A dataset provided by the European Space Agency

Name OT1_rcesaron_1
Title Luminosity and mass loss history of the high-mass protostar IRAS20126+4104
URL

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DOI 10.5270/esa-jy6bw6p
Author cesaroni, r.
Description The main goal of this project is to estimate the luminosity of the high-mass protostar IRAS20126+4104 and obtain a direct measurement of the mass loss rate of the associated bipolar outflow. This is a well studied object, where a 7 Msun protostar is surrounded by a Keplerian disk and powers a bipolar outflow. The relatively small distance (1.64 kpc) and the limited complexity of the surroundings of this object, combined with the unique angular resolution of HERSCHEL in the far-IR, make it possible to reconstruct the spectral energy distribution and thus obtain an accurate estimate of the stellar luminosity. Knowledge of the mass and luminosity will set constraints on the evolutionary stage of the young stellar object. We also want to observe the OI 63 micron line which is strictly related to the mass los rate of the outflow. The latter can thus be obtained independent of the usual drawbacks (uncertain molecular abundance, unknown outflow inclination angle) of the estimates obtained from CO and other typical outflow tracers. Moreover, since the outflow is precessing, one can also relate the position along the outflow with the time of ejection and reconstruct the mass loss rate history of this object. We will also observe the OI 145 micron line to verify possible opacity effects in the 63 micron line, from the ratio between the two lines. These data will be complemented with observations of the CI line to image possible photo dissociation regions, plus a number of CO lines observed with SPIRE, PACS, and HIFI, to reconstruct the excitation structure of the outflow, both in space and velocity.
Publication The SOFIA Massive (SOMA) Star Formation Survey. I. Overview and First Results . De Buizer James M. et al. . The Astrophysical Journal, Volume 843, Issue 1, article id. 33, 27 pp. (2017). . 843 . 10.3847\/1538-4357\/aa74c8 . 2017ApJ...843...33D ,
Instrument SPIRE_SpireSpectrometer_, SPIRE_SpirePhoto_small, PACS_PacsLineSpec_large, HIFI_HifiMapping_fly, PACS_PacsPhoto_largeScan
Temporal Coverage 2010-12-20T12:54:09Z/2012-05-24T05:48:17Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2012-11-24T05:06:39Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-11-24T05:06:39Z, OT1_rcesaron_1, SPG v14.2.0. https://doi.org/10.5270/esa-jy6bw6p