| Name | OT2_ipascucc_2 |
| Title | The Masses of Brown Dwarf Disks and the Disk-Stellar Mass Scaling Relation |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342263459&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-g9737jg |
| Author | pascucci, i. |
| Description | Theoretical models of planet formation have shown that the masses of protoplanetary disks, which are dominated by gas, strongly affect the resulting planetary architectures. Expanding upon the Herschel KP Gas in Protoplanetary Systems (GASPS), we propose here a sensitive Herschel-PACS survey to measure the gas disk masses of a well-characterized sample of very low-mass stars-brown dwarfs (BDs). Our survey has two main goals. First, we will empirically set a limit for the largest planets that can form around BDs and thus elucidate the nature of the few planet candidates discovered around them. Second, we will combine our mass estimates with those acquired within GASPS for intermediate- and solar-masss stars to constrain how the disk mass scales with the mass of the central star. To reach these goals we will use deep PACS exposures to detect the [OI] 63 micron emission line which traces the bulk of the disk mass residing beyond tens of AU from young stars. We will use similar models to those developed within GASPS to convert [OI] line fluxes into gas masses. The sensitivity of Herschel-PACS gives us a unique opportunity to measure disk masses down to the BD regime and to provide the critical observational constraints to planet formation theories. |
| Publication | Herschel-PACS observations of far-IR lines in young stellar objects. I. [OI] and H2O at 63 μm . Riviere-Marichalar P. et al. . Astronomy & Astrophysics, Volume 594, id.A59, 25 pp. . 594 . 10.1051/0004-6361/201527829 . 2016A&A...594A..59R , Hints for Small Disks around Very Low Mass Stars and Brown Dwarfs . Hendler Nathanial P. et al. . The Astrophysical Journal, Volume 841, Issue 2, article id. 116, 13 pp. (2017). . 841 . 10.3847/1538-4357/aa71b8 . 2017ApJ...841..116H , |
| Instrument | PACS_PacsLineSpec_point |
| Temporal Coverage | 2013-02-10T02:06:25Z/2013-02-25T15:38:16Z |
| 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 | 2013-08-25T11:04:36Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2013-08-25T11:04:36Z, OT2_ipascucc_2, SPG v14.2.0. https://doi.org/10.5270/esa-g9737jg |