A dataset provided by the European Space Agency

Name OT2_jmartinp_4
Title The Galactic center as the laboratory to understand nuclear activity in galaxies (GC_JMP)
URL

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DOI 10.5270/esa-4d9ffhs
Author martin-pintado, j.
Description We propose to use the The Galactic center (GC) a local extragalactic laboratory to understand the chemistry and the heating mechanisms in nearby galactic nuclei. The central 30 pc region around the black hole, Sgr A*, contains all the different type of activity found in extragalactic nuclei, namely, massive stellar clusters creating large photodissociation regions (PDR), shocks, molecular clouds irradiated by strong X-rays (XDRs), and the site of Cosmic Rays (CRs) acceleration as shown by HESS. We plan to map this region with SPIRE in the high spectral resolution mode and with HIFI in selected molecular ions H _3 O ^+ , OH ^+ , and H _2 O ^+ claimed to trace XDRs and-or CRs. This unique data set will provide the possibility to understand the origin of the large column densities of this hydrides found in galactic nuclei with different type of activity and the role of the PDR-XDR-CR chemistries in their formation. The SPIRE data cubes will have a huge legacy value providing the full FIR inventory of the atomic and molecular gas across the central 50 pc of the Galaxy. We stress that only the combination of the high spectral resolution of HIFI and the spatial distribution provided the proposed mapping will have the possibility to distinguish which of the different components of the molecular gas along the line of sight correspond to the ones associated with XDRs PDRs and eventually CRs acceleration sites.
Publication Herschel water maps towards the vicinity of the black hole Sgr A* . Armijos-Abendaño J. et al. . Astronomy and Astrophysics . null . null . 2019A&A...624A.112A ,
Instrument SPIRE_SpireSpectrometer_, HIFI_HifiPoint_pos, HIFI_HifiMapping_load-raster, HIFI_HifiMapping_fly
Temporal Coverage 2012-09-06T10:42:43Z/2012-10-17T23:04:22Z
Version SPG v14.1.0
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/herschel/
Date Published 2013-04-17T20:50:57Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-04-17T20:50:57Z, OT2_jmartinp_4, SPG v14.1.0. https://doi.org/10.5270/esa-4d9ffhs