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The star formation rate (SFR) is a fundamental property of galaxies and it is crucial to understand the build-up of their stellar content, their chemical evolution, and energetic feedback. The SFR of galaxies is typically obtained by…

Astrophysics of Galaxies · Physics 2015-10-05 Elisabete da Cunha

Obtaining accurate measurements of the initial mass function (IMF) is often considered to be the key to understanding star formation, and a universal IMF is often assumed to imply a universal star formation process. Here, we illustrate that…

Astrophysics of Galaxies · Physics 2015-05-14 M. B. N. Kouwenhoven , S. P. Goodwin

We present multi-wavelength global star formation rate (SFR) estimates for 326 galaxies from the Star Formation Reference Survey (SFRS) in order to determine the mutual scatter and range of validity of different indicators. The widely used…

Astrophysics of Galaxies · Physics 2018-11-07 Smriti Mahajan , M. L. N. Ashby , S. P. Willner , P. Barmby , G. G. Fazio , A. Maragkoudakis , S. Raychaudhury , A. Zezas

We seek to derive star formation rates (SFR) and stellar masses (M_star) in distant galaxies and to quantify the main uncertainties affecting their measurement. We explore the impact of the assumptions made in their derivation with standard…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 V. Buat , S. Heinis , M. Boquien , D. Burgarella , V. Charmandaris , S. Boissier , A. Boselli , D. Le Borgne , G. Morrison

The Star Formation Rate (SFR) is one of the main parameters used to analyze the evolution of galaxies through time. The need for recovering the light reprocessed by dust commonly requires the use of low spatial resolution far-infrared data.…

We present a study of the star formation rate (SFR) for a sample of 16 distant galaxies detected by ISOCAM at 15um in the CFRS0300+00 and CFRS1400+52 fields. Their high quality and intermediate resolution VLT/FORS spectra have allowed a…

Astrophysics · Physics 2009-11-10 H. Flores , F. Hammer , D. Elbaz , C. J. Cesarsky , Y. C. Liang , D. Fadda , N. Gruel

Aims: We investigate the build-up of stellar mass through star formation in field galaxies, galaxy groups, and clusters in order to better understand the physical processes regulating star formation in different haloes. Methods: In order to…

Astrophysics · Physics 2009-09-01 Georg Feulner , Ulrich Hopp , Christine S. Botzler

Properties of CFRS field galaxies up to z=1 are discussed. Estimations of the cosmic star formation rate (SFR) lead to serious problems if they not account for AGN emissions and for light reemitted at IR wavelengths. Deep ISOCAM and VLA…

Astrophysics · Physics 2007-05-23 F. Hammer , H. Flores

We investigate the [OII] emission-line as a star formation rate (SFR) indicator using integrated spectra of 97 galaxies from the Nearby Field Galaxies Survey (NFGS). The sample includes all Hubble types and contains SFRs ranging from 0.01…

Astrophysics · Physics 2008-11-26 Lisa J. Kewley , Margaret J. Geller , Rolf A. Jansen

Star-formation rates (SFRs) of galaxies are commonly calculated by converting the measured Halpha luminosities (L_Halpha) into current SFRs. This conversion is based on a constant initial mass function (IMF) independent of the total SFR. As…

Astrophysics · Physics 2007-09-12 Jan Pflamm-Altenburg , Carsten Weidner , Pavel Kroupa

Star Formation Rate (SFR) inferences are based in the so-called constant SFR approximation, where synthesis models are require to provide a calibration; we aims to study the key points of such approximation to produce accurate SFR…

Astrophysics of Galaxies · Physics 2019-11-01 M. Cervino , A. Bongiovanni , S. Hidalgo

The measured star-formation rates (SFRs) of galaxies comprise an important constraint on galaxy evolution and also on their cosmological boundary conditions. Any available tracer of the SFR depends on the shape of the mass-distribution of…

Astrophysics of Galaxies · Physics 2021-12-22 Pavel Kroupa , Tereza Jerabkova

In most star formation history (SFH) measurements, the reported uncertainties are those due to effects whose sizes can be readily measured: Poisson noise, adopted distance and extinction, and binning choices in the solution itself. However,…

Instrumentation and Methods for Astrophysics · Physics 2015-06-04 Andrew E. Dolphin

We construct a new algorithm for estimating the star formation rate (SFR) of galaxies from their infrared (IR) luminosity by developing the theory of the IR emission from a dusty H II region. The derived formula is ${\rm SFR}/(\MO {\rm…

Astrophysics · Physics 2015-06-24 A. K. Inoue , H. Hirashita , H. Kamaya

Strong constraints on the cosmic star formation history (SFH) have recently been established using ultraviolet and far-infrared measurements, refining the results of numerous measurements over the past decade. Taken together, the most…

Astrophysics · Physics 2010-11-11 Andrew M. Hopkins , John F. Beacom

We study star formation rate (SFR) indicators for Wide-field Infrared Survey Explorer (WISE) 22 \mu m selected, star-forming galaxies at 0.01 < z < 0.3 in the Sloan Digital Sky Survey. Using extinction-corrected H\alpha\ luminosities and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Jong Chul Lee , Ho Seong Hwang , Jongwan Ko

An analytical approach is proposed to study the evolution of the star-forming galaxy (SFG) main sequence (MS) and the fraction of dust-obscured SF up to $z\sim4$. Far-ultraviolet (FUV) and infrared (IR) star formation rates, SFRs, are…

The integrated light of a stellar population, measured through photometric filters that are sensitive to the presence of young stars, is often used to infer the star formation rate (SFR) for that population. However, these techniques rely…

Astrophysics of Galaxies · Physics 2015-06-19 Robert L. da Silva , Michele Fumagalli , Mark R. Krumholz

We construct a model by integrating observational constraints from the Milky Way and nearby galaxies to predict cloud-scale star formation rates (SFRs). In the model, we first estimate the initial total mass of clumps in a cloud based on…

Astrophysics of Galaxies · Physics 2026-02-10 J. W. Zhou , Amelie Saintonge , Sami Dib , Pavel Kroupa

We use a sample of 7 starburst galaxies at intermediate redshifts (z ~ 0.4 and z ~ 0.8) with observations ranging from the observed ultraviolet to 1.4 GHz, to compare the star formation rate (SFR) estimators which are used in the different…

Astrophysics · Physics 2009-11-07 N. Cardiel , D. Elbaz , R. P. Schiavon , C. N. A. Willmer , D. C. Koo , A. C. Phillips , J. Gallego