SIMBAD references

1998ApJ...507L..83M - Astrophys. J., 507, L83-L87 (1998/November-1)

A 13CO (J = 1-0) search for small molecular clouds toward the Chamaeleon-Musca dark cloud complex.

MIZUNO A., HAYAKAWA T., YAMAGUCHI N., KATO S., HARA A., MIZUNO N., YONEKURA Y., ONISHI T., KAWAMURA A., TACHIHARA K., OBAYASHI A., XIAO KE-C., OGAWA H. and FUKUI Y.

Abstract (from CDS):

We have completed a 13CO (J=1-0) survey for molecular clouds toward the Chamaeleon-Musca Dark Cloud Complex, covering an ∼16°x17° area with the NANTEN millimeter-wave telescope. The major result is a discovery of 25 small dense clouds widely distributed over ∼11°x13° (∼28x33 pc at ∼140 pc), in addition to the four previously known large dark clouds. The small clouds show a good spatial correlation with the 33 isolated X-ray-emitting T Tauri stars (TTSs), and most (∼70%) of the 33 TTSs located within 4 pc of the small clouds' boundaries are likely formed in the small clouds. It is argued that the average density, ≳103 cm–3, and mass, ∼20 M, of the small clouds are large enough to form stars in them. The apparent lack of the associated molecular gas for the remaining TTSs is plausibly explained as a result of cloud dissipation due to the outflow activity of the X-ray TTSs. Based on the present findings, we conclude that the X-ray TTSs were formed in the small dense clouds and that it is not necessary to invoke a runaway TTS hypothesis.

Abstract Copyright:

Journal keyword(s): ISM: Clouds - ISM: Molecules - ISM: Individual: Name: Chamaeleon-Musca Dark Cloud Compex - Stars: Formation

CDS comments: Star F34 = WKK F34

Simbad objects: 17

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:1998ApJ...507L..83M and select 'bookmark this link' or equivalent in the popup menu


2020.11.29-18:38:20

© Université de Strasbourg/CNRS

    • Contact