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Home All issues Volume 526 (February 2011) A&A, 526 (2011) A128 Full HTML
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Table 5

Nebular properties.

Parameter MA 1a BCLMP 49 BCLMP 40 HBW673 BCLMP 720 BCLMP 715 BCLMP651
ne([S II])(cm-3)  <100 159  <100  <100  <100  <100  <100
te([O III])(104 K) 1.35  ±  0.20 – – 1.19  ±  0.11 – – 1.18  ±  0.04
te([S III])(104 K) – – – 1.17  ±  0.12 – – 1.17  ±  0.04
te([O II])(104 K) – – – 1.14  ± 0.08 – – 1.12  ±  0.03
12 + log (O+/H+) 6.80  ±  0.18 – – 7.82  ±  0.26 – – 7.65  ±  0.05
12 + log (O2+/H+) 7.92  ±  0.15 – – 8.50  ±  0.10 – – 7.94  ±  0.04
12 + log (O/H)b 8.00  ±  0.05 8.35 8.65 8.66  ±  0.09 8.54 8.20 8.12  ±  0.03
12 + log (N+/H+) 5.77  ±  0.12 – – 7.08  ±  0.11 – – 6.55  ±  0.03
log (N/O) –1.03  ±  0.10 – – –0.74  ±  0.28 – – –1.10  ±  0.06
12 + log (Ne2+/H+) 7.30  ±  0.20 – – 8.01  ±  0.19 – – 7.40  ±  0.06
log (Ne/O) –0.62  ±  0.09 – – -0.49  ±  0.22 – – –0.54  ±  0.07
12 + log (S+/H+) 5.19  ±  0.10 – – 6.-19  ±  0.11 – – 5.86  ±  0.03
12 + log (S2+/H+) 6.26  ±  0.09 – – 6.18  ±  0.08 – – 5.98  ±  0.03
12 + log (S/H) 6.47  ±  0.10 – – 6.67  ±  0.09 – – 6.26  ±  0.03
12 + log (Ar2+/H+) 5.58  ±  0.11 – – 6.17  ±  0.08 – – 5.76  ±  0.03
12 + log (Ar/H) 5.73  ±  0.11 – – 6.21  ±  0.08 – – 5.79  ±  0.03
log ([OII]/[OIII])c –1.18  ±  0.06 –0.03  ±  0.02 0.61  ±  0.24 –0.82  ±  0.24 0.45  ±  0.04 –0.82  ±  0.09 –0.44  ±  0.03
log ([SII]/[SIII])d 0.03  ±  0.07 0.09  ±  0.03 1.02  ±  0.14 1.06  ±  0.11 1.09  ±  0.04 0.85  ±  0.21 0.92  ±  0.03

Notes. 

(a)

Nebular properties of MA 1 were derived using the emission-line fluxes from the inner, HeII-emitting part of the nebula (see Sect. 4.1.2 for details).

(b)

MA 1, HBW673, BCPLM651: O/H abundance derived using te([OIII]); BCLMP49, BCLMP40, BCLMP720, BCLMP715: O/H derived from Pettini & Pagel (2004) – O3N2 method.

(c)

[OII]λ3727/[OIII]λλ4959, 5007.

(d)

[SII]λλ6717, 6731/[SIII]λ9069.

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