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相关论文: MINDS. Young binary systems with JWST/MIRI: Variab…

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Millimetre-compact dust disks are thought to have efficient radial drift of icy dust pebbles, which has been hypothesised to produce an enhanced cold ($T<$400 K) H$_2$O reservoir in their inner disks. Mid-infrared spectral surveys, now with…

JWST gives a unique access to the physical and chemical structure of inner disks ($<10$~au), where the majority of the planets are forming. However, the interpretation of mid-infrared (mid-IR) spectra requires detailed thermo-chemical…

地球与行星天体物理 · 物理学 2024-10-30 Benoît Tabone , Ewine F. van Dishoeck , John H. Black

The inner few au of a protoplanetary disk hosts the majority of observed exoplanets and is the primary planet-forming zone of the disk. The mid-IR spectra of disks, with its rich forest of water lines, provides key insights into the…

The Mid-InfraRed Instrument (MIRI) on board the James Webb Space Telescope (JWST) probes the chemistry and dust mineralogy of the inner regions of protoplanetary disks. The observed spectra are unprecedented in their detail, complicating…

地球与行星天体物理 · 物理学 2024-07-17 T. Kaeufer , M. Min , P. Woitke , I. Kamp , A. M. Arabhavi

We present JWST MIRI Medium Resolution Spectrograph (MRS) observations of the $\beta$ Pictoris system. We detect an infrared excess from the central unresolved point source from 5 to 7.5 $\mu$m which is indicative of dust within the inner…

Scattered light imaging of protoplanetary disks provides key insights on the geometry and dust properties in the disk surface. Here we present JWST 2--21\,$\mu$m images of a 1000\,au-radius edge-on protoplanetary disk surrounding an…

地球与行星天体物理 · 物理学 2023-09-14 G. Duchene , F. Menard , K. Stapelfeldt , M. Villenave , S. G. Wolff , M. D. Perrin , C. Pinte , R. Tazaki , D. L. Padgett

We present near- and mid-infrared (IR) broadband imaging observations of the edge-on protoplanetary disk around HH 30 with the James Webb Space Telescope/Near Infrared Camera (NIRCam) and the Mid-Infrared Instrument (MIRI). We combine these…

Mid-infrared spectra of planet-forming discs commonly show prominent silicate emission, whose spectral shape is sensitive to the disc temperature distribution as well as its mineralogical composition. We report new James Webb Space…

The protoplanetary disk around the T Tauri star GM Aur was one of the first hypothesized to be in the midst of being cleared out by a forming planet. As a result, GM Aur has had an outsized influence on our understanding of disk structure…

Aims: We characterize the mid-infrared spectrum of the outer regions of the Red Rectangle nebula to probe the carbonaceous dust and molecular content beyond the circumbinary disk. Methods: We present JWST MIRI-MRS observations of the SW…

The presence of excess emission at 3.6--8.0 $\mu$m was investigated in a sample of 27 binary systems located in two nearby star-forming regions, Taurus and Ophiuchus, by using Spitzer/Infrared Array Camera (IRAC) archival data. Angular…

太阳与恒星天体物理 · 物理学 2015-08-25 Yusuke Itoh , Misato Fukagawa , Hiroshi Shibai , Takahiro Sumi , Kodai Yamamoto

Crystalline silicates are an important tracer to the dust evolution in protoplanetary disks. In the inner disk, amorphous silicates are annealed by the high temperatures. These crystalline silicates are radially and vertically distributed…

地球与行星天体物理 · 物理学 2024-07-24 Hyerin Jang , L. B. F. M. Waters , I. Kamp , C. P. Dullemond

The impact of stellar multiplicity on the evolution of planet-forming disks is still the subject of debate. Here we present and analyze disk structures around ten multiple stellar systems that were included in an unbiased, high spatial…

Infrared observations probe the warm gas in the inner regions of planet-forming disks around young sun-like, T Tauri stars. In these systems, H$_2$O, OH, CO, CO$_2$, C$_2$H$_2$, and HCN have been widely observed. However, the potentially…

地球与行星天体物理 · 物理学 2021-03-10 D. E. Anderson , G. A. Blake , L. I. Cleeves , E. A. Bergin , K. Zhang , K. R. Schwarz , C. Salyk , A. D. Bosman

We have conducted a survey of 17 wide (> 100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems…

太阳与恒星天体物理 · 物理学 2015-06-18 R. L. Akeson , E. L. N. Jensen

Unveiling the physical structure of protoplanetary disk is crucial for interpreting the diversity of the exoplanet population. Until recently, the census of the physical properties of protoplanetary disks probed by mid-infrared observations…

The GW Ori system is a pre-main sequence triple system (GW Ori A/B/C) with companions (GW Ori B/C) at $\sim$1 AU and $\sim$8 AU, respectively, from the primary (GW Ori A). The primary of the system has a mass of 3.9 $M_{\odot}$, but shows a…

太阳与恒星天体物理 · 物理学 2017-07-26 M. Fang , A. Sicilia-Aguilar , D. Wilner , Y. Wang , V. Roccatagliata , D. Fedele , J. Z. Wang

Here we analyze the first simultaneous X-ray, ultraviolet, optical, infrared, and centimeter observations of a T Tauri star (TTS). We present three epochs of simultaneous Spitzer and VLA data of GM Aur separated by ~1 wk. These data are…

太阳与恒星天体物理 · 物理学 2019-06-12 C. C. Espaillat , E. Macias , J. Hernandez , C. Robinson

We present a Spitzer InfraRed Spectrometer search for 10-36 micron molecular emission from a large sample of protoplanetary disks, including lines from H2O, OH, C2H2, HCN and CO2. This paper describes the sample and data processing and…

地球与行星天体物理 · 物理学 2015-05-19 Klaus M. Pontoppidan , Colette Salyk , Geoffrey A. Blake , Rowin Meijerink , John S. Carr , Joan Najita