Results 111 to 120 of about 1,731,322 (198)

JWST/NIRCam Detection of the Fomalhaut C Debris Disk in Scattered Light

The Astrophysical Journal Letters
Observations of debris disks offer important insights into the formation and evolution of planetary systems. Though M dwarfs make up approximately 80% of nearby stars, very few M dwarf debris disks have been studied in detail—making it unclear how or if ...
Kellen Lawson, Joshua E. Schlieder, Jarron M. Leisenring, Ell Bogat, Charles A. Beichman, Geoffrey Bryden, András Gáspár, Tyler D. Groff, Michael W. McElwain, Michael R. Meyer, Thomas Barclay, Per Calissendorff, Matthew De Furio, Yiting Li, Marcia J. Rieke, Marie Ygouf, Thomas P. Greene, Julien H. Girard, Mario Gennaro, Jens Kammerer, Armin Rest, Thomas L. Roellig, Ben Sunnquist   +22 more
doaj   +1 more source

Dynamical and Atmospheric Characterization of the Substellar Companion HD 33632 Ab from Direct Imaging, Astrometry, and Radial-velocity Data

The Astrophysical Journal
We present follow-up SCExAO/CHARIS H- and K -band ( R  ∼ 70) high-contrast integral field spectroscopy and Keck/NIRC2 photometry of directly imaged brown dwarf companion HD 33632 Ab and new radial-velocity data for the system from the SOPHIE spectrograph,
Mona El Morsy, Thayne Currie, Danielle Bovie, Masayuki Kuzuhara, Brianna Lacy, Yiting Li, Taylor Tobin, Timothy D. Brandt, Jeffrey Chilcote, Olivier Guyon, Tyler D. Groff, Julien Lozi, Sebastien Vievard, Vincent Deo, Nour Skaf, Francois Bouchy, Isabelle Boisse, Erica Dykes, N. Jeremy Kasdin, Motohide Tamura   +19 more
doaj   +1 more source

Compressive Sensing Imaging Spectrometer for UV-Vis Stellar Spectroscopy: Instrumental Concept and Performance Analysis. [PDF]

Sensors (Basel), 2023
Nardino V, Guzzi D, Lastri C, Palombi L, Coluccia G, Magli E, Labate D, Raimondi V.   +7 more
europepmc   +1 more source

Deepest Limits on Scattered Light Emission from the Epsilon Eridani Inner Debris Disk with HST/STIS

The Astronomical Journal
Epsilon Eridani is one of the first debris disk systems detected by the Infrared Astronomical Satellite. However, the system has thus far eluded detection in scattered light with no components having been directly imaged.
Sai Krishanth P. M., Ewan S. Douglas, Ramya M. Anche, Justin Hom, Kerri L. Cahoy, John H. Debes, Hannah Jang-Condell, Isabel Rebollido, Bin B. Ren, Christopher C. Stark, Robert Thompson, Yinzi Xin   +11 more
doaj   +1 more source

The Companions to B and A Stars Snapshot (C-BASS) Survey. I. Discovery of a Young Brown Dwarf Companion to HIP 17453

The Astronomical Journal
We report the detection of a new brown dwarf companion to HIP 17453 A, a chemically peculiar A0V star located at a distance of 81 pc. HIP 17453 A was observed with high-resolution adaptive-optics imaging using the Near-Infrared Camera 2 on the Keck II ...
Marah Brinjikji, Adam J. R. W. Smith, Jenny Patience, Eric L. Nielsen, Austin Ware, Jorge A. Sanchez, Robert De Rosa, Jasmine Garani, Emma Softich, Michael C. Liu, Bruce A. Macintosh, Thomas M. Esposito, Brendan P. Bowler, William M. J. Best, Sarah Blunt, Trent J. Dupuy, Justin Hom, Jessica Klusmeyer, Franck Marchis, Jayke S. Nguyen, Anne E. Peck, Mark W. Phillips, William Roberson, Jean-Baptiste Ruffio, William Thompson, Zahed Wahhaj, Samuel Walker, Jason J. Wang, Patrick A. Young   +28 more
doaj   +1 more source

New HST data and modeling reveal a massive planetesimal collision around Fomalhaut. [PDF]

Proc Natl Acad Sci U S A, 2020
Gáspár A, Rieke GH.
europepmc   +1 more source

Radiation-driven acceleration in the expanding WR140 dust shell. [PDF]

Nature, 2022
Han Y, Tuthill PG, Lau RM, Soulain A.
europepmc   +1 more source

Adaptive optics for high-resolution imaging. [PDF]

Nat Rev Methods Primers, 2021
Hampson KM, Turcotte R, Miller DT, Kurokawa K, Males JR, Ji N, Booth MJ.   +6 more
europepmc   +1 more source

Diagnosing the Structure of the HD 163296 Protoplanetary Disk Via Coronagraphic Imaging Polarimetry

, 2008
Coronagraphic imaging polarimetry is a high contrast imaging technique which can diagnose both the spatial distribution and size distribution of dust grains which comprise primordial protoplanetary disks.
Kowalski, Adam F., Sitko, M. L., Wisniewski, John P., Fukagawa, M., Hines, D. C., Bjorkman, K. S., Clampin, M., Katoh, E., Whitney, B. A., Grady, C. A.   +9 more
core  

High-resolution Imaging of the Magnetic Reconfiguration of the Corona from inside the Corona by WISPR on Parker Solar Probe

The Astrophysical Journal Letters
During the 22nd perihelion of Parker Solar Probe at 9.86 solar radii on 2024 December 24, the WISPR telescope captured a detailed sequence of events marking the return of open magnetic flux back to the Sun via the heliospheric current sheet (HCS ...
Angelos Vourlidas, Evangelos Paouris, Mark G. Linton, Guillermo Stenborg, Paulett C. Liewer, Pete Riley, Phillip Hess, Russell A. Howard, Nour E. Raouafi   +8 more
doaj   +1 more source