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相关论文: 350 $\mu$m map of the Ophiuchus molecular cloud: c…

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We investigate the optical properties of Ophiuchus to obtain clues on the formation epoch of this cluster, and compare them to those of the Coma cluster, which is comparable in mass to Ophiuchus but much more disturbed dynamically. Based on…

We present the results of N2H+(1-0) observations of 35 dense molecular cloud cores from the northern and southern hemispheres where massive stars and star clusters are formed. Line emission has been detected in 33 sources, for 28 sources…

天体物理学 · 物理学 2009-11-07 L. Pirogov , I. Zinchenko , P. Caselli , L. E. B. Johansson , P. C. Myers

The combination of the high-resolution ALMA, JWST and HST observations provides unprecedented insights into the connection between individual molecular clouds and their internal stellar populations in nearby galaxies. The molecular clouds…

星系天体物理 · 物理学 2025-07-01 J. W. Zhou , Pavel Kroupa , Sami Dib

We performed a search of star-forming sites influenced by external factors, such as SNRs, HII regions, and cloud-cloud collisions, to understand the star-forming activity in the Galactic center region using the NRO Galactic Center Survey in…

星系天体物理 · 物理学 2015-09-23 Masato Tsuboi , Atsushi Miyazaki , Kenta Uehara

Recent studies seem to suggest that the stellar initial mass function (IMF) in early-type galaxies might be different from a classical Kroupa or Chabrier IMF, i.e. contain a larger fraction of the total mass in low-mass stars. From a…

星系天体物理 · 物理学 2016-08-05 Clio Bertelli Motta , Paul C. Clark , Simon C. O. Glover , Ralf S. Klessen , Anna Pasquali

The aims of this study are to determine the properties and spatial distribution of dense cores in Ori B9, and to estimate their ages and dynamical timescales. The cloud was mapped in the 870 micron continuum with APEX/LABOCA, and selected…

太阳与恒星天体物理 · 物理学 2009-11-17 O. Miettinen , J. Harju , L. K. Haikala , J. Kainulainen , L. E. B. Johansson

We found that in regions of high mass star formation the CS emission correlates well with the dust continuum emission and is therefore a good tracer of the total mass while the N$_2$H$^+$ distribution is frequently very different. This is…

天体物理学 · 物理学 2009-11-11 Igor Zinchenko , Lev Pirogov , Paola Caselli , Lars E. B. Johansson , Sergey Malafeev , Barry Turner

Aims. We present molecular line observations of the southwestern part of the IC 348 young cluster, and we use them together with NIR and mm continuum data to determine the distribution of dense gas, search for molecular outflows, and…

天体物理学 · 物理学 2009-11-11 M. Tafalla , M. S. N. Kumar , R. Bachiller

We have mapped 27 massive star-forming regions associated with water masers using three dense gas tracers: HC3N 10-9, HNC 1-0 and C2H 1-0. The FWHM sizes of HNC clumps and C2H clumps are about 1.5 and 1.6 times higher than those of HC3N,…

太阳与恒星天体物理 · 物理学 2015-03-19 Juan Li , Junzhi Wang , Qiusheng Gu , Zhi-yu Zhang , Xingwu Zheng

We aim to study dust properties of massive star forming regions in the outer Galaxy, in a direction opposite to the Galactic center. We present observations of six outer Galaxy point sources IRAS 01045+6505, 01420+6401, 05271+3059,…

天体物理学 · 物理学 2009-11-13 B. Mookerjea , G. Sandell , J. Stutzki , J. G. A. Wouterloot

We present and discuss the results of the Herschel Gould Belt survey observations in a ~11 deg^2 area of the Aquila molecular cloud complex at d~260 pc, imaged with the SPIRE/PACS cameras from 70 to 500 micron. We identify a complete sample…

Due to its youth, proximity and richness the Orion Nebula Cloud (ONC) is an ideal testbed to obtain a comprehensive view on the Initial Mass Function (IMF) down to the planetary mass regime. Using the HAWK-I camera at the VLT, we have…

星系天体物理 · 物理学 2016-07-27 H. Drass , M. Haas , R. Chini , A. Bayo , M. Hackstein , V. Hoffmeister , N. Godoy , N. Vogt

We present a catalogue of near-infrared photometry of young stars associated with the Ophiuchus molecular cloud, based on observations made with the Hubble Space Telescope NICMOS-3 camera at 1.1 $\mu$m and 1.6 $\mu$m. Our survey covers 0.02…

天体物理学 · 物理学 2009-11-07 Lori E. Allen , Philip C. Myers , James Di Francesco , Robert Mathieu , Hua Chen , Erick Young

We present observations of polarized dust emission at 850 $\mu$m from the L43 molecular cloud which sits in the Ophiuchus cloud complex. The data were taken using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as a part of the BISTRO…

星系天体物理 · 物理学 2023-07-26 Janik Karoly , Derek Ward-Thompson , Kate Pattle , David Berry , Anthony Whitworth , Jason Kirk , Pierre Bastien , Tao-Chung Ching , Simon Coude , Jihye Hwang , Woojin Kwon , Archana Soam , Jia-Wei Wang , Tetsuo Hasegawa , Shih-Ping Lai , Keping Qiu , Doris Arzoumanian , Tyler L. Bourke , Do-Young Byun , Huei-Ru Vivien Chen , Wen Ping Chen , Mike Chen , Zhiwei Chen , Jungyeon Cho , Minho Choi , Youngwoo Choi , Yunhee Choi , Antonio Chrysostomou , Eun Jung Chung , Sophia Dai , Victor Debattista , James Di Francesco , Pham Ngoc Diep , Yasuo Doi , Hao-Yuan Duan , Yan Duan , Chakali Eswaraiah , Lapo Fanciullo , Jason Fiege , Laura M. Fissel , Erica Franzmann , Per Friberg , Rachel Friesen , Gary Fuller , Ray Furuya , Tim Gledhill , Sarah Graves , Jane Greaves , Matt Griffin , Qilao Gu , Ilseung Han , Thiem Hoang , Martin Houde , Charles L. H. Hull , Tsuyoshi Inoue , Shu-ichiro Inutsuka , Kazunari Iwasaki , Il-Gyo Jeong , Doug Johnstone , Vera Konyves , Ji-hyun Kang , Miju Kang , Akimasa Kataoka , Koji Kawabata , Francisca Kemper , Jongsoo Kim , Shinyoung Kim , Gwanjeong Kim , Kyoung Hee Kim , Mi-Ryang Kim , Kee-Tae Kim , Hyosung Kim , Florian Kirchschlager , Masato I. N. Kobayashi , Patrick M. Koch , Takayoshi Kusune , Jungmi Kwon , Kevin Lacaille , Chi-Yan Law , Chang Won Lee , Hyeseung Lee , Yong-Hee Lee , Chin-Fei Lee , Jeong-Eun Lee , Sang-Sung Lee , Dalei Li , Di Li , Guangxing Li , Hua-bai Li , Sheng-Jun Lin , Hong-Li Liu , Tie Liu , Sheng-Yuan Liu , Junhao Liu , Steven Longmore , Xing Lu , A-Ran Lyo , Steve Mairs , Masafumi Matsumura , Brenda Matthews , Gerald Moriarty-Schieven , Tetsuya Nagata , Fumitaka Nakamura , Hiroyuki Nakanishi , Nguyen Bich Ngoc , Nagayoshi Ohashi , Takashi Onaka , Geumsook Park , Harriet Parsons , Nicolas Peretto , Felix Priestley , Tae-Soo Pyo , Lei Qian , Ramprasad Rao , Jonathan Rawlings , Mark Rawlings , Brendan Retter , John Richer , Andrew Rigby , Sarah Sadavoy , Hiro Saito , Giorgio Savini , Masumichi Seta , Ekta Sharma , Yoshito Shimajiri , Hiroko Shinnaga , Mehrnoosh Tahani , Motohide Tamura , Ya-Wen Tang , Xindi Tang , Kohji Tomisaka , Le Ngoc Tram , Yusuke Tsukamoto , Serena Viti , Hongchi Wang , Jintai Wu , Jinjin Xie , Meng-Zhe Yang , Hsi-Wei Yen , Hyunju Yoo , Jinghua Yuan , Hyeong-Sik Yun , Tetsuya Zenko , Guoyin Zhang , Yapeng Zhang , Chuan-Peng Zhang , Jianjun Zhou , Lei Zhu , Ilse de Looze , Philippe Andre , C. Darren Dowell , David Eden , Stewart Eyres , Sam Falle , Valentin J. M. Le Gouellec , Frederick Poidevin , Jean-Francois Robitaille , Sven van Loo

Cores and filamentary structures are the prime birthplaces of stars, and play key roles in the process of star formation. Latest advances in the methods of multi-scale source and filament extraction, and in making high-resolution column…

星系天体物理 · 物理学 2022-05-04 Chang Zhang , Guo-Yin Zhang , Jin-Zeng Li , Xue-Mei Li

The distributions of stars and prestellar cores by mass (initial and dense core mass functions, IMF/DCMF) are among the key factors regulating star formation and are the subject of detailed theoretical and observational studies. Results…

太阳与恒星天体物理 · 物理学 2016-06-02 Andrei Klishin , Igor Chilingarian

The ALMA-IMF Large Program observed the W43-MM2-MM3 ridge, whose 1.3mm and 3mm ALMA 12m array continuum images reach a 2500au spatial resolution. We used both the best-sensitivity and the line-free ALMA-IMF images, reduced the noise with…

Far-infrared and (sub)millimeter fluxes can be used to study dust in protoplanetary disks, the building blocks of planets. Here, we combine observations from the Herschel Space Observatory with ancillary data of 284 protoplanetary disks in…

We present a new census of the Orion Nebula Cluster (ONC) over a large field of view (>30'x30'), significantly increasing the known population of stellar and substellar cluster members with precisely determined properties. We develop and…

星系天体物理 · 物理学 2015-06-03 Nicola Da Rio , Massimo Robberto , Lynne A. Hillenbrand , Thomas Henning , Keivan G. Stassun

In clustered star-forming regions, stellar feedback-such as HII regions/photon-dominated regions (PDRs), and protostellar jets/outflows-shapes cloud structures and influences star formation. Using high-resolution ALMA millimeter and JWST…