A dataset provided by the European Space Agency

Name OT1_tbell_2
Title Probing The Unique Environment Around Sgr A*
URL

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http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342253145&instrument_name=HIFI&product_level=LEVEL0&compress=true

DOI https://doi.org/10.5270/esa-thi9p9n
Author bell, t.
Description We propose to study the extreme conditions in the molecular gas
surrounding Sgr A* by obtaining a full spectral survey of this source
with Herschel/HIFI. This will provide a complete chemical inventory,
containing multiple transitions spanning a broad range of excitation
conditions, and will constitute a unique resource with which to explore
the diverse physical processes at work and confront current models
with important new constraints. The molecular gas in this circumnuclear
disk also serves as a template for the study of central regions of other
galaxies, helping to elucidate the properties in those distant sources.
These data will also include absorption lines from many important
hydrides in diffuse clouds along the line of sight, and we will also
perform deep integrations at specific frequencies to target key metal
hydrides, which will allow depletion, diffuse cloud chemistry and key
chemical reactions to be probed. The plethora of emission and
absorption lines that these observations will provide, across a frequency
range that is largely inaccessible from the ground, will constitute a
detailed chemical and physical portrait of the interstellar medium under
a diverse and extreme range of conditions. As such, the proposed
spectral survey and deep integrations represent a valuable legacy
dataset for the future.
Publication High-velocity hot CO emission close to Sgr A*. Herschel/HIFI submillimeter spectral survey toward Sgr A* . Goicoechea J. R. et al. . Astronomy & Astrophysics, Volume 616, id.L1, 7 pp. . 616 . 10.1051\/0004-6361\/201833684 . 2018A&A...616L...1G ,
Instrument HIFI_HifiFS_load-freq
Temporal Coverage 2011-10-08T01:27:49Z/2012-10-12T07:13:32Z
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/h®erschel/
Date Published 2013-04-12T04:44:28Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, bell, t., 2013, OT1_tbell_2, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-thi9p9n