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J/MNRAS/462/3766    List of galaxies with star forming regions     (Cook+, 2016)

The connection between galaxy environment and the luminosity function slopes of star-forming regions. Cook D.O., Dale D.A., Lee J.C., Thilker D., Calzetti D., Kennicutt R.C. <Mon. Not. R. Astron. Soc., 462, 3766-3799 (2016)> =2016MNRAS.462.3766C (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Star Forming Region Keywords: galaxies: dwarf - galaxies: irregular - Local Group - galaxies: spiral - galaxies: star clusters: general - galaxies: star formation Abstract: We present the first study of GALEX far-ultraviolet (FUV) luminosity functions of individual star-forming regions within a sample of 258 nearby galaxies spanning a large range in total stellar mass and star formation properties. We identify ∼65000 star-forming regions (i.e. FUV sources), measure each galaxy's luminosity function, and characterize the relationships between the luminosity function slope (α) and several global galaxy properties. A final sample of 82 galaxies with reliable luminosity functions are used to define these relationships and represent the largest sample of galaxies with the largest range of galaxy properties used to study the connection between luminosity function properties and galaxy environment. We find that α correlates with global star formation properties, where galaxies with higher star formation rates and star formation rate densities (ΣSFR) tend to have flatter luminosity function slopes. In addition, we find that neither stochastic sampling of the luminosity function in galaxies with low-number statistics nor the effects of blending due to distance can fully account for these trends. We hypothesize that the flatter slopes in high ΣSFR galaxies is due to higher gas densities and higher star formation efficiencies which result in proportionally greater numbers of bright star-forming regions. Finally, we create a composite luminosity function composed of star-forming regions from many galaxies and find a break in the luminosity function at brighter luminosities. However, we find that this break is an artefact of varying detection limits for galaxies at different distances. Description: The local volume legacy (LVL) sample consists of 258 of our nearest galaxy neighbours reflecting a statistically complete, representative sample of the local universe. The sample selection and description are detailed in Dale et al. (2009, Cat. J/ApJ/703/517). The full LVL sample and basic properties are listed in Table 1. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 60 258 General galaxy properties
See also: J/ApJ/703/517 : The Spitzer Local Volume Legacy: IR photometry (Dale+, 2009) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name Galaxy name 23- 24 I2 h RAh Right ascension (J2000) 26- 27 I2 min RAm Right ascension (J2000) 29- 33 F5.2 s RAs Right ascension (J2000) 36 A1 --- DE- Declination sign (J2000) 37- 38 I2 deg DEd Declination (J2000) 40- 41 I2 arcmin DEm Declination (J2000) 43- 46 F4.1 arcsec DEs Declination (J2000) 49- 53 F5.2 Mpc Dist Distance from Kennicutt et al. (2008, Cat. J/ApJS/178/247) 59- 60 I2 --- Ttype Optical morphology from Kennicutt et al. (2008, Cat. J/ApJS/178/247)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Mar-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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