A dataset provided by the European Space Agency

Name OT1_nbillot_1
Title HYSOVAR: Circumstellar Disks Variability around Young Stellar Objects in the Orion Nebula Cluster with Herschel-PACS
URL

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DOI 10.5270/esa-g6np211
Author billot, n.
Description The variability of Young Stellar Objects (YSOs) have been demonstrated over half a century ago from optical observations. More recent time series photometry of YSOs in the thermal infrared have shown their great potential to probe the structure of inner circumstellar disks (r << 1 AU), in particular the presence of warps and 'clouds. in the disks which may owe their existence to the gravitational torques from close-in planets. For instance the YSOVAR program used the Spitzer IRAC instrument to monitor over 1400~YSOs and establish that 70% of them show significant variability in the mid-IR. Today the Herschel-PACS spectral coverage, sensitivity and stability offer a unique opportunity to access the wavelength regime sensitive to the dust thermal emission from the terrestrial habitable zone through the ice-line where gas giants are expected to form. We propose the HYSOVAR program, an expansion of YSOVAR with the Herschel-PACS Photometer, to monitor the flux variations of 100+ Class I YSOs in Orion over weeks-to-years time scales. This small (9.9 hours) exploratory program would greatly increase the statistics and sensitivity of previous studies in the far-IR, and it would help us identify the physical processes responsible for the observed infrared variability by placing strong constraints on existing models of star and planet formation.
Publication Hops 383: an Outbursting Class 0 Protostar in Orion . Safron Emily J. et al. . The Astrophysical Journal Letters, Volume 800, Issue 1, article id. L5, 6 pp. (2015). . 800 . 10.1088\/2041-8205\/800\/1\/L5 . 2015ApJ...800L...5S ,
A Multi-band Catalog of 10978 Star Clusters, Associations, and Candidates in the Milky Way . Bica Eduardo et al. . The Astronomical Journal, Volume 157, Issue 1, article id. 12, 14 pp. (2019). . 157 . 10.3847\/1538-3881\/aaef8d . 2019AJ....157...12B ,
Velocity-resolved [CII] Emission and [CII]-FIR Mapping along Orion with Herschel . Goicoechea Javier R. et al. . The Astrophysical Journal, Volume 812, Issue 1, article id. 75, 21 pp. (2015). . 812 . 10.1088\/0004-637X\/812\/1\/75 . 2015ApJ...812...75G ,
Herschel Far-infrared Photometric Monitoring of Protostars in the Orion Nebula Cluster . Billot N. et al. . The Astrophysical Journal Letters, Volume 753, Issue 2, article id. L35, 8 pp. (2012). . 753 . 10.1088\/2041-8205\/753\/2\/L35 . 2012ApJ...753L..35B ,
Instrument PACS_PacsPhoto_largeScan
Temporal Coverage 2011-02-25T23:57:13Z/2012-08-27T16:53:57Z
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 2013-02-27T16:30:56Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-02-27T16:30:56Z, OT1_nbillot_1, SPG v14.2.0. https://doi.org/10.5270/esa-g6np211