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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 709678.0, MPI für Astronomie / Publikationen_mpia
Herbig-Haro objects and mid-infrared outflows in the Vela C molecular cloud
Authors:Zhang, M.; Wang, H.; Henning, T.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:The Astronomical Journal
Issue / Number:2
Start Page:id. 26 (27 pp)
Audience:Not Specified
Abstract / Description:We have performed a deep [S II] lambdalambda6717/6731 wide field Herbig-Haro (HH) object survey toward the Vela C molecular cloud with a sky coverage of about 2 deg2. In total, 18 new HH objects, HH 1090-1107, are discovered and the two previously known HH objects, HH 73-74, are also detected in our [S II] images. We also present an investigation of mid-infrared outflows in the Vela C molecular cloud using the Wide-field Infrared Survey Explorer images taken from AllWISE data release. Using the method suggested by Zhang & Wang, 11 extended green objects (EGOs) are identified to be the mid-infrared outflows, including 6 new mid-infrared outflows that have not been detected previously at other wavelengths and 5 mid-infrared counterparts of the HH objects detected in this work. Using the AllWISE Source Catalog and the source classification scheme suggested by Koenig et al., we have identified 56 young stellar object (YSO) candidates in the Vela C molecular cloud. The possible driving sources of the HH objects and EGOs are discussed based on the morphology of HH objects and EGOs and the locations of HH objects, EGOs and YSO candidates. Finally we associate 12 HH objects and 5 EGOs with 10 YSOs and YSO candidates. The median length of the outflows in Vela C is 0.35 pc and the outflows seem to be oriented randomly.
Free Keywords:Herbig-Haro objects; ISM: individual objects: Vela C; ISM: jets and outflows; stars: formation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.1088/0004-6256/148/2/26
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