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The initial abundance of radioactive heat producing isotopes in the interior of a terrestrial planet are important drivers of its thermal evolution and the related tectonics and possible evolution to an Earth-like habitat. The moderately…

地球与行星天体物理 · 物理学 2022-11-16 N. Erkaev , M. Scherf , O. Herbort , H. Lammer , P. Odert , D. Kubyshkina , M. Leitzinger , P. Woitke , C. O'Neill

In this work, the analysis of the stacked projected temperature profile of twelve galaxy clusters of the X-COP sample is performed via the SuperModel, a tool for investigating the intracluster medium thermodynamic properties already tested…

宇宙学与河外天体物理 · 物理学 2019-03-13 Roberto Fusco-Femiano

Until recently, infrared observations of exoplanetary atmospheres have typically been interpreted using models that assumed solar elemental abundances. With the chemical composition fixed, attempts have been made to classify hot Jupiter…

地球与行星天体物理 · 物理学 2015-06-11 Nikku Madhusudhan

M dwarfs are key targets for high-resolution spectroscopic analyses due to a high incidence of these stars in the solar neighbourhood and their importance as exoplanetary hosts. Several methodological challenges make such analyses…

太阳与恒星天体物理 · 物理学 2021-06-02 T. Olander , U. Heiter , O. Kochukhov

We find that variations in the UV emissions of cool M-dwarf stars have a potentially large impact upon atmospheric biosignatures in simulations of Earth-like exoplanets i.e. planets with Earths development, and biomass and a molecular…

地球与行星天体物理 · 物理学 2015-07-13 John Lee Grenfell , Stefanie Gebauer , Philip von Paris , Mareike Godolt , Heike Rauer

Strongly irradiated exoplanets develop extended atmospheres that can be utilized to probe the deeper planet layers. This connection is particularly useful in the study of small exoplanets, whose bulk atmospheres are challenging to…

地球与行星天体物理 · 物理学 2021-02-02 A. García Muñoz , L. Fossati , A. Youngblood , N. Nettelmann , D. Gandolfi , J. Cabrera , H. Rauer

The capacity of proteins to interact specifically with one another underlies our conceptual understanding of how living systems function. Systems-level study of specificity in protein-protein interactions is complicated by the fact that the…

生物大分子 · 定量生物学 2009-11-13 Eric Deeds , orr Ashenberg , Jaline Gerardine , Eugene Shakhnovich

Some super Earths and mini Neptunes will likely have thick atmospheres that are not H2-dominated. We have developed a photochemistry-thermochemistry kinetic-transport model for exploring the compositions of thick atmospheres on super Earths…

地球与行星天体物理 · 物理学 2015-06-18 Renyu Hu , Sara Seager

The detection of organic molecules with increasing complexity and potential biological relevance is opening the possibility to understand the formation of the building blocks of life in the interstellar medium. One of the families of…

星系天体物理 · 物理学 2017-02-22 V. M. Rivilla , M. T. Beltrán , J. Martín-Pintado , F. Fontani , P. Caselli , R. Cesaroni

Context. The characterisation of exoplanet atmospheres has shown a wide diversity in compositions. Hot Jupiters have the appropriate temperatures to host metallic compounds, which should be detectable through transmission spectroscopy.…

地球与行星天体物理 · 物理学 2021-02-03 Marrick Braam , Floris F. S. van der Tak , Katy L. Chubb , Michiel Min

The lamellar cuprate superconductors exhibit the highest ambient-pressure superconducting transition temperatures (T$_C$) and, after more than three decades of extraordinary research activity, continue to pose formidable scientific…

Metagenome assembly is the process of transforming a set of short, overlapping, and potentially erroneous DNA segments from environmental samples into the accurate representation of the underlying microbiomes's genomes. State-of-the-art…

分布式、并行与集群计算 · 计算机科学 2018-09-20 Evangelos Georganas , Rob Egan , Steven Hofmeyr , Eugene Goltsman , Bill Arndt , Andrew Tritt , Aydin Buluc , Leonid Oliker , Katherine Yelick

The NEXT experiment aims at searching for the hypothetical neutrinoless double-beta decay from the ${}^{136}$Xe isotope using a high-purity xenon TPC. Efficient discrimination of the events through pattern recognition of the topology of…

Cold brown dwarfs are excellent analogs of widely separated, gas giant exoplanets, and provide insight into the potential atmospheric chemistry and physics we may encounter in objects discovered by future direct imaging surveys. We present…

Aims: The production of saturated organic molecules in hot cores and corinos is not well understood. The standard approach is to assume that, as temperatures heat up during star formation, methanol and other species evaporate from grain…

天体物理学 · 物理学 2009-11-11 R. T. Garrod , E. Herbst

The heat capacity (C) of a mesoscopic nonsuperconducting fermion system treated as a canonical ensemble of independent particles is studied in a wide range of particle numbers and temperatures which vary from values close to zero up to the…

统计力学 · 物理学 2008-11-14 N. K. Kuzmenko , V. M. Mikhajlov

Evolutionary models of massive stars are quasi-exclusively computed using an Eddington gray atmosphere. This approximation does not accurately describe the complex physical phenomena occurring in the atmosphere of massive stars. We aim to…

太阳与恒星天体物理 · 物理学 2026-05-19 Thomas Voje , Ana Palacios , Fabrice Martins

The recent improvements in cryo-electron microscopy (cryo-EM) in the past few years are now allowing to observe molecular complexes at atomic resolution. As a consequence, numerous structures derived from cryo-EM are now available in the…

生物大分子 · 定量生物学 2020-05-04 Mikael Trellet , Gydo van Zundert , Alexandre M. J. J. Bonvin

Resolving physical and chemical structures in the vicinity of a protostar is of fundamental importance for elucidating their evolution to a planetary system. In this context, we have conducted 1.2 mm observations toward the low-mass…

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