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Gas mass remains one of the most difficult protoplanetary disk properties to constrain. With much of the protoplanetary disk too cold for the main gas constituent, H2, to emit, alternative tracers such as dust, CO, or the H2 isotopolog HD…

Mid-infrared spectrophotometric observations have revealed a small sub-class of circumstellar disks with spectral energy distributions (SEDs) suggestive of large inner gaps with low dust content. However, such data provide only an indirect…

太阳与恒星天体物理 · 物理学 2011-02-11 J. M. Brown , G. A. Blake , C. Qi , C. P. Dullemond , D. J. Wilner , J. P. Williams

Previous theoretical studies indicate that the inner disk in dwarf novae evaporates into a high-temperature, optically thin, and geometrically thick accretion flow during quiescence, with the inner edge moving toward the white dwarf at the…

高能天体物理现象 · 物理学 2026-04-15 Mariko Kimura , Osaki Yoji

We present continuum high resolution Submillimeter Array (SMA) observations of the transition disk object RX J1633.9-2442, which is located in the Ophiuchus molecular cloud and has recently been identified as a likely site of ongoing giant…

In this paper, we present near-IR polarized images of the AB Aur disk at three epochs spanning 3.85 years with SPHERE/IRDIS, as well as Halpha images obtained with SPHERE/ZIMPOL at a single epoch. The purpose of this study is to analyze the…

We present spatially resolved ALMA images of CO J=3-2 emission from the protoplanetary disk around HD100546. We model the spatially-resolved kinematic structure of the CO emission. Assuming a velocity profile which prescribes a flat or…

地球与行星天体物理 · 物理学 2017-12-07 Catherine Walsh , Cail Daley , Stefano Facchini , Attila Juhasz

We present spatially resolved near-IR spectroscopic observations of 15 young stars. Using a grism spectrometer behind the Keck Interferometer, we obtained an angular resolution of a few milli-arcseconds and a spectral resolution of 230,…

天体物理学 · 物理学 2011-02-11 J. A. Eisner , J. R. Graham , R. L. Akeson , J. Najita

We present a high spatial resolution submillimeter continuum survey of 24 circumstellar disks in the Tau-Aur and Oph-Sco star formation regions using the SMA. In the context of a simple model, we use broadband SEDs and submillimeter…

天体物理学 · 物理学 2011-02-11 Sean M. Andrews , Jonathan P. Williams

Recent exo-planetary surveys reveal that planets can orbit and survive around binary stars. This suggests that some fraction of young binary systems which possess massive circumbinary disks (CB) may be in the midst of planet formation.…

RW Aur A is a CTTS that has suddenly undergone three major dimming events since 2010. We aim to understand the dimming properties, examine accretion variability, and derive the physical properties of the inner disc traced by the CO…

太阳与恒星天体物理 · 物理学 2019-05-08 M. Koutoulaki , S. Facchini , C. F. Manara , A. Natta , R. Garcia Lopez , R. Fedriani , A. Caratti o Garatti , D. Coffey , T. P. Ray

Isolated HAEBE stars are believed to represent an intermediate stage of objects between young stellar objects surrounded by massive, optically thick, gaseous and dusty disks and Vega like stars surrounded by debris disks. The star AB Aur is…

天体物理学 · 物理学 2009-11-10 Eric Pantin , Jeroen Bouwman , Pierre-Olivier Lagage

We present near-infrared H and K-band spectro-interferometric observations of the gaseous disk around the primary Be star in the delta Sco binary system, obtained in 2007 (between periastron passages in 2000 and 2011). Observations using…

太阳与恒星天体物理 · 物理学 2015-05-19 R. Millan-Gabet , J. D. Monnier , Y. Touhami , D. Gies , E. Hesselbach , E. Pedretti , N. Thureau , M. Zhao , T. ten Brummelaar

We analyze near-infrared integral field spectropolarimetry of the AB Aurigae protoplanetary disk and protoplanet (AB Aur b), obtained with SCExAO/CHARIS in 22 wavelength channels covering the J, H, and K passbands ($\lambda_{\rm o}$ =…

We present high spatial resolution (< 0.3" = 40$ AU) Submillimeter Array observations of the 865 micron continuum emission from the circumstellar disk around the young star DoAr 25. Despite its bright millimeter emission, this source…

天体物理学 · 物理学 2009-11-13 Sean M. Andrews , A. M. Hughes , D. J. Wilner , Chunhua Qi

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations in the dust continuum (690 GHz, 0.45 mm) and 12CO J=6-5 spectral line emission, of the transitional disks surrounding the stars SAO 206462 and SR 21. These ALMA…

太阳与恒星天体物理 · 物理学 2015-06-18 Laura M. Pérez , Andrea Isella , John M. Carpenter , Claire J. Chandler

We present comprehensive models of Herbig Ae star, HD 142666, which aim to simultaneously explain its spectral energy distribution (SED) and near-infrared (NIR) interferometry. Our new sub-milliarcsecond resolution CHARA (CLASSIC and CLIMB)…

We present ALMA Band 7 continuum (340 GHz) and CO J=3-2 observations for an extended sample of disks in the Upper Scorpius OB Association (Upper Sco, age ~ 10 Myr). The targets were selected from previous studies that identified new members…

太阳与恒星天体物理 · 物理学 2024-10-30 John M. Carpenter , Taran L. Esplin , Kevin L. Luhman , Eric E. Mamajek , Sean M. Andrews

We present new multi-wavelength millimeter interferometric observations of the Herbig Ae star HD 163296 obtained with the IRAM/PBI, SMA and VLA arrays both in continuum and in the 12CO, 13CO and C18O emission lines. Gas and dust properties…

天体物理学 · 物理学 2009-11-13 A. Isella , L. Testi , A. Natta , R. Neri , D. Wilner , C. Qi

We present high-resolution $^{12}$CO and $^{13}$CO 2-1 ALMA observations, as well as optical and near-infrared spectroscopy, of the highly-inclined protoplanetary disk around SSTC2D J163131.2-242627. The spectral type we derive for the…