2002A&A...390.1075G

Query : 2002A&A...390.1075G

2002A&A...390.1075G - Astronomy and Astrophysics, volume 3901075-1087 (2002/8-2)

Detection of solid ammonia, methanol, and methane with ISOPHOT.

GUERTLER J., KLAAS U., HENNING T., ABRAHAM P., LEMKE D., SCHREYER K. and LEHMANN K.

Abstract (from CDS):

We report on a search for the NH3 inversion band at 9.0µm, the CH4 band at 7.7µm, and the CH3OH band at 9.7µm in the spectra of 10 heavily obscured stellar objects taken with the spectrophotometer ISOPHOT-S aboard the Infrared Space Observatory (ISO). Four of them show indications of the NH3 inversion band at 9.0µm superimposed on the always strong silicate band. The results show that ammonia ice may be abundant in some cool and dense molecular circumstellar regions. The 9.7µm band of solid CH3OH was detected in 5 of the sources, and also the 7.7µm band of solid CH4 was found in 5 sources. The PHT-S detections were cross-checked against ISO-SWS spectra from archive data. Considering the different beam sizes (24x24"2 versus 14x20"2), there is good agreement.

Abstract Copyright: ∼

Journal keyword(s): stars: circumstellar matter - ISM: dust, extinction - ISM: molecules - ISM: lines and bands - infrared: ISM

Simbad objects: 14

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Number of rows : 14
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 W3 IRS 5 Y*O 02 25 40.54 +62 05 51.4           B1 367 0
2 IRAS 03445+3242 Y*O 03 47 41.603 +32 51 43.79           ~ 215 0
3 V* GV Tau TT* 04 29 23.7314758308 +24 33 00.216011716 19.20         K7 288 0
4 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
5 W 33a Y*O 18 14 39.56547 -17 52 02.2260           ~ 746 0
6 RAFGL 2136 Y*O 18 22 26.52888 -13 30 14.0400           ~ 300 0
7 HH 100 HH 19 01 49.1 -36 58 16           ~ 82 0
8 V* V710 CrA Or* 19 01 50.67792 -36 58 09.6132           K7: 131 0
9 RAFGL 2591 Y*O 20 29 24.8230 +40 11 19.590           ~ 640 0
10 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 668 2
11 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 600 0
12 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 760 2
13 GAL 109.88+02.11 HII 22 56 19.4 +62 02 01           ~ 76 0
14 IRAS 23118+6110 Y*O 23 14 02.09473 +61 27 18.8460           ~ 385 0

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