Follow-up observations toward Planck cold clumps with ground-based radio telescopes
Abstract
The physical and chemical properties of prestellar cores, especially massive ones, are still far from being well understood due to the lack of a large sample. The low dust temperature (14 K) of Planck cold clumps makes them promising candidates for prestellar objects or for sources at the very initial stages of protostellar collapse. We have been conducting a series of observations toward Planck cold clumps (PCCs) with ground-based radio telescopes. In general, when compared with other star forming samples (e.g. infrared dark clouds), PCCs are more quiescent, suggesting that most of them may be in the earliest phase of star formation. However, some PCCs are associated with protostars and molecular outflows, indicating that not all PCCs are in a prestellar phase. We have identified hundreds of starless dense clumps from the mapping survey with the Purple Mountain Observatory (PMO) 13.7-m telescope. Follow-up observations suggest that these dense clumps are ideal targets to search for prestellar objects.
Keywords
Cite
@article{arxiv.1410.6979,
title = {Follow-up observations toward Planck cold clumps with ground-based radio telescopes},
author = {Tie Liu and Yuefang Wu and Diego Mardones and Kee-Tae Kim and Karl M. Menten and Ken Tatematsu and Maria Cunningham and Mika Juvela and Qizhou Zhang and Paul F Goldsmith and Sheng-Yuan Liu and Hua-Wei Zhang and Fanyi Meng and Di Li and Nadia Lo and Xin Guan and Jinghua Yuan and Arnaud Belloche and Christian Henkel and Friedrich Wyrowski and Guido Garay and Isabelle Ristorcelli and Jeong-Eun Lee and Ke Wang and Leonardo Bronfman and L. Viktor Toth and Scott Schnee and Shengli Qin and Shaila Akhter},
journal= {arXiv preprint arXiv:1410.6979},
year = {2014}
}
Comments
APRIM proceeding