The COS Legacy Archive Spectroscopy Survey (CLASSY) Treasury Atlas

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Berg, DA (Autor) Outra; James, BL (Autor) Outra; King, T (Autor) Outra; McDonald, M (Autor) Outra; Chen, ZY (Autor) Outra; Chisholm, J (Autor) Outra; Heckman, T (Autor) Outra; Martin, CL (Autor) Outra; Stark, DP (Autor) Outra; Aloisi, A (Autor) Outra; Amorin, RO (Autor) Outra; Arellano-Cordova, KZ (Autor) Outra; Bayliss, M (Autor) Outra; Bordoloi, R (Autor) Outra; J. Brinchmann (Autor) FCUP; Charlot, S (Autor) Outra; Chevallard, J (Autor) Outra; Clark, I (Autor) Outra; Erb, DK (Autor) Outra; Feltre, A (Autor) Outra; Gronke, M (Autor) Outra; Hayes, M (Autor) Outra; Henry, A (Autor) Outra; Hernandez, S (Autor) Outra; Jaskot, A (Autor) Outra; Jones, T (Autor) Outra; Kewley, LJ (Autor) Outra; Kumari, N (Autor) Outra; Leitherer, C (Autor) Outra; Llerena, M (Autor) Outra; Maseda, M (Autor) Outra; Mingozzi, M (Autor) Outra; Nanayakkara, T (Autor) Outra; Ouchi, M (Autor) Outra; Plat, A (Autor) Outra; Pogge, RW (Autor) Outra; Ravindranath, S (Autor) Outra; Rigby, JR (Autor) Outra; Sanders, R (Autor) Outra; Scarlata, C (Autor) Outra; Senchyna, P (Autor) Outra; Skillman, ED (Autor) Outra; Steidel, CC (Autor) Outra; Strom, AL (Autor) Outra; Sugahara, Y (Autor) Outra; Wilkins, SM (Autor) Outra; Wofford, A (Autor) Outra; Xu, XF (Autor) Outra

Revista

Título: Astrophysical Journal, Supplement Series

Vol. 261

Página Final: 31

ISSN: 0067-0049

Editora: American Astronomical Society

Indexação

ISI Web of Knowledge - 27 Citações

Outras Informações

ID Authenticus: P-00X-1J1

DOI: 10.3847/1538-4365/ac6c03

Abstract (EN): Far-ultraviolet (FUV; similar to 1200-2000 angstrom) spectra are fundamental to our understanding of star-forming galaxies, providing a unique window on massive stellar populations, chemical evolution, feedback processes, and reionization. The launch of the James Webb Space Telescope will soon usher in a new era, pushing the UV spectroscopic frontier to higher redshifts than ever before; however, its success hinges on a comprehensive understanding of the massive star populations and gas conditions that power the observed UV spectral features. This requires a level of detail that is only possible with a combination of ample wavelength coverage, signal-to-noise, spectral-resolution, and sample diversity that has not yet been achieved by any FUV spectral database. We present the Cosmic Origins Spectrograph Legacy Spectroscopic Survey (CLASSY) treasury and its first high-level science product, the CLASSY atlas. CLASSY builds on the Hubble Space Telescope (HST) archive to construct the first high-quality (S/N-1500 angstrom greater than or similar to 5/resel), high-resolution (R similar to 15,000) FUV spectral database of 45 nearby (0.002 < z < 0.182) star-forming galaxies. The CLASSY atlas, available to the public via the CLASSY website, is the result of optimally extracting and coadding 170 archival+new spectra from 312 orbits of HST observations. The CLASSY sample covers a broad range of properties including stellar mass (6.2 < log M-*(M (circle dot)) < 10.1), star formation rate (-2.0 < log SFR (M (circle dot) yr(-1)) < +1.6), direct gas-phase metallicity (7.0 < 12+log(O/H) < 8.8), ionization (0.5 < O-32 < 38.0), reddening (0.02 < E(B - V) < 0.67), and nebular density (10 < n (e) (cm(-3)) < 1120). CLASSY is biased to UV-bright star-forming galaxies, resulting in a sample that is consistent with the z similar to 0 mass-metallicity relationship, but is offset to higher star formation rates by roughly 2 dex, similar to z greater than or similar to 2 galaxies. This unique set of properties makes the CLASSY atlas the benchmark training set for star-forming galaxies across cosmic time.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 41