Results 111 to 120 of about 411,596 (264)

CONSTRAINTS ON THE RADIAL VARIATION OF GRAIN GROWTH IN THE AS 209 CIRCUMSTELLAR DISK [PDF]

open access: yes, 2012
We present dust continuum observations of the protoplanetary disk surrounding the pre-main-sequence star AS 209, spanning more than an order of magnitude in wavelength from 0.88 to 9.8 mm.
L. P'erez   +20 more
semanticscholar   +1 more source

Discovery of a Rare Eclipsing Be/X-Ray Binary System, Swift J010902.6-723710 = SXP 182

open access: yesThe Astrophysical Journal Letters
We report on the discovery of Swift J010902.6-723710, a rare eclipsing Be/X-ray Binary system by the Swift SMC Survey (S-CUBED). Swift J010902.6-723710 was discovered via weekly S-CUBED monitoring observations when it was observed to enter a state of X ...
Thomas M. Gaudin   +7 more
doaj   +1 more source

Long-term Optical Studies of the Be/X-ray Binary RX J0440.9+4431/LS V+44 17

open access: yes, 2016
We present the spectroscopic and photometric observations on the Be/X-ray binary RX~J0440.9+4431 from 2001 to 2014. The short-term and long-term variability of the H$\alpha$ line profile indicates that one-armed global oscillations existed in the ...
Liu, Qingzhong   +3 more
core   +1 more source

Near-Infrared Coronagraphic Observations of the T Tauri Binary System UY Aur [PDF]

open access: yes, 2007
We present a near-infrared image of UY Aur, a 0.9" separated binary system, using the Coronagraphic Imager with Adaptive Optics on the Subaru Telescope.
Duchene G.   +16 more
core   +2 more sources

Impact of angular differential imaging on circumstellar disk images [PDF]

open access: yes, 2012
Context. Direct imaging of circumstellar disks requires high-contrast and high-resolution techniques. The angular differential imaging (ADI) technique is one of them, initially developed for point-like sources but now increasingly applied to extended ...
J. Milli   +6 more
semanticscholar   +1 more source

SXP214, an X-ray Pulsar in the Small Magellanic Cloud, Crossing the Circumstellar Disk of the Companion [PDF]

open access: yes, 2016
Located in the Small Magellanic Cloud (SMC), SXP214 is an X-ray pulsar in a high mass X-ray binary system with a Be-star companion. A recent survey of the SMC under a Chandra X-ray Visionary program found the source in a transition when the X-ray flux ...
Antoniou, Vallia   +14 more
core   +2 more sources

The circumstellar disk of HH 30. Searching for signs of disk evolution with multi-wavelength modeling [PDF]

open access: yes, 2012
Circumstellar disks are characteristic for star formation and vanish during the first few Myr of stellar evolution. During this time planets are believed to form in the dense midplane by growth, sedimentation and aggregation of dust.
D. Madlener   +3 more
semanticscholar   +1 more source

Suzaku X-Ray Observation of the Dwarf Nova Z Camelopardalis at the Onset of an Optical Outburst

open access: yes, 2012
We present the result of a Suzaku X-ray spectroscopic observation of the dwarf nova Z Camelopardalis, which was conducted by chance at the onset of an optical outburst. We used the X-ray Imaging Spectrometer (a 38 ks exposure) and the Hard X-ray Detector
Ebisawa, Ken   +3 more
core   +1 more source

SUBARU Near-Infrared Multi-Color Images of Class II Young Stellar Object, RNO91 [PDF]

open access: yes, 2007
We conducted sub-arcsecond near-infrared imaging observations of RNO91 with CIAO mounted on the SUBARU 8.2 m telescope. We present our JHK band data along with optical images, which when considered together reveal a complex circumstellar structure.
FUKAGAWA Misato   +9 more
core   +3 more sources

High-energy radiation and particles in the environments of young stellar objects [PDF]

open access: yes, 2017
High-energy radiation and particles profoundly affect circumstellar disk gas and solids.
Güdel, Manuel
core  

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