Search Results - "Ogliore, Ryan"

Cosmic symplectite recorded irradiation by nearby massive stars in the solar system's parent molecular cloud by Vacher, Lionel G., Ogliore, Ryan C., Jones, Clive, Liu, Nan, Fike, David A.

“…The Sun’s astrophysical birth environment affected the formation and composition of the Solar System. Primitive meteorites display mass-independent oxygen…”
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A reassessment of the quasi-simultaneous arrival effect in secondary ion mass spectrometry by Ogliore, Ryan, Nagashima, Kazuhide, Huss, Gary, Haenecour, Pierre

“…Quasi-simultaneous arrival (QSA) effects in secondary ion mass spectrometry can create mass-independent inaccuracies in isotope measurements when using…”
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The Presolar Grain Database. I. Silicon Carbide by Stephan, Thomas, Trappitsch, Reto, Hoppe, Peter, Davis, Andrew M., Bose, Maitrayee, Boujibar, Asmaa, Gyngard, Frank, Hynes, K. Mairin, Liu, Nan, Nittler, Larry R., Ogliore, Ryan C.

“…Abstract The Presolar Grain Database (PGD) contains the vast majority of isotope data (published and unpublished) on presolar grains and was first released as…”
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Mineralogy and oxygen isotope systematics of magnetite grains and a magnetite‐dolomite assemblage in hydrated fine‐grained Antarctic micrometeorites by Dobrică, Elena, Ogliore, Ryan C., Engrand, Cécile, Nagashima, Kazuhide, Brearley, Adrian J.

“…We report the mineralogy and texture of magnetite grains, a magnetite‐dolomite assemblage, and the adjacent mineral phases in five hydrated fine‐grained…”
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Depth profiling and standardization from the back side of a sample for accurate analyses: Emphasis on quantifying low‐fluence, shallow implants in diamond‐like carbon by Rieck, Karen D., Jurewicz, Amy J. G., Hervig, Richard L., Williams, Peter, Olinger, Chad T., Wiens, Roger C., Ogliore, Ryan C.

“…Rationale Back‐side thinning of wafers is used to eliminate issues with transient sputtering when analyzing near‐surface element distributions. Precise and…”
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Acquisition and Online Display of High‐Resolution Backscattered Electron and X‐Ray Maps of Meteorite Sections by Ogliore, Ryan C.

“…Analyses of meteorites in thin or thick section begins with a detailed mineralogic/petrologic study of the sample. Backscattered electron and X‐ray imaging in…”
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Variations in the O-isotope composition of gas during the formation of chondrules from the CR chondrites by Schrader, Devin L., Nagashima, Kazuhide, Krot, Alexander N., Ogliore, Ryan C., Hellebrand, Eric

“…To better understand the environment of chondrule formation and constrain the O-isotope composition of the ambient gas in the Renazzo-like carbonaceous (CR)…”
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FIB‐TEM analysis of cometary material in 10 Stardust foil craters by Haas, Brendan A., Floss, Christine, Stroud, Rhonda M., Ogliore, Ryan C.

“…Aluminum foils from the Stardust cometary dust collector contain impact craters formed during the spacecraft's encounter with comet 81P/Wild 2 and retain…”
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Origins of meteoritic nanodiamonds investigated by coordinated atom‐probe tomography and transmission electron microscopy studies by Lewis, Josiah B., Floss, Christine, Isheim, Dieter, Daulton, Tyrone L., Seidman, David N., Ogliore, Ryan

“…To constrain the origins of meteoritic nanodiamonds, the abundance ratios of stable C isotopes in acid residues from the carbonaceous chondritic meteorite…”
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Gamma‐CaSO4 With Abnormally High Stability From a Hyperarid Region on Earth and From Mars by Shi, Erbin, Wang, Alian, Li, Huafang, Ogliore, Ryan, Ling, Zongcheng

“…Ordinary γ‐CaSO4 is a metastable calcium sulfate, while γ‐CaSO4 from the hyperarid region on Earth and from Mars has been found with abnormally high stability…”
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Identification of Large Isotope Anomalies in Quartz by Infrared Spectroscopy by Ogliore, Ryan C., Dwyer, Cosette, Krawczynski, Michael J., Couvy, Hélène, Eisele, Max, Filiberto, Justin

“…We report an infrared (IR) spectroscopic technique to detect quartz grains with large isotope anomalies. We synthesized isotopically doped quartz and used…”
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Q-gases in a late-forming refractory interplanetary dust particle: A link to comet Wild 2 by Ogliore, Ryan C., Palma, Russell L., Stodolna, Julien, Nagashima, Kazuhide, Pepin, Robert O., Schlutter, D.J., Gainsforth, Zack, Westphal, Andrew J., Huss, Gary R.

“…We report the structure, chemical composition, O, Al-Mg, He, and Ne isotope systematics of an interplanetary dust particle, “Manchanito”. These analyses…”
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Hydrogen fluence in Genesis collectors: Implications for acceleration of solar wind and for solar metallicity by Huss, Gary R., Koeman‐Shields, Elizabeth, Jurewicz, Amy J. G., Burnett, Donald S., Nagashima, Kazuhide, Ogliore, Ryan, Olinger, Chad T.

“…NASA's Genesis mission was flown to capture samples of the solar wind and return them to the Earth for measurement. The purpose of the mission was to determine…”
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Automatic detection of impact craters on Al foils from the Stardust interstellar dust collector using convolutional neural networks by Jaeger, Logan, Butterworth, Anna L., Gainsforth, Zack, Lettieri, Robert, Zevin, Dan, Ardizzone, Augusto, Capraro, Michael, Burchell, Mark, Wozniakiewicz, Penny, Ogliore, Ryan C., De Gregorio, Bradley T., Stroud, Rhonda M., Westphal, Andrew J., Brownlee, Donald

“…NASA's Stardust mission utilized a sample collector composed of aerogel and aluminum foil to return cometary and interstellar particles to Earth. Analysis of…”
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Oxygen isotopic composition of an enstatite ribbon of probable cometary origin by Ogliore, Ryan C., Brownlee, Donald E., Nagashima, Kazuhide, Joswiak, David J., Lewis, Josiah B., Krot, Alexander N., Utt, Kainen L., Huss, Gary R.

“…Filamentary enstatite crystals are found in interplanetary dust particles (IDPs) of likely cometary origin but are very rare or absent in meteorites…”
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Outward migration of chondrule fragments in the early Solar System: O-isotopic evidence for rocky material crossing the Jupiter Gap? by Schrader, Devin L., Nagashima, Kazuhide, Davidson, Jemma, McCoy, Timothy J., Ogliore, Ryan C., Fu, Roger R.

“…Determining the origins of chondrule precursors is key to constraining how material migrated in the early Solar System. Chondrules that were only partially…”
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Prometheus: An Io Plume Sample Return Concept by Davis, Alex B., Guethe, Christopher, Lopes, Rosaly M. C., Hofmann, Amy E., Turner, Neal, Smythe, William, Lam, Try, Karimi, Reza, Giersch, Louis, Ogliore, Ryan C.

“…Volcanic plumes on Io have been observed during every spacecraft encounter from Voyager to Juno. The material within the plume ejecta provides direct insight…”
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Modeling the Raman Spectrum of Graphitic Material in Rock Samples with Fluorescence Backgrounds: Accuracy of Fitting and Uncertainty Estimation by Gasda, Patrick J., Ogliore, Ryan C.

“…We propose a robust technique called Savitzky–Golay second-derivative (SGSD) fitting for modeling the in situ Raman spectrum of graphitic materials in rock…”
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Constraints on the formation environment of two chondrule-like igneous particles from comet 81P/Wild 2 by Gainsforth, Zack, Butterworth, Anna L., Stodolna, Julien, Westphal, Andrew J., Huss, Gary R., Nagashima, Kazu, Ogliore, Ryan, Brownlee, Donald E., Joswiak, David, Tyliszczak, Tolek, Simionovici, Alexandre S.

“…Using chemical and petrologic evidence and modeling, we deduce that two chondrule‐like particles named Iris and Callie, from Stardust cometary track…”
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Oxygen isotopic composition of coarse- and fine-grained material from comet 81P/Wild 2 by Ogliore, Ryan C., Nagashima, Kazuhide, Huss, Gary R., Westphal, Andrew J., Gainsforth, Zack, Butterworth, Anna L.

“…Individual particles from comet 81P/Wild 2 collected by NASA’s Stardust mission vary in size from small sub-μm fragments found in the walls of the aerogel…”
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