Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-06-25
Astronomy and Astrophysics
Astrophysics
Accepted for publication in The Astrophysical Journal
Scientific paper
10.1086/591123
A summary of starburst luminosities based on PAH features is given for 243 starburst galaxies with 0 < z < 2.5, observed with the Spitzer Infrared Spectrograph. Luminosity vLv(7.7um) for the peak luminosity of the 7.7um PAH emission feature is found to scale as log[vLv(7.7um)] = 44.63(+-0.09) + 2.48(+-0.28)log(1+z) for the most luminous starbursts observed. Empirical calibrations of vLv(7.7um) are used to determine bolometric luminosity Lir and the star formation rate (SFR) for these starbursts. The most luminous starbursts found in this sample have log Lir = 45.4(+-0.3) + 2.5(+-0.3)log(1+z), in ergs per s, and the maximum star formation rates for starbursts in units of solar masses per yr are log(SFR) = 2.1(+-0.3) + 2.5(+-0.3)log(1+z), up to z = 2.5. The exponent for pure luminosity evolution agrees with optical and radio studies of starbursts but is flatter than previous results based in infrared source counts. The maximum star formation rates are similar to the maxima determined for submillimeter galaxies; the most luminous individual starburst included within the sample has log Lir = 46.9, which gives a SFR = 3400 solar masses per yr.
Houck James R.
Weedman Daniel W.
No associations
LandOfFree
The Most Luminous Starbursts in the Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Most Luminous Starbursts in the Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Most Luminous Starbursts in the Universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-162767