A tétel áttekintő adatai

Szerző
dc.contributor.author
Mengyao, Tang 
Szerző
dc.contributor.author
Tie, Liu 
Szerző
dc.contributor.author
Sheng-Li, Qin 
Szerző
dc.contributor.author
Kee-Tae, Kim 
Szerző
dc.contributor.author
Yuefang, Wu 
Szerző
dc.contributor.author
Ken'ichi, Tatematsu 
Szerző
dc.contributor.author
Jinghua, Yuan 
Szerző
dc.contributor.author
Ke, Wang 
Szerző
dc.contributor.author
Harriet, Parsons 
Szerző
dc.contributor.author
Patrick, M Koch 
Elérhetőség dátuma
dc.date.accessioned
2020-08-07T13:27:34Z
Rendelkezésre állás dátuma
dc.date.available
2020-08-07T13:27:34Z
Kiadás
dc.date.issued
2018
Uri
dc.identifier.uri
http://hdl.handle.net/10831/49065
Kivonat
dc.description.abstract
Planck Galactic Cold Clumps (PGCCs) possibly represent the early stages of star formation. To understand better the properties of PGCCs, we studied 16 PGCCs in the L1495 cloud with molecular lines and continuum data from Herschel, JCMT/SCUBA-2, and the PMO 13.7 m telescope. Thirty dense cores were identified in 16 PGCCs from 2D Gaussian fitting. The dense cores have dust temperatures of T-d = 11-14 K, and H-2 column densities of NH2 = (0.36-2.5) x 10(22) cm(-2). We found that not all PGCCs contain prestellar objects. In general, the dense cores in PGCCs are usually at their earliest evolutionary stages. All the dense cores have non-thermal velocity dispersions larger than the thermal velocity dispersions from molecular line data, suggesting that the dense cores may be turbulence-dominated. We have calculated the virial parameter a and found that 14 of the dense cores have alpha < 2, while 16 of the dense cores have alpha > 2. This suggests that some of the dense cores are not bound in the absence of external pressure and magnetic fields. The column density profiles of dense cores were fitted. The sizes of the flat regions and core radii decrease with the evolution of dense cores. CO depletion was found to occur in all the dense cores, but is more significant in prestellar core candidates than in protostellar or starless cores. The protostellar cores inside the PGCCs are still at a very early evolutionary stage, sharing similar physical and chemical properties with the prestellar core candidates.
Nyelv
dc.language
Angol
Cím
dc.title
The Properties of Planck Galactic Cold Clumps in the L1495 Dark Cloud
Típus
dc.type
folyóiratcikk
Változtatás dátuma
dc.date.updated
2020-06-04T12:14:27Z
Megjegyzés
dc.description.note
Department of Astronomy, Yunnan University, Key Laboratory of Astroparticle Physics of Yunnan Province, Kunming, 650091, China Korea Astronomy and Space Science Institute, 776 Daedeokdaero, Yuseong-gu, Daejeon, 34055, South Korea East Asian Observatory, 660 N. A'ohoku Place, Hilo, HI 96720, United States Department of Astronomy, Peking University, Beijing, 100871, China National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China European Southern Observatory, Karl-Schwarzschild-Str. 2, Garching bei München, D-85748, Germany Institute of Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, PR1 2HE, United Kingdom Eötvös Loránd University, Department of Astronomy, Pazmany Peter setany 1/A, Budapest, H-1117, Hungary Konkoly Observatory of the Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary University of Science and Technology, 176 Gajeong-dong, Yuseong-gu, Daejeon, South Korea Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool, L3 5RF, United Kingdom NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom Institut UTINAM, UMR 6213, CNRS, Univ Bourgogne Franche Comte, France School of Physics, University of New South Wales, Sydney, NSW 2052, Australia Cited By :6 Export Date: 19 September 2019 Department of Astronomy, Yunnan University, Key Laboratory of Astroparticle Physics of Yunnan Province, Kunming, 650091, China Korea Astronomy and Space Science Institute, 776 Daedeokdaero, Yuseong-gu, Daejeon, 34055, South Korea East Asian Observatory, 660 N. A'ohoku Place, Hilo, HI 96720, United States Department of Astronomy, Peking University, Beijing, 100871, China National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China European Southern Observatory, Karl-Schwarzschild-Str. 2, Garching bei München, D-85748, Germany Institute of Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, PR1 2HE, United Kingdom Eötvös Loránd University, Department of Astronomy, Pazmany Peter setany 1/A, Budapest, H-1117, Hungary Konkoly Observatory of the Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary University of Science and Technology, 176 Gajeong-dong, Yuseong-gu, Daejeon, South Korea Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool, L3 5RF, United Kingdom NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom Institut UTINAM, UMR 6213, CNRS, Univ Bourgogne Franche Comte, France School of Physics, University of New South Wales, Sydney, NSW 2052, Australia Cited By :6 Export Date: 20 September 2019
Doi azonosító
dc.identifier.doi
10.3847/1538-4357/aaadad
Wos azonosító
dc.identifier.wos
000429040600015
Scopus azonosító
dc.identifier.scopus
85045553131
Mtmt azonosító
dc.identifier.mtmt
3356513
Füzetszám
dc.identifier.issue
2
Folyóiratcím rövidítve
dc.identifier.jabbrev
ASTROPHYS J
Folyóirat
dc.identifier.jtitle
ASTROPHYSICAL JOURNAL
Kötetszám
dc.identifier.volume
856
Kiadás éve
dc.description.issuedate
2018
Szerző szervezeti egysége
dc.contributor.institution
Konkoly Thege Miklós Csillagászati Intézet
Szerző szervezeti egysége
dc.contributor.institution
Csillagászati Tanszék
Szerző intézménye
dc.contributor.department
Konkoly Thege Miklós Csillagászati Intézet
Szerző intézménye
dc.contributor.department
Csillagászati Tanszék


A tételhez tartozó fájlok

The Properties of Planck Galactic Cold Clumps in the L1495 Dark Cloud
 

Ez a tétel a következő gyűjteményekben található meg

A tétel áttekintő adatai