Results 121 to 130 of about 25,446 (221)

The Origin of the Nano-Hertz Stochastic Gravitational-wave Background: The Contribution from z ≳ 1 Supermassive Black Hole Binaries

open access: yesThe Astrophysical Journal
The nano-Hertz gravitational wave background (GWB) is a key probe of supermassive black hole (SMBH) formation and evolution if the background arises predominantly from SMBH binaries (SMBHBs).
Jean J. Somalwar, Vikram Ravi
doaj   +1 more source

Mapping the Stellar Kinematics in the Central 240 Parsecs of M87 with the James Webb Space Telescope [PDF]

open access: green
Refa M. Al-Amri   +4 more
openalex   +1 more source

Measuring Tracers of Planet Formation in the Atmosphere of WASP-77A b: Substellar O/H and C/H Ratios, with a Stellar C/O Ratio and a Potentially Superstellar Ti/H Ratio

open access: yesThe Astrophysical Journal Letters
We present a comprehensive atmospheric retrieval study of the hot Jupiter WASP-77A b using eclipse observations from the Hubble Space Telescope (HST) and JWST.
Billy Edwards, Quentin Changeat
doaj   +1 more source

LARGE SCALE REFRIGERATION PLANT FOR GROUND TESTING THE JAMES WEBB TELESCOPE AT NASA JOHNSON SPACE CENTER [PDF]

open access: bronze, 2010
P Arnold   +10 more
openalex   +1 more source

Optical Design and Status of the Large Ultra-Violet Optical Infrared Surveyor (LUVOIR) [PDF]

open access: yes
"In preparation for the Astrophysics 2020 Decadal Survey NASA's Goddard Space Flight Center is studying a segmented aperture telescope with broad astrophysics, solar system, and exoplanet science capability called the Large Ultra-Violet Optical Infrared ...
Bolcar, Matthew Ryan   +6 more
core   +1 more source

Observing Near-Earth Objects with the James Webb Space Telescope [PDF]

open access: bronze, 2016
Cristina A. Thomas   +8 more
openalex   +1 more source

The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope -- IV. Aperture Masking Interferometry [PDF]

open access: green, 2022
Anand Sivaramakrishnan   +38 more
openalex   +1 more source

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