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Related papers: Submillimeter Array Observations of Disks in the S…

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We present spatially resolved mid-infrared images of the disk surrounding the young star IRS 48 in the Ophiuchus cloud complex. The disk exhibits a ring-like structure at 18.7 micron, and is dominated by very strong emission from polycyclic…

This paper presents interferometric and single-dish CO observations along with HI data obtained for the oxygen-rich semi-regular variable RS Cnc, in order to probe its circumstellar environment at different scales. With the Plateau de Bure…

Solar and Stellar Astrophysics · Physics 2015-05-18 Yannick Libert , Jan Martin Winters , Thibaut Le Bertre , Eric Gérard , Lynn D. Matthews

We report high-resolution millimeter mapping with the IRAM Plateau de Bure interferometer of rest-frame 335 micron continuum and CO(3-2) line emission from the z=2.8 submillimeter galaxy SMMJ02399-0136. The continuum emission comes from a…

There is a group of post-AGB stars that are part of a binary system and that show a significant NIR excess. These systems are known to host disks with Keplerian or quasi-Keplerian dynamics and to drive outflows of gas escaping from the…

Solar and Stellar Astrophysics · Physics 2025-12-01 I. Gallardo Cava , J. Alcolea , H. Van Winckel , V. Bujarrabal , M. Santander-García , M. Gómez-Garrido

Transition disks (TDs) are intermediate stage circumstellar disks characterized by an inner gap within the disk structure. To test whether these gaps may have been formed by closely orbiting, previously undetected stellar companions, we…

Solar and Stellar Astrophysics · Physics 2016-03-15 Saul A. Kohn , Evgenya L. Shkolnik , Alycia J. Weinberger , Joleen K. Carlberg , Joe Llama

We report Spitzer Space Telescope IRAC 3.6, 4.5, 5.8 and 8 um and MIPS 24 and 70 um observations of the 32 Ori Group, a recently discovered nearby stellar association situated towards northern Orion. The proximity of the group (~93 pc) has…

Solar and Stellar Astrophysics · Physics 2016-12-22 Alexander J. Shvonski , Eric E. Mamajek , Jinyoung Serena Kim , Michael R. Meyer , Mark J. Pecaut

The processes that form transition disks - disks with depleted inner regions - are not well understood; possible scenarios include planet formation, grain growth and photoevaporation. Disks with spatially resolved dust holes are rare, but,…

Astrophysics of Galaxies · Physics 2015-06-11 Joanna M. Brown , Katherine A. Rosenfeld , Sean M. Andrews , David J. Wilner , Ewine F. van Dishoeck

The study of warm molecular gas in the inner region (<10 AU) of circumstellar disks around young stars is of significant importance to understand how planets are forming. This inner zone of disks can now be explored in unprecedented detail…

Solar and Stellar Astrophysics · Physics 2015-05-20 J. E. Bast , J. M. Brown , G. J. Herczeg , E. F. van Dishoeck , K. M. Pontoppidan

We report on submillimetre bolometer observations of the isolated neutron star RX J1856.5--3754 using the LABOCA bolometer array on the Atacama Pathfinder Experiment (APEX) Telescope. No cold dust continuum emission peak at the position of…

Solar and Stellar Astrophysics · Physics 2015-05-18 B. Posselt , K. Schreyer , R. Perna , M. W. Sommer , B. Klein , P. Slane

(abridged) We investigate the properties of young stars and their disks in the NGC 6357 complex, concentrating on the most massive star cluster within the complex: Pismis 24. We discover two new young clusters in the NGC 6357 complex. We…

Solar and Stellar Astrophysics · Physics 2012-01-05 M. Fang , R. van Boekel , R. R. King , Th. Henning , J. Bouwman , Y. Doi , Y. K. Okamoto , V. Roccatagliata , A. Sicilia-Aguilar

We exploit the high sensitivity and moderate spectral resolution of the $HST$-Cosmic Origins Spectrograph to detect far-ultraviolet spectral features of carbon monoxide (CO) present in the inner regions of protoplanetary disks for the first…

We present Submillimeter Array observations of the 880 micron continuum emission from three circumstellar disks around young stars in Orion that lie several arcminutes (> 1-pc) north of the Trapezium cluster. Two of the three disks are in…

Solar and Stellar Astrophysics · Physics 2011-02-11 Rita K. Mann , Jonathan P. Williams

AIMS : To characterize the molecular environment of classical T Tauri stars in Lupus observed with the Spitzer Space Telescope and to search for gas-rich disks toward these sources. METHODS : Submillimeter observations of 12CO, 13CO and…

Astrophysics · Physics 2009-11-11 T. A. van Kempen , E. F. van Dishoeck , C. Brinch , M. R. Hogerheijde

We present 230 GHz Submillimeter Array continuum and molecular line observations of the newly discovered FUor candidate HBC722. We report the detection of seven 1.3 mm continuum sources in the vicinity of HBC722, none of which correspond to…

Astrophysics of Galaxies · Physics 2015-06-05 Michael M. Dunham , Hector G. Arce , Tyler L. Bourke , Xuepeng Chen , Tim A. van Kempen , Joel D. Green

We present a spatially resolved 894 micron map of the circumstellar disk of the Butterfly star in Taurus (IRAS 04302+2247), obtained with the Submillimeter Array (SMA). The predicted and observed radial brightness profile agree well in the…

Astrophysics · Physics 2009-11-13 S. Wolf , A. Schegerer , H. Beuther , D. L. Padgett , K. R. Stapelfeldt

We present MIPS 24um and 70um photometry for 205 members of the Upper Scorpius OB Association. These data are combined with published MIPS photometry for 15 additional association members to assess the frequency of circumstellar disks…

Solar and Stellar Astrophysics · Physics 2014-11-20 John M. Carpenter , Eric E. Mamajek , Lynne A. Hillenbrand , Michael R. Meyer

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…

Earth and Planetary Astrophysics · Physics 2015-05-13 Olja Panić , Michiel R. Hogerheijde , David Wilner , Chunhua Qi

(abridged) We determine the disk mass distribution around 336 stars in the young Orion Nebula cluster by imaging a 2.5' x 2.5' region in 3 mm continuum emission with the Owens Valley Millimeter Array. For this sample of 336 stars, we…

Astrophysics · Physics 2009-11-11 J. A. Eisner , John M. Carpenter

We report the first detection of CO(1-0) emission from a submillimeter-selected galaxy, using the Green Bank Telescope. We identify the line in the spectrum of SMM J13120+4242 as a broad emission feature at z=3.408, with Delta(V_FWHM)=1040…

Astrophysics · Physics 2008-11-26 L. J. Hainline , A. W. Blain , T. R. Greve , S. C. Chapman , I. Smail , R. J. Ivison