Results 51 to 60 of about 1,223,277 (388)

On star formation rates in dwarf galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2001
We present evolutionary synthesis models of starbursts on top of old stellar populations to investigate in detailed time evolution the relation between Ha luminosity and star formation rate (SFR). The models show that several effects have an impact on the ratio between L(Ha) and SFR. Metallicity different from solar abundance, a time delay between star
Weilbacher, Peter M.   +1 more
openaire   +3 more sources

Star Formation Rates in Nearby Markarian Galaxies [PDF]

open access: yesAstrophysics, 2014
15 pages, 7 ...
Karachentseva, V. E.   +2 more
openaire   +2 more sources

Outer Rings in Early-Type Disk Galaxies: Star Formation Rate

open access: yesOpen Astronomy, 2016
The total ring star formation rates and their surface densities are determined for 34 early-type disk galaxies with outer stellar rings which were detected in the UV with the GALEX space telescope. The total level of the integrated star formation rate in
Kostiuk I. P., Sil’chenko O. K.
doaj   +1 more source

A remarkably flat relationship between the average star formation rate and AGN luminosity for distant X-ray AGN. [PDF]

open access: yes, 2015
In this study, we investigate the relationship between the star formation rate (SFR) and AGN luminosity (LAGNLAGN) for ∼2000 X-ray detected AGN.
F. Stanley   +8 more
semanticscholar   +1 more source

Molecular Clouds and Star Formation Rate in Disk Galaxies

open access: yesOpen Astronomy, 2016
We use N-body/hydrodynamic simulations of a Milky Way-like galaxy to study the physical properties of giant molecular clouds and star formation rate on different spatial scales.
Vasiliev E. O.   +2 more
doaj   +1 more source

The Star Formation Law in Molecule-Poor Galaxies [PDF]

open access: yes, 2013
In this paper, I investigate the processes that regulate the rate of star formation in regions of galaxies where the neutral interstellar medium is predominantly composed of non-star-forming HI.
Krumholz, Mark R.
core   +1 more source

The evolution of the equivalent width of the Hα emission line and specific star formation rate in star-forming galaxies at 1 < z < 5 [PDF]

open access: yes, 2015
We present the results of a study which uses spectral energy distribution (SED) fitting to investigate the evolution of the equivalent width (EW) of the Halpha emission line in star-forming galaxies over the redshift interval 1 =1 in the CANDELS UDS and ...
E. Mármol-Queraltó   +5 more
semanticscholar   +1 more source

The Reliability of [C II] as a Star Formation Rate Indicator

open access: yesOpen Astronomy, 2011
We present a calibration of the star formation rate (SFR) as a function of the [C II] 157.74 μm luminosity for a sample of 24 star-forming galaxies in the nearby universe.
De Looze Ilse   +4 more
doaj   +1 more source

What Sets the Star Formation Rate of Molecular Clouds? The Density Distribution as a Fingerprint of Compression and Expansion Rates

open access: yesThe Astrophysical Journal, 2023
We use a suite of 3D simulations of star-forming molecular clouds, with and without stellar feedback, magnetic fields, and driven turbulence, to study the compression and expansion rates of the gas as functions of density.
Sabrina M. Appel   +5 more
doaj   +1 more source

STAR FORMATION RATE AND DYNAMICAL MASS OF 108 SOLAR MASS BLACK HOLE HOST GALAXIES AT REDSHIFT 6 [PDF]

open access: yes, 2015
We present ALMA observations of two moderate-luminosity quasars at redshift 6. These quasars, from the Canada–France High-z Quasar Survey (CFHQS), have black hole masses of ∼ 10 8 M ⊙ ?> .
C. Willott, J. Bergeron, A. Omont
semanticscholar   +1 more source

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