Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Owen R, Lehmer"'
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
In the habitable zone concept, a planet’s carbon dioxide-water greenhouse maintains surface liquid water. Here, the authors estimate how many Earthlike exoplanets are needed to detect a relationship between stellar flux and the atmospheric carbon d
Externí odkaz:
https://doaj.org/article/3903cbda6ee440deb1f29d264d487b15
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
In the search for life on other planets, the presence of photosynthetic surface vegetation may be detectable from the colors of light it reflects. On the modern Earth, this spectral reflectance is characterized by a steep increase in reflectance betw
Externí odkaz:
https://doaj.org/article/1d77a00494464bae89518404267d7921
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Nature Communications
Nature Communications
In the conventional habitable zone (HZ) concept, a CO$_{2}$-H$_2$O greenhouse maintains surface liquid water. Through the water-mediated carbonate-silicate weathering cycle, atmospheric CO$_{2}$ partial pressure (pCO$_{2}$) responds to changes in sur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::903bcee20d81839dc95359d69a4c0a72
http://arxiv.org/abs/2012.00819
http://arxiv.org/abs/2012.00819
Autor:
Owen R, Lehmer, David C, Catling
Publikováno v:
Astrophys J
Recent observations and analysis of low mass (
Publikováno v:
Science Advances
Iron-rich micrometeorites from a 2.7 billion-year-old limestone could constrain atmospheric CO2 levels on the early Earth.
Earth’s atmospheric composition during the Archean eon of 4 to 2.5 billion years ago has few constraints. However, the g
Earth’s atmospheric composition during the Archean eon of 4 to 2.5 billion years ago has few constraints. However, the g
Autor:
Owen R. Lehmer, David C. Catling
Publikováno v:
The Astrophysical Journal. 894:81
The gas giant planets in the Solar System have a retinue of icy moons, and we expect giant exoplanets to have similar satellite systems. If a Jupiter-like planet were to migrate toward its parent star the icy moons orbiting it would evaporate, creati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::483b254ca9a8771547e62212e786fb3a
http://arxiv.org/abs/1703.06936
http://arxiv.org/abs/1703.06936
Rocky Worlds Limited to ~1.8 Earth Radii by Atmospheric Escape During a Star's Extreme UV Saturation
Autor:
Owen R. Lehmer, David C. Catling
Recent observations and analysis of low mass (
Comment: Submitted to ApJ on May 23, 2017; Accepted on July 11, 2017
Comment: Submitted to ApJ on May 23, 2017; Accepted on July 11, 2017
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d018b2dcd76143eb56c9c36b120ab57
Publikováno v:
The Astrophysical Journal. 859:171
In the search for life around cool stars, the presence of atmospheric oxygen is a prominent biosignature, as it may indicate oxygenic photosynthesis (OP) on the planetary surface. On Earth, most oxygenic photosynthesizing organisms (OPOs) use photons
Publikováno v:
Astrophysical Journal; 6/1/2018, Vol. 859 Issue 2, p1-1, 1p