Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Nordheim, Tom"'
Autor:
Cartwright, Richard J., Villanueva, Geronimo L., Holler, Bryan J., Camarca, Maria, Faggi, Sara, Neveu, Marc, Roth, Lorenz, Raut, Ujjwal, Glein, Christopher R., Castillo-Rogez, Julie C., Malaska, Michael J., Bockelee-Morvan, Dominique, Nordheim, Tom A., Hand, Kevin P., Strazzulla, Giovanni, Pendleton, Yvonne J., de Kleer, Katherine, Beddingfield, Chloe B., de Pater, Imke, Cruikshank, Dale P., Protopapa, Silvia
We analyzed spectral cubes of Callisto's leading and trailing hemispheres, collected with the NIRSpec Integrated Field Unit (G395H) on the James Webb Space Telescope. These spatially resolved data show strong 4.25-micron absorption bands resulting fr
Externí odkaz:
http://arxiv.org/abs/2401.17236
Autor:
Romero-Wolf, Andrew, Steinbruegge, Gregor, Castillo-Rogez, Julie, Cochrane, Corey J., Nordheim, Tom A., Mitchell, Karl L., Wolfenbarger, Natalie S., Schroeder, Dustin M., Peters, Sean T.
We present a feasibility study for passive sounding of Uranian icy moons using Uranian Kilometric Radio (UKR) emissions in the 100 - 900 kHz band. We provide a summary description of the observation geometry, the UKR characteristics, and estimate the
Externí odkaz:
http://arxiv.org/abs/2305.05382
The Cassini spacecraft observed that Saturn's moon Enceladus possesses a series of jets erupting from its South Polar Terrain. Previous studies of in situ data collected by Cassini's Ion and Neutral Mass Spectrometer (INMS) have identified H$_2$O, CO
Externí odkaz:
http://arxiv.org/abs/2301.05259
Autor:
Hofgartner, Jason D., Birch, Samuel P. D., Castillo, Julie, Grundy, Will M., Hansen, Candice J., Hayes, Alexander G., Howett, Carly J. A., Hurford, Terry A., Martin, Emily S., Mitchell, Karl L., Nordheim, Tom A., Poston, Michael J., Prockter, Louise M., Quick, Lynnae C., Schenk, Paul, Schindhelm, Rebecca N., Umurhan, Orkan M.
At least two active plumes were observed on Neptune's moon Triton during the Voyager 2 flyby in 1989. Models for Triton's plumes have previously been grouped into five hypotheses, two of which are primarily atmospheric phenomena and are generally con
Externí odkaz:
http://arxiv.org/abs/2112.04627
Autor:
Cartwright, Richard J., Nordheim, Tom A., DeColibus, David, Grundy, William M., Holler, Bryan J., Beddingfield, Chloe B., Sori, Michael M., Lucas, Michael P., Elder, Catherine M., Regoli, Leonardo H., Cruikshank, Dale P., Emery, Joshua P., Leonard, Erin J., Cochrane, Corey J.
CO2 ice is present on the trailing hemisphere of Ariel but is mostly absent from its leading hemisphere. The leading/trailing hemispherical asymmetry in the distribution of CO2 ice is consistent with radiolytic production of CO2, formed by charged pa
Externí odkaz:
http://arxiv.org/abs/2111.14223
Autor:
Cartwright, Richard J., Beddingfield, Chloe B., Nordheim, Tom A., Elder, Catherine M., Castillo-Rogez, Julie C., Neveu, Marc, Bramson, Ali M., Sori, Michael M., Buratti, Bonnie J., Pappalardo, Robert T., Roser, Joseph E., Cohen, Ian J., Leonard, Erin J., Ermakov, Anton I., Showalter, Mark R., Grundy, William M., Turtle, Elizabeth P., Hofstadter, Mark D.
The 27 satellites of Uranus are enigmatic, with dark surfaces coated by material that could be rich in organics. Voyager 2 imaged the southern hemispheres of Uranus' five largest 'classical' moons Miranda, Ariel, Umbriel, Titania, and Oberon, as well
Externí odkaz:
http://arxiv.org/abs/2105.01164
Autor:
Cartwright, Richard J., Nordheim, Tom A., Cruikshank, Dale P., Hand, Kevin P., Roser, Joseph E., Grundy, William M., Beddingfield, Chloe B., Emery, Joshua P.
We investigated whether sulfur-bearing species are present on the icy Galilean moon Callisto by analyzing eight near-infrared reflectance spectra collected over a wide range of sub-observer longitudes. We measured the band areas and depths of a 4-mic
Externí odkaz:
http://arxiv.org/abs/2010.01395
Autor:
Cartwright, Richard J., Beddingfield, Chloe B., Nordheim, Tom, Elder, Catherine, Grundy, Will, Bramson, Ali, Sori, Michael, Pappalardo, Robert, Neveu, Marc, Burr, Devon, Ermakov, Anton, Roser, Joe, Castillo-Rogez, Julie, Showalter, Mark, Cohen, Ian, Turtle, Zibi, Hofstadter, Mark
The five classical Uranian moons are possible ocean worlds that exhibit bizarre geologic landforms, hinting at recent surface-interior communication. However, Uranus' classical moons, as well as its ring moons and irregular satellites, remain poorly
Externí odkaz:
http://arxiv.org/abs/2007.07284
Autor:
Cartwright, Richard J., Beddingfield, Chloe B., Nordheim, Tom A., Roser, Joe, Grundy, William M., Hand, Kevin P., Emery, Joshua P., Cruikshank, Dale P., Scipioni, Francesca
We investigated whether ammonia-rich constituents are present on the surface of the Uranian moon Ariel by analyzing 32 near-infrared reflectance spectra collected over a wide range of sub-observer longitudes and latitudes. We measured the band areas
Externí odkaz:
http://arxiv.org/abs/2007.02826
We use data from Cassini's Composite Infrared Spectrometer CIRS to map Mimas' surface temperatures and its thermophysical properties. This provides a dramatic improvement on the work in Howett et al. (2011), where the values were determined at only t
Externí odkaz:
http://arxiv.org/abs/2003.08451