Herschel Oxygen Project (HOP) Overview
HOP Overview HOP Primary Data Access


he Herschel Oxygen Project (HOP) is Herschel Open Time Key Program (KPOT_pgolds01_1). The main goal of HOP was to use HIFI to probe a range of molecular cloud environments to detect molecular oxygen. The three strongest transitions in the range covered by HIFI from energy levels lower than 120 K above the ground state were selected (487.3 GHz, 773.8 GHz and 1120.7 GHz) for the following targets: Sgr A, Sgr B2(S), OMC-1(Peak 1), Orion Bar, rho Oph A, NGC 1333 IRAS 4A, NGC 6334I and AFGL 2591. Both single LOs and Spectral scans are available. This program also provides a spectral map of rhoOph. The spectra are provided at the four positions indicated in Liseau et al. (2012).

If you use HOP data, please cite both the journal article Liseau et al. (2012) and the dataset Digital Object Identifier (DOI): 10.26131/IRSA513.

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Data Set Characteristics

Data ProductDescriptionData Access
Spectra Herschel HIFI: 487-774 GHz (388-616 microns)

HOP Documentation

HOP Documentation