SIMBAD references

2007ApJ...662.1043S - Astrophys. J., 662, 1043-1051 (2007/June-3)

Physical and chemical properties of massive clumps in the AFGL 333 cloud.


Abstract (from CDS):

We have mapped two massive clumps, clump A and B, of the AFGL 333 cloud in the N2H+ J=1-0, CCS JN=43-32, HC3 N J=5-4, and NH3(J,K)=(1,1) and (2,2) lines with the Nobeyama Radio Observatory 45 m telescope. Intense N2H+ emission comes from the two clumps, and its overall distribution is similar to that of C18O J=1-0. On the other hand, the CCS and HC3N emissions are more intense toward clump B than toward clump A. Thus, the column density ratios of [CCS]/[N2H+] and [HC3N]/[N2H+] tend to be higher toward clump B than toward clump A, indicating that clump B is younger than clump A. This is supported by a fact that the 2MASS sources with H-K>2 and the Spitzer 24 µm sources are mostly associated with clump A, whereas only a few such sources exist in clump B. Clump B involves a few dense cores that are dark in the mid-infrared maps. Such cores are thought to be good candidates of starless cores for high- or intermediate-mass stars.

Abstract Copyright:

Journal keyword(s): ISM: Clouds - ISM: Individual: Alphanumeric: W3 - ISM: individual (AFGL 333)

CDS comments: Clumps A, B = [SOY2006] AFGL 333 core A, B.

Simbad objects: 13

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