Results 11 to 20 of about 1,223,277 (388)

Star Formation Rate Indicators [PDF]

, 2012
What else can be said about star formation rate indicators that has not been said already many times over? The `coming of age' of large ground-based surveys and the unprecedented sensitivity, angular resolution and/or field-of-view of infrared and ...
Calzetti, Daniela
core   +2 more sources

TIME-VARYING DYNAMICAL STAR FORMATION RATE [PDF]

The Astrophysical Journal, 2014
We present numerical evidence of dynamic star formation in which the accreted stellar mass grows superlinearly with time, roughly as t2. We perform simulations of star formation in self-gravitating hydrodynamic and magnetohydrodynamic turbulence that is ...
Eve J. Lee, P. Chang, N. Murray
semanticscholar   +4 more sources

Star-formation rate in compact star-forming galaxies [PDF]

Astrophysics and Space Science, 2018
We use the data for the Hbeta emission-line, far-ultraviolet (FUV) and mid-infrared 22 micron continuum luminosities to estimate star formation rates averaged over the galaxy lifetime for a sample of about 14000 bursting compact star-forming galaxies ...
Izotov, Y. I., Izotova, I. Y.
core   +2 more sources

Variations in the Galactic star formation rate and density thresholds for star formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
The conversion of gas into stars is a fundamental process in astrophysics and cosmology. Stars are known to form from the gravitational collapse of dense clumps in interstellar molecular clouds, and it has been proposed that the resulting star formation ...
A. J. Walsh, Anderson, Balser, Barnes, Bastian, Battersby, Beuther, Beuther, Bigiel, Bland-Hawthorn, Brand, Bressert, Bressert, C. Battersby, C. R. Purcell, Cappellari, Caswell, Caswell, Caswell, Conroy, Crocker, D. Elia, Danielson, De Buizer, De Buizer, Dunham, E. Bressert, E. Lee, E. Schisano, Evans, Ferrière, Foster, Frerking, Gao, Green, Green, Hill, Ho, Huettemeister, Immer, J. Bally, J. M. D. Kruijssen, J. Ott, Jones, Kalberla, Kauffmann, Kennicutt, Kennicutt, Kormendy, Krumholz, Krumholz, L. Cortese, L. Testi, Lada, Launhardt, Lee, Leroy, Longmore, Longmore, Longmore, Lumsden, M. Pestalozzi, Minier, Minier, Molinari, Molinari, Morris, Murray, Murray, N. Murray, Najarro, Narayanan, Norris, Oka, Onodera, Padoan, Peters, Purcell, S. Molinari, S. N. Longmore, Salpeter, Schmidt, Sheth, Shetty, Shetty, Shields, Smith, Sofue, Su, Swinbank, Walsh, Walsh, Wong, Wu, Yusef-Zadeh   +94 more
core   +7 more sources

Theory of the Star Formation Rate [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractThis work presents a new physical model of the star formation rate (SFR), tested with a large set of numerical simulations of driven, supersonic, self-gravitating, magneto-hydrodynamic (MHD) turbulence, where collapsing cores are captured with accreting sink particles.
Paolo Padoan, Åke Nordlund
openalex   +2 more sources

Optical Star Formation Rate Indicators [PDF]

The Astrophysical Journal, 2006
Using integrated optical spectrophotometry for 412 star-forming galaxies at z~0, and fiber-aperture spectrophotometry for 120,846 SDSS galaxies at z~0.1, we investigate the H-alpha, H-beta, [O II] 3727, and [O III] 5007 nebular emission lines and the U-band luminosity as quantitative star-formation rate (SFR) indicators.
Moustakas, John, Kennicutt, Jr., Robert C., Tremonti, Christy A.   +2 more
openaire   +2 more sources

The origin of scatter in the star formation rate–stellar mass relation [PDF]

Monthly notices of the Royal Astronomical Society, 2018
Observations have revealed that the star formation rate (SFR) and stellar mass (M$_{\rm star}$) of star-forming galaxies follow a tight relation known as the galaxy main sequence.
J. Matthee, J. Schaye
semanticscholar   +1 more source

The star formation rates of QSOs

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT We examine the far-infrared (FIR) properties of a sample of 5391 optically selected QSOs in the 0.5 < z < 2.65 redshift range down to log [νLν, 2500(erg s−1)] > 44.7, using SPIRE data from Herschel-ATLAS. We split the sample in a grid of 74 luminosity–redshift bins and compute the average optical–IR spectral
M Symeonidis, N Maddox, M J Jarvis, M J Michałowski, P Andreani, D L Clements, G De Zotti, S Duivenvoorden, J Gonzalez-Nuevo, E Ibar, R J Ivison, L Leeuw, M J Page, R Shirley, M W L Smith, M Vaccari   +15 more
openaire   +5 more sources

The Star Formation Rate in the Gravoturbulent Interstellar Medium [PDF]

Astrophysical Journal, 2018
Stars form in supersonic turbulent molecular clouds that are self-gravitating. We present an analytic determination of the star formation rate (SFR) in a gravoturbulent medium based on the density probability distribution function of molecular clouds ...
B. Burkhart
semanticscholar   +1 more source

The Rate of Star Formation

The Astrophysical Journal, 1959
It is assumed that the rate of star formation for population I varies with a power n of the density of interstellar gas and that the initial luminosity function is time-independent. Direct evidence on the value of n is found in the relative distribution, perpendicular to the galactic plane, of gas and young objects.
M. Schmidt
semanticscholar   +3 more sources