High resolution observation of 17P/ Holmes during the outburst event in 2007

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Table 2

Oxygen lines ratio in the literature.

Comet^a		r (AU)^b	△ (AU)^c

C/Iras-Araki-Alcock (1)	0.022–0.034	1.02	...
C/1996 B2 Hyakutake (2)	0.12–0.15	1.083–1.002	0.120–0.119
C/1995 O1 Hale-Bopp (3)	0.22–0.18	0.920–0.991	1.322–1.627
C/1999 S4 LINEAR (4)	0.06 ± 0.01	0.97–0.79	1.21–0.45
153P/Ikeya-Zhang (5)	0.12 ± 0.1	0.89	0.43
116P/Wild 4 (6)	0.155 ± 0.007	2.4	0.43
9P/Tempel 1 (7)	0.056 − 0.13 ± 0.1	1.5	0.9
17P/ Holmes (this work)	0.3 ± 0.1	2.6	1.7

^(a)

References: (1) Cochran (1984); (2) Morrison et al. (1997); (3) Zhang et al. (2001); (4) Cochran & Cochran (2001); (5) Capria et al. (2005); (6) Furusho et al. (2006); (7) Capria et al. (2008).

^(b)

Heliocentric distance.

^(c)

Geocentric distance.

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