Massive stars in the giant molecular cloud G23.3−0.3 and W41

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Table 1

Surveyed regions (see Table 4 of Messineo et al. 2010) and supernova remnants.

Overdensity	RA[J2000]	Dec[J2000]	Rad (′)	SNR	Reference

REG1/[BDS2003]118	18 34 15.1	−08 20 42	1.2	G23.5667−0.0333 (SNR5)	1
GLIMPSE9Large	18 34 09.6	−09 13 53	3.0^a	border of G22.7−0.2 (SNR2)	new
				near G22.7583−0.4917 (SNR3)
GLIMPSE9 (cluster)	18 34 09.6	−09 13 53	0.3		2, 3
REG2	18 34 41.1	−08 34 22	4.0	border of W41	2
REG4/GLIMPSE10	18 34 31.6	−08 46 47	5.0	core of W41	2, 3
REG5	18 34 20.0	−08 59 48	5.0	G22.9917−0.3583 (SNR4)	2
REG7/[BDS2003]117	18 34 27.7	−09 15 52	2.0^b	core of G22.7583−0.4917 (SNR3)	2, 1
RSGCX1	18 33 08.9	−09 09 14	4.5	core of G22.7−0.2 (SNR2)	new

Notes.

^(a)

A larger region enclosing the GLIMPSE9 cluster was surveyed.

^(b)

The quoted radius encloses only the bulk of the nebulosity seen at 3.6 μm.

Reference. (1) Bica et al. (2003); (2) Messineo et al. (2010); (3) Mercer et al. (2005).

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