A dataset provided by the European Space Agency

Name OT2_landerso_1
Title Tracing Galactic Metallicity with Herschel
URL

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DOI https://doi.org/10.5270/esa-vo31nuv
Author anderson, l.
Description Galactic abundances trace the processing of primordial elements bystars from the birth of the Milky Way to the present day. HIIregions, because of their short lifetimes, are ideal targets forabundance determinations because they sample the current state of theinterstellar medium. We propose to observe the OIII, NIII, andNII lines of 31 well-studied Galactic HII regions with the PACSspectrometer to derive the oxygen and nitrogen abundances. We hope toaddress two long-standing problems in Galactic abundance measurements:1) abundances traced in the far-infrared show discrepancies with thosein the optical, and 2) HII region electron temperatures derived fromradio observations, which can be used as a proxy for metallicity, arenot well calibrated with abundance measurements.
Publication
    Instrument PACS_PacsLineSpec_point
    Temporal Coverage 2013-03-21T16:25:47Z/2013-04-11T14:25:06Z
    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 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
    Creator Contact https://support.cosmos.esa.int/h®erschel/
    Date Published 2013-10-11T13:57:41Z
    Keywords Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE
    Publisher And Registrant European Space Agency
    Credit Guidelines European Space Agency, anderson et al., 2013, 'Tracing Galactic Metallicity with Herschel', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-vo31nuv