Planetary nebulae and H ii regions in the spiral galaxy NGC 300 - Clues on the evolution of abundance gradients and on AGB nucleosynthesis

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Volume 552 (April 2013)

A&A, 552 (2013) A12

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Table 3

Line intensities for H ii regions and PNe, relative to Hβ = 1.00¹²³.

Object number²		12		14		20
RA (h m s)		00 54 37.89		00 54 38.91		00 54 41.59
Dec (°′′′)		− 37 40 14.0		− 37 39 43.2		− 37 40 21.4
R/R₂₅		0.33		0.33		0.25
Object type		PN		PN		PN

λ	ion	I/I(Hb)	error	I/I(Hb)	error)	I/I(Hb)	error

3727+	[OII]	0.608	0.150	0.643	0.050	< 0.870
3833.4	H9			0.078	0.039
3868.7	[NeIII]	0.674	0.168	0.796	0.040
3889.1	HeI+H8			0.165	0.033
3970.5	[NeIII]+H7			0.450	0.045
4026.2	HeI			0.043	0.022
4068.6	[SII]	< 0.10		0.061	0.031
4101.7	Hd	0.196	0.098	0.256	0.015	0.255	0.033
4267.1	CII	< 0.10		< 0.050
4340.5	Hg	0.486	0.050	0.478	0.020	0.474	0.033
4363.2	[OIII]	0.172	0.060	0.212	0.020	< 0.075
4471.5	HeI			0.044	0.022
4686.7	HeII	0.632	0.095	0.245	0.015	< 0.027
4711.4	[ArIV]	< 0.10		< 0.030
4740.2	ArIV	< 0.10		0.078	0.039
4861.3	Hb	1.000	0.060	1.000	0.030	1.000	0.040
4958.9	[OIII]	4.700	0.280	3.325	0.033	2.314	0.070
5006.8	[OIII]	14.38	0.860	9.690	0.097	6.772	0.20
5754.7	[NII]
5875.6	HeI			0.148	0.013	0.086	0.009
6300.3	[OI]			0.057	0.008
6312.1	[SIII]			0.022	0.005
6548.3	[NII]			0.174	0.015	0.104	0.010
6562.8	Ha	2.860	0.080	2.855	0.020	2.860	0.080
6583.4	[NII]	0.160	0.080	0.526	0.010	0.283	0.023
6678.1	HeI			0.033	0.006	0.035	0.007
6716.5	[SII]			0.041	0.012	0.118	0.010
6730.8	[SII]			0.085	0.007	0.120	0.010
7065.3	HeI			0.049	0.009	0.106	0.090
7135.8	[ArIII]			0.151	0.008	0.186	0.015
7319+	[OII]			0.100	0.010	0.042	0.007
7330+	[OII]			0.055	0.020	0.077	0.011
9068.6	[SIII]			0.350	0.070	0.533	0.060
9529.8	[SIII]			0.785	0.150	1.207	0.120

c(Hb)		0.00		0.00		1.17
log F(Hb)³		−16.590		−15.920		−16.350

Notes.

⁽¹⁾

< : upper limits, +: both lines, : very uncertain;

⁽²⁾

# as in Table 2 of Peña et al. 2012;

⁽³⁾

units of erg cm^-2 s^-1.

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