Results 41 to 50 of about 32,395 (222)

SOFIA Infrared Spectrophotometry of Comet C/2012 K1 (Pan-STARRS)

, 2015
We present pre-perihelion infrared 8 to 31 micron spectrophotometric and imaging observations of comet C/2012 K1 (Pan-STARRS), a dynamically new Oort Cloud comet, conducted with NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) facility ...
de Pater, Imke, Gehrz, Robert D., Harker, David E., Kelley, Michael S. P., Kolokolova, Ludmilla, Reach, William T., Russell, Ray W., Ryan, Erin L., Sitko, Michael L., Wooden, Diane H., Woodward, Charles E.   +10 more
core   +1 more source

A composite phase function for cometary dust comae

Planetary and Space Science
Comets are primitive planetesimals we can study to infer knowledge about the initial stages of formation of our Solar System. Dust is the largest mass component among cometary materials. Emitted dust particles are anysotropic scatterers of the incident solar light and their nature can be investigated with remote sensing studies. Among such studies, the
Ivano Bertini, Jean–Baptiste Vincent, Raphael Marschall, Fiorangela La Forgia, Alessandra Mura, Laura Inno, Stavro Ivanovski, Michael Küppers, Cecilia Tubiana, Vladimir Zakharov   +9 more
openaire   +1 more source

Cometary coma dust size distribution from in situ IR spectra [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Dust is the most abundant component in cometary comae. Here, we investigate the dust size distribution in 67P/Churyumov-Gerasimenko (67P/CG) using data from the Rosetta spacecraft that was in close proximity to the comet from 2014 August to 2016 September. The Visual, Infrared and Thermal Imaging Spectrometer (VIRTIS-M), spectral range of 0.25–5
G. Rinaldi, V. Della Corte, M. Fulle, F. Capaccioni, A. Rotundi, S. L. Ivanovski, D. Bockelée-Morvan, G. Filacchione, E. D’Aversa, M. T. Capria, G. P. Tozzi, S. Erard, C. Leyrat, E. Palomba, A. Longobardo, M. Ciarniello, F. Taylor, S. Mottola, M. Salatti   +18 more
openaire   +2 more sources

Revitalizing endangered mycocultural heritage in Mesoamerica: The case of the Tlahuica‐Pjiekakjoo culture

PLANTS, PEOPLE, PLANET, Volume 8, Issue 3, Page 907-923, May 2026.
The preservation and revitalization of mycocultural heritage, developed over centuries of human‐mushroom interaction, contributes to safeguarding both natural ecosystems and the promotion of sustainable rural development, one of the biggest global challenges currently faced by humankind.
Elisette Ramírez‐Carbajal, Magdalena Martínez‐Reyes, Olivia Ayala‐Vásquez, Rodríguez‐Evangelista Fabiola, Mayra Lagunes Reyes, Faustino Hernández‐Santiago, Mónica Rangel Villafranco, Fuqiang Yu, Jesús Pérez‐Moreno   +8 more
wiley   +1 more source

The Evolution in Coma Molecular Composition of Comet C/2017 K2 (PanSTARRS) across the H2O Sublimation Zone: ALMA Imaging of a H2O-dominated Coma

The Planetary Science Journal
We report a survey of molecular emission from cometary volatiles using the Atacama Large Millimeter/submillimeter Array toward comet C/2017 K2 (PanSTARRS) carried out on UT 2022 September 21, 22, and 23 at a heliocentric distance ( r _H ) of 2.1 au ...
Nathan X. Roth, Stefanie N. Milam, Martin A. Cordiner, Anthony J. Remijan, Dominique Bockelée-Morvan, Nicolas Biver, Jérémie Boissier, Steven B. Charnley, Charles E. Woodward, Lillian X. Hart, Timothy N. Proudkii   +10 more
doaj   +1 more source

Near-UV OH Prompt Emission in the Innermost Coma of 103P/Hartley 2

, 2017
The Deep Impact spacecraft fly-by of comet 103P/Hartley 2 occurred on 2010 November 4, one week after perihelion with a closest approach (CA) distance of about 700 km.
A'Hearn, Michael F., Bodewits, Dennis, Farnham, Tony, Feaga, Lori, Kelley, Michael S. P., La Forgia, Fiorangela, Protopapa, Silvia, Sunshine, Jessica   +7 more
core   +1 more source

Arbor Accidents and Asteroids

Clinical Case Reports, Volume 14, Issue 4, April 2026.
ABSTRACT Nocardia infection should be considered in immunocompromised patients presenting with concurrent pulmonary and neurological symptoms. Species identification and antimicrobial susceptibility testing are crucial. Co‐trimoxazole is the first‐line treatment.
Varun Mamidi, Constantina Chrysochou
wiley   +1 more source

Lead Toxicity Associated With Over‐The‐Counter Slimming Supplements: A Case Report [PDF]

Clin Case Rep
Over‐the‐counter slimming supplement: Garcinia cambogia. ABSTRACT Lead poisoning is rarely seen in clinical practice nowadays. However, the widespread promotion of dietary supplements can lead to cases of lead toxicity, presenting with symptoms such as abdominal colic, neuropsychiatric issues, and anemia.
Khanal S, Panthee S, Pathak N, Bhattarai P, Rayamajhi B, Neupane K, Aryal S.   +6 more
europepmc   +2 more sources

The Spatial Distribution Of OH And CN Radicals In The Coma Of Comet Encke [PDF]

, 2011
Multiple potential parent species have been proposed to explain CN abundances in comet comae, but the parent has not been definitively identified for all comets.
Cochran, Anita L., Dorman, Garrett R., Ihalawela, Chandrasiri A., Pierce, Donna M.   +3 more
core   +1 more source

Spatial Distribution and Color of Dust in Halley’s Inner Coma [PDF]

International Astronomical Union Colloquium, 1991
Abstract Composite images of the intensity of solar radiation scattered by dust in Halley’s coma are constructed by using the three-channel spectra obtained during the approach phase of the Vega 2 spacecraft. They cover a sector centered on the nucleus that has a radius of 40000 km and an angular extent of 50°.
J. Clairemidi, E. Brandon, P. Rousselot, G. Moreels   +3 more
openaire   +1 more source