Results 31 to 40 of about 1,223,277 (388)

Stellar Absorption Line Analysis of Local Star-forming Galaxies: The Relation between Stellar Mass, Metallicity, Dust Attenuation, and Star Formation Rate [PDF]

open access: yes, 2017
We analyze the optical continuum of star-forming galaxies in the Sloan Digital Sky Survey by fitting stacked spectra with stellar population synthesis models to investigate the relation between stellar mass, stellar metallicity, dust attenuation, and ...
H. Jabran Zahid   +4 more
semanticscholar   +1 more source

Properties of the Environment of Galaxies in Clusters of Galaxies CL 0024+1654 and RX J0152.7−1357

open access: yesJournal of Mathematical and Fundamental Sciences, 2021
We report the results of combined analyses of X-ray and optical data of two galaxy clusters, CL 0024+1654 and RX J0152.7−1357 at redshift z = 0.395 and z = 0.830, respectively, offering a holistic physical description of the two clusters.
Premana Wardayanti Premadi   +2 more
doaj   +1 more source

Converting Hα Luminosities into Star Formation Rates [PDF]

open access: yesThe Astrophysical Journal, 2007
The recent finding that the IGIMF (integrated galaxial initial stellar mass function) composed of all newly formed stars in all young star clusters has, in dependence of the SFR, a steeper slope in the high mass regime than the underlying canonical IMF of each star cluster offers new insights into the galactic star formation process: The classical ...
Pflamm-Altenburg, Jan   +2 more
openaire   +3 more sources

Supernova Driving. IV. The Star-formation Rate of Molecular Clouds [PDF]

open access: yes, 2017
We compute the star-formation rate (SFR) in molecular clouds (MCs) that originate ab initio in a new, higher-resolution simulation of supernova-driven turbulence.
P. Padoan   +3 more
semanticscholar   +1 more source

The Gas Accretion Rate of Galaxies over z ≈ 0–1.3

open access: yesThe Astrophysical Journal Letters, 2023
We present here estimates of the average rates of accretion of neutral gas onto main-sequence galaxies and the conversion of atomic gas to molecular gas in these galaxies at two key epochs in galaxy evolution: (i) z ≈ 1.3–1.0, toward the end of the epoch
Aditya Chowdhury   +2 more
doaj   +1 more source

Calibration of star formation rate tracers for short- and long-lived star formation episodes [PDF]

open access: yes, 2009
To derive the history of star formation in the Universe a set of calibrated star formation rate tracers at different wavelengths is required. The calibration has to consistently take into account the effects of extinction, star formation regime (short or
Mas-Hesse, J. M., Oti-Floranes, H.
core   +1 more source

OBSERVATIONAL EVIDENCE OF DYNAMIC STAR FORMATION RATE IN MILKY WAY GIANT MOLECULAR CLOUDS [PDF]

open access: yes, 2016
Star formation on galactic scales is known to be a slow process, but whether it is slow on smaller scales is uncertain. We cross-correlate 5469 giant molecular clouds (GMCs) from a new all-sky catalog with 256 star-forming complexes (SFCs) to build a ...
Eve J. Lee   +2 more
semanticscholar   +1 more source

Predicting Quiescence: The Dependence of Specific Star Formation Rate on Galaxy Size and Central Density at 0.5 < z < 2.5 [PDF]

open access: yes, 2016
In this paper, we investigate the relationship between star formation and structure, using a mass-complete sample of 27,893 galaxies at 0.5 < z < 2.5 selected from 3D-HST.
K. Whitaker   +11 more
semanticscholar   +1 more source

The Effect of Local Galaxy Surface Density on Star Formation for HI selected galaxies [PDF]

open access: yes, 2006
We present the result of investigations into two theories to explain the star formation rate-density relationship. For regions of high galaxy density, either there are fewer star forming galaxies, or galaxies capable of forming stars are present but some
Doyle, Marianne T.   +1 more
core   +3 more sources

The star formation rate density from z = 1 to 6 [PDF]

open access: yes, 2016
We use 3035 Herschel-SPIRE 500 μm sources from 20.3 deg² of sky in the HerMES Lockman, ES1 and XMM-LSS areas to estimate the star formation rate density at z = 0–6. 500 μm sources are associated first with 350 and 250 μm sources, and then with Spitzer 24
M. Rowan‐Robinson   +8 more
semanticscholar   +1 more source

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