Searches for HCl and HF in comets 103P/Hartley 2 and C/2009 P1 (Garradd) with the Herschel Space Observatory

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Table 1

Log of the observations.

Comet	Date (UT)	r_h	Δ^a	Species/line	ObsId	HIFI	Mode	Int. time
	yyyy/mm/dd.ddd	(AU)	(AU)		13422#	band		(min)

103P/Hartley 2	2010/10/30.626−30.662	1.059	0.131	H³⁵Cl, H³⁷Cl J(1−0)^b	08589	1b	Point	52
C/2009P1 (Garradd)	2012/02/17.053−17.369	1.727	1.356	HF J(1−0)	39306/07	5a	Point	453
C/2009P1 (Garradd)	2012/02/17.393−17.417	1.727	1.356	H₂O 1₁₁−0₀₀	39309	4b	Mapping	34
C/2009P1 (Garradd)	2012/02/22.745−23.004	1.762	1.308	H³⁵Cl, H³⁷Cl J(1−0)^b	40372/73	1b	Point	372
C/2009P1 (Garradd)	2012/02/23.009−23.196	1.763	1.306	H₂O 2₁₁−2₀₂	40375	2b	Point	269
C/2009P1 (Garradd)	2012/02/23.202−23.448	1.764	1.305	H₂O, H₂¹⁸O 1₁₁−0₀₀	40377	4b	Point	353

Notes.

^(a)

Distance from Herschel.

^(b)

Also includes the 3₂−2₁ A⁻, 13_-1−12_-1 E, and 13₀ − 12₀ E lines of CH₃OH.

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