News
Herschel Science Centre e-News#38
Posted by h schelp on 13 December 2016 08:41 PM

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Herschel Science Centre e-News #38
13 December 2016
http://www.cosmos.esa.int/web/herschel
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"Exploiting the Herschel Science Archive" Workshop, 25-28 October 2016 - material available on-line

The PDF files and the video recording of all the presentations that were given at the "Exploiting the Herschel Science Archive" on-line Workshop, held on 25-28 October 2016, featuring the legacy contents of the Herschel Science Archive, are now publicly available at:

http://herschel.esac.esa.int/twiki/bin/view/Public/ArchivalWorkshop2016

The workshop was targeted at the community of Herschel users interested in archival research, with demonstrations of the various existing data mining tools, including a guided tour on the legacy of the Herschel mission with the goal to maximise the science exploitation of processed products in the Herschel Science Archive.

New User Provided Data Products (UPDPs) available

We continue collecting new sets of User Provided Data Products (UPDPs) from the community. They are served through the Herschel Science Archive user interface, which can be reached at:

http://www.cosmos.esa.int/web/herschel/science-archive

The latest addition is:

* PRISMAS: (PRobing InterStellar Molecules with Absorption line Studies): a comprehensive spectroscopic study carried over with HIFI and PACS of key molecular line carriers, probing interstellar hydrides (some 25 different molecules towards 10 sources) and carbon chains in our Galaxy. It took advantage of the strong dust emission from massive star forming regions to detect multiple absorption components from foreground clouds of diverse properties, known to intersect the selected lines of sight, along with emission and absorption intrinsic to the background sources.

You can find more information on this UPDP at: http://archives.esac.esa.int/hsa/legacy/UPDP/PRISMAS/prismas-release-note-v2-lo.pdf

The number of UPDPs served by the HSA is gradually increasing. The full list of available UPDPs at any time can be found at:

http://www.cosmos.esa.int/web/herschel/user-provided-data-products

Please contact the Herschel Science Centre Helpdesk if you have any question or if you need assistance on how to deliver your own User Provided Data Products.

New Highly Processed Data Products (HPDPs) available

As part of the continuous effort to improve the legacy contents of the Herschel Science Archive we are also embarked in the generation of Highly Processed Data Products (HPDPs), which are enhanced products with respect to what the automated processing pipelines can produce. These data sets are generated in a combined effort by experts at the Herschel Science Centre, the NASA Herschel Science Center and the Instrument Control Centres using interactive data reduction techniques, improving the quality or adding value to the products generated by the pipelines.

The list of HPDPs currently foreseen for the three instruments are compiled and made available at:

http://www.cosmos.esa.int/web/herschel/highly-processed-data-products

As of today, the following HPDPs have already been prepared and made available at the above web page:

1. Highly Processed HIFI Spectral Maps in the range 1410-1910 GHz - Available from the Herschel Science Centre and IPAC/IRSA.

Spectral mapping observations taken with Herschel/HIFI in Bands 6 and 7 (1410-1910 GHz) have been processed to highest fidelity using the final pipeline (v14.1.0) and calibrations, and interactive methods to most effectively treat baseline artifacts, co-add data, and optimize spectral cube gridding. These Highly Processed Data Products (HPDPs) provide the community interested in very high velocity resolution maps at these frequencies, covering [C II], [N II], high-J level CO and hot water transitions, with the nearest-possible to science-ready advanced data products without requiring HIPE. The products include the spectral cubes, spectral averages, and integrated line intensity maps in FITS format for ~450 science and calibration observations, as well as improved browse images to more readily reveal the scientific potential of the high-quality maps, which may have been missed by the original programme investigators.

The products are available for download as zipped tar archives at the Herschel Science Centre's HPDP webpage (see link above), and can also be browsed and downloaded on an observation basis from the NASA InfraRed Science Archive (IRSA, http://irsa.ipac.caltech.edu/Missions/herschel.html).

More information at: http://archives.esac.esa.int/hsa/legacy/HPDP/HIFI/HIFI_spectral_maps/HPDP_Release_Note_v1.1.pdf

2. HIFI reference positions spectra

This data-set provides a stand-alone collection of isolated spectra taken at the reference positions used to perform the vast majority of the HIFI observations. Although these products exist embedded in the observation contexts of each observation, this data-set allows an immediate inspection, and if applicable, further correction, of the reference spectra with no need to download the calibration context of a given observation. One particularity of this data-set is also that reference positions used in raster mapping and spectral scan observations are provided as data cubes and deconvolved spectra respectively, allowing direct comparison with the ON-target counterparts.

More information at: http://herschel.esac.esa.int/twiki/pub/Public/HifiDocsEditableTable/HIFI_ReferencePositionSpectra_HPDP_ReleaseNotes.pdf

3. HIFI flux calibration uncertainty budget tables

This data-set consists of a stand-alone collection of the HIFI flux calibration uncertainty tables provided as embedded products inside the HIFI observation contexts. Each table offers a detailed flux calibration uncertainty budget at the applicable observing frequency, as well as the combined error to quote for error bars on the extracted line or continuum intensities.

More information at: http://herschel.esac.esa.int/twiki/pub/Public/HifiDocsEditableTable/HIFI_UncertaintyTables_HPDP_ReleaseNotes.pdf


The Herschel Science Centre Helpdesk
http://www.cosmos.esa.int/web/herschel/helpdesk


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