Results 61 to 70 of about 1,731,322 (198)
The Apparent Absence of Forward Scattering in the HD 53143 Debris Disk
The Astrophysical Journal, 2023 HD 53143 is a mature Sun-like star and host to a broad disk of dusty debris, including a cold outer ring of planetesimals near 90 au. Unlike most other inclined debris disks imaged at visible wavelengths, the cold disk around HD 53143 appears as ...
Christopher C. Stark +7 more
doaj +1 more source
Photometric Variability and Rotation of β Pictoris b from JWST NIRCam Coronagraphic Imaging
The Astronomical JournalWe report the detection of photometric variability in the directly imaged super-Jupiter β Pictoris b ( β Pic b). Using JWST NIRCam dual-band coronagraphic imaging, we conducted a 16 hr continuous photometric monitoring campaign in the F210M and F410M ...
Yifan Zhou +30 more
doaj +1 more source
High-contrast Coronagraphic Techniques
, 2010 The direct detection of very faint companions to bright stars requires the development of effective high-contrast detection techniques, and the past decade has seen remarkable conceptual and instrumental progress in this area.
E. Serabyn
core +1 more source
A Survey of Protoplanetary Disks Using the Keck/NIRC2 Vortex Coronagraph
The Astronomical JournalRecent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spiral features.
Nicole L. Wallack +36 more
doaj +1 more source
Direct Measurement of Extinction in a Planet-hosting Gap
The Astronomical JournalRecent disk observations have revealed multiple indirect signatures of forming gas giant planets, but high-contrast imaging has rarely confirmed the presence of the suspected perturbers.
Gabriele Cugno +14 more
doaj +1 more source
A Large Double-ring Disk Around the Taurus M Dwarf J04124068+2438157
The Astrophysical Journal, 2023 Planet formation imprints signatures on the physical structures of disks. In this paper, we present high-resolution (∼50 mas, 8 au) Atacama Large Millimeter/submillimeter Array observations of 1.3 mm dust continuum and CO line emission toward the disk ...
Feng Long +25 more
doaj +1 more source
Subaru Near-IR Coronagraphic Image of LkHα 198 [PDF]
Publications of the Astronomical Society of Japan, 2002 Abstract High-resolution near-infrared imaging of a Herbig Ae/Be star $\mathrm{LkH}\alpha$ 198 has been carried out using the coronagraphic camera CIAO (Coronagraphic Imager with Adaptive Optics) on the Subaru 8.2 m Telescope. Obtained images resolve the infrared companion (IRC) and an associated reflection nebula.
Fukagawa, Misato +9 more
openaire +1 more source
The Astrophysical JournalBased on the Heliospheric Imager-1 images of the STEREO twin spacecraft, we established the CORrelation-Aided Reconstruction (CORAR) technique to locate and reconstruct the 3D structures of solar wind transients in interplanetary space.
Shaoyu Lyu +4 more
doaj +1 more source
A Unified View of Coronagraph Image Masks
, 2004 The last few years have seen a variety of new image mask designs for diffraction-limited coronagraphy. Could there still be useful designs as yet undiscovered? To begin to answer this question, I survey and unify the Fraunhofer theory of coronagraph image masks in the context of a one-dimensional classical coronagraph.
openaire +2 more sources
The Astrophysical JournalUsing the Correlation-Aided Reconstruction (CORAR) technique, we identified a population of small transient structures in the near-Sun solar wind observed by the white-light coronagraphs on board STEREO between 2009 December and 2010 September.
Shaoyu Lyu +3 more
doaj +1 more source