| Name | SDP_nevans_3 |
| Title | Dust, Ice, and Gas In Time (DIGIT) |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342188037&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-jahe6il |
| Author | evans, n. |
| Description | Dust, ice, and gas evolve as they move from envelopes of forming stars into circumstellar disks where they can become the main building blocks of planets. Herschel-PACS is uniquely suited to trace this evolution through broadband emission from dust, through specific features of solids which reveal elemental composition and water content, and through spectral bands of the main icy components. Both atomic and molecular lines, in particular the [O I], H2O and OH lines, will be used to follow the gas, study the interchange between gas and ice, and trace the oxygen budget. The gas and dust spectral features are at the same time excellent probes of macroscopic parameters, such as temperature, UV and X-ray fields, density and thermal structures of envelopes and disks, and dynamical mixing processes. Our sample covers sources with a range in evolutionary state from embedded objects with massive envelopes to weak-line T Tauri stars with dissipating disks, and with a range in luminosity, spectral type, and dust characteristics. Both our high S-N PACS full spectral range scans (complemented by Spitzer mid-IR spectral scans) and our targeted, deep gas-phase line measurements will have lasting archival value. |
| Publication | First results of the Herschel key program ''Dust, Ice and Gas In Time.. (DIGIT): Dust and gas spectroscopy of HD 100546 . Sturm B. et al. . Astronomy and Astrophysics, Volume 518, id.L129, 5 pp. . 518 . 10.1051/0004-6361/201014674 . 2010A&A...518L.129S , DIGIT survey of far-infrared lines from protoplanetary discs. II. CO . Meeus Gwendolyn et al. . Astronomy & Astrophysics, Volume 559, id.A84, 20 pp. . 559 . 10.1051/0004-6361/201321122 . 2013A&A...559A..84M , Mass constraints for 15 protoplanetary discs from HD 1-0 . Kama M. et al. . Astronomy and Astrophysics . null . null . 2020A&A...634A..88K , Low abundance, strong features: window-dressing crystalline forsterite in the disk wall of HD 100546 . Mulders G. D. et al. . Astronomy & Astrophysics, Volume 531, id.A93, 17 pp. . 531 . 10.1051/0004-6361/201116770 . 2011A&A...531A..93M , The CDF Archive: Herschel PACS and SPIRE Spectroscopic Data Pipeline and Products for Protostars and Young Stellar Objects . Green Joel D. et al. . The Astronomical Journal, Volume 151, Issue 3, article id. 75, 23 pp. (2016). . 151 . 10.3847/0004-6256/151/3/75 . 2016AJ....151...75G , The warm gas atmosphere of the HD 100546 disk seen by Herschel. Evidence of a gas-rich, carbon-poor atmosphere? . Bruderer S. et al. . Astronomy & Astrophysics, Volume 541, id.A91, 28 pp. . 541 . 10.1051/0004-6361/201118218 . 2012A&A...541A..91B , DIGIT survey of far-infrared lines from protoplanetary disks. I. [O i], [C ii], OH, H2O, and CH+ . Fedele D. et al. . Astronomy & Astrophysics, Volume 559, id.A77, 22 ... |
| Instrument | PACS_PacsRangeSpec_ |
| Temporal Coverage | 2009-12-11T03:55:45Z/2009-12-11T11:18:01Z |
| 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 | 2010-01-20T08:53:27Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2010-01-20T08:53:27Z, SDP_nevans_3, SPG v14.2.0. https://doi.org/10.5270/esa-jahe6il |