Table 1
Properties and gamma-ray characteristics of Local Group and nearby starburst galaxies (see text).
| Galaxy | d | M HI | M H2 | SFR | F γ | L γ |
|
| kpc | 108M⊙ | 108M⊙ | M⊙ yr-1 | 10-8 ph cm-2 s-1 | 1041 ph s-1 | 10-25 ph s-1 H-atom-1 | |
|
|
|||||||
| MW | ... | 35 ± 4(7) | 14 ± 2(7) | 1−3(19) | ... | 11.8 ± 3.4(28) | 2.0 ± 0.6 |
| M 31 | 780 ± 33(1) | 73 ± 22(8) | 3.6 ± 1.8(14) | 0.35−1(19) | 0.9 ± 0.2 | 6.6 ± 1.4 | 0.7 ± 0.3 |
| M 33 | 847 ± 60(2) | 19 ± 8(9) | 3.3 ± 0.4(9) | 0.26−0.7(20) | < 0.5 | < 5.0 | < 2.9 |
| LMC | 50 ± 2(3) | 4.8 ± 0.2(10) | 0.5 ± 0.1(15) | 0.20−0.25(21) | 26.3 ± 2.0(25) | 0.78 ± 0.08 | 1.2 ± 0.1 |
| SMC | 61 ± 3(4) | 4.2 ± 0.4(11) | 0.25 ± 0.15(16) | 0.04−0.08(22) | 3.7 ± 0.7(26) | 0.16 ± 0.04 | 0.31 ± 0.07 |
| M 82 | 3630 ± 340(5) | 8.8 ± 2.9(12) | 5 ± 4(17) | 13−33(23) | 1.6 ± 0.5(27) | 252 ± 91 | 158 ± 75 |
| NGC 253 | 3940 ± 370(6) | 64 ± 14(13) | 40 ± 8(18) | 3.5−10.4(24) | 0.6 ± 0.4(27) | 112 ± 78 | 9 ± 6 |
References. (1) Stanek & Garnavich (1998); (2) Galleti et al. (2004); (3) Pietrzynski et al. (2009); (4) Hilditch et al. (2005); (5) Karachentsev et al. (2002); (6) Karachentsev et al. (2003); (7) Paladini et al. (2007); (8) Braun et al. (2009); (9) Gratier et al. (2010); (10) Staveley-Smith et al. (2003); (11) Stanimirović et al. (1999); (12) Chynoweth et al. (2008); (13) Combes et al. (1977); (14) Nieten et al. (2006); (15) Fukui et al. (2008); (16) Leroy et al. (2007); (17) Mao et al. (2000); (18) Houghton et al. (1997); (19) Yin et al. (2009); (20) Gardan et al. (2007); (21) Hughes et al. (2007); (22) Wilke et al. (2004); (23) Förster Schreiber et al. (2003); (24) Lenc & Tingay (2006); (25) Abdo et al. (2010b); (26) Abdo et al. (2010a); (27) Abdo et al. (2010d); (28) Strong et al. (2010): range based on GALPROP models with various halo sizes.
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