Results 61 to 70 of about 2,728,150 (158)

A Broad Set of Solar and Cosmochemical Data Indicates High C-N-O Abundances for the Solar System

The Astrophysical Journal
We examine the role of refractory organics as a major C carrier in the outer protosolar nebula and its implications for the compositions of large Kuiper Belt objects (KBOs) and CI chondrites.
Ngoc Truong, Christopher R. Glein, Jonathan I. Lunine   +2 more
doaj   +1 more source

Prominent Mid-infrared Excess of the Dwarf Planet (136472) Makemake Discovered by JWST/MIRI Indicates Ongoing Activity

The Astrophysical Journal Letters
We report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss, Thomas G. Müller, Anikó Farkas-Takács, Attila Moór, Silvia Protopapa, Alex H. Parker, Pablo Santos-Sanz, Jose Luis Ortiz, Bryan J. Holler, Ian Wong, John Stansberry, Estela Fernández-Valenzuela, Christopher R. Glein, Emmanuel Lellouch, Esa Vilenius, Csilla E. Kalup, Zsolt Regály, Róbert Szakáts, Gábor Marton, András Pál, Gyula M. Szabó   +20 more
doaj   +1 more source

Characterizing Hydrated Sulfates and Altered Phases in Jezero Crater Fan and Floor Geologic Units With SHERLOC on Mars 2020

Journal of Geophysical Research: Planets, Volume 129, Issue 7, July 2024.
Abstract The Mars 2020 Perseverance rover has explored fluvio‐lacustrine sedimentary rocks within Jezero crater. Prior work showed that igneous crater floor Séítah and Máaz formations have mafic mineralogy with alteration phases that indicate multiple episodes of aqueous alteration.
Yu Yu Phua, Bethany L. Ehlmann, Sandra Siljeström, Andrew D. Czaja, Pierre Beck, Stephanie Connell, Roger C. Wiens, Ryan S. Jakubek, Rebecca M. E. Williams, Maria‐Paz Zorzano, Michelle E. Minitti, Alyssa C. Pascuzzo, Kevin P. Hand, Rohit Bhartia, Linda C. Kah, Lucia Mandon, Joseph Razzell Hollis, Eva L. Scheller, Sunanda Sharma, Andrew Steele, Kyle Uckert, Kenneth H. Williford, Anastasia G. Yanchilina   +22 more
wiley   +1 more source

Challenge in Arrokoth’s Single Merger to Achieve the Shape’s Principal Axis Configuration

The Planetary Science Journal
The cold-classical Kuiper Belt Object 486958 Arrokoth is a contact binary composed of two flattened lobes, Weeyo and Wenu, closely aligned along their principal axes, despite each lobe having a highly irregular shape.
Ketan Kamat, Ryota Nakano, Masatoshi Hirabayashi   +2 more
doaj   +1 more source

Occultations by Kuiper belt objects.

, 1997
Objects in the Kuiper belt are small and far away thus difficult to study in detail even with the best telescopes available at earth. For much of the early history of the Kuiper belt, studies of the compositions of the objects were relegated to ...
Michael E Brown
core  

The Trojan-like Colors of Low-perihelion Kuiper Belt Objects [PDF]

An important testable prediction of dynamical instability models for the early evolution of the solar system is that Jupiter Trojans share a source population with the Kuiper Belt.
Matthew Belyakov, Michael E. Brown, Alya Al-Kibbi   +2 more
core   +2 more sources

Spectral Characterization of the Organic- and Methanol-rich Cliff-type Trans-Neptunian Objects

The Astronomical Journal
Trans-Neptunian objects (TNOs) harbor pristine materials from the early solar system. The James Webb Space Telescope offers major insights into the spectral classification of these small bodies.
Lucas T. McClure, Joshua P. Emery, Noemi Pinilla-Alonso, Rosario Brunetto, Sasha Cryan, Elsa Hénault, Brittany Harvison, Bryan J. Holler, Yvonne Pendleton, Dale Cruikshank, John Stansberry, Aurelie Guilbert-Lepoutre, Javier Licandro, Vania Lorenzi, Thomas Müller, Ana Carolina de Souza-Feliciano, Charles Schambeau, Nuno Peixinho, Michele Bannister   +18 more
doaj   +1 more source

� 2002. The American Astronomical Society. All rights reserved. Printed in U.S.A. A CORRELATION BETWEEN INCLINATION AND COLOR IN THE CLASSICAL KUIPER BELT

, 2007
We have measured broadband optical BVR photometry of 24 classical and scattered Kuiper belt objects (KBOs), approximately doubling the published sample of colors for these classes of objects.
The Astrophysical Journal, Chadwick A. Trujillo, Michael E. Brown   +2 more
core  

Rotational Study of 5:3 and 7:4 Resonant Objects within the Main Classical Trans-Neptunian Belt

The Planetary Science Journal
The 5:3 and 7:4 mean motion resonances of Neptune are at 42.3 and 43.7 au, respectively, and overlap with objects in the classical trans-Neptunian belt (Kuiper Belt).
Audrey Thirouin, Scott S. Sheppard
doaj   +1 more source

On Error Estimates for Hapke Photometric Model Parameters from Disk-integrated Phase Curves of Airless Planetary Bodies

The Planetary Science Journal
The Hapke bidirectional reflectance model is widely used to analyze photometric observations of planetary surfaces. When fitting disk-integrated data, nonuniqueness concerns arise if observations lack sufficient phase angle coverage to constrain the ...
Paul Helfenstein, Anne J. Verbiscer
doaj   +1 more source