Zobrazeno 1 - 10
of 494
pro vyhledávání: '"Protopapa, P."'
Autor:
Hasler, Samantha N., Mayorga, L. C., Grundy, William M., Simon, Amy A., Benecchi, Susan D., Howett, Carly J. A., Protopapa, Silvia, Hammel, Heidi B., Wenkert, Daniel D., Stern, S. Alan, Singer, Kelsi N., Porter, Simon B., Brandt, Pontus C., Parker, Joel W., Verbiscer, Anne J., Spencer, John R., Team, the New Horizons Planetary Science Theme
We present flux measurements of Uranus observed at phase angles of 43.9{\deg}, 44.0{\deg}, and 52.4{\deg} by the Multispectral Visible Imaging Camera (MVIC) on the New Horizons spacecraft during 2023, 2010, and 2019, respectively. New Horizons imaged
Externí odkaz:
http://arxiv.org/abs/2411.04167
Autor:
Kiss, Csaba, Müller, Thomas G., Farkas-Takács, Anikó, Moór, Attila, Protopapa, Silvia, Parker, Alex H., Santos-Sanz, Pablo, Ortiz, Jose Luis, Holler, Bryan J., Wong, Ian, Stansberry, John, Fernández-Valenzuela, Estela, Glein, Christopher R., Lellouch, Emmanuel, Vilenius, Esa, Kalup, Csilla E., Regály, Zsolt, Szakáts, Róbert, Marton, Gábor, Pál, András, Szabó, Gyula M.
We report on the discovery of a very prominent mid-infrared (18-25 {\mu}m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the MIRI instrument of the James Webb Space Telescope, along with previous m
Externí odkaz:
http://arxiv.org/abs/2410.22544
Autor:
Pinilla-Alonso, N., Licandro, J., Brunetto, R., Henault, E., Schambeau, C., Guilbert-Lepoutre, A., Stansberry, J., Wong, I., Lunine, J. I., Holler, B. J., Emery, J., Protopapa, S., Cook, J., Hammel, H. B., Villanueva, G. L., Milam, S. N., Cruikshank, D., de Souza-Feliciano, A. C.
(2060) Chiron is a large centaur that has been reported active on multiple occasions including during aphelion passage. Studies of Chirons coma during active periods have resulted in the detection of C(triple)N and CO outgassing. Significant work rem
Externí odkaz:
http://arxiv.org/abs/2407.07761
The giant Chinguetti meteorite that Gaston Ripert reported seeing in 1916 has never been found. A radionuclide analysis by Welten et al (2001) of the 4.5kg mesosiderite that Ripert recovered, supposedly sitting on the larger object, has convinced man
Externí odkaz:
http://arxiv.org/abs/2402.14150
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:
Emery, J. P., Wong, I., Brunetto, R., Cook, J. C., Pinilla-Alonso, N., Stansberry, J. A., Holler, B. J., Grundy, W. M., Protopapa, S., Souza-Feliciano, A. C., Fernández-Valenzuela, E., Lunine, J. I., Hines, D. C.
We observed Sedna, Gonggong, and Quaoar with the NIRSpec instrument on the James Webb Space Telescope (JWST). All three bodies were observed in the low-resolution prism mode at wavelengths spanning 0.7 to 5.2 $\mu$m. Quaoar was also observed at 10x h
Externí odkaz:
http://arxiv.org/abs/2309.15230
Autor:
Glein, Christopher R., Grundy, William M., Lunine, Jonathan I., Wong, Ian, Protopapa, Silvia, Pinilla-Alonso, Noemi, Stansberry, John A., Holler, Bryan J., Cook, Jason C., Souza-Feliciano, Ana Carolina
Dwarf planets Eris and Makemake have surfaces bearing methane ice of unknown origin. D/H ratios were recently determined from James Webb Space Telescope (JWST) observations of Eris and Makemake, giving us new clues to decipher the origin of methane.
Externí odkaz:
http://arxiv.org/abs/2309.05549
Autor:
Grundy, W. M., Wong, I., Glein, C. R., Protopapa, S., Holler, B. J., Cook, J. C., Stansberry, J. A., Parker, A. H., Lunine, J. I., Pinilla-Alonso, N., Feliciano, A. C. de Souza, Brunetto, R., Emery, J. P., Licandro, J.
James Webb Space Telescope's NIRSpec infrared imaging spectrometer observed the outer solar system dwarf planets Eris and Makemake in reflected sunlight at wavelengths spanning 1 through 5 microns. Both objects have high albedo surfaces that are rich
Externí odkaz:
http://arxiv.org/abs/2309.05085
Autor:
Silvia Protopapa, Ujjwal Raut, Ian Wong, John Stansberry, Geronimo L. Villanueva, Jason Cook, Bryan Holler, William M. Grundy, Rosario Brunetto, Richard J. Cartwright, Bereket Mamo, Joshua P. Emery, Alex H. Parker, Aurelie Guilbert-Lepoutre, Noemi Pinilla-Alonso, Stefanie N. Milam, Heidi B. Hammel
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract Charon, Pluto’s largest moon, has been extensively studied, with research focusing on its primitive composition and changes due to radiation and photolysis. However, spectral data have so far been limited to wavelengths below 2.5 μm, leav
Externí odkaz:
https://doaj.org/article/f61206c6fe4b4228bf14fc9c2cf2445a
Autor:
Villanueva, G. L., Hammel, H. B., Milam, S. N., Kofman, V., Faggi, S., Glein, C. R., Cartwright, R., Roth, L., Hand, K. P., Paganini, L., Spencer, J., Stansberry, J., Holler, B., Rowe-Gurney, N., Protopapa, S., Strazzulla, G., Liuzzi, G., Cruz-Mermy, G., Moutamid, M. El, Hedman, M., Denny, K.
Enceladus is a prime target in the search for life in our solar system, having an active plume likely connected to a large liquid water subsurface ocean. Using the sensitive NIRSpec instrument onboard JWST, we searched for organic compounds and chara
Externí odkaz:
http://arxiv.org/abs/2305.18678