A dataset provided by the European Space Agency

Name OT2_abolatto_1
Title The Mass and Structure of Molecular Gas in the Small Magellanic Cloud and the Herschel Legacy at Low Metallicity
URL

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DOI 10.5270/esa-wyvn9pj
Author bolatto, a.
Description We propose a spectroscopic survey of the Small Magellanic Cloud (SMC) designed to measure the impact of metallicity on the interstellar medium and specifically to determine the mass and structure of molecular gas residing in a "CO-dark" phase. The SMC is the nearest truly low-metallicity, actively star-forming galaxy and shows the best evidence of any galaxy of being dominated by "CO-dark" H2 gas. This makes the SMC an absolutely unique target and the best source to study how the H2 reservoir, the relation between star formation and H2, and the relation between H2 and CO are affected by metallicity. These are key problems with far-reaching implications for the evolution of the star formation across cosmic time and the interpretation of high-redshift observations in the ALMA era. Our survey consists spectral mapping with FTS+PACS ([CII], [OI], [NII], [OIII]) of 5 regions selected to span a wide range in r^ant parameter space and enable a clean and precise measurement of the abundance of "CO-dark" molecular gas. This rich dataset will have lasting legacy value and address a key gap in the Herschel legacy, enabling studies in a wide range of other topics. Moreover, the coIs will publicly distribute the data products 18 months after the end of observations. The team have extensive leading expertise on these science topics, as well as modeling and data reduction.
Publication First Results from the Herschel and ALMA Spectroscopic Surveys of the SMC: The Relationship between [C II]-bright Gas and CO-bright Gas at Low Metallicity . Jameson Katherine E. et al. . The Astrophysical Journal, Volume 853, Issue 2, article id. 111, 29 pp. (2018). . 853 . 10.3847\/1538-4357\/aaa4bb . 2018ApJ...853..111J ,
Instrument SPIRE_SpireSpectrometer_, PACS_PacsLineSpec_large, PACS_PacsLineSpec_point
Temporal Coverage 2012-01-16T22:15:17Z/2012-11-26T11:44:39Z
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 2013-05-26T08:39:24Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-05-26T08:39:24Z, OT2_abolatto_1, SPG v14.2.0. https://doi.org/10.5270/esa-wyvn9pj