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Open AccessJournal ArticleDOI

Structural and Star-forming Relations since z similar to 3: Connecting Compact Star-forming and Quiescent Galaxies

TLDR
In this article, the authors study the evolution of scaling relations that compare the effective density (Sigma(e), r 9.6 -9.3M(circle dot) kpc(-2), allowing the most efficient identification of compact SFGs and quiescent galaxies at every redshift.
Abstract
We study the evolution of the scaling relations that compare the effective density (Sigma(e), r 9.6 -9.3M(circle dot) kpc(-2), allowing the most efficient identification of compact SFGs and quiescent galaxies at every redshift.

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Improving galaxy morphologies for SDSS with Deep Learning

TL;DR: A morphological catalogue for 670,000 galaxies in the Sloan Digital Sky Survey in two flavours: T-Type, related to the Hubble sequence, and Galaxy Zoo 2 (GZ2 hereafter) classification scheme, provided by combining accurate existing visual classification catalogues with machine learning.
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Star formation is boosted (and quenched) from the inside-out: radial star formation profiles from MaNGA

TL;DR: In this paper, the authors investigated the SFR profiles of 864 galaxies as a function of their position relative to the global star forming main sequence (Delta SFR), and found that for quiescent/passive galaxies that lie at least a factor of 10 below the global main sequence, there is an analogous deficit of star formation throughout the galaxy with the lowest values of Delta Sigma_SFR in the central 3 kpc.
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Morphology and star formation in IllustrisTNG: the build-up of spheroids and discs

TL;DR: In this paper, a kinematical decomposition of the stellar component into a spheroidal and a disc component (spheroid-to-total ratio, S/T) and the concentration of stellar mass density profile (C_{82}$) was proposed to quantify the relationship between galaxy morphology and star formation.
References
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Journal ArticleDOI

Wet Disc Contraction to Galactic Blue Nuggets and Quenching to Red Nuggets

TL;DR: In this paper, the authors studied the origin of high-redshift, compact, quenched spheroids (red nuggets) through the dissipative shrinkage of gaseous discs into compact star-forming systems (blue nuggets).
Journal ArticleDOI

The Cosmological Size and Velocity Dispersion Evolution of Massive Early-type Galaxies

TL;DR: In this article, 40 cosmological re-simulations of individual massive galaxies with present-day stellar masses of M∗ > 6.3 × 10 10 M⊙ were analyzed to investigate the physical origin of the observed strong increase in galaxy sizes and the decrease of the stellar velocity dispersions since redshift z ≈ 2.
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