Results 51 to 60 of about 147,516 (226)
Bulge Growth Through Disc Instabilities in High-Redshift Galaxies [PDF]
, 2015 The role of disc instabilities, such as bars and spiral arms, and the associated resonances, in growing bulges in the inner regions of disc galaxies have long been studied in the low-redshift nearby Universe. There it has long been probed observationally,
F. Bournaud
semanticscholar +1 more source
Early assembly of the most massive galaxies [PDF]
, 2009 The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins +53 more
core +1 more source
Globular clusters as the relics of regular star formation in ‘normal’ high-redshift galaxies [PDF]
, 2015 We present an end-to-end, two-phase model for the origin of globular clusters (GCs). In the model, populations of stellar clusters form in the high-pressure discs of high-redshift ($z>2$) galaxies (a rapid-disruption phase due to tidal perturbations from
J. Kruijssen
semanticscholar +1 more source
Galaxies at High Redshift [PDF]
Astrophysics and Space Science, 1999 Within just the last few years, we have advanced from knowing only a few galaxies at z>2 to having redshifts for nearly 1000 z~2-5 objects. The majority of this sample has been detected through the photometric ``drop-out'' technique used so successfully by Steidel and his collaborators. In addition, a handful of objects have already been detected at
openaire +2 more sources
Low-redshift Lyman continuum leaking galaxies with high [O iii]/[O ii] ratios [PDF]
, 2018 We present observations with the Cosmic Origins Spectrograph onboard the Hubble Space Telescope of five star-forming galaxies at redshifts z in the range 0.2993-0.4317 and with high emission-line flux ratios O32=[OIII]5007/[OII]3727 ~ 8-27 aiming to ...
Y. Izotov +24 more
semanticscholar +1 more source
Dusty Star Forming Galaxies at High Redshift [PDF]
, 2014 Far-infrared and submillimeter wavelength surveys have now established the important role of dusty, star-forming galaxies (DSFGs) in the assembly of stellar mass and the evolution of massive galaxies in the Universe.
C. Casey, D. Narayanan, A. Cooray
semanticscholar +1 more source
The distribution of neutral hydrogen around high-redshift galaxies and quasars in the EAGLE simulation [PDF]
, 2015 The observed high covering fractions of neutral hydrogen (HIHI) with column densities above ∼1017 cm−2 around Lyman-Break Galaxies (LBGs) and bright quasars at redshifts z ∼ 2–3 has been identified as a challenge for simulations of galaxy formation.
A. Rahmati +6 more
semanticscholar +1 more source
The circumgalactic medium of high-redshift galaxies [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2014 Abstract We study the properties of the circumgalactic medium (CGM) of high-z galaxies in the metal enrichment simulations presented in Pallottini et al. At z = 4, we find that the simulated CGM gas density profiles are self-similar, once scaled with the virial radius of the parent dark matter halo.
PALLOTTINI, ANDREA +2 more
openaire +2 more sources
On the road to precision cosmology with high redshift HII galaxies [PDF]
, 2015 We report the first results of a programme aimed at studying the properties of high redshift galaxies with on-going massive and dominant episodes of star formation (HII galaxies).
R. Terlevich +6 more
semanticscholar +1 more source
Advanced Science, EarlyView.A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim +8 more
wiley +1 more source