2004ApJS..154..579A

Query : 2004ApJS..154..579A

2004ApJS..154..579A - Astrophys. J., Suppl. Ser., 154, 579-584 (2004/October-0)

A search for H2CO 6 centimeter emission toward young massive stellar objects.

ARAYA E., HOFNER P., LINZ H., SEWILO M., WATSON C., CHURCHWELL E., OLMI L. and KURTZ S.

Abstract (from CDS):

A survey for H2CO 6 cm emission toward young massive stellar objects has been conducted using the 305 m Arecibo Telescope. We report detection of emission toward IRAS 18566+0408, only the fifth source in the Galaxy known to show H2CO 6 cm emission. A cross-scan shows that the size of the emitting region is smaller than the C-band Arecibo half-power beamwidth (i.e., θs<1'). We detect extended H2CO 6 cm absorption around and toward the emitter position. We detect H2CO 6 cm absorption features toward all 15 sources observed. Three of the sources exhibit complex absorption profiles that could be due to absorption partially filled by emission.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: Molecules - Radio Lines: ISM

Nomenclature: Table 1: [AHL2004] JHHMM+DD N=3.

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
2 CORNISH G029.9559-00.0168 Y*O 18 46 04.18 -02 39 21.3           ~ 385 0
3 IRAS 18472-0022 HII 18 49 50.7 -00 19 09           ~ 18 0
4 RAFGL 5542 Y*O 18 53 37.88832 +01 50 30.5844           ~ 78 0
5 IRAS 18517+0437 SFR 18 54 13.8 +04 41 32           ~ 89 0
6 AGAL G034.757+00.024 cor 18 54 40.76 +01 38 05.0           ~ 41 0
7 IRAS 18553+0414 cor 18 57 53.37 +04 18 15.7           ~ 36 0
8 IRAS 18566+0408 Y*O 18 59 09.95520 +04 12 15.6240           ~ 143 0
9 AGAL G039.388-00.141 cor 19 03 45 +05 40.7           ~ 58 1
10 [AHL2004] J1904+05 Cld 19 04 08.3 +05 09 44           ~ 1 0
11 IRAS 19092+0841 Rad 19 11 37.4 +08 46 30           ~ 30 0
12 [AHL2004] J1916+11 Cld 19 16 01.6 +11 10 39           ~ 2 0
13 GAL 048.93-00.50 Cld 19 23 02.7 +13 58 00           ~ 3 0
14 IRAS 20051+3435 * 20 07 04.5 +34 44 45           ~ 31 0
15 IRAS 20081+2720 HII 20 10 11.5 +27 29 06           ~ 43 1
16 Mol 118 Rad 20 12 31.3 +35 54 46           ~ 8 0
17 NGC 7538 OpC 23 13 37 +61 30.0           ~ 920 1

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