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    The vandels survey: The star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3

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    Date
    2019
    Author
    Davé, Romeel
    Carnall, A. C.
    McLure, R. J.
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    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⊙⁠
    URI
    http://hdl.handle.net/10566/8298
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