NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T03:51:43 PDT
Help | Comment | NED Home

For refcode 2010ApJ...725..677L:
Retrieve 40 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2010ApJ...725..677L Spitzer 70 micron Emission as a Star Formation Rate Indicator for Sub-galactic Regions Li, Yiming; Calzetti, Daniela; Kennicutt, Robert C.; Hong, Sungryong; Engelbracht, Charles W.; Dale, Daniel A.; Moustakas, John Abstract. We use Spitzer 24 micron, 70 micron and ground-based H{alpha} data for a sample of 40 SINGS galaxies to establish a star formation rate (SFR) indicator using 70 micron emission for sub-galactic (~0.05-2 kpc) line-emitting regions and to investigate limits in application. A linear correlation between 70 micron and SFR is found and a star formation indicator SFR(70) is proposed for line-emitting sub-galactic regions as {SIGMA}(SFR)(M_sun_ yr^-1^ kpc^-2^) = 9.4 x 10^-44^ {SIGMA}(70)(erg s^-1^ kpc^-2^), for regions with 12 + log(O/H) >~ 8.4 and {SIGMA}(SFR) >~ 10^-3^(M_sun_ yr^-1^ kpc^-2^), with a 1{sigma} dispersion around the calibration of ~0.16 dex. We also discuss the influence of metallicity on the scatter of the data. Comparing with the SFR indicator at 70 micron for integrated light from galaxies, we find that there is ~40% excess 70 micron emission in galaxies, which can be attributed to stellar populations not involved in the current star formation activity. Key words: galaxies: ISM, H II regions, infrared: galaxies, infrared: ISM, ISM: structure
Retrieve 40 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home