The vandels survey: The star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3
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Date
2019
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford Academics
Abstract
We present a Bayesian full-spectral-fitting analysis of 75 massive (M∗>1010.3M⊙) UVJ-selected galaxies at redshifts of 1.0 < z < 1.3, combining extremely deep rest-frame ultraviolet spectroscopy from VANDELS with multiwavelength photometry. By the use of a sophisticated physical plus systematic uncertainties model, constructed within the BAGPIPES code, we place strong constraints on the star-formation histories (SFHs) of individual objects. We first constrain the stellar mass versus stellar age relationship, finding a steep trend towards earlier average formation time with increasing stellar mass (downsizing) of 1.48+0.34−0.39 Gyr per decade in mass, although this shows signs of flattening at M∗>1011M⊙
Description
Keywords
methods: statistical, galaxies: star formation, galaxies: evolution, Astrophysics, Astronomy
Citation
Carnall, A. C. et al. (2019). The vandels survey: The star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3. Monthly Notices of the Royal Astronomical Society, 490(1), 417–439. https://doi.org/10.1093/mnras/stz2544