1999ApJ...523..107T

Query : 1999ApJ...523..107T

1999ApJ...523..107T - Astrophys. J., 523, 107-113 (1999/September-3)

Age and dust degeneracy for starburst galaxies solved?

TAKAGI T., ARIMOTO N. and VANSEVICIUS V.

Abstract (from CDS):

We present a newly built spectral evolution model of galaxies that includes both stellar and dust effects. Applying the model to 22 nearby starburst galaxies shows that far-infrared (FIR) luminosity of galaxies helps to break the age-dustiness degeneracy. We have derived a unique solution of age and the dustiness for each starburst galaxy. The resulting starburst ages and optical depths are in the range 10≤t (Myr)≤500 and 0.5≤τV≤5.0, respectively. The result is robust and is almost independent of model assumptions such as dust distributions, extinction curves, and burst strengths. With the rapidly growing sensitivity of submillimeter detectors, it should become possible in the near future to determine the age and τV of star-forming galaxies at redshifts z≃3 and beyond. Accurate estimates of τV for Lyman-break galaxies and high-z galaxies might require a substantial revision of the previously claimed picture of star formation history over the Hubble time.

Abstract Copyright: ∼

Journal keyword(s): ISM: Dust, Extinction - Galaxies: ISM - Galaxies: Starburst - Galaxies: Stellar Content - Radiative Transfer

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 IC 1586 bCG 00 47 56.301 +22 22 22.51   15.0       ~ 77 0
2 MCG-02-03-019 bCG 00 48 35.430 -12 42 59.77   15.5       ~ 109 0
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 Mrk 357 SyG 01 22 40.5874370808 +23 10 14.691256572   15.76 15.40     ~ 94 0
5 IC 214 AGN 02 14 05.53344 +05 10 23.8692   14.4       ~ 157 0
6 NGC 1140 AGN 02 54 33.5271666624 -10 01 43.142143908 12.41 12.84 12.49 13.6 13.5 ~ 303 1
7 NGC 1510 GiP 04 03 32.640 -43 24 00.58 14.23 13.63 13.24 13.09   ~ 201 1
8 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
9 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
10 NGC 4194 rG 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 467 2
11 NGC 4385 AGN 12 25 42.8099950872 +00 34 21.278141652   14.63 14.12 13.1 12.8 ~ 285 0
12 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
13 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
14 NGC 5860 EmG 15 06 33.73 +42 38 29.2   14.2       ~ 89 0
15 NGC 6052 rG 16 05 12.8715178104 +20 32 32.607297132 13.01 13.44 13.00     ~ 362 2
16 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 446 1
17 NGC 6217 AGN 16 32 39.2100852960 +78 11 53.487076092   14.37 13.88     ~ 320 0
18 NGC 7250 AG? 22 18 17.776 +40 33 44.66 13.18 13.22 12.58     ~ 126 1
19 Z 475-1 AGN 22 52 34.7122076328 +24 43 49.401829632   15.69 15.22     ~ 101 0
20 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
21 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
22 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
23 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 608 0
24 Z 382-8 H2G 23 56 59.619 -02 05 01.98   15.4       ~ 45 0

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