Results 81 to 90 of about 91,815 (175)

comet-utilities: MS Thesis Release

open access: yes, 2015
<p>This Release includes all the required material for Matias Giorgio's MS Thesis: COMET Analyzer, RabbitMQ-to-MongoDB bridge, and other modules.</p ...
Matias Giorgio
core   +1 more source

The Ice Chemistry in Comets and Planet-forming Disks: Statistical Comparison of CH3OH, H2CO, and NH3 Abundance Ratios

open access: yesThe Astrophysical Journal Letters
Comets are frozen remnants of our solar system’s formation, and comparing their chemical composition to that of planet-forming systems can reveal crucial insights about our origins, potentially answering one of the most challenging questions in planetary
Manuela Lippi   +7 more
doaj   +1 more source

The Comet Interceptor mission to a dynamically new comet

open access: yes, 2023
openL'elaborato mira ad affrontare il problema del tipo di manovre orbitali richieste per lo scopo della missione Comet Interceptor, ovvero il raggiungimento di un fly-by attorno a una cometa dinamicamente nuova proveniente dalla regione esterna al ...
SIMULA, SUSANNA
core  

The Extreme Activity in Comet Hale–Bopp (C/1995 O1): Investigations of Extensive Narrowband Photoelectric Photometry

open access: yesThe Planetary Science Journal
Conventional narrowband photoelectric photometry of Comet Hale–Bopp (1995 O1) was obtained on 99 nights from mid-1995 to early-2000, yielding gas and dust production rates over an unprecedented range of time and distance. The appearance of Hale–Bopp (H-B)
David G. Schleicher   +3 more
doaj   +1 more source

EPOXI at Comet Hartley 2

open access: yes, 2011
International audienceUnderstanding how comets work-what drives their activity-is crucial to the use of comets in studying the early solar system. EPOXI (Extrasolar Planet Observation and Deep Impact Extended Investigation) flew past comet 103P/Hartley 2,
W. A. Delamere   +98 more
core   +1 more source

The Cosmic Sulfur Depletion Problem Extends to Interstellar Object 3I/ATLAS

open access: yesThe Astrophysical Journal Letters
Constraining the sulfur reservoirs of interstellar objects provides essential clues to the nature of sulfur species in protoplanetary disks and interstellar molecular clouds and a potential solution to the cosmic sulfur depletion problem. Observations of
John W. Noonan   +9 more
doaj   +1 more source

DH88 Comet, G-ACSR

open access: yes, 1934
1934 London to Australia air race. Refuelling. Entrant no.

core  

Centimeter-wave OH Observations of Comets 12P/Pons-Brooks and C/2023 A3 (Tsuchinshan-ATLAS) with FAST

open access: yesThe Astronomical Journal
We present centimeter-wave spectroscopic observations of the OH 18 cm lines in two bright comets, 12P/Pons-Brooks and C/2023 A3 (Tsuchinshan-ATLAS), conducted with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) during their 2024 ...
Long-Fei Chen   +7 more
doaj   +1 more source

Water isotopes and hydronium in the evolving coma of 67P

open access: yesAstronomy & Astrophysics
Context. Cometary isotopes preserve key information about the early Solar System and its presolar heritage. Rosetta’s long-term in situ observations of comet 67P/Churyumov–Gerasimenko offered the first opportunity to examine isotopic variability within a
Müller D. R.   +9 more
doaj   +1 more source

Coma Volatile Composition and Thermal Physics in Comet C/2022 E3 (ZTF) Measured near Closest Approach to Earth with NASA-IRTF

open access: yesThe Planetary Science Journal
The 2023 perihelion passage of comet C/2022 E3 (ZTF) afforded an opportunity to measure the abundances and spatial distributions of coma volatiles in an Oort cloud comet at high spatial resolution near its close approach to Earth ( ${{\rm{\Delta }}}_ ...
Nathan X. Roth   +11 more
doaj   +1 more source

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