SiO maser emission from red supergiants across the Galaxy - I. Targets in massive star clusters

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Table 5

Comparison between RSG LSR velocities determined from SiO maser emission and IR CO absorption.

Object	v_LSR [km s^-1]
	previous	this study	CO
	(43 GHz SiO)	(86 GHz SiO)	(2.29 μm)

FMR2006 1	115^a	116	130^g
FMR2006 2	120^a		114^g
FMR2006 3		112	127^g
FMR2006 4	121^a	121	121^g
FMR2006 13	116^a	113	125^g
X 18	74^a	71

Stephenson 2 DFK 2	103^b	101	111^h
Stephenson 2 DFK 49	101^b	101	109^h
Stephenson 2 DFK 1	93^b	89

MY Cep	–54^c	–52

W Per	–41^d	–40
S Per	–41^e	–41

MDI2009 GLIMPSE13 1	69/72^b	71

Cl Trumpler 27 1	–11^f	–17

Notes. Columns are (left to right): RSG designation and LSR velocities determined from the SiO v = 1,J = 1−0 and 2−1 lines at 43 and 86 GHz, respectively, and the 2.29 μm CO bandhead absorption.

References.

^(a)

Nakashima & Deguchi (2006);

^(b)

Deguchi et al. (2010);

^(c)

Nakashima & Deguchi (2007);

^(d)

Jiang et al. (1996);

^(d)

Kim et al. (2010);

^(f)

Haikala et al. (1994) – velocity based on 86 GHz SiO maser line;

^(g)

Davies et al. (2008);

^(h)

Davies et al. (2007).

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