The CDF Archive: Herschel PACS and SPIRE Spectroscopic Data Pipeline and Products for Protostars and Young Stellar Objects

TL;DR

This paper introduces the COPS-DIGIT-FOOSH Herschel spectroscopic data archive, providing processed data products and assessments for protostars and young stellar objects, enhancing data reliability and calibration for astrophysical research.

Contribution

It presents a comprehensive data archive with improved calibration, detailed processing descriptions, and reliability tests for Herschel PACS and SPIRE spectroscopic observations of protostars.

Findings

Improved absolute flux calibration in most cases.

Significant changes in CO rotational temperatures and molecule counts in some sources.

Average rotational temperature change is less than 2%, with an 18% increase in warm CO molecules.

Abstract

We present the COPS-DIGIT-FOOSH (CDF) Herschel spectroscopy data product archive, and related ancillary data products, along with data fidelity assessments, and a user-created archive in collaboration with the Herschel-PACS and SPIRE ICC groups. Our products include datacubes, contour maps, automated line fitting results, and best 1-D spectra products for all protostellar and disk sources observed with PACS in RangeScan mode for two observing programs: the DIGIT Open Time Key Program (KPOT_nevans_1 and SDP_nevans_1; PI: N. Evans), and the FOOSH Open Time Program (OT1_jgreen02_2; PI: J. Green). In addition, we provide our best SPIRE-FTS spectroscopic products for the COPS Open Time Program (OT2_jgreen02_6; PI: J. Green) and FOOSH sources. We include details of data processing, descriptions of output products, and tests of their reliability for user applications. We identify the parts of the dataset to be used with caution. The resulting absolute flux calibration has improved in almost all cases. Compared to previous reductions, the resulting rotational temperatures and numbers of CO molecules have changed substantially in some sources. On average, however, the rotational temperatures have not changed substantially (< 2%), but the number of warm (Trot ~ 300 K) CO molecules has increased by about 18%.