A dataset provided by the European Space Agency

Name GT2_rliseau_1
Title A complete water map of the rho Ophiuchi cloud core A


DOI https://doi.org/10.5270/esa-vyx1soe
Author European Space Agency
Description Within only a few arcminutes, the nearby rho Oph A cloud core harbours
distinctly different physical regions, i.e. gravitationally unstable dense
cores, a highly collimated bipolar outflow from a class 0 protostar and
photon dominated regions (PDRs) in the cloud surface layers. These
regions are also spatially well separated and offer the opportunity to
study in great detail the different chemistries at work, i.e. grain surface
reactions, shock chemistry and UV-controlled photochemistry, all on the
r^ant physical scales (< 1e16cm). The different chemistries, in turn,
give rise to variations in elemental and molecular abundances, which
control the energy balance of the source regions and provide feedback
onto the chemistry. Although particular in some respects (detecatable
amounts of O2 and H2O2), rho Oph A offers the opportunity to obtain v
ital general information regarding the physics and chemistry of star
forming regions.
We propose the extensions of our water map to include all source regions,
most of which were previously not covered, as the currently available map
is limited to the outflow. Simultaneously with the two ground state lines of
ortho-water at 557 GHz and 1669 GHz, we also obtain the spatial
distribution of the ground state line of ammonia and of a higher excitation
H2O line, respectively, with HIFI. In addition, to address the still enigmatic
oxygen chemistry, we propose a limited map with PACS of the elemental
oxygen fine structure lines at 63 and 145 micron. The total observing
time amount to 10.7 hours, which is an inexpensive investment for such a
valuable Herschel legacy as the proposed program.
Publication Gas and dust in the star-forming region ρ Oph A. II. The gas in the PDR and in the dense cores . Larsson B. et al. . Astronomy & Astrophysics, Volume 608, id.A133, 20 pp. . 608 . 10.1051\/0004-6361\/201731466 . 2017A&A...608A.133L ,
Instrument HIFI_HifiMapping_fly, PACS_PacsLineSpec_large
Temporal Coverage 2012-08-28T10:10:52Z/2012-09-26T04:17:17Z
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 2013-03-26T02:55:41Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, A Complete Water Map Of The Rho Ophiuchi Cloud Core A, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-vyx1soe