中文
相关论文

相关论文: Submillimetre continuum emission from Class 0 sour…

200 篇论文

It is widely assumed that dust opacities in molecular clouds follow a power-law profile with an index, $\beta$. Recent studies of the Orion Molecular Cloud (OMC) 2/3 complex, however, show a flattening in the spectral energy distribution…

We have used SCUBA to survey an area of 50 square arcmin, detecting 19 sources down to a 3sigma sensitivity limit of 3.5 mJy at 850 microns. We have used Monte-Carlo simulations to assess the effect of source confusion and noise on the…

天体物理学 · 物理学 2009-10-31 Stephen Eales , Simon Lilly , Tracy Webb , Loretta Dunne , Walter Gear , David Clements , Min Yun

Aims: We explore the long-term evolution of young protoplanetary disks with different approaches to computing the thermal structure determined by various cooling and heating processes in the disk and its surroundings. Methods: Numerical…

地球与行星天体物理 · 物理学 2020-07-01 Eduard I. Vorobyov , Ryoki Matsukoba , Kazuyuki Omukai , Manuel Guedel

Aims: We compare the far-infrared to sub-millimetre dust emission properties measured in high Galactic latitude cirrus with those determined in a sample of 204 late-type DustPedia galaxies. The aim is to verify if it is appropriate to use…

Whether or not supernovae contribute significantly to the overall dust budget is a controversial subject. Submillimetre (submm) observations, sensitive to cold dust, have shown an excess at 450 and 850 microns in young remnants Cassiopeia A…

星系天体物理 · 物理学 2015-05-13 H. L. Gomez , L. Dunne , R. Ivison , E. M. Reynoso , M. A. Thompson , B. Sibthorpe , S. A. Eales , T. M. DeLaney , S. Maddox , K. Isaak

A quantitative derivation of the intrinsic properties of galaxies related to their fundamental building blocks, gas, dust and stars is essential for our understanding of galaxy evolution. A fully self-consistent derivation of these…

星系天体物理 · 物理学 2023-10-06 Christopher J. Inman , Cristina C. Popescu , Mark T. Rushton , David Murphy

Early dust grain growth in protostellar envelopes infalling on young discs has been suggested in recent studies, supporting the hypothesis that dust particles start to agglomerate already during the Class 0/I phase of young stellar objects…

We present an unbiased census of deeply embedded protostars in Perseus, Serpens, and Ophiuchus, assembled by combining large-scale 1.1 mm Bolocam continuum and Spitzer Legacy surveys. We identify protostellar candidates based on their…

天体物理学 · 物理学 2014-11-18 Melissa L. Enoch , Neal J. Evans , Anneila I. Sargent , Jason Glenn

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 present the results of a 2.7 mm continuum interferometric survey of 24 young stellar objects in 11 fields. The target objects range from deeply embedded Class 0 sources to optical T Tauri sources. This is the first sub-arcsecond survey…

天体物理学 · 物理学 2009-10-12 Leslie W. Looney , Lee G. Mundy , W. J. Welch

Dust is an important tracer of the structure of interstellar clouds, as well as a central factor in the thermal balance and chemistry of the clouds. Our knowledge of the dust properties is nevertheless incomplete, especially regarding the…

星系天体物理 · 物理学 2026-02-18 M. Juvela , N. Ysard

Accurate modeling of the spectrum of thermal dust emission at millimeter wavelengths is important for improving the accuracy of foreground subtraction for CMB measurements, for improving the accuracy with which the contributions of…

星系天体物理 · 物理学 2016-08-31 N. Odegard , A. Kogut , D. T. Chuss , N. J. Miller

Prestellar cores, the birthplace of Sun-like stars, form from the fragmentation of the filamentary structure that composes molecular clouds, from which they must inherit at least partially the kinematics. Furthermore, when they are on the…

星系天体物理 · 物理学 2022-12-28 E. Redaelli , A. Chacón-Tanarro , P. Caselli , M. Tafalla , J. E. Pineda , S. Spezzano , O. Sipilä

In this first research note of a series of two, we conduct optical/UV investigations of the spectropolarimetric signatures emerging from the structure of quasars (Elvis 2000) applied to a purely theoretical, dusty model. We aim to explore…

高能天体物理现象 · 物理学 2013-10-08 F. Marin , R. W. Goosmann

In the current era of high-z galaxy discovery with JWST and ALMA, our ability to study the stellar populations and ISM conditions in a diverse range of galaxies at Cosmic Dawn has rapidly improved. At the same time, the need to understand…

星系天体物理 · 物理学 2024-03-05 Sidney Lower , Desika Narayanan , Chia-Yu Hu , George C. Privon

We investigate the multi-wavelength properties of a sample of 450-\mu m selected sources from the SCUBA-2 Cosmology Legacy Survey (S2CLS). A total of 69 sources were identified above 4\sigma\ in deep SCUBA-2 450-\mu m observations…

We present a study of the dust properties of 12 classical and superbubble HII regions in the Large Magellanic Cloud. We use infrared photometry from Spitzer (8, 24, 70, and 160 \mum bands), obtained as part of the Surveying the Agents of a…

We present observations of the spiral galaxy NGC 7331 using the Sub-millimetre Common User Bolometer Array (SCUBA) on the James Clark Maxwell Telescope. We have detected a dust ring of 45 arcsec radius (3.3 kpc) at wavelengths of 450 and…

天体物理学 · 物理学 2009-10-30 S. Bianchi , P. B. Alton , J. I. Davies , M. Trewhella

Extinction maps at 8 micron from the Spitzer Space Telescope show that many Class 0 protostars exhibit complex, irregular, and on-axisymmetric structure within the densest regions of their dusty envelopes. Many of the systems have highly…

星系天体物理 · 物理学 2015-05-19 John J. Tobin , Lee Hartmann , Edwin Bergin , Leslie W. Looney , Hsin-Fang Chiang , Fabian Heitsch
‹ 上一页 1 8 9 10 下一页 ›