A dataset provided by the European Space Agency

Name OT2_jtobin_2
Title Characterizing the Energetics of the Youngest Protostars: PACS Spectroscopy of Herschel-Identified Extreme Class 0 objects in Orion
URL

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DOI 10.5270/esa-b9y6h5z
Author tobin, j.
Description We propose to observe a sample of nine very red protostars serendipitously identified in PACS observations for the Herschel Orion Protostar Survey (HOPS). In contrast to the known Orion protostars targeted in HOPS, the new sources are undetected or very faint in Spitzer 24 micron imaging of Orion. They are redder than the known Orion Class 0 protostars, and appear similar to the most extreme Class 0 objects known. These objects are likely to be in a very early and short lived stage of protostellar evolution. With this sample, we aim to determine if the youngest protostars begin their lives in a violent energetic phase or in a more quiescent manner, slowly building their accretion and outflow power. To do this, we propose PACS Range Spectroscopy between 70 and 200 microns, observing the CO and H2O lines, and line spectroscopy centered on the 63 micron [OI] line. These far-IR cooling lines are powerful diagnostics of shock heating by outflows and radiant UV heating from accretion luminosity. Through a comparison with existing HOPS observations, these observations will be a unique window on the early evolution of outflows and accretion in protostars.
Publication Characterizing the Youngest Herschel-detected Protostars. II. Molecular Outflows from the Millimeter and the Far-infrared . Tobin John J. et al. . The Astrophysical Journal, Volume 831, Issue 1, article id. 36, 29 pp. (2016). . 831 . 10.3847\/0004-637X\/831\/1\/36 . 2016ApJ...831...36T ,
Instrument PACS_PacsRangeSpec_point, PACS_PacsLineSpec_point
Temporal Coverage 2012-08-14T11:05:25Z/2012-10-02T13:08:43Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-04-02T12:31:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-04-02T12:31:00Z, OT2_jtobin_2, SPG v14.2.0. https://doi.org/10.5270/esa-b9y6h5z