2010ApJ...725..677L

Query : 2010ApJ...725..677L

2010ApJ...725..677L - Astrophys. J., 725, 677-691 (2010/December-2)

Spitzer 70 µm emission as a star formation rate indicator for sub-galactic regions.

LI Y., CALZETTI D., KENNICUTT R.C., HONG S., ENGELBRACHT C.W., DALE D.A. and MOUSTAKAS J.

Abstract (from CDS):

We use Spitzer 24 µm, 70 µm and ground-based Hα data for a sample of 40 SINGS galaxies to establish a star formation rate (SFR) indicator using 70 µm emission for sub-galactic (∼0.05-2 kpc) line-emitting regions and to investigate limits in application. A linear correlation between 70 µm and SFR is found and a star formation indicator SFR(70) is proposed for line-emitting sub-galactic regions as Σ(SFR)(M☉/yr/kpc2 ) = 9.4x10–44 Σ(70)(erg/s/kpc2), for regions with 12 + log(O/H) ≳ 8.4 and Σ(SFR) ≳ 10–3(M☉/yr/kpc2), with a 1σ 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 µm for integrated light from galaxies, we find that there is ∼40% excess 70 µm emission in galaxies, which can be attributed to stellar populations not involved in the current star formation activity.

Abstract Copyright: ∼

Journal keyword(s): galaxies: ISM - H II regions - infrared: galaxies - infrared: ISM - ISM: structure

Simbad objects: 45

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Number of rows : 45
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 NGC 24 EmG 00 09 56.542 -24 57 47.27 12.12 12.20 11.58 11.46 11.5 ~ 269 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 NGC 337 EmG 00 59 50.090 -07 34 40.66 11.97 12.06 11.61 12.4 12.2 ~ 297 2
4 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
5 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
6 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 818 1
7 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
8 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
9 NGC 1512 GiP 04 03 54.281 -43 20 55.86 11.30 11.43 10.54 10.37   ~ 457 1
10 NGC 1566 Sy1 04 20 00.3968473248 -54 56 16.624708764 10.29 10.19 9.73 9.21 10.1 ~ 1051 2
11 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
13 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
14 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
15 NGC 2798 GiG 09 17 22.95407 +41 59 58.9560 13.03 13.04 12.32     ~ 338 3
16 APG 283 PaG 09 17 26.99 +41 59 48.8   12.2       ~ 193 1
17 NGC 2841 LIN 09 22 02.6778711696 +50 58 35.737082868 10.43 10.09 9.22     ~ 1113 1
18 NGC 2976 GiG 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 712 1
19 NGC 3049 EmG 09 54 49.651 +09 16 17.90   13.04       ~ 346 1
20 NGC 3189 GiP 10 18 05.643 +21 49 54.98 12.60 12.12 11.15 11.14   ~ 422 2
21 NGC 3180 GiG 10 18 16.985 +41 25 27.77   10.4       ~ 777 0
22 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
23 Z 266-55 AGN 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 381 1
24 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
25 NGC 3521 EmG 11 05 48.5680991376 -00 02 09.245076540 10.06 9.83 9.02 10.1 9.6 ~ 879 2
26 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
27 NGC 3938 GiG 11 52 49.4335936248 +44 07 14.697085116 10.80 10.90 10.38     ~ 566 1
28 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 1004 2
29 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
30 NGC 4450 LIN 12 28 29.5910654016 +17 05 05.976112020   10.90 10.08     ~ 587 2
31 NGC 4536 H2G 12 34 27.12887 +02 11 16.3680 11.14 11.16 10.55 17.393   ~ 913 3
32 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 667 1
33 M 58 Sy2 12 37 43.59747 +11 49 05.1240 10.80 10.48 9.66     ~ 1140 2
34 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
35 NGC 4725 Sy2 12 50 26.5716367992 +25 30 02.733090588   13.45 12.44     ~ 727 2
36 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
37 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
38 NGC 5474 GiP 14 05 01.608 +53 39 43.95   11.28 10.79     ~ 475 1
39 NGC 5713 GiG 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 421 2
40 IC 4710 AG? 18 28 37.969 -66 58 56.20   12.53   11.33 12.4 ~ 112 1
41 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
42 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
43 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
44 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
45 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2

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