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相关论文: The VLT/SPHERE view of the ATOMIUM cool evolved st…

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The dusty winds of cool evolved stars are a major contributor of the newly synthesised material enriching the Galaxy and future generations of stars. However, the details of the physics and chemistry behind dust formation and wind launching…

This overview paper presents ATOMIUM, a Large Programme in Cycle 6 with the Atacama Large Millimeter-submillimeter Array (ALMA). The goal of ATOMIUM is to understand the dynamics and the gas phase and dust formation chemistry in the winds…

We present 870 $\mu$m ALMA dust polarization observations of 10 young Class 0/I protostars in the Perseus Molecular Cloud. At $\sim$ 0.35$"$ (80 au) resolution, all of our sources show some degree of polarization, with most (9/10) showing…

太阳与恒星天体物理 · 物理学 2018-03-28 Erin G. Cox , Robert J. Harris , Leslie W. Looney , Zhi-Yun Li , Haifeng Yang , John J. Tobin , Ian Stephens

Over the past few years ALMA has detected dust-rich galaxies whose cold dust emission is spatially disconnected from the UV rest-frame emission. This represents a challenge for modeling their spectral energy distributions with codes based…

星系天体物理 · 物理学 2019-12-04 Buat , V. , Ciesla , M. , Boquien , M. , Malek , K. , Burgarella , D

The outflows of oxygen-rich asymptotic giant branch (AGB) stars are thought to be driven by radiation pressure by photon scattering on grains with sizes of tenths of microns. The details of the formation of dust in the extended atmospheres…

太阳与恒星天体物理 · 物理学 2018-12-05 T. Khouri , W. H. T. Vlemmings , H. Olofsson , C. Ginski , E. De Beck , M. Maercker , S. Ramstedt

Low- and intermediate-mass stars at the asymptotic giant branch (AGB) are known to be prevalent dust providers to galaxies. However, the mechanisms responsible for the formation and acceleration of dust in the cool extended atmospheres of…

太阳与恒星天体物理 · 物理学 2019-08-28 Christian Adam , Keiichi Ohnaka

(Sub-)Millimeter observations of the polarized emission of aligned aspherical dust grains enable us to study the magnetic fields within protoplanetary disk. However, the interpretation of these observations is complex. One must consider the…

太阳与恒星天体物理 · 物理学 2017-06-21 G. H. -M. Bertrang , S. Wolf

We use high-angular-resolution images obtained with SPHERE/ZIMPOL to study the photosphere, the warm molecular layer, and the inner wind of the close-by oxygen-rich AGB star R Doradus. We present observations in filters V, cntH$\alpha$, and…

We present visible polarimetric imaging observations of the well-studied AGB star W Hya taken with VLT/SPHERE-ZIMPOL as well as high spectral resolution long-baseline interferometric observations with the AMBER instrument of the Very Large…

太阳与恒星天体物理 · 物理学 2016-04-20 Keiichi Ohnaka , Gerd Weigelt , Karl-Heinz Hofmann

Dust in the diffuse interstellar medium remains incompletely understood with regard to the structure, composition, size distribution, and alignment properties of the grains. Joint observations of reddening, starlight polarisation spectra,…

星系天体物理 · 物理学 2026-05-27 Ralf Siebenmorgen , Stefano Bagnulo , Lapo Fanciullo , Thomas Vannieuwenhuyse , Vincent Guillet

Investigating the dynamical evolution of dust grains in proto-planetary disks is a key issue to understand how planets should form. We identify under which conditions dust settling can be constrained by high angular resolution observations…

地球与行星天体物理 · 物理学 2013-03-26 Y. Boehler , A. Dutrey , S. Guilloteau , V. Piétu

Context. The polarized thermal emission from interstellar dust offers a valuable tool for probing both the dust and the magnetic field in the interstellar medium (ISM). However, existing observations only yield the total amount of dust…

星系天体物理 · 物理学 2026-01-14 Katia Ferrière , Ludovic Montier , Jean-Sébastien Carrière

Our objective is to investigate the distribution of dust and associated large-scale structures of the Galaxy using optical linear polarization measurements of various open clusters located at different distances in the Galactic anticenter…

星系天体物理 · 物理学 2024-10-02 Namita Uppal , Shashikiran Ganesh , Vincent Pelgrims , Santosh Joshi , Mrinmoy Sarkar

We present the ALMA view of 11 main-sequence DSFGs, (sub-)millimeter selected in the GOODS-S field, and spectroscopically confirmed to be at the peak of Cosmic SFH (z = 2-3). Our study combines the analysis of galaxy SED with ALMA continuum…

Context. To date, more than a hundred debris disks have been spatially resolved. Among them, the young system HD 120326 stands out, displaying different disk substructures on both intermediate (30-150 au) and large (150-1000 au) scales.…

Imaging polarimetry enables the spatially resolved investigation of cometary dust properties across different morphological structures. While cometary comae have been studied thoroughly in the pertinent literature, cometary tails have…

地球与行星天体物理 · 物理学 2026-03-11 Mirza Arnaut , Christian Wöhler , Pritish Halder , Goldy Ahuja , Shashikiran Ganesh , Megha Bhatt

The stages before the formation of stars in molecular clouds are poorly understood. Insights can be gained by studying the properties of quiescent clouds, such as their magnetic field structure. The plane-of-the-sky orientation of the field…

Galaxy morphology is shaped by stellar activity, feedback, gas and dust properties, and interactions with surroundings, and can therefore provide insight into these processes. In this paper, we study the spatial offsets between stellar and…

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