Earth-mass planets with He atmospheres in the habitable zone of Sun-like stars [0.03%]
宜居带类太阳系地球质量氦行星系外行星探测难度较高
Helmut Lammer,Manuel Scherf,Nikolai V Erkaev et al.
Helmut Lammer et al.
The discovery of many low-mass exoplanets, including several planets within the habitable zone of their host stars, has led to the question of which kind of atmosphere surrounds them. Recent exoplanet detections have revealed the existence ...
A transiting giant planet in orbit around a 0.2-solar-mass host star [0.03%]
一颗巨型系外行星绕着一颗0.2太阳质量的恒星运转
Edward M Bryant,Andrés Jordán,Joel D Hartman et al.
Edward M Bryant et al.
Planet formation models indicate that the formation of giant planets is substantially harder around low-mass stars due to the scaling of protoplanetary disc masses with stellar mass. The discovery of giant planets orbiting such low-mass sta...
D J Whalen,M A Latif,C Jessop
D J Whalen
Primordial (or population III) supernovae were the first nucleosynthetic engines in the Universe, and they forged the heavy elements required for the later formation of planets and life. Water, in particular, is thought to be crucial to the...
Weichen Wang,Sebastiano Cantalupo,Antonio Pensabene et al.
Weichen Wang et al.
Observational studies have shown that galaxy disks were already in place in the first few billion years of the Universe. The early disks detected so far, with typical half-light radii of 3 kpc at stellar masses around 1011 M ⊙ for redshift...
Photometric detection at 7.7 μm of a galaxy beyond redshift 14 with JWST/MIRI [0.03%]
詹姆斯韦伯空间望远镜拍摄的红移超过14的星系在7.7微米波长下的光度检测结果
Jakob M Helton,George H Rieke,Stacey Alberts et al.
Jakob M Helton et al.
The James Webb Space Telescope (JWST) has spectroscopically confirmed numerous galaxies at z > 10. While weak rest-frame ultraviolet emission lines have only been seen in a handful of sources, the stronger rest-frame optical emission lines ...
Discovery of [Formula: see text] and infrared aurorae at Neptune with JWST [0.03%]
詹姆斯韦伯空间望远镜发现海王星的[Formula: see text]和红外极光
Henrik Melin,Luke Moore,Leigh N Fletcher et al.
Henrik Melin et al.
Emissions from the upper-atmospheric molecular ion H 3 + have been used to study the global-scale interactions of Jupiter, Saturn and Uranus with their surrounding space environments for over 30 years, revealing the processes shaping the...
A connection between proto-neutron-star Tayler-Spruit dynamos and low-field magnetars [0.03%]
关于原型中子星的taylerspruit发电机和弱磁场磁星之间的联系
Andrei Igoshev,Paul Barrère,Raphaël Raynaud et al.
Andrei Igoshev et al.
Low-field magnetars have dipolar magnetic fields of 1012-1013 G, 10-100 times weaker than the values of magnetic-field strength B ≈ 1014-1015 G used to define classical magnetars, yet they produce similar X-ray bursts and outbursts. Using ...
Seismic resurfacing of 433 Eros indicative of a highly dissipative interior for large near-Earth asteroids [0.03%]
地震重新覆盖433号爱神星表明大型近地 asteroids 具有高度耗散的内部
R-L Ballouz,C M Ernst,O S Barnouin et al.
R-L Ballouz et al.
An asteroid's interior dictates how its space environment changes its shape and surface, which provides a record of the collisional and dynamical evolution of the Solar System. Knowledge of asteroid interiors also enables the formulation of...
A supersolar oxygen abundance supported by hydrodynamic modelling of Jupiter's atmosphere [0.03%]
木星大气流体动力学模型支持的超太阳氧丰度
Ali Hyder,Cheng Li,Nancy Chanover et al.
Ali Hyder et al.
Jupiter's oxygen content is inextricably tied to its formation history and the evolution of the early Solar System. Recent one-dimensional thermochemical modelling of CO showed that the planet's bulk water content could be subsolar, in star...
Anna de Graaff,David J Setton,Gabriel Brammer et al.
Anna de Graaff et al.
Within the established framework of structure formation, galaxies start as systems of low stellar mass and gradually grow into far more massive galaxies. The existence of massive galaxies in the first billion years of the Universe, as sugge...