Results 81 to 90 of about 1,832,653 (172)

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

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

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

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

Defining the Middle Corona. [PDF]

Sol Phys, 2023
West MJ, Seaton DB, Wexler DB, Raymond JC, Del Zanna G, Rivera YJ, Kobelski AR, Chen B, DeForest C, Golub L, Caspi A, Gilly CR, Kooi JE, Meyer KA, Alterman BL, Alzate N, Andretta V, Auchère F, Banerjee D, Berghmans D, Chamberlin P, Chitta LP, Downs C, Giordano S, Harra L, Higginson A, Howard RA, Kumar P, Mason E, Mason JP, Morton RJ, Nykyri K, Patel R, Rachmeler L, Reardon KP, Reeves KK, Savage S, Thompson BJ, Van Kooten SJ, Viall NM, Vourlidas A, Zhukov AN.   +41 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

Post-coronagraphic wavefront sensing and control for exoplanet imaging

, 2018
L’imagerie d’exoplanètes est limitée par deux obstacles intrinsèques : le faible écart angulaire entre planète et étoile, et le très faible flux lumineux en provenance de la planète par rapport à la lumière de l’étoile.
Herscovici-Schiller, Olivier
core  

The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images. [PDF]

Sol Phys, 2023
Seaton DB, Berghmans D, Bloomfield DS, De Groof A, D'Huys E, Nicula B, Rachmeler LA, West MJ.   +7 more
europepmc   +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

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