HOPS SED Fits Catalog
The Herschel Orion Protostar Survey (HOPS, KPOT_tmegeath_2) is a sample of 410 young stellar objects (YSOs) in the Orion molecular clouds, selected from Spitzer data. Most objects have near-infrared photometry from 2MASS, mid- and far-infrared data from Spitzer and Herschel, and submillimeter photometry from APEX; thus, the SEDs cover 1.2 - 870 microns and are used to classify the sample into protostellar classes. Of the 410 YSOs, 330 have Spitzer and Herschel data and are mostly protostars; the remaining objects include likely extragalactic contaminants and faint YSOs. Using mid-IR spectral indices and bolometric temperatures, the sample of 330 YSOs is classified into 92 Class 0 protostars, 125 Class I protostars, 102 flat-spectrum sources, and 11 Class II re-main-sequence stars. HOPS also implements a simple protostellar model (including a disk in an infalling envelope with outflow cavities) to generate a grid of 30,400 model SEDs and uses it to determine the best-fit model parameters for each protostar.\n\nThis table contains the SED class, bolometric luminosity and temperature, mid-IR spectral index, and best-fit model parameters for the 330 YSOs with Spitzer and Herschel data.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "026:00" ] |
| contactPoint |
{ "fn": "IRSA Support", "@type": "vcard:Contact", "hasEmail": "mailto:irsasupport@ipac.caltech.edu" } |
| description | The Herschel Orion Protostar Survey (HOPS, KPOT_tmegeath_2) is a sample of 410 young stellar objects (YSOs) in the Orion molecular clouds, selected from Spitzer data. Most objects have near-infrared photometry from 2MASS, mid- and far-infrared data from Spitzer and Herschel, and submillimeter photometry from APEX; thus, the SEDs cover 1.2 - 870 microns and are used to classify the sample into protostellar classes. Of the 410 YSOs, 330 have Spitzer and Herschel data and are mostly protostars; the remaining objects include likely extragalactic contaminants and faint YSOs. Using mid-IR spectral indices and bolometric temperatures, the sample of 330 YSOs is classified into 92 Class 0 protostars, 125 Class I protostars, 102 flat-spectrum sources, and 11 Class II re-main-sequence stars. HOPS also implements a simple protostellar model (including a disk in an infalling envelope with outflow cavities) to generate a grid of 30,400 model SEDs and uses it to determine the best-fit model parameters for each protostar.\n\nThis table contains the SED class, bolometric luminosity and temperature, mid-IR spectral index, and best-fit model parameters for the 330 YSOs with Spitzer and Herschel data. |
| distribution |
[ { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "https://irsa.ipac.caltech.edu/SCS?table=hopsfits&" }, { "@type": "dcat:Distribution", "format": "BIN", "mediaType": "application/octet-stream", "downloadURL": "https://irsa.ipac.caltech.edu/data/Herschel/HOPS/" } ] |
| identifier | ivo://irsa.ipac/herschel/catalog/hops/hops_sed_fits |
| keyword |
[ "__" ] |
| landingPage | ivo://irsa.ipac/herschel/catalog/hops/hops_sed_fits |
| license | https://www.usa.gov/government-works |
| modified | 2026-09-07 |
| programCode |
[ "026:000" ] |
| publisher |
{ "name": "NASA/IPAC Infrared Science Archive", "@type": "org:Organization" } |
| theme |
[ "Astrophysics" ] |
| title | HOPS SED Fits Catalog |
