中文
相关论文

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

200 篇论文

We present $10$ main-sequence ALPINE galaxies (log($M/M_{\odot}$) = 9.2-11.1 and ${\rm SFR}=23-190\,{\rm M_{\odot}\,yr^{-1}}$) at $z\sim4.5$ with optical [OII] measurements from Keck/MOSFIRE spectroscopy and Subaru/MOIRCS narrow-band…

Recent high-resolution observations have shown stellar winds to harbour complexities which strongly deviate from spherical symmetry, generally assumed as standard wind model. One such morphology is the archimedean spiral, generally believed…

太阳与恒星天体物理 · 物理学 2015-07-15 Ward Homan , Leen Decin , Alex de Koter , Allard Jan van Marle , Robin Lombaert , Wouter Vlemmings

First hydrostatic cores are predicted by theories of star formation, but their existence has never been demonstrated convincingly by (sub)millimeter observations. Furthermore, the multiplicity at the early phases of the star formation…

太阳与恒星天体物理 · 物理学 2015-06-11 Benoît Commerçon , François Levrier , Anaëlle J. Maury , Thomas Henning , Ralf Launhardt

Our aim is to study the polarization of thermal dust emission to see if the alignment of grain by radiative torques could explain the observed relation between the degree of polarization and the intensity in dense cores. Predictions are…

天体物理学 · 物理学 2009-11-11 V. -M. Pelkonen , M. Juvela , P. Padoan

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…

星系天体物理 · 物理学 2015-06-16 R. Siebenmorgen , N. V. Voshchinnikov , S. Bagnulo

We have observed the Class I protostar TMC-1A in the Taurus molecular cloud using the Submillimeter Array (SMA) and the Atacama Large Millimeter/submillimeter Array (ALMA) in the linearly polarized 1.3 mm continuum emission at angular…

星系天体物理 · 物理学 2021-10-27 Yusuke Aso , Woojin Kwon , Naomi Hirano , Tao-Chung Ching , Shih-Ping Lai , Zhi-Yun Li , Ramprasad Rao

Using NICMOS on HST, we have performed imaging polarimetry of proto-planetary nebulae. Our objective is to study the structure of optically thin circumstellar shells of post-asymptotic giant branch stars by separating dust-scattered,…

天体物理学 · 物理学 2009-11-10 Toshiya Ueta , Koji Murakawa , Margaret Meixner

Most debris discs consist of a gas-poor, cold dust belt located tens to hundreds of astronomical units away from the host star. Many cold dust belts exhibit distinct structures attributed to the dynamic interaction of planetary systems.…

地球与行星天体物理 · 物理学 2024-04-09 Qiancheng Yang , Qiong Liu , Grant M. Kennedy , Mark C. Wyatt , Sarah Dodson-Robinson , Rachel Akeson , Nenghui Liao

The bright southern star L2 Pup is a particularly prominent asymptotic giant branch (AGB) star, as its distance of 64 pc makes it the nearest of its type. We report new adaptive optics observations of L2 Pup at visible wavelengths with the…

太阳与恒星天体物理 · 物理学 2015-11-17 P. Kervella , M. Montargès , E. Lagadec , S. T. Ridgway , X. Haubois , J. H. Girard , K. Ohnaka , G. Perrin , A. Gallenne

We use the deep NIRCam and MIRI imaging from the JWST PRIMER survey to study the properties of (sub)mm sources detected by ALMA in the centre of the COSMOS field, with the aim of better constraining the history of dust-enshrouded star…

We present a population study of Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 6 observations of the 100 most gravitationally unstable dense cores in Aquila using a simple mass versus size analysis. We identify 66 continuum…

星系天体物理 · 物理学 2026-05-05 Samuel Fielder , Helen Kirk , Michael Dunham , Stella Offner

The role of massive ($\geq$ 8M$_{\odot}$) stars in defining the energy budget and chemical enrichment of the interstellar medium in their host galaxy is significant. In this first paper from the Tracing Evolution in Massive Protostellar…

We analyze the dust morphology of 29 transition disks (TDs) observed with ALMA at (sub-) millimeter-emission. We perform the analysis in the visibility plane to characterize the total flux, cavity size, and shape of the ring-like structure.…

Cool giant and supergiant stars are among the largest and most luminous stars in the Universe and, therefore, dominate the integrated light of their host galaxies. These stars were extensively studied during last few decades, however their…

太阳与恒星天体物理 · 物理学 2023-03-16 Kateryna Kravchenko

The generation and evolution of dust in galaxies are important tracers for star formation, and can characterize the rest-frame ultraviolet to infrared emission from the galaxies. In particular understanding dust in high-redshift galaxies…

星系天体物理 · 物理学 2023-10-05 Daichi Tsuna , Yurina Nakazato , Tilman Hartwig

We used VLT/SPHERE to observe 20 systems in the Cha I cloud in polarized scattered light in the near-infrared. We combined the scattered light observations with existing literature data on stellar properties and with archival ALMA continuum…

Recent observations have revealed puzzling spatial disparities between ALMA dust continuum and UV emission as seen by HST and JWST in galaxies at $z=5-7$ (e.g. ALPINE and REBELS surveys), compelling us to propose a physical interpretation…

We study the alignment and rotational disruption of dust grains at the centre of our Galaxy using polarized thermal dust emission observed by SOFIA/HAWC+ and JCMT/SCUPOL at 53, 216, and 850 $\mu$m. We analyzed the relationship between the…

星系天体物理 · 物理学 2023-05-01 M. S. Akshaya , Thiem Hoang