2003A&A...404L..17P


Query : 2003A&A...404L..17P

2003A&A...404L..17P - Astronomy and Astrophysics, volume 404, L17-20 (2003/6-2)

Detection of abundant solid methanol toward young low mass stars.

PONTOPPIDAN K.M., DARTOIS E., VAN DISHOECK E.F., THI W.-F. and D'HENDECOURT L.

Abstract (from CDS):

We present detections of the absorption band at 3.53µm due to solid methanol toward three low-mass young stellar objects located in the Serpens and Chameleon molecular cloud complexes. The sources were observed as part of a large spectroscopic survey of ≃40 protostars. This is the first detection of solid methanol in the vicinity of low mass (M≲1M) young stars and shows that the formation of methanol does not depend on the proximity of massive young stars. The abundances of solid methanol compared to water ice for the three sources are in the range 15-25% which is comparable to those for the most methanol-rich massive sources known. The presence of abundant methanol in the circumstellar environment of some low mass young stars has important consequences for the formation scenarios of methanol and more complex organic species near young solar-type stars.

Abstract Copyright:

Journal keyword(s): astrochemistry - circumstellar matter - dust, extinction - ISM: molecules - infrared: ISM

CDS comments: SVS 4 = [SVS76] Ser 4. SVS 4-5, 4-9 = [EC89] SVS 4-5, 4-9.

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 RAFGL 5163 Y*O 05 40 27.45024 -07 27 30.0564           ~ 141 1
2 V* GM Cha Or* 11 09 28.55424 -76 33 28.1376           M3.5-M6.5 52 0
3 * gam Mus SB* 12 32 28.0129260853 -72 07 58.763241944 3.12 3.73 3.88 3.91 4.08 B5V+A: 146 0
4 W 33a Y*O 18 14 39.56547 -17 52 02.2260           ~ 698 0
5 [EC89] SVS 4-5 Y*O 18 29 57.59 +01 13 00.6           ~ 35 1
6 NAME Serpens SVS 4 IR Cluster Cl* 18 29 57.84 +01 12 48.1           ~ 43 1
7 2MASS J18295785+0112514 Y*O 18 29 57.858 +01 12 51.40           ~ 60 3
8 RAFGL 7009S HII 18 34 20.911 -05 59 42.23           ~ 214 0
9 * alf Sgr PM* 19 23 53.1753985532 -40 36 57.373929695 3.54 3.841 3.943     B8V 100 0

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