TY - JOUR
T1 - Evidence for mature bulges and an inside-out quenching phase 3 billion years after the Big Bang
AU - Tacchella, S.
AU - Carollo, C. M.
AU - Renzini, A.
AU - Förster Schreiber, N. M.
AU - Lang, P.
AU - Wuyts, S.
AU - Cresci, G.
AU - Dekel, A.
AU - Genzel, R.
AU - Lilly, S. J.
AU - Mancini, C.
AU - Newman, S.
AU - Onodera, M.
AU - Shapley, A.
AU - Tacconi, L.
AU - Woo, J.
AU - Zamorani, G.
N1 - Publisher Copyright:
© 2015, American Association for the Advancement of Science. All rights reserved.
PY - 2015/4/17
Y1 - 2015/4/17
N2 - Most present-day galaxies with stellar masses ≥1011 solar masses show no ongoing star formation and are dense spheroids. Ten billion years ago, similarly massive galaxies were typically forming stars at rates of hundreds solar masses per year. It is debated how star formation ceased, on which time scales, and how this "quenching " relates to the emergence of dense spheroids. We measured stellar mass and star-formation rate surface density distributions in star-forming galaxies at redshift 2.2 with ∼1-kiloparsec resolution. We find that, in the most massive galaxies, star formation is quenched from the inside out, on time scales less than 1 billion years in the inner regions, up to a few billion years in the outer disks. These galaxies sustain high star-formation activity at large radii, while hosting fully grown and already quenched bulges in their cores.
AB - Most present-day galaxies with stellar masses ≥1011 solar masses show no ongoing star formation and are dense spheroids. Ten billion years ago, similarly massive galaxies were typically forming stars at rates of hundreds solar masses per year. It is debated how star formation ceased, on which time scales, and how this "quenching " relates to the emergence of dense spheroids. We measured stellar mass and star-formation rate surface density distributions in star-forming galaxies at redshift 2.2 with ∼1-kiloparsec resolution. We find that, in the most massive galaxies, star formation is quenched from the inside out, on time scales less than 1 billion years in the inner regions, up to a few billion years in the outer disks. These galaxies sustain high star-formation activity at large radii, while hosting fully grown and already quenched bulges in their cores.
UR - http://www.scopus.com/inward/record.url?scp=84927720831&partnerID=8YFLogxK
U2 - 10.1126/science.1261094
DO - 10.1126/science.1261094
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:84927720831
SN - 0036-8075
VL - 348
SP - 314
EP - 317
JO - Science
JF - Science
IS - 6232
ER -