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Related papers: Submillimetre continuum emission from Class 0 sour…

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Deep submillimeter (submm) continuum imaging observations of the starburst galaxy M82 are presented at 350, 450, 750 and 850 micron wavelengths, that were undertaken with the Submillimetre Common-User Bolometer Array (SCUBA) on the James…

Astrophysics · Physics 2015-05-13 Lerothodi L. Leeuw , E. Ian Robson

We present key results from the Herschel Orion Protostar Survey (HOPS): spectral energy distributions (SEDs) and model fits of 330 young stellar objects, predominantly protostars, in the Orion molecular clouds. This is the largest sample of…

Context: The study of dust emission at millimeter wavelengths is important to shed light on the dust properties and physical structure of pre-stellar cores, the initial conditions in the process of star and planet formation. Aims: Using two…

We study the predicted sub-mm emission from massive galaxies in a Lambda-CDM universe, using hydrodynamic cosmological simulations. Assuming that most of the emission from newly formed stars is absorbed and reradiated in the rest-frame…

Astrophysics · Physics 2007-05-23 Mark A. Fardal , Neal Katz , David H. Weinberg , Romeel Davé , Lars Hernquist

Massive stars form whilst they are still embedded in dense envelopes. As a result, the roles of rotation, mass loss and accretion in massive star formation are not well understood. This study evaluates the source of the Q-band, lambda=19.5…

Solar and Stellar Astrophysics · Physics 2015-06-04 H. E. Wheelwright , W. J. de Wit , R. D. Oudmaijer , M. G. Hoare , S. L. Lumsden , T. Fujiyoshi , J. L. Close

[Abridged] We present a new approach to investigate the content and spatial distribution of dust in structurally unresolved star-forming galaxies from the observed dependence of integrated spectral properties on galaxy inclination. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Jacopo Chevallard , Stephane Charlot , Benjamin Wandelt , Vivienne Wild

Observational signatures of the circumstellar material (CSM) around Type Ia supernovae (SNe Ia) provide a unique perspective on their progenitor systems. The pre-supernova evolution of the SN progenitors may naturally eject CSM in most of…

High Energy Astrophysical Phenomena · Physics 2022-06-08 Maokai Hu , Lifan Wang , Xiaofeng Wang

We provide a library of some 7000 SEDs for starbursts and ultra luminous galaxies (http://www.eso.org/~rsiebenm/sb_models). Its purpose is to quickly obtain estimates of the basic parameters, such as luminosity, size and dust or gas mass…

Astrophysics · Physics 2007-05-23 Ralf Siebenmorgen , Endrik Kruegel

To investigate the nature of starbursts' dust, we constructed a model of the stars and dust in starburst galaxies and applied it to 30 observed starburst spectral energy distributions (SEDs). The starburst model was constructed by combining…

Astrophysics · Physics 2008-11-26 K. D. Gordon , D. Calzetti , A. N. Witt

We have collected continuum data of a sample of D-type symbiotic stars. By modelling their spectral energy distribution in a colliding-wind theoretical scenario we have found the common characteristics to all the systems: 1) at least two…

Solar and Stellar Astrophysics · Physics 2015-05-14 R. Angeloni , M. Contini , S. Ciroi , P. Rafanelli

We present a study of the structure and dynamics of the dense gas surrounding the HH 211-mm source, using VLA observations of the ammonia (1,1) and (2,2) inversion transitions. We find the envelope around this Class 0 source has an…

Solar and Stellar Astrophysics · Physics 2015-05-20 Joel D. Tanner , Hector G. Arce

In contemporary sub-stellar model atmospheres, dust growth occurs through neutral gas-phase surface chemistry. Recently, there has been a growing body of theoretical and observational evidence suggesting that ionisation processes can also…

Earth and Planetary Astrophysics · Physics 2018-04-11 Craig R. Stark , Declan A. Diver

We propose a new amorphous dust emission model based on the soft-potential (SP) model, applicable in the long-wavelength range from the far-infrared to the microwave. The SP model is widely accepted in material physics to explain amorphous…

Astrophysics of Galaxies · Physics 2025-09-12 Masashi Nashimoto

We present Spitzer images of the Taurus Complex (TC) and take advantage of the sensitivity and spatial resolution of the observations to characterize the diffuse IR emission across the cloud. This work highlights evidence of dust evolution…

We have worked out evolutionary synthesis models of the broad-band spectral energy distribution of elliptical galaxies over the whole frequency range from UV to far--IR. Internal extinction and far--IR re--emission by interstellar dust have…

Astrophysics · Physics 2009-10-22 P. Mazzei , G. De Zotti , C. Xu

A one-dimensional method for reconstructing the structure of prestellar and protostellar clouds is presented. The method is based on radiative transfer computations and a comparison of theoretical and observed intensity distributions at…

Instrumentation and Methods for Astrophysics · Physics 2015-05-20 Ya. N. Pavlyuchenkov , D. S. Wiebe , A. M. Fateeva , T. S. Vasyunina

We have observed the dark cloud Barnard 68 with SCUBA at 850 um and with SIMBA at 1.2 mm. The submillimetre and millimetre dust emission correlate well with the extinction map of Alves, Lada and Lada (2001).The A_V/850um correlation is…

Astrophysics · Physics 2009-11-07 S. Bianchi , J. Goncalves , M. Albrecht , P. Caselli , R. Chini , D. Galli , M. Walmsley

We have measured continuum flux densities of a high-mass protostar candidate, a radio source I in the Orion KL region (Orion Source I) using the Atacama Large Millimeter/Submillimeter Array (ALMA) at band 8 with an angular resolution of…

We present a model for the diffuse interstellar dust that explains the observed wavelength-dependence of extinction, emission, linear and circular polarisation of light. The model is set-up with a small number of parameters. It consists of…

Astrophysics of Galaxies · Physics 2015-06-16 R. Siebenmorgen , N. V. Voshchinnikov , S. Bagnulo