Results 21 to 30 of about 1,190,159 (371)

(704) Interamnia: a transitional object between a dwarf planet and a typical irregular-shaped minor body [PDF]

open access: bronzeAstronomy & Astrophysics, 2019
Context. With an estimated diameter in the 320–350 km range, (704) Interamnia is the fifth largest main belt asteroid and one of the few bodies that fills the gap in size between the four largest bodies with D > 400 km (Ceres, Vesta, Pallas and Hygiea ...
J. Hanuš   +99 more
openalex   +3 more sources

Early Planet Formation in Embedded Disks (eDisk). II. Limited Dust Settling and Prominent Snow Surfaces in the Edge-on Class I Disk IRAS 04302+2247 [PDF]

open access: yesAstrophysical Journal, 2023
While dust disks around optically visible, Class II protostars are found to be vertically thin, when and how dust settles to the midplane are unclear. As part of the Atacama Large Millimeter/submillimeter Array large program, Early Planet Formation in ...
Zheyu Lin   +28 more
semanticscholar   +1 more source

Chromium on Mercury: New Results From the MESSENGER X‐Ray Spectrometer and Implications for the Innermost Planet's Geochemical Evolution [PDF]

open access: yesJournal of Geophysical Research: Planets, 2023
Mercury, the innermost planet, formed under highly reduced conditions, based mainly on surface Fe, S, and Si abundances determined from MESSENGER mission data.
L. Nittler   +8 more
semanticscholar   +1 more source

Detectability of the Yarkovsky Effect in the Main Belt

open access: yesThe Planetary Science Journal, 2023
We attempt to detect a signal of Yarkovsky-related acceleration in the orbits of 134 main belt asteroids (MBAs) we observed with the University of Hawai’i 88 inch telescope, supplemented with observations publicly available from the Minor Planet Center ...
Denise Hung   +3 more
doaj   +1 more source

A disintegrating minor planet transiting a white dwarf [PDF]

open access: yesNature, 2015
Most stars become white dwarfs after they have exhausted their nuclear fuel (the Sun will be one such). Between one-quarter and one-half of white dwarfs have elements heavier than helium in their atmospheres, even though these elements ought to sink ...
A. Vanderburg   +18 more
semanticscholar   +1 more source

The unexpected narrowness of eccentric debris rings: a sign of eccentricity during the protoplanetary disc phase [PDF]

open access: yesRoyal Society Open Science, 2020
This paper shows that the eccentric debris rings seen around the stars Fomalhaut and HD 202628 are narrower than expected in the standard eccentric planet perturbation scenario (sometimes referred to as ‘pericentre glow’). The standard scenario posits an
Grant M. Kennedy
doaj   +1 more source

Constraining planet formation around 6M⊙-8M⊙ stars [PDF]

open access: yes, 2020
Identifying planets around O-type and B-type stars is inherently difficult; the most massive known planet host has a mass of only about 3M⊙. However, planetary systems which survive the transformation of their host stars into white dwarfs can be detected
Gaensicke, Boris T.   +6 more
core   +2 more sources

MOA-2016-BLG-319Lb: Microlensing Planet Subject to Rare Minor-image Perturbation Degeneracy in Determining Planet Parameters [PDF]

open access: yesAstronomical Journal, 2018
We present the analysis of the planetary microlensing event MOA-2016-BLG-319. The event light curve is characterized by a brief (∼3 days) anomaly near the peak produced by minor-image perturbations.
C. Han   +44 more
semanticscholar   +1 more source

DIVISION III / SERVICE MINOR PLANET CENTER [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2008
T. B. Spahr   +2 more
openalex   +2 more sources

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