Deep near-infrared imaging of W3 Main: constraints on stellar cluster formation

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Volume 561 (January 2014)

A&A, 561 (2014) A12

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Table 1

Summary of selected subregions in W3 Main and their photometric completeness limits.

Name^a	α (J2000)	δ (J2000)	Sources	Area	50% J	50% H	50% K_s	Hii regions
	(h m s)	(°′′′)		′ ²	mag	mag	mag

W3 Main	02:25:37.5	+62:05:24	1681	19.9/18.9^b	18.6	17.2	14.9	All
IRS5	02:25:36.9	+62:05:15	358	3.14	19.5	18.7	15.8	M, F, E
IRS4	02:25:28.1	+62:06:47	252	2.98/2.64^b	19.7	19.0	16.8	Ca, C, D, H
IRS2	02:25:48.2	+62:06:40	325	3.10/2.82^b	18.6	17.2	14.9	A
IRS N3	02:25:27.4	+62:03:43	205	2.70	19.5	19.0	17.5	J
IRS N4	02:25:44.8	+62:03:41	184	2.65	19.7	19.0	17.2	K
Control	02:25:41.0	+62:12:32	854	17.37	22.0	20.0	19.5	–

Notes.

^(a)

The locations of the selected regions and the dominant infrared sources (IRS) with respect to the observed field-of-view are shown in the map of Fig. 1.

^(b)

The J-band pointing was slightly offset to the South from the H- and K_s-band pointing. This results in the subregions IRS4 and IRS2 being slightly less well covered in JHK_s than they are in HK_s.

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