Results 101 to 110 of about 3,877 (212)

A Refined Photometric Constraint for Exoplanet Direct Imaging Yield Estimation and Observation Scheduling

The Astronomical Journal
Science yield studies will drive the development of future direct imaging telescopes, such as the Habitable Worlds Observatory. These studies rely on a metric called completeness, which represents the fraction of planets from an assumed planet population
Corey Spohn, Dmitry Savransky, Christopher C. Stark   +2 more
doaj   +1 more source

Utilizing Astrometric Orbits to Obtain Coronagraphic Images

, 2010
28 pages, 14 figures, submitted to ...
openaire   +2 more sources

Direct Images of CO2 Absorption in the Atmosphere of a Super-Jupiter: Enhanced Metallicity Suggestive of Formation in a Disk

The Astrophysical Journal Letters
It is unclear how directly imaged substellar companions with masses near the deuterium burning limit form, because these objects are rare and their bulk properties are not diagnostic of their formation.
William O. Balmer, Laurent Pueyo, Ashley Messier, Evelyn Bruinsma, Jeremy Jones, Klara Matuszewska, Marshall D. Perrin, Julien H. Girard, Jarron M. Leisenring, Kellen Lawson, Roeland P. van der Marel, Jens Kammerer, Aarynn Carter, Mathilde Mâlin, Kimberly Ward-Duong, Kielan K. W. Hoch, Emily Rickman, Sara Seager   +17 more
doaj   +1 more source

Sky Brightness Evaluation at Concordia Station, Dome C, Antarctica, for Ground-Based Observations of the Solar Corona. [PDF]

Sol Phys, 2022
Liberatore A, Capobianco G, Fineschi S, Massone G, Zangrilli L, Susino R, Nicolini G.   +6 more
europepmc   +1 more source

Low-mass Stellar and Substellar Candidate Companions around Massive Stars in Sco OB1 and M17

The Astronomical Journal
Massive stars are recognized for their high degree of multiplicity, yet the mass ratio regime below 0.1 remains insufficiently explored. It is therefore unknown whether extremely low-mass (possibly substellar) companions can form and survive in the ...
Tinne Pauwels, Maddalena Reggiani, Hugues Sana, Laurent Mahy   +3 more
doaj   +1 more source

JWST-TST High Contrast: Living on the Wedge, or, NIRCam Bar Coronagraphy Reveals CO2 in the HR 8799 and 51 Eri Exoplanets’ Atmospheres

The Astronomical Journal
High-contrast observations with JWST can reveal key composition and vertical mixing dependent absorption features in the spectra of directly imaged planets across the 3–5 μ m wavelength range.
William O. Balmer, Jens Kammerer, Laurent Pueyo, Marshall D. Perrin, Julien H. Girard, Jarron M. Leisenring, Kellen Lawson, Henry Dennen, Roeland P. van der Marel, Charles A. Beichman, Geoffrey Bryden, Jorge Llop-Sayson, Jeff A. Valenti, Joshua D. Lothringer, Nikole K. Lewis, Mathilde Mâlin, Isabel Rebollido, Emily Rickman, Kielan K. W. Hoch, Rémi Soummer, Mark Clampin, C. Matt Mountain   +21 more
doaj   +1 more source

Jupiter-like planets might be common in a low-density environment. [PDF]

Nat Commun, 2023
Gratton R, Mesa D, Bonavita M, Zurlo A, Marino S, Kervella P, Desidera S, D'Orazi V, Rigliaco E.   +8 more
europepmc   +1 more source

Searching for Planets Orbiting Vega with the James Webb Space Telescope

The Astronomical Journal
The most prominent of the IRAS debris disk systems, α Lyrae (Vega), at a distance of 7.7 pc, has been observed by both the NIRCam and MIRI instruments on the James Webb Space Telescope.
Charles Beichman, Geoffrey Bryden, Jorge Llop-Sayson, Marie Ygouf, Alexandra Greenbaum, Jarron Leisenring, Andras Gaspar, John Krist, George Rieke, Schuyler Wolff, Kate Su, Klaus Hodapp, Michael Meyer, Doug Kelly, Martha Boyer, Doug Johnstone, Scott Horner, Marcia Rieke   +17 more
doaj   +1 more source

A 20 m wide-field diffraction-limited telescope. [PDF]

Philos Trans A Math Phys Eng Sci, 2021
Eads RW, Angel JRP.
europepmc   +1 more source

The Quasi-radial Field-line Tracing (QRaFT): An Adaptive Segmentation of the Open-flux Solar Corona

The Astrophysical Journal
Optical observations of the solar corona provide key information on its magnetic geometry. The large-scale open field of the corona plays an important role in shaping the ambient solar wind and constraining the propagation dynamics of the embedded ...
Vadim M. Uritsky, Christopher E. Rura, Cooper Downs, Shaela I. Jones, Charles Nickolos Arge, Nathalia Alzate   +5 more
doaj   +1 more source