Results 31 to 40 of about 4,018,158 (274)
Isotopic evolution of planetary crusts by hypervelocity impacts evidenced by Fe in microtektites
Nature Communications, 2021 Fe isotopic composition of the distal ejecta of a terrestrial impact crater records both evaporation and condensation, refining the nature of the isotopic fractionation taking place during hypervelocity impacts in the Solar System.
S. M. Chernonozhkin +12 more
doaj +1 more source
Why do more massive stars host larger planets? [PDF]
A&A 652, A110 (2021), 2021 It has been suggested that planetary radii increase with the stellar mass, for planets below 6 R$_{\oplus}$ and host below 1 M$_\odot$. In this study, we explore whether this inferred relation between planetary size and the host star's mass can be explained by a larger planetary mass among planets orbiting more massive stars, inflation of the planetary
arxiv +1 more source
Planetary mass–radius relations across the galaxy [PDF]
Astronomy & Astrophysics, 2020 Context. Planet formation theory suggests that planet bulk compositions are likely to reflect the chemical abundance ratios of their host star’s photosphere.
A. Michel +3 more
semanticscholar +1 more source
A Theoretical Framework for the Mass Distribution of Gas Giant Planets forming through the Core Accretion Paradigm [PDF]
, 2021 This paper constructs a theoretical framework for calculating the distribution of masses for gas giant planets forming via the core accretion paradigm. Starting with known properties of circumstellar disks, we present models for the planetary mass distribution over the range $0.1M_J < M_{\rm p} < 10M_J$.
arxiv +1 more source
The New Generation Planetary Population Synthesis (NGPPS). IV. Planetary systems around low-mass stars [PDF]
Astronomy & Astrophysics, 2021 Previous work concerning planet formation around low-mass stars has often been limited to large planets and individual systems. As current surveys routinely detect planets down to terrestrial size in these systems, a more holistic approach that reflects ...
R. Burn +7 more
semanticscholar +1 more source
Natural Products Containing ‘Rare’ Organophosphorus Functional Groups
Molecules, 2019 Phosphorous-containing molecules are essential constituents of all living cells. While the phosphate functional group is very common in small molecule natural products, nucleic acids, and as chemical modification in protein and peptides, phosphorous can ...
Janusz J. Petkowski +2 more
doaj +1 more source
Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70 [PDF]
Astronomy & Astrophysics, 2018 Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime interest to understand the physical and chemical conditions under which planet formation takes place.
M. Keppler +135 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 The magnetic activity of a star—which modulates the stellar wind outflow—shapes the immediate environments of orbiting (exo)planets and induces atmospheric loss, thereby impacting their habitability.
Sakshi Gupta +2 more
doaj +1 more source
The Astronomical Journal, 2023 We present the analysis of seven microlensing planetary events with planet/host mass ratios q < 10 ^−4 : KMT-2017-BLG-1194, KMT-2017-BLG-0428, KMT-2019-BLG-1806, KMT-2017-BLG-1003, KMT-2019-BLG-1367, OGLE-2017-BLG-1806, and KMT-2016-BLG-1105.
Weicheng Zang +42 more
doaj +1 more source
Cloud Atlas: Rotational Spectral Modulations and Potential Sulfide Clouds in the Planetary-mass, Late T-type Companion Ross 458C [PDF]
Astrophysical Journal, 2019 Measurements of photometric variability at different wavelengths provide insights into the vertical cloud structure of brown dwarfs and planetary-mass objects.
E. Manjavacas +13 more
semanticscholar +1 more source