| Name | OT1_ncalvet_1 |
| Title | A Deeper Look at the 3-10 Myr Old Disks in the Orion OB1 Association |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342241387&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-owf0vcc |
| Author | calvet, n. |
| Description | We propose to obtain deep 70/160 micron PACS Photometer observations of populations in the Orion OB1 association, spanning the critical 3 to 10 Myr range of ages when disks are supposed to dissipate and planets to form. Our ongoing large-scale survey of the Orion OB1 star-forming regions has allowed us to find the elusive low mass population in the older parts of the association, and secure the photometric and spectroscopic data to fully determine the stellar and accretion properties of these objects. We propose to obtain slow-speed scans of five 30x30 fields, covering sections of the ~ 3 Myr old cluster sigma Ori, a ~ 5 Myr old group in the Ori OB1b subassociation, and the ~ 9 Myr old 25 Ori group, the most populous stellar group at this age within 500 pc. Our Spitzer IRAC and MIPS data for the proposed fields allow us to estimate that we will detect at least 62 disks in our PACS observations, 48% of which also have Spitzer IRS data. With the Herschel far-infrared fluxes and our mid-infrared and optical fluxes we will construct the most complete spectral energy distributions for a large sample of 3-10 Myr disks. The interpretation of these SEDs with our irradiated accretion disk codes, constrained by the stellar parameters and mass accretion rates determined independently from the UV excess, will allow the best characterization to date of disks in this age range, and provide essential constraints on theoretical models of disk evolution and planet formation. |
| Publication |
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| Instrument | PACS_PacsPhoto_largeScan |
| Temporal Coverage | 2012-03-14T03:51:56Z/2012-03-29T08:55:46Z |
| 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 | 2012-09-29T04:50:11Z |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, calvet et al., 2012, 'A Deeper Look at the 3-10 Myr Old Disks in the Orion OB1 Association', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-owf0vcc |