A search for supernova remnants in the nearby spiral galaxy M 74 (NGC 628)

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Table 3:

Relative line intensities and observational parameters for SNRs spectroscopically observed in M 74.
Line	SNR2	SNR3	SNR5
H $\beta$ ( $\lambda$ 4861)	100	100	100
OIII( $\lambda$ 4959)	3	60	50
OIII( $\lambda$ 5007)	27	122	160
NII( $\lambda$ 5200)	-	3	-
He( $\lambda$ 5876)	13	33	9
OI( $\lambda$ 6300)	17	21	32
OI( $\lambda$ 6364)	14	-	7
NII( $\lambda$ 6548)	30	154	56
H $\alpha$ ( $\lambda$ 6563)	288	589	335
NII( $\lambda$ 6583)	48	281	85
SII( $\lambda$ 6716)	92	297	122
SII( $\lambda$ 6731)	41	239	73
E_(B-V)	0.07	0.06	0.06
I(H $\alpha$ )	6.0E-15 erg cm^-2 s^-1	2.9E-15 erg cm^-2 s^-1	2.8E-15 erg cm^-2 s^-1
[SII]/H $\alpha$	0.46	0.91	0.58

Source LaTeX | All tables | In the text

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