An HST/COS legacy survey of high-velocity ultraviolet absorption in the Milky Way’s circumgalactic medium and the Local Group

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Volume 607 (November 2017)

A&A, 607 (2017) A48

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Table 3

HVC complexes.

HVC complex	l _min	l _max	b _min	b _max	v _min	v _max	d	r _s ^a	f _4π	Det. rate	M _gas ^c	dM_gas/dt^b
	[°]	[°]	[°]	[°]	[km s^-1]	[km s^-1]	[kpc]	[kpc]			[M_⊙]	[M_⊙ yr^-1]

Complex GCN	0	60	–60	–30	–350	–100	...	5	0.028	2/2	1.9 × 10⁶	0.039
Complex GCP (Smith Cloud)	0	60	–30	0	80	200	12	12	0.028	1/1	2.7 × 10⁶	0.027
Magellanic Stream (MS)	0	180	–90	–60	–500	–80	20–100	55	0.333	41/46	3.0 × 10⁹	5.593
	60	120	–60	0	–500	–80
	180	360	–90	–60	80	500
	210	360	–60	–30	150	500
	210	300	–30	0	150	500
Leading Arm (LA) of MS	300	360	–30	0	150	500	20–100	55	0.139	8/10	(see MS)	(see MS)
	240	360	0	60	150	500
Complex C	40	90	15	45	–250	–80	10	10	0.062	31/32	2.7 × 10⁷	0.277
	60	110	25	65	–250	–80
	110	150	35	65	–250	–80
Outer Arm (OA)	45	90	0	15	–150	–80	5	5	0.013	...	...
	90	160	0	20	–150	–80
Complex G	60	105	–20	0	–150	–80	...	5	0.014	...	...
Complex H	105	150	–20	20	–250	–80	≥5	5	0.028	2/2	9.0 × 10⁵	0.018
Complex M	120	200	45	75	–150	–80	3	3	0.037	12/24	1.6 × 10⁵	0.006
Complex A	145	175	30	45	–250	–140	8–10	9	0.010	5/6	2.9 × 10⁶	0.033
	130	145	20	35	–250	–140
Anti-Center (AC)	130	200	0	–60	–500	–80	3–8	5	0.065	2/6	7.7 × 10⁵	0.016
AC Shell + ACO	160	210	–20	20	–130	–80	1	1	0.031	...	...
Complex WE	290	340	–30	0	80	150	≤12	5	0.023	0/1	...
Complex WA + WB	210	260	0	60	80	200	8–20	10	0.046	21/25	7.4 × 10⁶	0.075
HVC toward LMC	275	285	–38	–28	80	150	≤13	9	0.002	...	...
Complex L	300	360	20	60	–200	–80	0.5–1.5	1	0.037	5/7	1.3 × 10⁴	0.001

Notes.

^(a)

HVC information compiled from various sources including Wakker (2001, 2003); Wakker et al. (2007, 2008); Thom et al. (2006, 2008); Richter (2006); Richter et al. (2015); Wakker et al. (in prep.).

^(b)

Distance assumed in our model to calculate the total HVC mass and accretion rate (Sect. 6).

^(c)

See Sect. 6.2.

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