**Table 2:** Line intensities in Knot 1 of DDO 68.
	PA = 90 $^\circ$ , $\theta$ = 0 $.\!\!^{\prime\prime}$ 8		PA = 0 $^\circ$ , $\theta$ = 1 $.\!\!^{\prime\prime}$ 6
$\lambda_{0}$ (Å) Ion	F( $\lambda$ )/F(H $\beta$ )	I( $\lambda$ )/I(H $\beta$ )	F( $\lambda$ )/F(H $\beta$ )	I( $\lambda$ )/I(H $\beta$ )
3727 [O II]	0.196 $\pm$ 0.009	0.190 $\pm$ 0.011	0.552 $\pm$ 0.028	0.545 $\pm$ 0.030
3869 [Ne III]	...	...	0.184 $\pm$ 0.016	0.182 $\pm$ 0.017
3967 [Ne III] + H7	0.188 $\pm$ 0.011	0.253 $\pm$ 0.019	0.215 $\pm$ 0.011	0.235 $\pm$ 0.019
4101 H $\delta$	0.201 $\pm$ 0.011	0.266 $\pm$ 0.019	0.242 $\pm$ 0.013	0.260 $\pm$ 0.019
4340 H $\gamma$	0.423 $\pm$ 0.023	0.473 $\pm$ 0.029	0.466 $\pm$ 0.024	0.477 $\pm$ 0.027
4363 [O III]	0.047 $\pm$ 0.07	0.046 $\pm$ 0.007	0.058 $\pm$ 0.007	0.057 $\pm$ 0.007
4686 He II	0.022 $\pm$ 0.003	0.022 $\pm$ 0.003	0.033 $\pm$ 0.004	0.033 $\pm$ 0.004
4861 H $\beta$	1.000 $\pm$ 0.005	1.000 $\pm$ 0.006	1.000 $\pm$ 0.004	1.000 $\pm$ 0.005
4959 [O III]	0.646 $\pm$ 0.033	0.616 $\pm$ 0.033	0.624 $\pm$ 0.032	0.616 $\pm$ 0.032
5007 [O III]	1.933 $\pm$ 0.097	1.838 $\pm$ 0.096	1.899 $\pm$ 0.095	1.876 $\pm$ 0.095
5876 He I	0.102 $\pm$ 0.007	0.093 $\pm$ 0.006	0.079 $\pm$ 0.006	0.078 $\pm$ 0.006
6300 [O I]	0.021 $\pm$ 0.003	0.019 $\pm$ 0.003	...	...
6312 [S III]	0.010 $\pm$ 0.003	0.009 $\pm$ 0.003	...	...
6563 H $\alpha$	3.102 $\pm$ 0.159	2.772 $\pm$ 0.161	2.740 $\pm$ 0.139	2.711 $\pm$ 0.151
6584 [N II]	...	...	0.017 $\pm$ 0.034	0.016 $\pm$ 0.034
6678 He I	0.024 $\pm$ 0.004	0.021 $\pm$ 0.003	0.024 $\pm$ 0.004	0.024 $\pm$ 0.004
6717 [S II]	0.035 $\pm$ 0.006	0.031 $\pm$ 0.005	0.034 $\pm$ 0.005	0.033 $\pm$ 0.005
6731 [S II]	0.021 $\pm$ 0.006	0.019 $\pm$ 0.005	0.018 $\pm$ 0.004	0.018 $\pm$ 0.004
7136 [Ar III]	0.026 $\pm$ 0.004	0.023 $\pm$ 0.004	0.019 $\pm$ 0.003	0.019 $\pm$ 0.008
C(H $\beta$ ) dex	0.10 $\pm$ 0.07		0.00 $\pm$ 0.07
EW (abs) Å	5.05 $\pm$ 0.82		1.35 $\pm$ 0.75
F(H $\beta$ )^a	24.8 $\pm$ 1.3		27.2 $\pm$ 1.4
EW (H $\beta$ ) Å	117 $\pm$ 0.6		110 $\pm$ 0.5
Rad. vel. km s^-1	450 $\pm$ 48		378 $\pm$ 33

$\textstyle \parbox{12cm}{ $^a$\space In units of 10$^{-16}$\space ergs\ s$^{-1}$ cm$^{-2}$ . }$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and reduction
	3 Results
	4 Discussion and conclusions
	References