Table 9
HII regions with nebular He II emission in the Local Group.
| Galaxy | Region | 12+log(O/H) | Ionizing source | Spectral type | HeIIλ4686/Hβ [F(Hβ) = 100] | Referencesb |
|
|
||||||
| MW | G2.4+1.4 | 8.45 | WR102 | WO2 | 40–120 | 7, 3, 4, 17 |
| LMC | N44C | 8.32 | X-5? | X-ray Neb? | 2–14 | 14, 6 |
| LMC | N159 | 8.36a | X-1 | HMXB | 5 | 13, 5 |
| LMC | N79 | 8.17-8.27 | BAT99-2 | WN2b(h) | 21–56 | 15, 11 |
| LMC | N206 | 8.36 | BAT99-49 | WN4:b+O8V | 8-10 | 12, 10 |
| SMC | N76 | 7.93 | AB7 | WN4+O6I(f) | 16–24 | 19, 5, 10 |
| SMC | NGC 249 | 8.11a | SMC-WR10 | WN3ha | 16 | |
| IC1613 | S3 | 7.70 | WO3 | 23 | 2, 5, 9 | |
| M 33 | BCLMP38b | 8.39 | MC45 | WC4 | 17 | 18, 1 |
| M 33 | BCLMP90 | 8.50 | no obvious hot star associated | 8 | 18 | |
| M 33 | C001Ab | 8.61 | no obvious hot star associated | 2 | 18 | |
| M 33 | BCLMP208f | 8.07 | no obvious hot star associated | 3 | 18 | |
| M 33 | BCLMP711a | 8.28 | no obvious hot star associated | 4 | 18 | |
| M 33 | MA 1 | 8.00 | MC8 | WNE | 19 | 8 |
| M 33 | HBW673 | 8.66 | no obvious hot star associated | 55 | 8 | |
| M 33 | BCLMP651 | 8.12 | no obvious hot star associated | 11 | 8 | |
Notes.
For LMC N159 and SMC NGC 249, since no metallicity measurement has been reported in the literature, we show the average values of the LMC and SMC oxygen abundance from Russell & Dopita (1990).
(1) Abbott et al. (2004); (2) Davidson & Kinman (1982); (3) Dopita et al. (1990); (4) Esteban et al. (1992); (5) Garnett et al. (1991); (6) Garnett et al. (2000); (7) Johnson (1975); (8) Kehrig et al. (this paper); (9) Kingsburgh & Barlow (1995); (10) Nazé et al. (2003a); (11) Nazé et al. (2003b); (12) Niemela et al. (1991); (13) Pakull & Angebault (1986); (14) Pakull & Motch (1989); (15) Pakull (1991); (16) Pakull (2009); (17) Polcaro et al. (1995); (18) Rosolowsky & Simon (2008); (19) Testor & Pakull (1989).
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