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Title: IMAGING OF THE CCS 22.3 GHz EMISSION IN THE TAURUS MOLECULAR CLOUD COMPLEX

Abstract

Thioxoethenylidene (CCS) is an abundant interstellar molecule and a good tracer of high density and evolutionary stage of dense molecular clouds. It is also a suitable candidate for Zeeman splitting observations for its high splitting factor and narrow thermal line widths. We report here Expanded Very Large Array 22.3 GHz observations of three dense molecular cores TMC-1, TMC-1C, and L1521B in the Taurus molecular cloud complex to image the CCS 2{sub 1}-1{sub 0} transition. For all three sources, the clumpy CCS emission is most likely tracing the starless cores. However, these compact structures account for only {approx}1%-13% of the integrated emission detected in single-dish observations, indicating the presence of significant large-scale diffuse emission in favorable conditions for producing CCS.

Authors:
;  [1];  [2];  [3]
  1. National Radio Astronomy Observatory, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801 (United States)
  2. Center for Astrophysics and Space Astronomy, 593 UCB, University of Colorado Boulder, Boulder, CO 80309 (United States)
  3. Physics Department, DePaul University, 2219 N. Kenmore Ave., Chicago, IL 60614 (United States)
Publication Date:
OSTI Identifier:
21565470
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 739; Journal Issue: 1; Other Information: DOI: 10.1088/2041-8205/739/1/L4; Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CLOUDS; EMISSION; MOLECULES

Citation Formats

Roy, Nirupam, Momjian, Emmanuel, Datta, Abhirup, and Sarma, Anuj P. IMAGING OF THE CCS 22.3 GHz EMISSION IN THE TAURUS MOLECULAR CLOUD COMPLEX. United States: N. p., 2011. Web. doi:10.1088/2041-8205/739/1/L4.
Roy, Nirupam, Momjian, Emmanuel, Datta, Abhirup, & Sarma, Anuj P. IMAGING OF THE CCS 22.3 GHz EMISSION IN THE TAURUS MOLECULAR CLOUD COMPLEX. United States. doi:10.1088/2041-8205/739/1/L4.
Roy, Nirupam, Momjian, Emmanuel, Datta, Abhirup, and Sarma, Anuj P. Tue . "IMAGING OF THE CCS 22.3 GHz EMISSION IN THE TAURUS MOLECULAR CLOUD COMPLEX". United States. doi:10.1088/2041-8205/739/1/L4.
@article{osti_21565470,
title = {IMAGING OF THE CCS 22.3 GHz EMISSION IN THE TAURUS MOLECULAR CLOUD COMPLEX},
author = {Roy, Nirupam and Momjian, Emmanuel and Datta, Abhirup and Sarma, Anuj P.},
abstractNote = {Thioxoethenylidene (CCS) is an abundant interstellar molecule and a good tracer of high density and evolutionary stage of dense molecular clouds. It is also a suitable candidate for Zeeman splitting observations for its high splitting factor and narrow thermal line widths. We report here Expanded Very Large Array 22.3 GHz observations of three dense molecular cores TMC-1, TMC-1C, and L1521B in the Taurus molecular cloud complex to image the CCS 2{sub 1}-1{sub 0} transition. For all three sources, the clumpy CCS emission is most likely tracing the starless cores. However, these compact structures account for only {approx}1%-13% of the integrated emission detected in single-dish observations, indicating the presence of significant large-scale diffuse emission in favorable conditions for producing CCS.},
doi = {10.1088/2041-8205/739/1/L4},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 1,
volume = 739,
place = {United States},
year = {2011},
month = {9}
}