The Appearance and Disappearance of Exocomet Gas Absorption

Table 2

ESO data archival observations.

Name		Sp	Distance		Radial velocity	Age	Instrument	Observation date
			(pc)	(km s^−1)	(km s^−1)	Myr
HD 109573 (HR 4796)	5.8	AO	73	152	7.1 ± 1.1	8^a	FEROS	2007-03-09T06:23:49
							FEROS	2007-05-04T02:27:33
							FEROS	2007-05-04T02:43:21
							FEROS	2010-05-27T00:28:30
HD 161868	3.8	AOV	32	210	−7.6 ± 0.3	184^a	FEROS	2005-08-19T23:23:43
							FEROS	2005-08-20T00:00:46
							FEROS	2005-09-09T00:10:46
							FEROS	2006-05-20T05:42:34
							FEROS	2006-09-12T01:43:21
Beta Pictoris (HD 39060)	3.9	A6V	19	122	20.0 ± 0.7	12^b	HARPS	2003-12-23T00:35:22
							HARPS	2003-12-28T00:17:03
							HARPS	2003-12-29T08:43:28

^aChen et al. [26], and ^bRhee et al. [21].