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相关论文: Dense cores in the L1630 molecular cloud: discover…

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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

Previous modelling has demonstrated that it is difficult to reproduce the SCUBA source counts within the framework of standard hierarchical structure formation models if the sources are assumed to be the high-redshift counterparts of local…

天体物理学 · 物理学 2009-11-07 Ali Kaviani , Martin G. Haehnelt , Guinevere Kauffmann

The association of young T Tauri stars, MBM12A, indicates that L1457 was forming stars not too long ago. With our study we want to find out whether or not there are still signs for ongoing star formation in that cloud. Using the…

星系天体物理 · 物理学 2015-05-20 Andreas Heithausen , Christoph Böttner

We report the discovery of a massive SCUBA core with evidence of inflow and outflow motions. This core is detected by SCUBA at both 450 and 850 micro meter. Barely resolved by the telescope beam at 450 micro meter, it has a size of 10…

天体物理学 · 物理学 2009-11-11 Y. Wu , M. Zhu , Y. Wei , D. Xu , Q. Zhang , J. D. Fiege

We have modeled the emission from dust in pre-protostellar cores, including a self-consistent calculation of the temperature distribution for each input density distribution. Model density distributions include Bonnor-Ebert spheres and…

天体物理学 · 物理学 2009-11-06 Neal J. Evans , Jonathan M. C. Rawlings , Yancy L. Shirley , Lee G. Mundy

We present Submillimeter Array (SMA) observations of seven massive molecular clumps which are dark in the far-infrared for wavelengths up to 70 $\mu$m. Our 1.3 mm continuum images reveal 44 dense cores, with gas masses ranging from 1.4 to…

星系天体物理 · 物理学 2019-12-11 Shanghuo Li , Qizhou Zhang , Thushara Pillai , Ian W. Stephens , Junzhi Wang , Fei Li

In an ongoing effort to identify and study high-mass protostellar candidates we have observed in various tracers a sample of 235 sources selected from the IRAS Point Source Catalog, mostly with dec < -30 deg, with the SEST antenna at…

Using the APEX-12m telescope, continuum maps at 350~$\mu$m of eight gas-dust clouds from the southern hemisphere are obtained. Clouds are associated with the regions of massive star and star cluster formation and have dense cores. Core…

星系天体物理 · 物理学 2023-01-12 L. E. Pirogov

We have obtained 850 and 450 micron continuum maps of 21 low mass cores with SED's ranging from pre-protostellar to Class I (18K < Tbol < 370K), using SCUBA at the JCMT. In this paper we present the maps, radial intensity profiles, and…

天体物理学 · 物理学 2010-04-06 Yancy L. Shirley , Neal J. Evans , Jonathan M. C. Rawlings , Erik M. Gregersen

Using ISOPHOT maps at 100 and 200um and raster scans at 100, 120, 150 and 200um we have detected four unresolved far-infrared sources in the high latitude molecular cloud L183. Two of the sources are identified with 1.3mm continuum sources…

天体物理学 · 物理学 2009-11-07 K. Lehtinen , K. Mattila , D. Lemke , M. Juvela , T. Prusti , R. Laureijs

Observations of dark cloud cores have been carried out in the mid-infrared using ISOCAM and in the far-infrared using ISOPHOT, both aboard the Infrared Space Observatory. The cores are in most cases detected in emission at 200 and 170…

天体物理学 · 物理学 2007-05-23 Aurore Bacmann , Philippe Andre , Derek Ward-Thompson

This is the second in a series of papers presenting results from the SCUBA Local Universe Galaxy Survey. In our first paper we provided 850 micron flux densities for 104 galaxies selected from the IRAS Bright Galaxy Sample and we found that…

天体物理学 · 物理学 2009-11-06 Loretta Dunne , Stephen Eales

We combine new Spitzer Space Telescope observations in the mid- and far-infrared with SCUBA 850 micron observations to improve the measurement of dust temperatures, masses and luminosities for 11 galaxies of the SCUBA Local Universe Galaxy…

宇宙学与河外天体物理 · 物理学 2015-05-13 C. N. A. Willmer , G. H. Rieke , Emeric Le Floc'h , J. L. Hinz , C. W. Engelbracht , Delphine Marcillac , K. D. Gordon

We present 1D radiative transfer modelling of the envelopes of a sample of 18 low-mass protostars and pre-stellar cores with the aim of setting up realistic physical models, for use in a chemical description of the sources. The density and…

天体物理学 · 物理学 2009-11-07 Jes K. Jorgensen , Fredrik L. Schoeier , Ewine F. van Dishoeck

We have discovered two compact sources of shocked H2 2.12-micron emission coincident with Mol 160 (IRAS 23385+6053), a massive star-forming core thought to be a precursor to an ultracompact HII region. The 2.12-micron sources lie within 2"…

星系天体物理 · 物理学 2015-06-03 Grace Wolf-Chase , Michael Smutko

We mapped five massive star forming regions with the SCUBA-2 camera on the James Clerk Maxwell Telescope (JCMT). Temperature and column density maps are obtained from the SCUBA-2 450 and 850 $\mu$m images. Most of the dense clumps we find…

We report the results of a millimeter interferometric survey of compact 3 mm continuum sources in the inner 5.5'x5.5' region of the Serpens core. We detect 32 discrete sources above 4.0 mJy/beam, 21 of which are new detections at millimeter…

天体物理学 · 物理学 2009-10-30 Leonardo Testi , Anneila Sargent

We present observations of 1.2-mm dust continuum emission, made with the Swedish ESO Submillimeter Telescope, towards eighteen luminous IRAS point sources, all with colors typical of compact HII regions and associated with CS(2-1) emission,…

天体物理学 · 物理学 2011-02-11 Guido Garay , Diego Mardones , Kate J. Brooks , Liza Videla , Yanett Contreras

We report the discovery of multiple condensations in the prestellar core candidate SMM1A in the R~CrA cloud, which may represent the earliest phase of core fragmentation observed thus far. The separation between the condensations is between…

太阳与恒星天体物理 · 物理学 2015-05-19 Xuepeng Chen , Hector G. Arce
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