| Name | OT2_dwatso02_5 |
| Title | HIFI and SPIRE spectroscopy of HOPS 87: a bright water-rich protostar without an outflow |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342249618&instrument_name=HIFI&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-gaqyuym |
| Author | watson, d. |
| Description | We propose to use Herschel HIFI and SPIRE to observe emission lines of water and CO in a low-mass Class 0 protostar, HOPS 87 (a.k.a. OMC-3 MMS 6N), for which we have characterized the water emission spectrum extensively with Spitzer-IRS and Herschel-PACS. HOPS 87 is the most luminous source of water emission lines found in a survey of low-mass YSOs, but has very little other emission that could be taken as evidence of a high-velocity outflow; if it truly lacks such an outflow at present it provides a rare opportunity to examine emission from the infalling envelope and potentially the envelope-disk accretion shock. With HIFI spectra we will determine whether or not the water emission arises in a high-velocity outflow, and detect separately the kinematic signatures of the warm inner envelope, the outflow-cavity walls, and perhaps the envelope-disk accretion flow. Confirmation of the detection of dense water in the disk accretion flow, which has been suggested as the origin of the mid-infrared (20-40~micron ) water emission, would be the first unambiguous detection of this flow and is a major goal of this proposal. With SPIRE spectra we will complete our Spitzer-IRS and Herschel-PACS census of water and CO emission in this object, thereby obtaining a particularly complete and detailed account of physical conditions in the HOPS 87 envelope. |
| Publication | |
| Instrument | HIFI_HifiPoint_dbs |
| Temporal Coverage | 2012-08-16T12:25:04Z/2012-09-28T22:55:03Z |
| Version | SPG v14.1.0 |
| 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 | 2013-03-28T22:00:28Z |
| Last Update | 2026-03-02 |
| Keywords | Herschel Space Observatory data, ESA Herschel mission dataset, far-infrared astronomy observations, submillimeter astronomy data, infrared space telescope observations, PACS photometer data, PACS spectrometer data, SPIRE photometer data, SPIRE Fourier transform spectrometer data, HIFI heterodyne spectroscopy data, far-infrared spectroscopy dataset, submillimeter spectral line observations, cold universe observations dataset, star formation infrared data, molecular cloud far-infrared observations, interstellar medium spectroscopy data, protoplanetary disk infrared observations, galaxy evolution far-infrared data, dust emission submillimeter observations, cosmic infrared background measurements, extragalactic infrared survey data, calibrated level 2 data products, FITS files astronomy, spectral cubes far-infrared, flux-calibrated maps, continuum photometry data, spectral energy distribution measurements, ESA Herschel Science Archive data |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, watson et al., 2013, 'HIFI and SPIRE spectroscopy of HOPS 87: a bright water-rich protostar without an outflow', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-gaqyuym |