2011ApJ...736....4H

Query : 2011ApJ...736....4H

2011ApJ...736....4H - Astrophys. J., 736, 4 (2011/July-3)

Detection of two carbon-chain-rich cores: CB130-3 and L673-SMM4.

HIROTA T., SAKAI T., SAKAI N. and YAMAMOTO S.

Abstract (from CDS):

We have found two dense cores, CB130-3 and L673-SMM4, where the carbon-chain molecules are extremely abundant relative to NH3, during a survey observation of radio emission lines of CCS, HC3N, HC5N, and NH3 toward dark cloud cores. Judging from the low NH3/CCS ratios, they are possible candidates for "Carbon-Chain-Producing Regions" (CCPRs) recognized as chemically young dark cloud cores. The deuterium fractionation ratios DNC/HN13C in CB130-3 and L673-SMM4 are found to be 1.28+0.27–0.05 and 1.96+0.32–0.01, respectively, which are comparable to or slightly higher than those in CCPRs found previously. We suggest that the dense cores of CB130-3 and L673-SMM4 are analogous to CCPRs, but their chemical evolutionary phase would be slightly older than those of the dense cores in the Taurus region.

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Journal keyword(s): ISM: abundances - ISM: individual (CB130-3, L673-SMM4) - ISM: molecules - radio lines: ISM

Simbad objects: 22

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Number of rows : 22
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 [BM89] L1498 PoC 04 10 51.4 +25 09 58           ~ 187 0
2 LDN 1498 DNe 04 11.0 +24 58           ~ 306 0
3 LDN 1495B DNe 04 15 36.5 +28 46 06           ~ 50 0
4 NAME [BM89] L1521B cor 04 24 12.7 +26 36 53           ~ 76 0
5 NAME [BM89] L1521E DNe 04 29 21.0 +26 14 19           ~ 116 1
6 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
7 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1872 0
8 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 965 0
9 NAME [BM89] L1544 cor 05 04 22.5 +25 11 36           ~ 437 1
10 NAME Lupus-1A cor 15 42 52.40 -34 07 53.5           ~ 43 0
11 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
12 V* V446 Oph Mi* 16 46 39.1177788096 -11 38 53.045749212     13     M8 35 0
13 GF 4 ISM 18 15.6 -03 34           ~ 2 0
14 LDN 492 DNe 18 15 51 -03 44.4           ~ 50 0
15 [LM99] CB 130-3 cor 18 16 18.0 -02 16 40           ~ 16 0
16 LDN 483 DNe 18 17 35 -04 39.8           ~ 359 0
17 NAME Aql Region reg 18 31.1 -02 10           ~ 456 0
18 NAME Aql Rift DNe 18 32 -01.0           ~ 355 1
19 JCMTSF J192024.7+112432 smm 19 20 24.6 +11 24 34           ~ 7 0
20 V* RR Aql Mi* 19 57 36.0616870728 -01 53 11.339520360     7.80 7.45   M7.5e 305 2
21 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
22 NAME Vul B Cld ~ ~           ~ 10 0

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