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    Rights statement: This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4365/aae37a LEGA-C data-release http://www.mpia.de/home/legac/

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The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field

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The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2 : Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field. / Straatman, Caroline M. S.; Wel, Arjen van der; Bezanson, Rachel; Pacifici, Camilla; Gallazzi, Anna; Wu, Po-Feng; Noeske, Kai; Barisic, Ivana; Bell, Eric F.; Brammer, Gabriel B.; Calhau, Joao; Chauke, Priscilla; Franx, Marijn; Houdt, Josha van; Labbe, Ivo; Maseda, Michael V.; Munoz-Mateos, Juan C.; Muzzin, Adam; Sande, Jesse van de; Sobral, David; Spilker, Justin S.

In: The Astrophysical Journal, Vol. 239, No. 2, 05.12.2018, p. 1-14.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Straatman, CMS, Wel, AVD, Bezanson, R, Pacifici, C, Gallazzi, A, Wu, P-F, Noeske, K, Barisic, I, Bell, EF, Brammer, GB, Calhau, J, Chauke, P, Franx, M, Houdt, JV, Labbe, I, Maseda, MV, Munoz-Mateos, JC, Muzzin, A, Sande, JVD, Sobral, D & Spilker, JS 2018, 'The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field', The Astrophysical Journal, vol. 239, no. 2, pp. 1-14. https://doi.org/10.3847/1538-4365/aae37a

APA

Straatman, C. M. S., Wel, A. V. D., Bezanson, R., Pacifici, C., Gallazzi, A., Wu, P-F., Noeske, K., Barisic, I., Bell, E. F., Brammer, G. B., Calhau, J., Chauke, P., Franx, M., Houdt, J. V., Labbe, I., Maseda, M. V., Munoz-Mateos, J. C., Muzzin, A., Sande, J. V. D., ... Spilker, J. S. (2018). The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field. The Astrophysical Journal, 239(2), 1-14. https://doi.org/10.3847/1538-4365/aae37a

Vancouver

Author

Straatman, Caroline M. S. ; Wel, Arjen van der ; Bezanson, Rachel ; Pacifici, Camilla ; Gallazzi, Anna ; Wu, Po-Feng ; Noeske, Kai ; Barisic, Ivana ; Bell, Eric F. ; Brammer, Gabriel B. ; Calhau, Joao ; Chauke, Priscilla ; Franx, Marijn ; Houdt, Josha van ; Labbe, Ivo ; Maseda, Michael V. ; Munoz-Mateos, Juan C. ; Muzzin, Adam ; Sande, Jesse van de ; Sobral, David ; Spilker, Justin S. / The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2 : Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field. In: The Astrophysical Journal. 2018 ; Vol. 239, No. 2. pp. 1-14.

Bibtex

@article{a5c5a249132643b3928c30b326cefd93,
title = "The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field",
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 /Angstrom of galaxies at 0.6 ~< z ~< 1.0, each observed for ~20 hours 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 and strong Hdelta absorption (Hd_A ~ 5 Angstrom), while passive galaxies have higher observed stellar velocity dispersions ~200 km/s and weak Hdelta absortion (Hd_A ~ 0 Angstrom). Strong [O III]5007 / Hbeta ratios tend to occur mostly for galaxies with weak Hd_A or galaxies with higher observed velocity dispersion. Beyond these broad trends, we find a large 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.",
keywords = "astro-ph.GA",
author = "Straatman, {Caroline M. S.} and Wel, {Arjen van der} and Rachel Bezanson and Camilla Pacifici and Anna Gallazzi and Po-Feng Wu and Kai Noeske and Ivana Barisic and Bell, {Eric F.} and Brammer, {Gabriel B.} and Joao Calhau and Priscilla Chauke and Marijn Franx and Houdt, {Josha van} and Ivo Labbe and Maseda, {Michael V.} and Munoz-Mateos, {Juan C.} and Adam Muzzin and Sande, {Jesse van de} and David Sobral and Spilker, {Justin S.}",
note = "This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4365/aae37a LEGA-C data-release http://www.mpia.de/home/legac/",
year = "2018",
month = dec,
day = "5",
doi = "10.3847/1538-4365/aae37a",
language = "English",
volume = "239",
pages = "1--14",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2

T2 - Dynamical and Stellar Population Properties of z lesssim 1 Galaxies in the COSMOS Field

AU - Straatman, Caroline M. S.

AU - Wel, Arjen van der

AU - Bezanson, Rachel

AU - Pacifici, Camilla

AU - Gallazzi, Anna

AU - Wu, Po-Feng

AU - Noeske, Kai

AU - Barisic, Ivana

AU - Bell, Eric F.

AU - Brammer, Gabriel B.

AU - Calhau, Joao

AU - Chauke, Priscilla

AU - Franx, Marijn

AU - Houdt, Josha van

AU - Labbe, Ivo

AU - Maseda, Michael V.

AU - Munoz-Mateos, Juan C.

AU - Muzzin, Adam

AU - Sande, Jesse van de

AU - Sobral, David

AU - Spilker, Justin S.

N1 - This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4365/aae37a LEGA-C data-release http://www.mpia.de/home/legac/

PY - 2018/12/5

Y1 - 2018/12/5

N2 - 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 /Angstrom of galaxies at 0.6 ~< z ~< 1.0, each observed for ~20 hours 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 and strong Hdelta absorption (Hd_A ~ 5 Angstrom), while passive galaxies have higher observed stellar velocity dispersions ~200 km/s and weak Hdelta absortion (Hd_A ~ 0 Angstrom). Strong [O III]5007 / Hbeta ratios tend to occur mostly for galaxies with weak Hd_A or galaxies with higher observed velocity dispersion. Beyond these broad trends, we find a large 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.

AB - 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 /Angstrom of galaxies at 0.6 ~< z ~< 1.0, each observed for ~20 hours 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 and strong Hdelta absorption (Hd_A ~ 5 Angstrom), while passive galaxies have higher observed stellar velocity dispersions ~200 km/s and weak Hdelta absortion (Hd_A ~ 0 Angstrom). Strong [O III]5007 / Hbeta ratios tend to occur mostly for galaxies with weak Hd_A or galaxies with higher observed velocity dispersion. Beyond these broad trends, we find a large 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.

KW - astro-ph.GA

U2 - 10.3847/1538-4365/aae37a

DO - 10.3847/1538-4365/aae37a

M3 - Journal article

VL - 239

SP - 1

EP - 14

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

ER -