Astrochemical Properties of Planck Cold Clumps

	Astrochemical Properties of Planck Cold Clumps
	Tatematsu, Ken'ichi 1,2; Liu, Tie 3; Ohashi, Satoshi 4; Sanhueza, Patricio 1; Quang Nguyen Luong 1,3; Hirota, Tomoya 1,2; Liu, Sheng-Yuan 5; Hirano, Naomi 5; Choi, Minho 3; Kang, Miju 3
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2017-02-01
卷号	228 期号:2
关键词	ISM: clouds ISM: molecules ISM: structure stars: formation
ISSN号	0067-0049
通讯作者	Tatematsu, Ken'ichi(Natl Astron Observ Japan, Natl Inst Nat Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan)
产权排序	第20完成单位
英文摘要	We observed 13 Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N2H+ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC3N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differently with respect to the N2H+ emission. The CCS emission, which is known to be abundant in starless molecular cloud cores, is often very clumpy in the observed targets. We made deep single-pointing observations in DNC, (HNC)-C-13, N2D+, and cyclic-C3H2 toward nine clumps. The detection rate of N2D+ is 50%. Furthermore, we observed the NH3 emission toward 15 Planck cold clumps to estimate the kinetic temperature, and confirmed that most targets are cold (less than or similar to 20 K). In two of the starless clumps we observed, the CCS emission is distributed as it surrounds the N2H+ core (chemically evolved gas), which resembles the case of L1544, a prestellar core showing collapse. In addition, we detected both DNC and N2D+. These two clumps are most likely on the verge of star formation. We introduce the chemical evolution factor (CEF) for starless cores to describe the chemical evolutionary stage, and analyze the observed Planck cold clumps.
学科主题	天文学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	MOLECULAR CLOUD CORES ; STAR-FORMING REGIONS ; INFRARED DARK CLOUDS ; 45-M RADIO TELESCOPE ; DENSE CORES ; DEUTERIUM FRACTIONATION ; CHEMICAL VARIATION ; MAPPING OBSERVATIONS ; PHYSICAL CONDITIONS ; ANGULAR-MOMENTUM
收录类别	SCI
原文出处	http://stacks.iop.org/0067-0049/228/i=2/a=12?key=crossref.9741bbefe6251ca333b9b89cb576ea76
语种	英语
WOS记录号	WOS:000397312100002
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9988]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 2.Department of Astronomical Science, SOKENDAI (The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 3.Korea Astronomy and Space Science Institute, Daedeokdaero 776, Yuseong, Daejeon 305-348, Korea 4.Department of Astronomy, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan 5.Academia Sinica Institute of Astronomy and Astrophysics, 11F of Astronomy-Mathematics Building, AS/NTU. No.1, Section 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C. 6.Centre for Astrophysics Research, Science & Technology Research Institute, University of Hertfordshire, Hatfield, AL10 9AB, UK 7.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK 8.Department of Astronomy, Peking University, 100871, Beijing, China 9.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China 10.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
推荐引用方式 GB/T 7714	Tatematsu, Ken'ichi,Liu, Tie,Ohashi, Satoshi,et al. Astrochemical Properties of Planck Cold Clumps[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2017,228(2).
APA	Tatematsu, Ken'ichi.,Liu, Tie.,Ohashi, Satoshi.,Sanhueza, Patricio.,Quang Nguyen Luong.,...&TRAO Key Science Program TOP Colla.(2017).Astrochemical Properties of Planck Cold Clumps.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,228(2).
MLA	Tatematsu, Ken'ichi,et al."Astrochemical Properties of Planck Cold Clumps".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 228.2(2017).