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Related papers: Particularly Efficient Star Formation in M33

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Local starbursts have a higher efficiency of converting gas into stars, as compared to typical star-forming galaxies at a given stellar mass, possibly indicative of different modes of star formation. With the peak epoch of galaxy formation…

(Abridged) We combine data from The HI Nearby Galaxy Survey and the GALEX Nearby Galaxy Survey to study the relationship between atomic hydrogen (HI) and far-ultraviolet (FUV) emission outside the optical radius (r25) in 17 spiral and 5…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 F. Bigiel , A. Leroy , F. Walter , L. Blitz , E. Brinks , W. J. G. de Blok , B. Madore

There exist extremely massive spiral galaxies in isolated environments, with stellar masses several times that of the Milky Way, yet their star formation rates (SFRs) are comparable to or even lower than that of the Milky Way. In this…

Astrophysics of Galaxies · Physics 2025-10-21 Yu Huang , Jiangtao Li , Yan Jiang , Ping Zhou , Jianghui Xu , Liyuan Lu , Yang Yang

We study the star formation and the mass assembly process of 0.3<=z<2.5 galaxies using their IR emission from MIPS 24um band. We used an updated version of the GOODS-MUSIC catalog, extended by the addition of mid-IR fluxes. We compared two…

In the local Universe, galaxy properties show a strong dependence on environment. In cluster cores, early type galaxies dominate, whereas star-forming galaxies are more and more common in the outskirts. At higher redshifts and in somewhat…

We present the results of a CO(1-0) emission survey with the IRAM 30m of 30 galaxies at moderate redshift (z ~ 0.2-0.6) to explore galaxy evolution and in particular the star formation efficiency, in the redshift range filling the gap…

Astrophysics · Physics 2007-09-11 F. Combes , S. Garcia-Burillo , J. Braine , E. Schinnerer , F. Walter , L. Colina , M. Gerin

At the highest stellar masses (log(\mstar) $\gtrsim$ 11.5 \msun), only a small fraction of galaxies are disk-like and actively star-forming objects. These so-called `super spirals' are ideal objects to better understand how galaxy evolution…

Astrophysics of Galaxies · Physics 2023-05-10 Ute Lisenfeld , Patrick M. Ogle , Philip N. Appleton , Thomas H. Jarrett , Blanca M. Moncada-Cuadri

Extragalactic studies have demonstrated there is a moderately tight ($\approx$0.3 dex) relationship between galaxy stellar mass ($M_{\star}$) and star formation rate (SFR) that holds for star-forming galaxies at $M_{\star} \sim 3 \times…

Astrophysics of Galaxies · Physics 2021-05-18 Kaitlyn Shin , Chun Ly , Matthew A. Malkan , Sangeeta Malhotra , Mithi de los Reyes , James E. Rhoads

For four well studied spiral galaxies (M33, M81, M100 and M101) we consider the dependencies of star formation rate (SFR) and star formation efficiency (SFE = SFR/M_{gas}) both on the radial distance R and on some kinematic parameters of…

Astrophysics · Physics 2009-11-11 A. V. Zasov , O. V. Abramova

To better characterize the global star formation (SF) activity in a galaxy, one needs to know not only the star formation rate (SFR) but also the rest-frame, far-infrared (FIR) color (e.g., the 60-to-100 $\mu$m color, $C(60/100)$] of the…

The sample of 566 molecular clouds identified in the CO(2--1) IRAM survey covering the disk of M~33 is explored in detail.The clouds were found using CPROPS and were subsequently catalogued in terms of their star-forming properties as…

Astrophysics of Galaxies · Physics 2018-05-02 Jonathan Braine , Erik Rosolowsky , Pierre Gratier , Edvige Corbelli , Karl Schuster

We present high resolution large scale observations of the molecular and atomic gas in the Local Group Galaxy M33. The observations were carried out using the HERA at the 30m IRAM telescope in the CO(2-1) line achieving a resolution of…

The surface densities of star formation, Sigma_SFR, in 24 dwarf irregular (dIrr) galaxies from the LITTLE THINGS survey are combined with gas surface densities and midplane pressures to examine the correlations found previously for spiral…

Astrophysics of Galaxies · Physics 2025-12-12 Bruce G. Elmegreen , Deidre A. Hunter , Edvige Corbelli

We estimate the star formation efficiency per gravitational free fall time, $\epsilon_{\rm ff}$, from observations of nearby galaxies with resolution matched to the typical size of a Giant Molecular Cloud. This quantity, $\epsilon_{\rm…

We report on the internal distribution of star formation efficiency in IRAS 08339+6517 (hereafter IRAS08), using $\sim$200~pc resolution CO(2-1) observations from NOEMA. The molecular gas depletion time changes by 2 orders-of-magnitude from…

Astrophysics of Galaxies · Physics 2022-04-13 D. B. Fisher , A. D. Bolatto , K. Glazebrook , D. Obreschkow , R. G. Obreschkow , G. G. Kacprzak , N. M. Nielsen

Using the VLA and ALMA, we have obtained CO(2-1), [C II], [N II] line emission and multiple dust continuum measurements in a sample of "normal" galaxies at $z=5-6$. We report the highest redshift detection of low-$J$ CO emission from a…

Astrophysics of Galaxies · Physics 2019-09-25 Riccardo Pavesi , Dominik A. Riechers , Andreas L. Faisst , Gordon J. Stacey , Peter L. Capak

A distance-limited sample of 869 objects from the Updated Nearby Galaxy Catalog is used to characterize the star formation status of the Local Volume population. We present a compiled list of 1217 star formation rate (SFR) estimates for 802…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Igor D. Karachentsev , Elena I. Kaisina

We present a demographic analysis of integrated star formation and gas properties for a sample of galaxies representative of the overall population at z~0. This research was undertaken in order to characterise the nature of star formation…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 M. S. Bothwell , R. C. Kennicutt , J. C. Lee

Studies both of entire galaxies and of local Galactic star formation indicate a dependency of a molecular cloud's star formation rate (SFR) on its dense gas mass. In external galaxies, such measurements are derived from HCN(1-0)…

Astrophysics of Galaxies · Physics 2018-02-14 S. Viaene , J. Forbrich , J. Fritz

We compare the structure of molecular gas at $40$ pc resolution to the ability of gas to form stars across the disk of the spiral galaxy M51. We break the PAWS survey into $370$ pc and $1.1$ kpc resolution elements, and within each we…