Results 71 to 80 of about 210,144 (261)

Dozens of compact and high velocity-dispersion early-type galaxies in Sloan Digital Sky Survey

, 2015
Aims. We aim at finding candidates of potential survivors of high-redshift compact galaxies in SDSS, as targets for more detailed follow-up observations. Methods.
Bosch, Remco C. E. van den, Mieske, Steffen, Saulder, Christoph   +2 more
core   +1 more source

The problematic growth of dust in high-redshift galaxies [PDF]

, 2016
Dust growth via accretion of gas species has been proposed as the dominant process to increase the amount of dust in galaxies. We show here that this hypothesis encounters severe difficulties that make it unfit to explain the observed UV and IR ...
A. Ferrara, S. Viti, C. Ceccarelli
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, GALLERANI, SIMONA, FERRARA, ANDREA   +2 more
openaire   +2 more sources

Multi-wavelength Observations of Dusty Star Formation at Low and High Redshift

, 2000
This paper examines what can be learned about high-redshift star formation from the small fraction of high-redshift galaxies' luminosities that is emitted at accessible wavelengths.
Acosta-Pulido J. A., Aussel H., Blain A. W., Calzetti D., Charles C. Steidel, Hughes D. H., Kells W., Klaas U., Kurt L. Adelberger, Lawrence A., Madau P., Oakes D., Rifatto A., Rigopoulou D., Sanders D. B., Steidel C. C.   +15 more
core   +2 more sources

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

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, Seungin Jee, Yongnam Ahn, In‐Suh Lee, Dongeon Kim, Seongchong Park, Yujin Jung, In‐Ho Bae, Se‐Woong Baek   +8 more
wiley   +1 more source

Why do high-redshift galaxies show diverse gas-phase metallicity gradients? [PDF]

, 2016
Recent spatially resolved observations of galaxies at z ∼ 0.6–3 reveal that high-redshift galaxies show complex kinematics and a broad distribution of gas-phase metallicity gradients.
Xiangcheng Ma, P. Hopkins, R. Feldmann, P. Torrey, C. Faucher-Giguére, Dusan Keres Caltech, U. Zurich, Berkeley, Mit, Northwestern, Ucsd   +10 more
semanticscholar   +1 more source

Reionisation and High-Redshift Galaxies: The View from Quasar Absorption Lines [PDF]

Publications Astronomical Society of Australia, 2015
Determining when and how the first galaxies reionised the intergalactic medium promises to shed light on both the nature of the first objects and the cosmic history of baryons.
G. Becker, J. Bolton, A. Lidz
semanticscholar   +1 more source

Unveiling the Cosmic Chemistry. II. “Direct” Te-based Metallicity of Galaxies at 3 < z < 10 with JWST/NIRSpec

The Astrophysical Journal
We report the detection of the [O iii ] auroral line in 42 galaxies within the redshift range of 3 < z < 10. These galaxies were selected from publicly available JWST data releases, including the JADES and PRIMAL surveys, and observed using both the low ...
Priyanka Chakraborty, Arnab Sarkar, Randall Smith, Gary J. Ferland, Michael McDonald, William Forman, Mark Vogelsberger, Paul Torrey, Alex M. Garcia, Mark Bautz, Adam Foster, Eric Miller, Catherine Grant   +12 more
doaj   +1 more source

Galaxies at High Redshifts

, 1998
To appear in "Large Scale Structure: Tracks and Traces", Proceedings of the 12th Potsdam Cosmology Workshop, eds. V. M"uller, S. Gottl"ober, J. P. M"ucket, J. Wambsganss, (Singapore: World Scientific), 1998. 9 LaTeX pages, including 5 figures.
Yahil, A., Lanzetta, K. M., Fernandez-Soto, A.   +2 more
openaire   +2 more sources

The escape of ionising radiation from high-redshift dwarf galaxies [PDF]

, 2011
The UV escape fraction from high-redshift galaxies plays a key role in models of cosmic reionisation. Because it is currently not possible to deduce the escape fractions during the epoch of reionisation from observations, we have to rely on numerical ...
Agertz, Andersen, Barkana, Becker, Bergvall, Bland-Hawthorn, Bland-Hawthorn, Bolton, Bruzual, C. J. H. Kruip, Chen, Choudhury, Ciardi, Clarke, Deharveng, Dohm-Palmer, Dohm-Palmer, Dove, Dwek, Dwek, F. I. Pelupessy, Fan, Fan, Fan, Fan, Fernandez-Soto, Fujita, Fynbo, G. Altay, Gehrz, Giallongo, Gnedin, Grimes, Heckman, Hernquist, Hirashita, Hurwitz, Höfner, Iwata, J.-P. Paardekooper, Komatsu, Labbé, Leitherer, Madau, Maio, Maiolino, Malkan, Mattsson, Mayer, McKee, Michałowski, Mo, Morgan, Navarro, Nozawa, Oesch, Paardekooper, Page, Pasetto, Pei, Pelupessy, Pelupessy, Razoumov, Razoumov, Razoumov, Richard, Ricotti, Shapley, Siana, Siana, Silich, Spergel, Springel, Srbinovsky, Srbinovsky, Steidel, Todini, Valiante, van Zee, Welty, Welty, Wheeler, Wise, Woitke, Wolfire, Wood, Wyithe, Yajima, Yajima, Yan   +89 more
core   +1 more source