Results 121 to 130 of about 16,942 (225)

TOI-880 is an Aligned, Coplanar, Multiplanet System

open access: yesThe Astronomical Journal
Although many cases of stellar spin–orbit misalignment are known, it is usually unclear whether a single planet’s orbit was tilted or if the entire protoplanetary disk was misaligned.
Elina Y. Zhang   +24 more
doaj   +1 more source

Key Sciences of SPICA Mission: Planetary Formation, Exoplanets, and our Solar System [PDF]

open access: gold, 2009
Motohide Tamura   +13 more
openalex   +1 more source

Characterization of exoplanets from their formation II: The planetary mass-radius relationship [PDF]

open access: green, 2012
C. Mordasini   +5 more
openalex   +1 more source

Boundary Layers of Circumplanetary Disks around Spinning Planets. II. Global Modes with Azimuthal Magnetic Fields

open access: yesThe Astrophysical Journal
The accretion of material from disks onto weakly magnetized objects invariably involves its traversal through a material surface, known as the boundary layer (BL).
Zhihao Fu, Shunquan Huang, Cong Yu
doaj   +1 more source

Magma Ocean Interactions Can Explain JWST Observations of the Sub-Neptune TOI-270 d

open access: yesThe Astrophysical Journal
Sub-Neptunes with substantial atmospheres may possess magma oceans in contact with the overlying gas, with chemical interactions between the atmosphere and magma playing an important role in shaping atmospheric composition.
Matthew C. Nixon   +11 more
doaj   +1 more source

Constraints on the Orbit of the Young Substellar Companion GQ Lup B from High-resolution Spectroscopy and VLTI/GRAVITY Astrometry

open access: yesThe Astrophysical Journal
Understanding the orbits of giant planets is critical for testing planet formation models, particularly at wide separations (>10 au) where traditional core accretion becomes inefficient.
Vidya Venkatesan   +101 more
doaj   +1 more source

Exoplanets and Their Characterization in the Environment of Galaxy Formation

open access: yesJournal of Material Sciences and Engineering Technology
The exploration of exoplanets has emerged as a pivotal area of research in astrophysics, particularly in understanding their formation and evolution within the context of galaxy formation. This paper presents a comprehensive review of current methodologies for exoplanet detection and characterization, emphasizing the interplay between galactic dynamics
Diriba Tolasa, Adugna Furi
openaire   +1 more source

World-leading science with SPIRou - the nIR spectropolarimeter / high-precision velocimeter for CFHT

open access: yes, 2013
SPIRou is a near-infrared (nIR) spectropolarimeter / velocimeter proposed as a new-generation instrument for CFHT. SPIRou aims in particular at becoming world-leader on two forefront science topics, (i) the quest for habitable Earth-like planets around ...
Alencar, S. H. P.   +24 more
core   +1 more source

Strong Fractionation of Deuterium and Helium in Sub-Neptune Atmospheres along the Radius Valley

open access: yesThe Astrophysical Journal
We simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deuterium
Collin Cherubim   +3 more
doaj   +1 more source

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