SIMBAD references

1999ApJ...524L.129M - Astrophys. J., 524, L129-L132 (1999/October-3)

Large-scale mapping observations of the C I 3P1-3P0 line toward Heiles cloud 2 in the Taurus dark cloud.

MAEZAWA H., IKEDA M., ITO T., SAITO G., SEKIMOTO Y., YAMAMOTO S., TATEMATSU K., ARIKAWA Y., ASO Y., NOGUCHI T., SHI S.-C., MIYAZAWA K., SAITO S., OZEKI H., FUJIWARA H., OHISHI M. and INATANI J.

Abstract (from CDS):

A distribution of the neutral carbon atom (C I) in Heiles cloud 2 (HCL2) has been investigated with the Mount Fuji submillimeter-wave telescope. A region of 1.2 deg2 covering a whole region of HCL2 has been mapped with the 3P1-3P0 fine-structure line (492 GHz) of C I. The global extent of the C I emission is similar to that of 13CO, extending from southeast to northwest. However, the C I intensity is found to be rather weak in dense cores traced by the J=1-0 line of C18O. On the other hand, strong C I emission is observed in a south part of HCL2 in which the C18O intensity is fairly weak. The C I/CO abundance ratio is greater than 0.8 for the C I peak, whereas it is 0.1 for the dense cores such as the cyanopolyyne peak. The C I-rich cloud found in the south part may be in the early evolutionary stage of dense core formation where C I has not yet been converted completely into CO. This result implies that formation of dense cores is taking place from north to south in HCL2.

Abstract Copyright:

Journal keyword(s): ISM: Atoms - ISM: Clouds - ISM: Evolution - ISM: Individual: Name: Heiles's cloud 2

Simbad objects: 14

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:1999ApJ...524L.129M and select 'bookmark this link' or equivalent in the popup menu


2019.09.19-15:54:17

© Université de Strasbourg/CNRS

    • Contact