Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Keeney, Brian"'
Autor:
Stern, S. Alan, Keeney, Brian, Hoover, Rachael, Protopapa, Silvia, White, Oliver, Grundy, Will, Cruikshank, Dale P., Team, the New Horizons
Sputnik Planitia, Pluto's gigantic ice glacier, hosts numerous scientific mysteries, including the presence of thousands of elongated pit structures. We examine various attributes of these pit structures in New Horizons data sets, revealing their len
Externí odkaz:
http://arxiv.org/abs/2109.01025
Autor:
Keeney, Brian A., Parker, Joel Wm., Cunningham, Nathaniel, Stern, S. Alan, Verbiscer, Anne J., Team, the New Horizons
Publikováno v:
Planetary Science Journal, 2021, Volume 2, Article 164
We present the first measurements of Charon's far-ultraviolet surface reflectance, obtained by the Alice spectrograph on New Horizons. We find no measurable flux shortward of 1650 A, and Charon's geometric albedo is $<0.019$ ($3\sigma$) at 1600 A. Fr
Externí odkaz:
http://arxiv.org/abs/2107.14068
Autor:
Noonan, John W., Rinaldi, Giovanna, Feldman, Paul D., Stern, S. Alan, Parker, Joel Wm., Keeney, Brian A., Bockelée-Morvan, Dominique, Vervack Jr., Ronald J., Steffl, Andrew J., Knight, Matthew M., Schindhelm, Rebecca N., Feaga, Lori M., Pineau, Jon, Medina, Richard, Weaver, Harold A., Bertaux, Jean-Loup, A'Hearn, Michael F.
Publikováno v:
The Astronomical Journal, Volume 162, Number 1, 4, 2021
Cometary outbursts offer a valuable window into the composition of comet nuclei with their forceful ejection of dust and volatiles in explosive events, revealing the interior components of the comet. Understanding how different types of outbursts inf
Externí odkaz:
http://arxiv.org/abs/2106.04736
Autor:
Noonan, John W., Bockelée-Morvan, Dominique, Feldman, Paul D., Stern, S. Alan, Keeney, Brian A., Parker, Joel Wm., Biver, Nicolas, Knight, Matthew M., Feaga, Lori M., Hofstadter, Mark D., Lee, Seungwon, Vervack Jr., Ronald J., Steffl, Andrew J., Schindhelm, Rebecca N., Pineau, Jon, Medina, Richard, Weaver, Harold A., Bertaux, Jean-Loup, A'Hearn, Michael F.
Publikováno v:
The Astronomical Journal, Volume 162, Number 1, 5, 2021
The Alice ultraviolet spectrograph on board the \textit{Rosetta} orbiter provided the first near-nucleus ultraviolet observations of a cometary coma from arrival at comet 67P/Churyumov-Gerasimenko in 2014 August through 2016 September. The characteri
Externí odkaz:
http://arxiv.org/abs/2106.04737
Autor:
Stern, S. Alan, Keeney, Brian, Singer, Kelsi, White, Oliver, Hofgartner, Jason D., Grundy, Will, Team, The New Horizons
One of the most striking and curious features of the small Kuiper Belt Object (KB), Arrokoth, explored by New Horizons, is the bright, annular neck it exhibits at the junction between its two lobes. Here we summarize past reported findings regarding
Externí odkaz:
http://arxiv.org/abs/2103.10780
Autor:
Buie, Marc W., Porter, Simon B., Tamblyn, Peter, Terrell, Dirk, Parker, Alex Harrison, Baratoux, David, Kaire, Maram, Leiva, Rodrigo, Verbiscer, Anne J., Zangari, Amanda M., Colas, François, Diop, Baïdy Demba, Samaniego, Joseph I., Wasserman, Lawrence H., Benecchi, Susan D., Caspi, Amir, Gwyn, Stephen, Kavelaars, J. J., Uría, Adriana C. Ocampo, Rabassa, Jorge, Skrutskie, M. F., Soto, Alejandro, Tanga, Paolo, Young, Eliot F., Stern, S. Alan, Andersen, Bridget C., Pérez, Mauricio E. Arango, Arredondo, Anicia, Artola, Rodolfo Alfredo, Bâ, Abdoulaye, Ballet, Romuald, Blank, Ted, Bop, Cheikh Tidiane, Bosh, Amanda S., López, Matías Aarón Camino, Carter, Christian M., Castro-Chacón, J. H., Desprez, Alfonso Caycedo, Guerra, Nicolás Caycedo, Conard, Steven J., Dauvergne, Jean-Luc, Dean, Bryan, Dean, Michelle, Desmars, Josselin, Dieng, Abdou Lahat, Dieng, Mame Diarra Bousso, Diouf, Omar, Dorego, Gualbert Séraphin, Dunham, David W., Dunham, Joan, Luca, Hugo A. Durantini, Edwards, Patrick, Erasmus, Nicolas, Faye, Gayane, Faye, Mactar, Ferrario, Lucas Ezequiel, Ferrell, Chelsea L., Finley, Tiffany J., Fraser, Wesley C., Friedli, Alison J., Serna, Julián Galvez, Garcia-Migani, Esteban A., Genade, Anja, Getrost, Kai, Gil-Hutton, Ricardo A., Gimeno, German N., Golub, Eli Joseph, Murillo, Giovanni Francisco González, Grusin, Michael D., Gurovich, Sebastian, Hanna, William H., Henn, Santiago M., Hinton, P. C., Hughes, Paul J., Josephs Jr, John David, Joya, Raul, Kammer, Joshua A., Keeney, Brian A., Keller, John M., Kramer, Emily A., Levine, Stephen E., Lisse, Carey M., Lovell, Amy J., Mackie, Jason A., Makarchuk, Stanislav, Manzano, Luis E., Mbaye, Salma Sylla, Mbaye, Modou, Melia, Raul Roberto, Moreno, Freddy, Moss, Sean K., Ndaiye, Diene, Ndiaye, Mapathe, Nelson, Matthew J., Olkin, Catherine B., Olsen, Aart M., Moreno, Victor Jonathan Ospina, Pasachoff, Jay M., Pereyra, Mariana Belen, Person, Michael J., Pinzón, Giovanni, Pulver, Eduardo Alejandro, Quintero, Edwin A., Regester, Jeffrey R., Resnick, Aaron Caleb, Reyes-Ruiz, Mauricio, Rolfsmeier, Alex D., Ruhland, Trina R., Salmon, Julien, Santos-Sanz, Pablo, Santucho, Marcos Ariel, Niño, Diana Karina Sepúlveda, Sickafoose, Amanda A., Silva, José S., Singer, Kelsi N., Skipper, Joy N., Slivan, Stephen M., Smith, Rose J. C., Spagnotto, Julio C., Stephens, Andrew W., Strabala, Samuel D., Tamayo, Francisco J., Throop, Henry B., Cañas, Andrés David Torres, Toure, Labaly, Traore, Alassane, Tsang, Constantine C. C., Turner, Jake D., Vanegas, Santiago, Venable, Roger, Wilson, John C., Zuluaga, Carlos A., Zuluaga, Jorge I.
Publikováno v:
The Astronomical Journal, Vol. 159, Issue 4, 130 (27pp); 2020 April
We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detections of the body, and all constrained the presence of rings and other d
Externí odkaz:
http://arxiv.org/abs/2001.00125
Autor:
Stocke, John T., Keeney, Brian A., Danforth, Charles W., Oppenheimer, Benjamin D., Pratt, Cameron T., Berlind, Andreas A., Impey, Chris, Jannuzi, Buell
Publikováno v:
2019, ApJS, 240, 15
A small survey of the UV-absorbing gas in 12 low-$z$ galaxy groups has been conducted using the Cosmic Origins Spectrograph (COS) on-board the Hubble Space Telescope (HST). Targets were selected from a large, homogeneously-selected sample of groups f
Externí odkaz:
http://arxiv.org/abs/1811.12374
Autor:
Noonan, John W., Stern, S. Alan, Feldman, Paul D., Broiles, Thomas, Wedlund, Cyril Simon, Edberg, Niklas J. T., Schindhelm, R., Parker, Joel Wm., Keeney, Brian A., Vervack Jr, Ronald J., Steffl, Andrew J., Knight, Matthew M., Weaver, Harold A., Feaga, Lori M., A'Hearn, Michael, Bertaux, Jean-Loup
Publikováno v:
Noonan et al. 2018, Astronomical Journal, Volume 156, Number 1
The Alice ultraviolet spectrograph on the European Space Agency Rosetta spacecraft observed comet 67P/Churyumov-Gerasimenko in its orbit around the Sun for just over two years. Alice observations taken in 2015 October, two months after perihelion, sh
Externí odkaz:
http://arxiv.org/abs/1806.06948
Autor:
Keeney, Brian A., Stocke, John T., Pratt, Cameron T., Davis, Julie D., Syphers, David, Danforth, Charles W., Shull, J. Michael, Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
Publikováno v:
2018, ApJS, 237, 11
To establish the connection between galaxies and UV-detected absorption systems in the local universe, a deep ($g\leq20$) and wide ($\sim20^{\prime}$ radius) galaxy redshift survey is presented around 47 sight lines to UV-bright AGN observed by the C
Externí odkaz:
http://arxiv.org/abs/1805.08767
Autor:
Feldman, Paul D., A'Hearn, Michael F., Bertaux, Jean-Loup, Feaga, Lori M., Keeney, Brian A., Knight, Matthew M., Noonan, John, Parker, Joel Wm., Schindhelm, Rebecca, Steffl, Andrew J., Stern, S. Alan, Vervack, Ronald J., Weaver, Harold A.
Publikováno v:
Astronomical Journal 155:9, 2018
The Alice far-ultraviolet imaging spectrograph onboard Rosetta observed emissions from atomic and molecular species from within the coma of comet 67P/Churyumov-Gerasimenko during the entire escort phase of the mission from 2014 August to 2016 Septemb
Externí odkaz:
http://arxiv.org/abs/1711.07380