CLASSY. II. A Technical Overview of the COS Legacy Archive Spectroscopic Survey*

Bethan L James , Danielle A Berg , Teagan King , David J Sahnow , Matilde Mingozzi , John Chisholm , Timothy Heckman , Crystal L Martin , Dan P Stark , Alessandra Aloisi , Ricardo O Amorín , Karla Z Arellano-Córdova , Matthew Bayliss , Rongmon Bordoloi , Jarle Brinchmann , Stéphane Charlot (1) , Zuyi Chen , Jacopo Chevallard , Ilyse Clark , Dawn K Erb , Anna Feltre , Matthew Hayes , Alaina Henry , Svea Hernandez , Anne Jaskot , Lisa J Kewley , Nimisha Kumari , Claus Leitherer , Mario Llerena , Michael Maseda , Themiya Nanayakkara , Masami Ouchi , Adele Plat , Richard W Pogge , Swara Ravindranath , Jane R Rigby , Claudia Scarlata , Peter Senchyna , Evan D Skillman , Charles C Steidel , Allison L Strom , Yuma Sugahara , Stephen M Wilkins , Aida Wofford , Xinfeng Xu

1 IAP - Institut d'Astrophysique de Paris

The COS Legacy Archive Spectroscopic SurveY (CLASSY) is designed to provide the community with a spectral atlas of 45 nearby star-forming galaxies that were chosen to cover similar properties to those seen at high z (z > 6). The prime high-level science product of CLASSY is accurately coadded UV spectra, ranging from ∼1000 to 2000 Å, derived from a combination of archival and new data obtained with HST's Cosmic Origins Spectrograph (COS). This paper details the multistage technical processes of creating this prime data product and the methodologies involved in extracting, reducing, aligning, and coadding far-ultraviolet and near-ultraviolet (NUV) spectra. We provide guidelines on how to successfully utilize COS observations of extended sources,

Domaines: Physique [physics]; Astrophysique [astro-ph]; Cosmologie et astrophysique extra-galactique [astro-ph.CO]

Bethan L James, Danielle A Berg, Teagan King, David J Sahnow, Matilde Mingozzi, et al.. CLASSY. II. A Technical Overview of the COS Legacy Archive Spectroscopic Survey*. The Astrophysical Journal Supplement Series, 2022, 262, ⟨10.3847/1538-4365/ac8008⟩. ⟨hal-03839159⟩