Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27960
Titolo: | The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z ≲ 1 Galaxies in the COSMOS Field | Autori: | Straatman, Caroline M. S. VAN DER WEL, ARJEN Bezanson, Rachel Pacifici, Camilla GALLAZZI, Anna Rita Wu, Po-Feng Noeske, Kai Barišić, Ivana Bell, Eric F. Brammer, Gabriel B. Calhau, João Chauke, Priscilla Franx, Marijn van Houdt, Josha Labbé, Ivo Maseda, Michael V. Muñoz-Mateos, Juan C. Muzzin, Adam van de Sande, Jesse Sobral, David Spilker, Justin S. |
Data pubblicazione: | 2018 | Rivista: | THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | Numero: | 239 | Fascicolo: | 2 | Da pagina:: | 27 | Abstract: | We present the second data release of the Large Early Galaxy Astrophysics Census (LEGA-C), an ESO 130-night public spectroscopic survey conducted with VIMOS on the Very Large Telescope. We release 1988 spectra with typical continuum S/N ≃ 20 Å<SUP>-1</SUP> of galaxies at 0.6 ≲ z ≲ 1.0, each observed for ∼20 hr and fully reduced with a custom-built pipeline. We also release a catalog with spectroscopic redshifts, emission-line fluxes, Lick/IDS indices, and observed stellar and gas velocity dispersions that are spatially integrated quantities, including both rotational motions and genuine dispersion. To illustrate the new parameter space in the intermediate-redshift regime probed by LEGA-C, we explore relationships between dynamical and stellar population properties. The star-forming galaxies typically have observed stellar velocity dispersions of ∼150 km s<SUP>-1</SUP> and strong Hδ absorption (Hδ <SUB>A</SUB> ∼ 5 Å), while passive galaxies have higher observed stellar velocity dispersions (∼200 km s<SUP>-1</SUP>) and weak Hδ absorption (Hδ <SUB>A</SUB> ∼ 0 Å). Strong [O III]5007/Hβ ratios tend to occur mostly for galaxies with weak Hδ <SUB>A</SUB> or galaxies with higher observed velocity dispersion. Beyond these broad trends, we find a diversity of possible combinations of rest-frame colors, absorption-line strengths, and emission-line detections, illustrating the utility of spectroscopic measurements to more accurately understand galaxy evolution. By making the spectra and value-added catalogs publicly available we encourage the community to take advantage of this very substantial investment in telescope time provided by ESO. | URI: | http://hdl.handle.net/20.500.12386/27960 | URL: | https://iopscience.iop.org/article/10.3847/1538-4365/aae37a | ISSN: | 0067-0049 | DOI: | 10.3847/1538-4365/aae37a | Bibcode ADS: | 2018ApJS..239...27S | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
Straatman_2018_ApJS_239_27.pdf | Pdf editoriale | 13.32 MB | Adobe PDF | Visualizza/apri |
27960-Straatman_2018_ApJS_239_27_P01.pdf | Miur | 5.87 MB | Adobe PDF | |
27960-Straatman_2018_ApJS_239_27_P02.pdf | Miur | 7.57 MB | Adobe PDF |
Page view(s)
37
controllato il 18-apr-2024
Download(s)
10
controllato il 18-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.