Results 291 to 300 of about 2,038,333 (328)

JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e

Astrophysical Journal Letters
TRAPPIST-1 e is one of the very few rocky exoplanets that is both amenable to atmospheric characterization and resides in the habitable zone of its star—located at a distance from its star such that it might, with the right atmosphere, sustain liquid ...
Néstor Espinoza, N. Allen, A. Glidden, N. Lewis, S. Seager, Caleb I. Cañas, D. Grant, A. Gressier, S. Courreges, Kevin B. Stevenson, S. Ranjan, Knicole Colón, Brett M. Morris, R. J. MacDonald, Douglas Long, H. Wakeford, Jeff A. Valenti, L. Alderson, N. Batalha, R. Challener, Jingcheng Huang, Zifan Lin, D. Louie, Elijah Mullens, Daniel Valentine, C. M. Mountain, L. Pueyo, Marshall D. Perrin, A. Bellini, Jens Kammerer, M. Libralato, I. Rebollido, E. Rickman, S. T. Sohn, R. P. van der Marel   +34 more
semanticscholar   +1 more source

Moon formation and habitability in the circumplanetary habitable zone

2022
<p>We investigate the efficiency of moon formation around giant planets with numerical N-body simulations and study the habitability of Earth-sized, newly formed moons. Our results show that by the end of the moon formation process the individual mass of moons is higher, if the planet is in a close orbit around the host star. We also find
Vera Dobos, Zoltán Dencs, Zsolt Regály
openaire   +1 more source

Revisiting the multi-planetary system of the nearby star HD 20794. Confirmation of a low-mass planet in the habitable zone of a nearby G-dwarf

Astronomy & Astrophysics
Close-by Earth analogs and super-Earths are of primary importance because they will be preferential targets for the next generation of direct imaging instruments.
N. Nari, X. Dumusque, N. Hara, A. Suárez Mascareño, M. Cretignier, J. G. González Hernández, A. K. Stefanov, V. Passegger, R. Rebolo, F. Pepe, N. Santos, S. Cristiani, J. Faria, P. Figueira, A. Sozzetti, M. Z. Zapatero Osorio, V. Adibekyan, Y. Alibert, C. Allende Prieto, F. Bouchy, S. Benatti, A. Castro-González, V. D'Odorico, M. Damasso, J. Delisle, P. Di Marcantonio, D. Ehrenreich, R. Génova-Santos, M. Hobson, B. Lavie, J. Lillo-Box, G. Lo Curto, C. Lovis, C. Martins, A. Mehner, G. Micela, P. Molaro, C. Mordasini, N. Nunes, E. Pallé, S. Quanz, D. Ségransan, A.M. Silva, S. Sousa, S. Udry, N. Unger, J. Venturini   +46 more
semanticscholar   +1 more source

Hic Sunt Dracones: Uncovering Dynamical Perturbers within the Habitable Zone

Astronomical Journal
The continuing exploration of neighboring planetary systems is providing deeper insights into the relative prevalence of various system architectures, particularly with respect to the solar system.
S. Kane, Jennifer A. Burt
semanticscholar   +1 more source

Habitable Zone Limits for Dry Planets

Astrobiology, 2011
Most discussion of habitable planets has focused on Earth-like planets with globally abundant liquid water. For an “aqua planet” like Earth, the surface freezes if far from its sun, and the water vapor greenhouse effect runs away if too close.
Yutaka, Abe, Ayako, Abe-Ouchi, Norman H, Sleep, Kevin J, Zahnle   +3 more
openaire   +2 more sources

Persistence of flare-driven atmospheric chemistry on rocky habitable zone worlds

Nature Astronomy, 2020
Low-mass stars show evidence of vigorous magnetic activity in the form of large flares and coronal mass ejections. Such space weather events may have important ramifications for the habitability and observational fingerprints of exoplanetary atmospheres.
Howard Chen, Z. Zhan, A. Youngblood, E. Wolf, A. Feinstein, D. Horton   +5 more
semanticscholar   +1 more source

Expanding the Habitable Zone

Science, 1999
PLANETARY SYSTEMSNew finds on Earth, such as colonies of bacteria deep underground, have suggested that organisms can thrive even if sealed off from the sun, by living on chemical rather than solar energy. Therefore the possible environments for life in space, once restricted to the relatively narrow slice of the solar system inside the martian orbit ...
openaire   +1 more source

Methane as a dominant absorber in the habitable-zone sub-Neptune K2-18 b

Nature Astronomy, 2020
In their Letter, Tsiaras et al.$^1$ reported the detection of water vapour in the atmosphere of K2-18 b, an exoplanet of 7 to 10 Earth masses located in the habitable zone of an M-dwarf star.
B. B'ezard, B. Charnay, D. Blain
semanticscholar   +1 more source

The Galactic Habitable Zone

2005
We propose the concept of a "Galactic Habitable Zone" (GHZ). Similar to the circumstellar habitable zone (CHZ), the GHZ is that region in a spiral galaxy where life can exist. The width of the GHZ is controlled by two factors. The inner (closest to the center of the galaxy) limit is set by threats to complex life: nearby transient sources of ionizing ...
openaire   +1 more source

The Habitable Zone: Basic Concepts

2013
The detection of exoplanets has undergone extraordinary growth over the past couple of decades since substellar companions were detected around HD 114762 (Latham et al., 9 1992, and 51 Peg (Mayor and Queloz, 1995. From there, the field rapidly expanded from the exclusivity of exoplanet detection to include exoplanet characterization.
openaire   +1 more source