionis-type object, HBC 722. We present the first epoch of observations of the active environs of HBC 722, with imaging and spectroscopy from PACS, SPIRE, and HIFI on board the Herschel Space Observatory, as well as CO J = 2-1 and 350 μm imaging (SHARC-II) with the Caltech Submillimeter Observatory. The primary source of submillimeter continuum emission in the region—2MASS 20581767+4353310—is located 16'' south-southeast of the optical flaring source while the optical and near-infrared emission is dominated by HBC 722. A bipolar outflow extends over HBC 722; the most likely driver is the submillimeter source. We detect warm (100 K) and hot (246 K) CO emission in the surrounding region, evidence of outflow-driven heating in the vicinity. The region around HBC 722 itself shows little evidence of heating driven by the new outbursting source itself.

Item Type:Article
Related URLs:
URLURL TypeDescription
Evans, Neal J., II0000-0001-5175-1777
Herczeg, Gregory J.0000-0002-7154-6065
Quanz, Sascha P.0000-0003-3829-7412
Lee, Jeong-Eun0000-0003-3119-2087
Dunham, Michael M.0000-0003-0749-9505
van Dishoeck, Ewine F.0000-0001-7591-1907
Pooley, David0000-0003-4897-7833
Rebull, Luisa M.0000-0001-6381-515X
Additional Information:© 2011. The American Astronomical Society. Received 21 February 2011, accepted for publication 9 March 2011, Published 24 March 2011. The authors acknowledge the Herschel Director, G. L. Pilbratt, for the timely approval and execution of this Target of Opportunity program; Amanda Heiderman for providing CSO data; Paul Harvey, Michelle Rascati, and the HSC and NHSC Helpdesk for data processing and analysis assistance, and Colette Salyk and Geoff Blake for helpful discussions. The research of Á.K. is supported by the Netherlands Organisation for Scientific Research. The research of J.-E.L. is supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (no. 2010-0008704). This work is based in part on data obtained as part of the UKIRT Infrared Deep Sky Survey.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
National Research Foundation of KoreaUNSPECIFIED
Ministry of Education, Science and Technology (Korea)2010-0008704
Subject Keywords:ISM: jets and outflows, stars: individual: HBC 722, stars: pre-main sequence, stars: variables: T Tauri, Herbig Ae/Be, submillimeter: ISM
Issue or Number:2
Record Number:CaltechAUTHORS:20150817-124810263
Persistent URL:
Official Citation:Joel D. Green et al. 2011 ApJ 731 L25
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59619
Deposited By: Luisa Rebull
Deposited On:18 Aug 2015 19:12
Last Modified:01 Nov 2019 23:33

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