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Context: Dust is efficiently produced by cool giant stars, but the condensation of inorganic dust is poorly understood. Aims: Identify and characterize aluminum bearing species in the circumstellar gas of Mira ($o$ Ceti) in order to…

We present Atacama Large Millimeter Array (ALMA) observations at an angular resolution of 0.1-0.2" of the disk surrounding the young Herbig Ae star MWC 758. The data consist of images of the dust continuum emission recorded at 0.88…

地球与行星天体物理 · 物理学 2018-02-14 Y. Boehler , L. Ricci , E. Weaver , A. Isella , M. Benisty , J. Carpenter , C. Grady , Bo-Ting Shen , Ya-Wen Tang , L. Perez

The formation of planets occurs within protoplanetary disks surrounding young stars, resulting in perturbation of the gas and dust surface densities. Here, we report the first evidence of spatially resolved gas surface density…

地球与行星天体物理 · 物理学 2020-06-24 Cécile Favre , Davide Fedele , Luke Maud , Richard Booth , Marco Tazzari , Anna Miotello , Leonardo Testi , Dmitry Semenov , Simon Bruderer

Recent observations have revealed that most proto-planetary discs show a pattern of bright rings and dark gaps. However, most of the high-resolution observations have focused only on the continuum emission. In this Paper we present…

地球与行星天体物理 · 物理学 2020-12-23 Giovanni P. Rosotti , John D. Ilee , Stefano Facchini , Marco Tazzari , Richard Booth , Cathie Clarke , Mihkel Kama

In this study, we reported the results of high-resolution (0.14 arcsec) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 225 GHz dust continuum and CO molecular emission lines from the transitional disk around SY Cha.…

We investigate the spatial extent and structure of the [CII] line emission in a sample of 34 galaxies at $z=4-6$ from the ALMA-CRISTAL Survey. By modeling the [CII] line emission in the interferometric visibility, we derive the effective…

We report ALMA observations of molecular gas and continuum emission in the 90 and 350 GHz bands toward a nearby Seyfert galaxy NGC 613. Radio continuum emissions were detected at 95 and 350 GHz from both the circum-nuclear disk (CND)…

星系天体物理 · 物理学 2018-02-05 Yusuke Miyamoto , Naomasa Nakai , Masumichi Seta , Dragan Salak , Makoto Nagai , Hiroyuki Kaneko

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

We present 0.075 (~400 pc) resolution ALMA observations of the [CII] and dust continuum emission from the host galaxy of the z=6.5406 quasar, P036+03. We find that the emission arises from a thin, rotating disk with an effective radius of…

We present detailed modeling of the spatial distributions of gas and dust in 57 circumstellar disks in the Upper Scorpius OB Association observed with ALMA at sub-millimeter wavelengths. We fit power-law models to the dust surface density…

太阳与恒星天体物理 · 物理学 2017-12-27 Scott A. Barenfeld , John M. Carpenter , Anneila I. Sargent , Andrea Isella , Luca Ricci

We study the distribution and physical properties of molecular gas in the disc around the T Tauri star IM Lup on scales close to 200 AU. We investigate how well the gas and dust distributions compare and work towards a unified disc model…

地球与行星天体物理 · 物理学 2015-05-13 Olja Panić , Michiel R. Hogerheijde , David Wilner , Chunhua Qi

We present ALMA Cycle-0 observations of the CO (6-5) line emission (rest-frame frequency = 691.473 GHz) and of the 435$\mu m$ dust continuum emission in the nuclear region of NGC 34, a local luminous infrared galaxy (LIRG) at a distance of…

We report ALMA Band 7 (350 GHz) imaging at 0.4 - 0.6arcsec resolution and Band 9 (696 GHz) at ~0.25arcsec resolution of the luminous IR galaxies Arp 220 and NGC 6240. The long wavelength dust continuum is used to estimate ISM masses for Arp…

We present ALMA detections of the [CII] 158 micron emission line and the underlying far-infrared continuum of three quasars at 6.6<z<6.9 selected from the VIKING survey. The [CII] line fluxes range between 1.6-3.4 Jy km/s ([CII]…

星系天体物理 · 物理学 2016-01-13 B. P. Venemans , F. Walter , L. Zschaechner , R. Decarli , G. De Rosa , J. R. Findlay , R. G. McMahon , W. J. Sutherland

We present ALMA observations of a small but statistically complete sample of twelve 250 micron selected galaxies at $z=0.35$ designed to measure their dust submillimeter continuum emission as well as their CO(1-0) and atomic carbon…

星系天体物理 · 物理学 2021-11-18 L. Dunne , S. J. Maddox , C. Vlahakis , H. L. Gomez

We investigate the structure and kinematics of the circumstellar disk around the Herbig Ae star MWC 758 using high resolution observations of the 12CO (3-2) and dust continuum emission at the wavelengths of 0.87 and 3.3 mm. We find that the…

太阳与恒星天体物理 · 物理学 2015-05-20 Andrea Isella , Antonella Natta , David Wilner , John M. Carpenter , Leonardo Testi

Transitional disks show a lack of excess emission at infrared wavelengths due to a large dust cavity, that is often corroborated by spatially resolved observations at ~ mm wavelengths. We present the first spatially resolved ~ mm-wavelength…

地球与行星天体物理 · 物理学 2016-11-11 Catherine Walsh , Attila Juhász , Gwendolyn Meeus , William R. F. Dent , Luke Maud , Yuri Aikawa , Tom J. Millar , Hideko Nomura

We present the results from ALMA observations of [NII]205 micron, [CII]158 micron, and [OII]88 micron lines in an unlensed submillimeter galaxy at z=4.3, COSMOS-AzTEC-1, hosting a compact starburst core with an effective radius of 1 kpc.…

We present the results of data analysis of the [CI] ($^{3}P_{1}$-$^{3}P_{0}$) emission from the $\rho$ Ophiuchi A photon-dominated region (PDR) obtained in the ALMA ACA stand-alone mode with a spatial resolution of 2.''6 (360 au). The [CI]…

We present Atacama Large Millimeter/sub-millimeter Array (ALMA) Cycle 2 observations of the 1.3 mm dust continuum emission of the protoplanetary disc surrounding the T Tauri star Elias 24 with an angular resolution of $\sim 0.2"$ ($\sim 28$…