A dataset provided by the European Space Agency

Name OT1_bnisini_1
Title Probing the physics and dynamics of the hidden warm gas in the youngest protostellar outflows
URL

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DOI 10.5270/esa-h9xhz1b
Author nisini, b.
Description We propose to obtain PACS and HIFI spectroscopic maps of five outflows driven by young and heavily embedded Class 0 protostars, in selected transitions of [OI], CO and H2O. These species represent the main coolants of the warm (T ~ 100-2000 K) and dense (10^4 cm^{-3}-10^6 cm^{-3}) shocked gas that gives rise to most of the radiative luminosity of these systems. The immediate objectives of the proposed observations will be: 1) to detect, through a map of the [OI]63um line, the embedded atomic primary jet that should be responsible for the acceleration of the outflow; 2) to map the excitation structure of the molecular warm gas component and understand its role in the dynamics of the system; 3)to derive the spatial variations, as a function of the central source, of the H2O abundance and O-H2O abundance ratio, that will be tracing time-dependent chemical changes during the flow life-time. In order to maximize the scientific return from this program, we have selected sources that will be already mapped in the H2O 557 GHz line within the WISH Key Program. If added to the ground-based and space-borne spectral maps already available for the selected objects, the proposed Herschel observations will represent the first multi-wavelength spatial study of protostellar outflows covering the complete spectral domain of emission (from NIR to mm) of these objects. Such a data-base has a strong legacy value for both future missions and development of theoretical models and numerical simulations of shocks and outflows.
Publication Oxygen budget in low-mass protostars: the NGC 1333-IRAS4A R1 shock observed in [O I] at 63 μm with SOFIA-GREAT . Kristensen L. E. et al. . Astronomy & Astrophysics, Volume 601, id.L4, 5 pp. . 601 . 10.1051\/0004-6361\/201630310 . 2017A&A...601L...4K ,
[O I] 63 μm Jets in Class 0 Sources Detected By Herschel . Nisini B. et al. . The Astrophysical Journal, Volume 801, Issue 2, article id. 121, 14 pp. (2015). . 801 . 10.1088\/0004-637X\/801\/2\/121 . 2015ApJ...801..121N ,
Water distribution in shocked regions of the NGC 1333-IRAS 4A protostellar outflow . Santangelo G. et al. . Astronomy & Astrophysics, Volume 568, id.A125, 12 pp. . 568 . 10.1051\/0004-6361\/201424034 . 2014A&A...568A.125S ,
Instrument PACS_PacsLineSpec_large, HIFI_HifiMapping_fly
Temporal Coverage 2011-08-08T01:01:23Z/2012-09-19T07:45:03Z
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/herschel/
Date Published 2013-03-19T03:35:53Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-03-19T03:35:53Z, OT1_bnisini_1, SPG v14.2.0. https://doi.org/10.5270/esa-h9xhz1b