2006A&A...454L..67S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST10:08:27

2006A&A...454L..67S - Astronomy and Astrophysics, volume 454, L67-70 (2006/8-1)

Low-mass star formation in R Coronae Australis: observations of organic molecules with the APEX telescope.

SCHOEIER F.L., JORGENSEN J.K., PONTOPPIDAN K.M. and LUNDGREN A.A.

Abstract (from CDS):

This paper presents new APEX submillimetre molecular line observations of three low-mass protostars, IRS7A, IRS7B, and IRAS32, in the R Coronae Australis molecular cloud complex. The molecular excitation analysis is performed using a statistical equilibrium radiative transfer code. The derived beam averaged fractional abundances vary by less than a factor of two among the three sources, except those of H2CO and CH3OH, which show differences of about an order of magnitude. The molecular abundances are similar to those typically found in other star-forming regions in the Galaxy, such as the ρ Oph and Perseus molecular clouds. There is a marked difference in the kinetic temperatures derived for the protobinary source IRS7 from H2CO (≃40-60K) and CH3OH (≃20K), possibly indicating a difference in origin of the emission from these two molecules.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: molecules - ISM: abundances - astrochemistry

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 596 1
2 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 465 0
3 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 553 0
4 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1061 0
5 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
6 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1035 1
7 NAME CrA Dark Cloud MoC 19 01 51 -36 58.9           ~ 394 0
8 2MASS J19015545-3657231 Y*O 19 01 55.460 -36 57 23.13           ~ 91 2
9 [NWA2005] SMM 1B Y*O 19 01 56.41 -36 57 28.0           ~ 78 1
10 IRAS 18595-3712 Y*O 19 02 58.706 -37 07 34.67           ~ 43 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-10:08:27

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