THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr

A. Van Der Wel; K. Noeske; R. Bezanson; C. Pacifici; A. Gallazzi; M. Franx; J. C. Muñoz-Mateos; E. F. Bell; G. Brammer; S. Charlot; P. Chauké; I. Labbé; M. V. Maseda; A. Muzzin; H. W. Rix; D. Sobral; J. Van De Sande; P. G.Van Dokkum; V. Wild; C. Wolf

doi:10.3847/0067-0049/223/2/29

THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr

A. Van Der Wel, K. Noeske, R. Bezanson, C. Pacifici, A. Gallazzi, M. Franx, J. C. Muñoz-Mateos, E. F. Bell, G. Brammer, S. Charlot, P. Chauké, I. Labbé, M. V. Maseda, A. Muzzin, H. W. Rix, D. Sobral, J. Van De Sande, P. G.Van Dokkum, V. Wild, C. Wolf

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Abstract

The Large Early Galaxy Census (LEGA-C) is a Public Spectroscopic Survey of ∼3200 K-band selected galaxies at redshifts z = 0.6 - 1.0 with stellar masses , conducted with VIMOS on ESO's Very Large Telescope. The survey is embedded in the COSMOS field (R.A. = 10h00; ). The 20 hr long integrations produce high-signal-to-noise ratio continuum spectra that reveal ages, metallicities and velocity dispersions of the stellar populations. LEGA-C's unique combination of sample size and depth will enable us for the first time to map the stellar content at large lookback time, across galaxies of different types and star formation activity. Observations started in 2014 December and are planned to be completed by mid 2018, with early data releases of the spectra and value-added products. In this paper we present the science case, the observing strategy, an overview of the data reduction process and data products, and a first look at the relationship between galaxy structure and spectral properties, as it existed 7 Gyr ago.

Original language	English
Article number	29
Journal	Astrophysical Journal, Supplement Series
Volume	223
Issue number	2
DOIs	https://doi.org/10.3847/0067-0049/223/2/29
Publication status	Published - Apr 2016

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Van Der Wel, A., Noeske, K., Bezanson, R., Pacifici, C., Gallazzi, A., Franx, M., Muñoz-Mateos, J. C., Bell, E. F., Brammer, G., Charlot, S., Chauké, P., Labbé, I., Maseda, M. V., Muzzin, A., Rix, H. W., Sobral, D., Sande, J. V. D., Dokkum, P. G. V., Wild, V., & Wolf, C. (2016). THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr. Astrophysical Journal, Supplement Series, 223(2), Article 29. https://doi.org/10.3847/0067-0049/223/2/29

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title = "THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr",

abstract = "The Large Early Galaxy Census (LEGA-C) is a Public Spectroscopic Survey of ∼3200 K-band selected galaxies at redshifts z = 0.6 - 1.0 with stellar masses , conducted with VIMOS on ESO's Very Large Telescope. The survey is embedded in the COSMOS field (R.A. = 10h00; ). The 20 hr long integrations produce high-signal-to-noise ratio continuum spectra that reveal ages, metallicities and velocity dispersions of the stellar populations. LEGA-C's unique combination of sample size and depth will enable us for the first time to map the stellar content at large lookback time, across galaxies of different types and star formation activity. Observations started in 2014 December and are planned to be completed by mid 2018, with early data releases of the spectra and value-added products. In this paper we present the science case, the observing strategy, an overview of the data reduction process and data products, and a first look at the relationship between galaxy structure and spectral properties, as it existed 7 Gyr ago.",

keywords = "galaxies: evolution, galaxies: fundamental parameters, galaxies: general, galaxies: stellar content, surveys",

author = "{Van Der Wel}, A. and K. Noeske and R. Bezanson and C. Pacifici and A. Gallazzi and M. Franx and Mu{\~n}oz-Mateos, {J. C.} and Bell, {E. F.} and G. Brammer and S. Charlot and P. Chauk{\'e} and I. Labb{\'e} and Maseda, {M. V.} and A. Muzzin and Rix, {H. W.} and D. Sobral and Sande, {J. Van De} and Dokkum, {P. G.Van} and V. Wild and C. Wolf",

year = "2016",

month = apr,

doi = "10.3847/0067-0049/223/2/29",

language = "English",

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journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

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Van Der Wel, A, Noeske, K, Bezanson, R, Pacifici, C, Gallazzi, A, Franx, M, Muñoz-Mateos, JC, Bell, EF, Brammer, G, Charlot, S, Chauké, P, Labbé, I, Maseda, MV, Muzzin, A, Rix, HW, Sobral, D, Sande, JVD, Dokkum, PGV, Wild, V & Wolf, C 2016, 'THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr', Astrophysical Journal, Supplement Series, vol. 223, no. 2, 29. https://doi.org/10.3847/0067-0049/223/2/29

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T2 - The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr

AU - Van Der Wel, A.

AU - Noeske, K.

AU - Bezanson, R.

AU - Pacifici, C.

AU - Gallazzi, A.

AU - Franx, M.

AU - Muñoz-Mateos, J. C.

AU - Bell, E. F.

AU - Brammer, G.

AU - Charlot, S.

AU - Chauké, P.

AU - Labbé, I.

AU - Maseda, M. V.

AU - Muzzin, A.

AU - Rix, H. W.

AU - Sobral, D.

AU - Sande, J. Van De

AU - Dokkum, P. G.Van

AU - Wild, V.

AU - Wolf, C.

PY - 2016/4

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N2 - The Large Early Galaxy Census (LEGA-C) is a Public Spectroscopic Survey of ∼3200 K-band selected galaxies at redshifts z = 0.6 - 1.0 with stellar masses , conducted with VIMOS on ESO's Very Large Telescope. The survey is embedded in the COSMOS field (R.A. = 10h00; ). The 20 hr long integrations produce high-signal-to-noise ratio continuum spectra that reveal ages, metallicities and velocity dispersions of the stellar populations. LEGA-C's unique combination of sample size and depth will enable us for the first time to map the stellar content at large lookback time, across galaxies of different types and star formation activity. Observations started in 2014 December and are planned to be completed by mid 2018, with early data releases of the spectra and value-added products. In this paper we present the science case, the observing strategy, an overview of the data reduction process and data products, and a first look at the relationship between galaxy structure and spectral properties, as it existed 7 Gyr ago.

AB - The Large Early Galaxy Census (LEGA-C) is a Public Spectroscopic Survey of ∼3200 K-band selected galaxies at redshifts z = 0.6 - 1.0 with stellar masses , conducted with VIMOS on ESO's Very Large Telescope. The survey is embedded in the COSMOS field (R.A. = 10h00; ). The 20 hr long integrations produce high-signal-to-noise ratio continuum spectra that reveal ages, metallicities and velocity dispersions of the stellar populations. LEGA-C's unique combination of sample size and depth will enable us for the first time to map the stellar content at large lookback time, across galaxies of different types and star formation activity. Observations started in 2014 December and are planned to be completed by mid 2018, with early data releases of the spectra and value-added products. In this paper we present the science case, the observing strategy, an overview of the data reduction process and data products, and a first look at the relationship between galaxy structure and spectral properties, as it existed 7 Gyr ago.

KW - galaxies: evolution

KW - galaxies: fundamental parameters

KW - galaxies: general

KW - galaxies: stellar content

KW - surveys

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U2 - 10.3847/0067-0049/223/2/29

DO - 10.3847/0067-0049/223/2/29

M3 - Article

SN - 0067-0049

VL - 223

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 2

M1 - 29

ER -

THE VLT LEGA-C SPECTROSCOPIC SURVEY: The PHYSICS of GALAXIES at A LOOKBACK TIME of 7 Gyr

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