Results 51 to 60 of about 281 (168)
Coevolution of phyllosilicate, carbon, sulfide, and apatite in Ryugu's parent body
Meteoritics &Planetary Science, Volume 59, Issue 8, Page 2073-2096, August 2024.Abstract We analyzed an asteroid Ryugu sample returned to Earth by JAXA's Hayabusa2 mission using nanoIR, SEM, and TEM microscopy. We identified multiple distinct carbon reservoirs within the phyllosilicate matrix and demonstrate infrared spectral affinities for some of the carbon to insoluble organic matter (IOM).
Zack Gainsforth +31 more
wiley +1 more source
Limitations of the modified blackbody fit method for determining molecular cloud properties
Astronomische Nachrichten, Volume 345, Issue 4, May 2024.Abstract Achieving a comprehensive understanding of the star and planet formation process is one of the fundamental tasks of astrophysics, requiring detailed knowledge of the physical conditions during the different phases of this process. During the earliest stages, that is, concerning physical processes in molecular clouds and filaments, the column ...
Niko Zielinski, Sebastian Wolf
wiley +1 more source
Rotational evolution of solar-type protostars during the star-disk interaction phase [PDF]
Astronomy & Astrophysics, 2019 Context. The early pre-main sequence phase during which solar-mass stars are still likely surrounded by an accretion disk represents a puzzling stage of their rotational evolution. While solar-mass stars are accreting and contracting, they do not seem to spin up substantially.
F. Gallet, C. Zanni, L. Amard
openaire +5 more sources
Pulsation in pre-main sequence stars: TESS observations & models from accreting protostars
, 2021 T. Steindl +4 more
openalex +2 more sources
Probing the physics of star formation (ProPStar) [PDF]
Astronomy & AstrophysicsContext . The detections of narrow channels of accretion toward protostellar disks, known as streamers, have increased in number in the last few years. However, it is unclear whether streamers are a common feature around protostars that were previously missed, or if they are a rare phenomenon.
María Teresa Valdivia-Mena +11 more
openaire +5 more sources
SpectacularSpitzerImages of the Trifid Nebula: Protostars in a Young, Massive‐Star‐forming Region
The Astrophysical Journal, 2006 Spitzer IRAC and MIPS images of the Trifid Nebula (M20) reveal its spectacular appearance in infrared light, highlighting the nebula's special evolutionary stage. The images feature recently-formed massive protostars and numerous young stellar objects, and a single O star that illuminates the surrounding molecular cloud from which it formed, and unveil
Rho, Jeonghee +3 more
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88th Annual Meeting of the Meteoritical Society 2026: Contents
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S2-S47, August 2026.
wiley +1 more source
Variability of Deeply Embedded Protostars: A New Direction for Star Formation?
, 2017 The formation of a star is a dynamic process fed by the gravitational collapse of a molecular cloud core. Theoretical models and observations suggest that the majority of this infalling material settles into a protoplanetary disk before reaching the (proto)star and therefore that disk accretion processes are responsible for the rate at which the (proto)
openaire +2 more sources
88th Annual Meeting of the Meteoritical Society 2026: Abstracts
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley +1 more source