Results 81 to 90 of about 182,451 (170)

Extrasolar Planets: Swiss Society for Astrophysics and Astronomy

, 2006
Research on extrasolar planets is one of the most exciting fields of activity in astrophysics. In a decade only, a huge step forward has been made from the early speculations on the existence of planets orbiting "other stars" to the first discoveries and
Guillot, Tristan, Cassen, Patrick, Quirrenbach, Andreas   +2 more
core   +1 more source

Validation of a Third Earth-sized Planet in the TOI-2267 Binary System

The Astronomical Journal
We report the validation of a third terrestrial exoplanet in the nearby (22 pc) TOI-2267 system. TOI-2267 is a binary system with stellar components TOI-2267A (M5, 3030 K) and TOI-2267B (M6, 2930 K), with an on-sky separation of 0 $\mathop{.}\limits ...
Michael Greklek-McKeon, Jonathan Gomez Barrientos, Heather A. Knutson, Sebastián Zúñiga-Fernández, Francisco J. Pozuelos, Morgan Saidel, W. Garrett Levine, Renyu Hu, Fei Dai, Tansu Daylan, John P. Doty, David R. Rodriguez, Joseph D. Twicken, David W. Latham, Jon M. Jenkins, Richard P. Schwarz   +15 more
doaj   +1 more source

The Effect of Spectral Resolution on Biosignature Detection via Reflected-light Observations of the Earth through Time

The Astrophysical Journal
NASA’s Habitable Worlds Observatory (HWO) will search for biosignatures on Earth-like exoplanets using reflected light spectroscopy. A critical instrument design parameter is resolving power, which must balance biosignature detectability against exposure
Samantha Gilbert-Janizek, Jacob Lustig-Yaeger, Joshua Krissansen-Totton   +2 more
doaj   +1 more source

The Atmospheres of Extrasolar Planets [PDF]

, 2007
In this chapter we examine what can be learned about extrasolar planet atmospheres by concentrating on a class of planets that transit their parent stars. As discussed in the previous chapter, one way of detecting an extrasolar planet is by observing the
Seager, S., Richardson, L. J.
core  

Detecting extrasolar planets with sparse aperture masking

, 2016
Extrasolar planets are directly detected most easily when they are young and can have contrasts only a few hundred times fainter than their host stars at near- and mid- infrared wavelengths.
Ireland, Michael
core   +1 more source

Stellar Abundances as Probes of Rocky Exoplanet Interiors: The Mantle Composition and Mineralogy of GJ 486b

The Astrophysical Journal
Over the past three decades, hundreds of rocky exoplanets have been discovered. Some of these show atmospheric signatures indicative of diverse chemical compositions.
Harshit Krishna, Asmit Gupta, Sneha Bhowmik, Chandan K. Sahu, Sudipta Mridha, Liton Majumdar   +5 more
doaj   +1 more source

Planetary population synthesis and the emergence of four classes of planetary system architectures. [PDF]

Eur Phys J Plus, 2023
Emsenhuber A, Mordasini C, Burn R.
europepmc   +1 more source

The Coupled Impacts of Atmospheric Composition and Obliquity on the Climate Dynamics of TRAPPIST-1e

The Astrophysical Journal
Planets in multiplanet systems are expected to migrate inward as near-resonant chains, thus allowing them to undergo gravitational planet–planet interactions and possibly maintain a nonzero obliquity.
Tobi Hammond, Thaddeus D. Komacek
doaj   +1 more source

Synergistic Effects of Ocean Salinity and Planetary Obliquity Enhance Habitability of Cold Exo-Earths

The Astrophysical Journal
Past work has shown that ocean salinity and planetary obliquity both influence the climates of Earth-like exoplanets throughout the habitable zone of Sun-like stars.
Kyle Batra, Stephanie Olson, Edward W. Schwieterman   +2 more
doaj   +1 more source

Large planets may not form fractionally large moons. [PDF]

Nat Commun, 2022
Nakajima M, Genda H, Asphaug E, Ida S.
europepmc   +1 more source