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1,296 results on '"Greene, Thomas"'

152. Transiting Exoplanet Studies and Community Targets for JWST ʼs Early Release Science Program

Author

Stevenson, Kevin B., Lewis, Nikole K., Bean, Jacob L., Beichman, Charles, Fraine, Jonathan, Kilpatrick, Brian M., Krick, J. E., Lothringer, Joshua D., Mandell, Avi M., Valenti, Jeff A., Agol, Eric, Angerhausen, Daniel, Barstow, Joanna K., Birkmann, Stephan M., Burrows, Adam, Charbonneau, David, Cowan, Nicolas B., Crouzet, Nicolas, Cubillos, Patricio E., Curry, S. M., Dalba, Paul A., de Wit, Julien, Deming, Drake, Désert, Jean-Michel, Doyon, René, Dragomir, Diana, Ehrenreich, David, Fortney, Jonathan J., Muñoz, Antonio García, Gibson, Neale P., Gizis, John E., Greene, Thomas P., Harrington, Joseph, Heng, Kevin, Kataria, Tiffany, Kempton, Eliza M.-R., Knutson, Heather, Kreidberg, Laura, Lafrenière, David, Lagage, Pierre-Olivier, Line, Michael R., Lopez-Morales, Mercedes, Madhusudhan, Nikku, Morley, Caroline V., Rocchetto, Marco, Schlawin, Everett, Shkolnik, Evgenya L., Shporer, Avi, Sing, David K., Todorov, Kamen O., Tucker, Gregory S., and Wakeford, Hannah R.

Published
2016

153. Von Kopf bis Fuß

Author

Andrew Stellman, Jennifer Greene, Thomas Demmig

Published
2018

154. A roadmap to the efficient and robust characterization of temperate terrestrial planet atmospheres with JWST

Author

Initiative, TRAPPIST-1 JWST Community, de Wit, Julien, Doyon, René, Rackham, Benjamin V., Lim, Olivia, Ducrot, Elsa, Kreidberg, Laura, Benneke, Björn, Ribas, Ignasi, Berardo, David, Niraula, Prajwal, Iyer, Aishwarya, Shapiro, Alexander, Kostogryz, Nadiia, Witzke, Veronika, Gillon, Michaël, Agol, Eric, Meadows, Victoria, Burgasser, Adam J., Owen, James E., Fortney, Jonathan J., Selsis, Franck, Bello-Arufe, Aaron, Bolmont, Emeline, Cowan, Nicolas, Dong, Chuanfei, Drake, Jeremy J., Garcia, Lionel, Greene, Thomas, Haworth, Thomas, Hu, Renyu, Kane, Stephen R., Kervella, Pierre, Koll, Daniel, Krissansen-Totton, Joshua, Lagage, Pierre-Olivier, Lichtenberg, Tim, Lustig-Yaeger, Jacob, Lingam, Manasvi, Turbet, Martin, Seager, Sara, Barkaoui, Khalid, Bell, Taylor J., Burdanov, Artem, Cadieux, Charles, Charnay, Benjamin, Cloutier, Ryan, Cook, Neil J., Correia, Alexandre C. M., Dang, Lisa, Daylan, Tansu, Delrez, Laetitia, Edwards, Billy, Fauchez, Thomas J., Flagg, Laura, Fraschetti, Federico, Haqq-Misra, Jacob, Huang, Ziyu, Iro, Nicolas, Jayawardhana, Ray, Jehin, Emmanuel, Jin, Meng, Kite, Edwin, Kitzmann, Daniel, Kral, Quentin, Lafrenière, David, Libert, Anne-Sophie, Liu, Beibei, Mohanty, Subhanjoy, Morris, Brett M., Murray, Catriona A., Piaulet, Caroline, Pozuelos, Francisco J., Radica, Michael, Ranjan, Sukrit, Rathcke, Alexander, Roy, Pierre-Alexis, Schwieterman, Edward W., Turner, Jake D., Triaud, Amaury, Way, Michael J., Initiative, TRAPPIST-1 JWST Community, de Wit, Julien, Doyon, René, Rackham, Benjamin V., Lim, Olivia, Ducrot, Elsa, Kreidberg, Laura, Benneke, Björn, Ribas, Ignasi, Berardo, David, Niraula, Prajwal, Iyer, Aishwarya, Shapiro, Alexander, Kostogryz, Nadiia, Witzke, Veronika, Gillon, Michaël, Agol, Eric, Meadows, Victoria, Burgasser, Adam J., Owen, James E., Fortney, Jonathan J., Selsis, Franck, Bello-Arufe, Aaron, Bolmont, Emeline, Cowan, Nicolas, Dong, Chuanfei, Drake, Jeremy J., Garcia, Lionel, Greene, Thomas, Haworth, Thomas, Hu, Renyu, Kane, Stephen R., Kervella, Pierre, Koll, Daniel, Krissansen-Totton, Joshua, Lagage, Pierre-Olivier, Lichtenberg, Tim, Lustig-Yaeger, Jacob, Lingam, Manasvi, Turbet, Martin, Seager, Sara, Barkaoui, Khalid, Bell, Taylor J., Burdanov, Artem, Cadieux, Charles, Charnay, Benjamin, Cloutier, Ryan, Cook, Neil J., Correia, Alexandre C. M., Dang, Lisa, Daylan, Tansu, Delrez, Laetitia, Edwards, Billy, Fauchez, Thomas J., Flagg, Laura, Fraschetti, Federico, Haqq-Misra, Jacob, Huang, Ziyu, Iro, Nicolas, Jayawardhana, Ray, Jehin, Emmanuel, Jin, Meng, Kite, Edwin, Kitzmann, Daniel, Kral, Quentin, Lafrenière, David, Libert, Anne-Sophie, Liu, Beibei, Mohanty, Subhanjoy, Morris, Brett M., Murray, Catriona A., Piaulet, Caroline, Pozuelos, Francisco J., Radica, Michael, Ranjan, Sukrit, Rathcke, Alexander, Roy, Pierre-Alexis, Schwieterman, Edward W., Turner, Jake D., Triaud, Amaury, and Way, Michael J.

Abstract

Ultra-cool dwarf stars are abundant, long-lived, and uniquely suited to enable the atmospheric study of transiting terrestrial companions with JWST. Amongst them, the most prominent is the M8.5V star TRAPPIST-1 and its seven planets, which have been the favored targets of eight JWST Cycle 1 programs. While Cycle 1 observations have started to yield preliminary insights into the planets, they have also revealed that their atmospheric exploration requires a better understanding of their host star. Here, we propose a roadmap to characterize the TRAPPIST-1 system -- and others like it -- in an efficient and robust manner. We notably recommend that -- although more challenging to schedule -- multi-transit windows be prioritized to constrain stellar heterogeneities and gather up to 2$\times$ more transits per JWST hour spent. We conclude that in such systems planets cannot be studied in isolation by small programs, thus large-scale community-supported programs should be supported to enable the efficient and robust exploration of terrestrial exoplanets in the JWST era.

Published
2023

155. The dynamic universe: realizing the potential of classical time domain and multimessenger astrophysics.

Author

Howell, Steve B., Howell, D. Andrew, Street, R. A., Soares-Furtado, Melinda, Jackson, Brian, Greene, Thomas P., Racusin, Judith, and Perlman, Eric

Subjects
ASTROPHYSICS, PLANETARY science, SOLAR system, UNIVERSE, SPACE telescopes, CITIZEN science
Abstract

In parallel with the multi-messenger revolution, major advances in time-domain astronomy across multiple science disciplines relevant to astrophysics are becoming more urgent to address. Aside from electromagnetic observations of gravitational wave events and explosive counterparts, there are a number of "classical" astrophysical areas that require new thinking for proper exploration in the time domain. How NASA, NSF, ESA, and ESO consider the 2020 USA Decadal Survey within the astronomy community, as well as the worldwide call to support and expand time domain and multi-messenger astrophysics, it is crucial that all areas of astrophysics, including stellar, galactic, Solar System, and exoplanetary science participate in the discussion, and that it not be made into an exclusive preserve of cosmological, high-energy, explosive and transient science. Time domain astronomy is used to explore many aspects of astrophysics-particularly concerning ground- and space-based mission science goals of exploring how the Universe works, understanding how did we get here, and are we alone. Time domain studies are already built into the core operations of many currently operating and future space telescopes (e.g., Roman, PLATO) as well as current and planned large areal ground-based surveys (e.g., Rubin). Time-domain observations designed for one scientific purpose, also lead to great discoveries in many other science areas. The recent advent of user-friendly hardware, software, observational approaches, and online data infrastructure has also helped make time domain observations especially suitable and appealing for citizen science projects. We provide a review of the current state of TDAMM alerts and observational protocols, revealing a wide array of software and applications, much of which is incompatible. Any conversation regarding TDAMM astrophysics should include all aspects of the field, including those aspects seen as classical applications. [ABSTRACT FROM AUTHOR]

Published
2024
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156. The Science Performance of JWST as Characterized in Commissioning

Author

Rigby, Jane, primary, Perrin, Marshall, additional, McElwain, Michael, additional, Kimble, Randy, additional, Friedman, Scott, additional, Lallo, Matt, additional, Doyon, René, additional, Feinberg, Lee, additional, Ferruit, Pierre, additional, Glasse, Alistair, additional, Rieke, Marcia, additional, Rieke, George, additional, Wright, Gillian, additional, Willott, Chris, additional, Colon, Knicole, additional, Milam, Stefanie, additional, Neff, Susan, additional, Stark, Christopher, additional, Valenti, Jeff, additional, Abell, Jim, additional, Abney, Faith, additional, Abul-Huda, Yasin, additional, Scott Acton, D., additional, Adams, Evan, additional, Adler, David, additional, Aguilar, Jonathan, additional, Ahmed, Nasif, additional, Albert, Loïc, additional, Alberts, Stacey, additional, Aldridge, David, additional, Allen, Marsha, additional, Altenburg, Martin, additional, Álvarez-Márquez, Javier, additional, Alves de Oliveira, Catarina, additional, Andersen, Greg, additional, Anderson, Harry, additional, Anderson, Sara, additional, Argyriou, Ioannis, additional, Armstrong, Amber, additional, Arribas, Santiago, additional, Artigau, Etienne, additional, Arvai, Amanda, additional, Atkinson, Charles, additional, Bacon, Gregory, additional, Bair, Thomas, additional, Banks, Kimberly, additional, Barrientes, Jaclyn, additional, Barringer, Bruce, additional, Bartosik, Peter, additional, Bast, William, additional, Baudoz, Pierre, additional, Beatty, Thomas, additional, Bechtold, Katie, additional, Beck, Tracy, additional, Bergeron, Eddie, additional, Bergkoetter, Matthew, additional, Bhatawdekar, Rachana, additional, Birkmann, Stephan, additional, Blazek, Ronald, additional, Blome, Claire, additional, Boccaletti, Anthony, additional, Böker, Torsten, additional, Boia, John, additional, Bonaventura, Nina, additional, Bond, Nicholas, additional, Bosley, Kari, additional, Boucarut, Ray, additional, Bourque, Matthew, additional, Bouwman, Jeroen, additional, Bower, Gary, additional, Bowers, Charles, additional, Boyer, Martha, additional, Bradley, Larry, additional, Brady, Greg, additional, Braun, Hannah, additional, Breda, David, additional, Bresnahan, Pamela, additional, Bright, Stacey, additional, Britt, Christopher, additional, Bromenschenkel, Asa, additional, Brooks, Brian, additional, Brooks, Keira, additional, Brown, Bob, additional, Brown, Matthew, additional, Brown, Patricia, additional, Bunker, Andy, additional, Burger, Matthew, additional, Bushouse, Howard, additional, Cale, Steven, additional, Cameron, Alex, additional, Cameron, Peter, additional, Canipe, Alicia, additional, Caplinger, James, additional, Caputo, Francis, additional, Cara, Mihai, additional, Carey, Larkin, additional, Carniani, Stefano, additional, Carrasquilla, Maria, additional, Carruthers, Margaret, additional, Case, Michael, additional, Catherine, Riggs, additional, Chance, Don, additional, Chapman, George, additional, Charlot, Stéphane, additional, Charlow, Brian, additional, Chayer, Pierre, additional, Chen, Bin, additional, Cherinka, Brian, additional, Chichester, Sarah, additional, Chilton, Zack, additional, Chonis, Taylor, additional, Clampin, Mark, additional, Clark, Charles, additional, Clark, Kerry, additional, Coe, Dan, additional, Coleman, Benee, additional, Comber, Brian, additional, Comeau, Tom, additional, Connolly, Dennis, additional, Cooper, James, additional, Cooper, Rachel, additional, Coppock, Eric, additional, Correnti, Matteo, additional, Cossou, Christophe, additional, Coulais, Alain, additional, Coyle, Laura, additional, Cracraft, Misty, additional, Curti, Mirko, additional, Cuturic, Steven, additional, Davis, Katherine, additional, Davis, Michael, additional, Dean, Bruce, additional, DeLisa, Amy, additional, deMeester, Wim, additional, Dencheva, Nadia, additional, Dencheva, Nadezhda, additional, DePasquale, Joseph, additional, Deschenes, Jeremy, additional, Hunor Detre, Örs, additional, Diaz, Rosa, additional, Dicken, Dan, additional, DiFelice, Audrey, additional, Dillman, Matthew, additional, Dixon, William, additional, Doggett, Jesse, additional, Donaldson, Tom, additional, Douglas, Rob, additional, DuPrie, Kimberly, additional, Dupuis, Jean, additional, Durning, John, additional, Easmin, Nilufar, additional, Eck, Weston, additional, Edeani, Chinwe, additional, Egami, Eiichi, additional, Ehrenwinkler, Ralf, additional, Eisenhamer, Jonathan, additional, Eisenhower, Michael, additional, Elie, Michelle, additional, Elliott, James, additional, Elliott, Kyle, additional, Ellis, Tracy, additional, Engesser, Michael, additional, Espinoza, Nestor, additional, Etienne, Odessa, additional, Etxaluze, Mireya, additional, Falini, Patrick, additional, Feeney, Matthew, additional, Ferry, Malcolm, additional, Filippazzo, Joseph, additional, Fincham, Brian, additional, Fix, Mees, additional, Flagey, Nicolas, additional, Florian, Michael, additional, Flynn, Jim, additional, Fontanella, Erin, additional, Ford, Terrance, additional, Forshay, Peter, additional, Fox, Ori, additional, Franz, David, additional, Fu, Henry, additional, Fullerton, Alexander, additional, Galkin, Sergey, additional, Galyer, Anthony, additional, García Marín, Macarena, additional, Gardner, Jonathan P., additional, Gardner, Lisa, additional, Garland, Dennis, additional, Garrett, Bruce, additional, Gasman, Danny, additional, Gaspar, Andras, additional, Gaudreau, Daniel, additional, Gauthier, Peter, additional, Geers, Vincent, additional, Geithner, Paul, additional, Gennaro, Mario, additional, Giardino, Giovanna, additional, Girard, Julien, additional, Giuliano, Mark, additional, Glassmire, Kirk, additional, Glauser, Adrian, additional, Glazer, Stuart, additional, Godfrey, John, additional, Golimowski, David, additional, Gollnitz, David, additional, Gong, Fan, additional, Gonzaga, Shireen, additional, Gordon, Michael, additional, Gordon, Karl, additional, Goudfrooij, Paul, additional, Greene, Thomas, additional, Greenhouse, Matthew, additional, Grimaldi, Stefano, additional, Groebner, Andrew, additional, Grundy, Timothy, additional, Guillard, Pierre, additional, Gutman, Irvin, additional, Ha, Kong Q., additional, Haderlein, Peter, additional, Hagedorn, Andria, additional, Hainline, Kevin, additional, Haley, Craig, additional, Hami, Maryam, additional, Hamilton, Forrest, additional, Hammel, Heidi, additional, Hansen, Carl, additional, Harkins, Tom, additional, Harr, Michael, additional, Hart, Jessica, additional, Hart, Quyen, additional, Hartig, George, additional, Hashimoto, Ryan, additional, Haskins, Sujee, additional, Hathaway, William, additional, Havey, Keith, additional, Hayden, Brian, additional, Hecht, Karen, additional, Heller-Boyer, Chris, additional, Henriques, Caroline, additional, Henry, Alaina, additional, Hermann, Karl, additional, Hernandez, Scarlin, additional, Hesman, Brigette, additional, Hicks, Brian, additional, Hilbert, Bryan, additional, Hines, Dean, additional, Hoffman, Melissa, additional, Holfeltz, Sherie, additional, Holler, Bryan J., additional, Hoppa, Jennifer, additional, Hott, Kyle, additional, Howard, Joseph M., additional, Howard, Rick, additional, Hunter, Alexander, additional, Hunter, David, additional, Hurst, Brendan, additional, Husemann, Bernd, additional, Hustak, Leah, additional, Ilinca Ignat, Luminita, additional, Illingworth, Garth, additional, Irish, Sandra, additional, Jackson, Wallace, additional, Jahromi, Amir, additional, Jakobsen, Peter, additional, James, LeAndrea, additional, James, Bryan, additional, Januszewski, William, additional, Jenkins, Ann, additional, Jirdeh, Hussein, additional, Johnson, Phillip, additional, Johnson, Timothy, additional, Jones, Vicki, additional, Jones, Ron, additional, Jones, Danny, additional, Jones, Olivia, additional, Jordan, Ian, additional, Jordan, Margaret, additional, Jurczyk, Sarah, additional, Jurling, Alden, additional, Kaleida, Catherine, additional, Kalmanson, Phillip, additional, Kammerer, Jens, additional, Kang, Huijo, additional, Kao, Shaw-Hong, additional, Karakla, Diane, additional, Kavanagh, Patrick, additional, Kelly, Doug, additional, Kendrew, Sarah, additional, Kennedy, Herbert, additional, Kenny, Deborah, additional, Keski-kuha, Ritva, additional, Keyes, Charles, additional, Kidwell, Richard, additional, Kinzel, Wayne, additional, Kirk, Jeff, additional, Kirkpatrick, Mark, additional, Kirshenblat, Danielle, additional, Klaassen, Pamela, additional, Knapp, Bryan, additional, Scott Knight, J., additional, Knollenberg, Perry, additional, Koehler, Robert, additional, Koekemoer, Anton, additional, Kovacs, Aiden, additional, Kulp, Trey, additional, Kumari, Nimisha, additional, Kyprianou, Mark, additional, La Massa, Stephanie, additional, Labador, Aurora, additional, Labiano, Alvaro, additional, Lagage, Pierre-Olivier, additional, Lajoie, Charles-Philippe, additional, Lallo, Matthew, additional, Lam, May, additional, Lamb, Tracy, additional, Lambros, Scott, additional, Lampenfield, Richard, additional, Langston, James, additional, Larson, Kirsten, additional, Law, David, additional, Lawrence, Jon, additional, Lee, David, additional, Leisenring, Jarron, additional, Lepo, Kelly, additional, Leveille, Michael, additional, Levenson, Nancy, additional, Levine, Marie, additional, Levy, Zena, additional, Lewis, Dan, additional, Lewis, Hannah, additional, Libralato, Mattia, additional, Lightsey, Paul, additional, Link, Miranda, additional, Liu, Lily, additional, Lo, Amy, additional, Lockwood, Alexandra, additional, Logue, Ryan, additional, Long, Chris, additional, Long, Douglas, additional, Loomis, Charles, additional, Lopez-Caniego, Marcos, additional, Lorenzo Alvarez, Jose, additional, Love-Pruitt, Jennifer, additional, Lucy, Adrian, additional, Luetzgendorf, Nora, additional, Maghami, Peiman, additional, Maiolino, Roberto, additional, Major, Melissa, additional, Malla, Sunita, additional, Malumuth, Eliot, additional, Manjavacas, Elena, additional, Mannfolk, Crystal, additional, Marrione, Amanda, additional, Marston, Anthony, additional, Martel, André, additional, Maschmann, Marc, additional, Masci, Gregory, additional, Masciarelli, Michaela, additional, Maszkiewicz, Michael, additional, Mather, John, additional, McKenzie, Kenny, additional, McLean, Brian, additional, McMaster, Matthew, additional, Melbourne, Katie, additional, Meléndez, Marcio, additional, Menzel, Michael, additional, Merz, Kaiya, additional, Meyett, Michele, additional, Meza, Luis, additional, Miskey, Cherie, additional, Misselt, Karl, additional, Moller, Christopher, additional, Morrison, Jane, additional, Morse, Ernie, additional, Moseley, Harvey, additional, Mosier, Gary, additional, Mountain, Matt, additional, Mueckay, Julio, additional, Mueller, Michael, additional, Mullally, Susan, additional, Murphy, Jess, additional, Murray, Katherine, additional, Murray, Claire, additional, Mustelier, David, additional, Muzerolle, James, additional, Mycroft, Matthew, additional, Myers, Richard, additional, Myrick, Kaila, additional, Nanavati, Shashvat, additional, Nance, Elizabeth, additional, Nayak, Omnarayani, additional, Naylor, Bret, additional, Nelan, Edmund, additional, Nickson, Bryony, additional, Nielson, Alethea, additional, Nieto-Santisteban, Maria, additional, Nikolov, Nikolay, additional, Noriega-Crespo, Alberto, additional, O’Shaughnessy, Brian, additional, O’Sullivan, Brian, additional, Ochs, William, additional, Ogle, Patrick, additional, Oleszczuk, Brenda, additional, Olmsted, Joseph, additional, Osborne, Shannon, additional, Ottens, Richard, additional, Owens, Beverly, additional, Pacifici, Camilla, additional, Pagan, Alyssa, additional, Page, James, additional, Park, Sang, additional, Parrish, Keith, additional, Patapis, Polychronis, additional, Paul, Lee, additional, Pauly, Tyler, additional, Pavlovsky, Cheryl, additional, Pedder, Andrew, additional, Peek, Matthew, additional, Pena-Guerrero, Maria, additional, Penanen, Konstantin, additional, Perez, Yesenia, additional, Perna, Michele, additional, Perriello, Beth, additional, Phillips, Kevin, additional, Pietraszkiewicz, Martin, additional, Pinaud, Jean-Paul, additional, Pirzkal, Norbert, additional, Pitman, Joseph, additional, Piwowar, Aidan, additional, Platais, Vera, additional, Player, Danielle, additional, Plesha, Rachel, additional, Pollizi, Joe, additional, Polster, Ethan, additional, Pontoppidan, Klaus, additional, Porterfield, Blair, additional, Proffitt, Charles, additional, Pueyo, Laurent, additional, Pulliam, Christine, additional, Quirt, Brian, additional, Quispe Neira, Irma, additional, Ramos Alarcon, Rafael, additional, Ramsay, Leah, additional, Rapp, Greg, additional, Rapp, Robert, additional, Rauscher, Bernard, additional, Ravindranath, Swara, additional, Rawle, Timothy, additional, Regan, Michael, additional, Reichard, Timothy A., additional, Reis, Carl, additional, Ressler, Michael E., additional, Rest, Armin, additional, Reynolds, Paul, additional, Rhue, Timothy, additional, Richon, Karen, additional, Rickman, Emily, additional, Ridgaway, Michael, additional, Ritchie, Christine, additional, Rix, Hans-Walter, additional, Robberto, Massimo, additional, Robinson, Gregory, additional, Robinson, Michael, additional, Robinson, Orion, additional, Rock, Frank, additional, Rodriguez, David, additional, Rodriguez Del Pino, Bruno, additional, Roellig, Thomas, additional, Rohrbach, Scott, additional, Roman, Anthony, additional, Romelfanger, Fred, additional, Rose, Perry, additional, Roteliuk, Anthony, additional, Roth, Marc, additional, Rothwell, Braden, additional, Rowlands, Neil, additional, Roy, Arpita, additional, Royer, Pierre, additional, Royle, Patricia, additional, Rui, Chunlei, additional, Rumler, Peter, additional, Runnels, Joel, additional, Russ, Melissa, additional, Rustamkulov, Zafar, additional, Ryden, Grant, additional, Ryer, Holly, additional, Sabata, Modhumita, additional, Sabatke, Derek, additional, Sabbi, Elena, additional, Samuelson, Bridget, additional, Sapp, Benjamin, additional, Sappington, Bradley, additional, Sargent, B., additional, Sauer, Arne, additional, Scheithauer, Silvia, additional, Schlawin, Everett, additional, Schlitz, Joseph, additional, Schmitz, Tyler, additional, Schneider, Analyn, additional, Schreiber, Jürgen, additional, Schulze, Vonessa, additional, Schwab, Ryan, additional, Scott, John, additional, Sembach, Kenneth, additional, Shanahan, Clare, additional, Shaughnessy, Bryan, additional, Shaw, Richard, additional, Shawger, Nanci, additional, Shay, Christopher, additional, Sheehan, Evan, additional, Shen, Sharon, additional, Sherman, Allan, additional, Shiao, Bernard, additional, Shih, Hsin-Yi, additional, Shivaei, Irene, additional, Sienkiewicz, Matthew, additional, Sing, David, additional, Sirianni, Marco, additional, Sivaramakrishnan, Anand, additional, Skipper, Joy, additional, Sloan, G. C., additional, Slocum, Christine, additional, Slowinski, Steven, additional, Smith, Erin, additional, Smith, Eric, additional, Smith, Denise, additional, Smith, Corbett, additional, Snyder, Gregory, additional, Soh, Warren, additional, Tony Sohn, Sangmo, additional, Soto, Christian, additional, Spencer, Richard, additional, Stallcup, Scott, additional, Stansberry, John, additional, Starr, Carl, additional, Starr, Elysia, additional, Stewart, Alphonso, additional, Stiavelli, Massimo, additional, Straughn, Amber, additional, Strickland, David, additional, Stys, Jeff, additional, Summers, Francis, additional, Sun, Fengwu, additional, Sunnquist, Ben, additional, Swade, Daryl, additional, Swam, Michael, additional, Swaters, Robert, additional, Swoish, Robby, additional, Taylor, Joanna M., additional, Taylor, Rolanda, additional, Te Plate, Maurice, additional, Tea, Mason, additional, Teague, Kelly, additional, Telfer, Randal, additional, Temim, Tea, additional, Thatte, Deepashri, additional, Thompson, Christopher, additional, Thompson, Linda, additional, Thomson, Shaun, additional, Tikkanen, Tuomo, additional, Tippet, William, additional, Todd, Connor, additional, Toolan, Sharon, additional, Tran, Hien, additional, Trejo, Edwin, additional, Truong, Justin, additional, Tsukamoto, Chris, additional, Tustain, Samuel, additional, Tyra, Harrison, additional, Ubeda, Leonardo, additional, Underwood, Kelli, additional, Uzzo, Michael, additional, Van Campen, Julie, additional, Vandal, Thomas, additional, Vandenbussche, Bart, additional, Vila, Begoña, additional, Volk, Kevin, additional, Wahlgren, Glenn, additional, Waldman, Mark, additional, Walker, Chanda, additional, Wander, Michel, additional, Warfield, Christine, additional, Warner, Gerald, additional, Wasiak, Matthew, additional, Watkins, Mitchell, additional, Weaver, Andrew, additional, Weilert, Mark, additional, Weiser, Nick, additional, Weiss, Ben, additional, Weissman, Sarah, additional, Welty, Alan, additional, West, Garrett, additional, Wheate, Lauren, additional, Wheatley, Elizabeth, additional, Wheeler, Thomas, additional, White, Rick, additional, Whiteaker, Kevin, additional, Whitehouse, Paul, additional, Whiteleather, Jennifer, additional, Whitman, William, additional, Williams, Christina, additional, Willmer, Christopher, additional, Willoughby, Scott, additional, Wilson, Andrew, additional, Wirth, Gregory, additional, Wislowski, Emily, additional, Wolf, Erin, additional, Wolfe, David, additional, Wolff, Schuyler, additional, Workman, Bill, additional, Wright, Ray, additional, Wu, Carl, additional, Wu, Rai, additional, Wymer, Kristen, additional, Yates, Kayla, additional, Yeager, Christopher, additional, Yeates, Jared, additional, Yerger, Ethan, additional, Yoon, Jinmi, additional, Young, Alice, additional, Yu, Susan, additional, Zak, Dean, additional, Zeidler, Peter, additional, Zhou, Julia, additional, Zielinski, Thomas, additional, Zincke, Cristian, additional, and Zonak, Stephanie, additional

Published
2023
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157. The Mid-infrared Instrument for JWST and Its In-flight Performance

Author

Wright, Gillian S., primary, Rieke, George H., additional, Glasse, Alistair, additional, Ressler, Michael, additional, García Marín, Macarena, additional, Aguilar, Jonathan, additional, Alberts, Stacey, additional, Álvarez-Márquez, Javier, additional, Argyriou, Ioannis, additional, Banks, Kimberly, additional, Baudoz, Pierre, additional, Boccaletti, Anthony, additional, Bouchet, Patrice, additional, Bouwman, Jeroen, additional, Brandl, Bernard R., additional, Breda, David, additional, Bright, Stacey, additional, Cale, Steven, additional, Colina, Luis, additional, Cossou, Christophe, additional, Coulais, Alain, additional, Cracraft, Misty, additional, De Meester, Wim, additional, Dicken, Daniel, additional, Engesser, Michael, additional, Etxaluze, Mireya, additional, Fox, Ori D., additional, Friedman, Scott, additional, Fu, Henry, additional, Gasman, Danny, additional, Gáspár, András, additional, Gastaud, René, additional, Geers, Vincent, additional, Glauser, Adrian Michael, additional, Gordon, Karl D., additional, Greene, Thomas, additional, Greve, Thomas R., additional, Grundy, Timothy, additional, Güdel, Manuel, additional, Guillard, Pierre, additional, Haderlein, Peter, additional, Hashimoto, Ryan, additional, Henning, Thomas, additional, Hines, Dean, additional, Holler, Bryan, additional, Detre, Örs Hunor, additional, Jahromi, Amir, additional, James, Bryan, additional, Jones, Olivia C., additional, Justtanont, Kay, additional, Kavanagh, Patrick, additional, Kendrew, Sarah, additional, Klaassen, Pamela, additional, Krause, Oliver, additional, Labiano, Alvaro, additional, Lagage, Pierre-Olivier, additional, Lambros, Scott, additional, Larson, Kirsten, additional, Law, David, additional, Lee, David, additional, Libralato, Mattia, additional, Alverez, Jose Lorenzo, additional, Meixner, Margaret, additional, Morrison, Jane, additional, Mueller, Migo, additional, Murray, Katherine, additional, Mycroft, Matthew, additional, Myers, Richard, additional, Nayak, Omnarayani, additional, Naylor, Bret, additional, Nickson, Bryony, additional, Noriega-Crespo, Alberto, additional, Östlin, Göran, additional, O’Sullivan, Brian, additional, Ottens, Richard, additional, Patapis, Polychronis, additional, Penanen, Konstantin, additional, Pietraszkiewicz, Martin, additional, Ray, Tom, additional, Regan, Michael, additional, Roteliuk, Anthony, additional, Royer, Pierre, additional, Samara-Ratna, Piyal, additional, Samuelson, Bridget, additional, Sargent, Beth A., additional, Scheithauer, Silvia, additional, Schneider, Analyn, additional, Schreiber, Jürgen, additional, Shaughnessy, Bryan, additional, Sheehan, Evan, additional, Shivaei, Irene, additional, Sloan, G. C., additional, Tamas, Laszlo, additional, Teague, Kelly, additional, Temim, Tea, additional, Tikkanen, Tuomo, additional, Tustain, Samuel, additional, van Dishoeck, Ewine F., additional, Vandenbussche, Bart, additional, Weilert, Mark, additional, Whitehouse, Paul, additional, and Wolff, Schuyler, additional

Published
2023
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159. Spectroscopic Time Series Performance of the Mid-infrared Instrument on the JWST

Author

Bouwman, Jeroen, primary, Kendrew, Sarah, additional, Greene, Thomas P., additional, Bell, Taylor J., additional, Lagage, Pierre-Olivier, additional, Schreiber, Jürgen, additional, Dicken, Daniel, additional, Sloan, G. C., additional, Espinoza, Néstor, additional, Scheithauer, Silvia, additional, Coulais, Alain, additional, Fox, Ori D., additional, Gastaud, René, additional, Glauser, Adrian M., additional, Jones, Olivia C., additional, Labiano, Alvaro, additional, Lahuis, Fred, additional, Morrison, Jane E., additional, Murray, Katherine, additional, Mueller, Michael, additional, Nayak, Omnarayani, additional, Wright, Gillian S., additional, Glasse, Alistair, additional, and Rieke, George, additional

Published
2023
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160. Performance of NIRCam on JWST in Flight

Author

Rieke, Marcia J., primary, Kelly, Douglas M., additional, Misselt, Karl, additional, Stansberry, John, additional, Boyer, Martha, additional, Beatty, Thomas, additional, Egami, Eiichi, additional, Florian, Michael, additional, Greene, Thomas P., additional, Hainline, Kevin, additional, Leisenring, Jarron, additional, Roellig, Thomas, additional, Schlawin, Everett, additional, Sun, Fengwu, additional, Tinnin, Lee, additional, Williams, Christina C., additional, Willmer, Christopher N. A., additional, Wilson, Debra, additional, Clark, Charles R., additional, Rohrbach, Scott, additional, Brooks, Brian, additional, Canipe, Alicia, additional, Correnti, Matteo, additional, DiFelice, Audrey, additional, Gennaro, Mario, additional, Girard, Julian, additional, Hartig, George, additional, Hilbert, Bryan, additional, Koekemoer, Anton M., additional, Nikolov, Nikolay K., additional, Pirzkal, Norbert, additional, Rest, Armin, additional, Robberto, Massimo, additional, Sunnquist, Ben, additional, Telfer, Randal, additional, Wu, Chi Rai, additional, Ferry, Malcolm, additional, Lewis, Dan, additional, Baum, Stefi, additional, Beichman, Charles, additional, Doyon, René, additional, Dressler, Alan, additional, Eisenstein, Daniel J., additional, Ferrarese, Laura, additional, Hodapp, Klaus, additional, Horner, Scott, additional, Jaffe, Daniel T., additional, Johnstone, Doug, additional, Krist, John, additional, Martin, Peter, additional, McCarthy, Donald W., additional, Meyer, Michael, additional, Rieke, George H., additional, Trauger, John, additional, and Young, Erick T., additional

Published
2023
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161. NIRCam: The JWST Near-IR Camera and Slitless Spectrograph

Author

Greene, Thomas

Subjects
Astrophysics, Instrumentation And Photography
Abstract

NIRCam is the primary near-infrared camera for JWST. It is well-suited for a wide variety of star formation and other scientific studies and will also be used for aligning the JWST primary mirror segments and telescope. NIRCam will provide high sensitivity, high spatial resolution images in a variety of filters over the 0.6 - 5 μm wavelength region including coronagraphic modes and slitless spectroscopic capabilities. NIRCam consists of two identical optical modules that have adjacent 2.2' x 2.2' fields of view on the sky. Each module is composed of two channels that observe the same field at short (< 2.4 μm) or long (> 2.4 μm) wavelengths simultaneously, with optimized spatial sampling in each channel. NIRCam optical elements include narrow (R = 100), medium (R = 10), and wide (R <= 4) filters, coronagraphic imaging spot and bar masks, and grisms that provide wide-field or time-series slitless spectroscopy. These major NIRCam features will be introduced, and some applications to galactic star formation will be briefly presented.

Published
2019

170. JWST NIRCam Defocused Imaging: Photometric Stability Performance and How It Can Sense Mirror Tilts

Author

Schlawin, Everett, primary, Beatty, Thomas, additional, Brooks, Brian, additional, Nikolov, Nikolay K., additional, Greene, Thomas P., additional, Espinoza, Néstor, additional, Glidic, Kayli, additional, Baka, Keith, additional, Egami, Eiichi, additional, Stansberry, John, additional, Boyer, Martha, additional, Gennaro, Mario, additional, Leisenring, Jarron, additional, Hilbert, Bryan, additional, Misselt, Karl, additional, Kelly, Doug, additional, Canipe, Alicia, additional, Beichman, Charles, additional, Correnti, Matteo, additional, Knight, J. Scott, additional, Jurling, Alden, additional, Perrin, Marshall D., additional, Feinberg, Lee D., additional, McElwain, Michael W., additional, Bond, Nicholas, additional, Ciardi, David, additional, Kendrew, Sarah, additional, and Rieke, Marcia, additional

Published
2023
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171. Spectroscopic Time-series Performance of JWST/NIRSpec from Commissioning Observations

Author

Espinoza, Néstor, primary, Úbeda, Leonardo, additional, Birkmann, Stephan M., additional, Ferruit, Pierre, additional, Valenti, Jeff A., additional, Sing, David K., additional, Rustamkulov, Zafar, additional, Regan, Michael, additional, Kendrew, Sarah, additional, Sabbi, Elena, additional, Schlawin, Everett, additional, Beatty, Thomas, additional, Albert, Loïc, additional, Greene, Thomas P., additional, Nikolov, Nikolay, additional, Karakla, Diane, additional, Keyes, Charles, additional, Alves de Oliveira, Catarina, additional, Böker, Torsten, additional, Pena-Guerrero, Maria, additional, Giardino, Giovanna, additional, Kumari, Nimisha, additional, Manjavacas, Elena, additional, Proffitt, Charles, additional, and Rawle, Timothy, additional

Published
2023
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176. SO2, silicate clouds, but no CH4detected in a warm Neptune

Author

Dyrek, Achrène, Min, Michiel, Decin, Leen, Bouwman, Jeroen, Crouzet, Nicolas, Mollière, Paul, Lagage, Pierre-Olivier, Konings, Thomas, Tremblin, Pascal, Güdel, Manuel, Pye, John, Waters, Rens, Henning, Thomas, Vandenbussche, Bart, Ardevol Martinez, Francisco, Argyriou, Ioannis, Ducrot, Elsa, Heinke, Linus, van Looveren, Gwenael, Absil, Olivier, Barrado, David, Baudoz, Pierre, Boccaletti, Anthony, Cossou, Christophe, Coulais, Alain, Edwards, Billy, Gastaud, René, Glasse, Alistair, Glauser, Adrian, Greene, Thomas P., Kendrew, Sarah, Krause, Oliver, Lahuis, Fred, Mueller, Michael, Olofsson, Goran, Patapis, Polychronis, Rouan, Daniel, Royer, Pierre, Scheithauer, Silvia, Waldmann, Ingo, Whiteford, Niall, Colina, Luis, van Dishoeck, Ewine F., Östlin, Göran, Ray, Tom P., and Wright, Gillian

Abstract

WASP-107b is a warm (approximately 740 K) transiting planet with a Neptune-like mass of roughly 30.5 M⊕and Jupiter-like radius of about 0.94 RJ(refs. 1,2), whose extended atmosphere is eroding3. Previous observations showed evidence for water vapour and a thick, high-altitude condensate layer in the atmosphere of WASP-107b (refs. 4,5). Recently, photochemically produced sulfur dioxide (SO2) was detected in the atmosphere of a hot (about 1,200 K) Saturn-mass planet from transmission spectroscopy near 4.05 μm (refs. 6,7), but for temperatures below about 1,000 K, sulfur is predicted to preferably form sulfur allotropes instead of SO2(refs. 8–10). Here we report the 9σdetection of two fundamental vibration bands of SO2, at 7.35 μm and 8.69 μm, in the transmission spectrum of WASP-107b using the Mid-Infrared Instrument (MIRI) of JWST. This discovery establishes WASP-107b as the second irradiated exoplanet with confirmed photochemistry, extending the temperature range of exoplanets exhibiting detected photochemistry from about 1,200 K down to about 740 K. Furthermore, our spectral analysis reveals the presence of silicate clouds, which are strongly favoured (around 7σ) over simpler cloud set-ups. Furthermore, water is detected (around 12σ) but methane is not. These findings provide evidence of disequilibrium chemistry and indicate a dynamically active atmosphere with a super-solar metallicity.

Published
2024
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177. A Mirage or an Oasis? Water Vapor in the Atmosphere of the Warm Neptune TOI-674 b

Author

Brande, Jonathan, primary, Crossfield, Ian J. M., additional, Kreidberg, Laura, additional, Oklopčić, Antonija, additional, Polanski, Alex S., additional, Barman, Travis, additional, Benneke, Björn, additional, Christiansen, Jessie L., additional, Dragomir, Diana, additional, Foreman-Mackey, Daniel, additional, Fortney, Jonathan J., additional, Greene, Thomas P., additional, Howard, Andrew W., additional, Knutson, Heather A., additional, Lothringer, Joshua D., additional, Mikal-Evans, Thomas, additional, and Morley, Caroline V., additional

Published
2022
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178. Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c

Author

Kreidberg, Laura, primary, Mollière, Paul, additional, Crossfield, Ian J. M., additional, Thorngren, Daniel P., additional, Kawashima, Yui, additional, Morley, Caroline V., additional, Benneke, Björn, additional, Mikal-Evans, Thomas, additional, Berardo, David, additional, Kosiarek, Molly R., additional, Gorjian, Varoujan, additional, Ciardi, David R., additional, Christiansen, Jessie L., additional, Dragomir, Diana, additional, Dressing, Courtney D., additional, Fortney, Jonathan J., additional, Fulton, Benjamin J., additional, Greene, Thomas P., additional, Hardegree-Ullman, Kevin K., additional, Howard, Andrew W., additional, Howell, Steve B., additional, Isaacson, Howard, additional, Krick, Jessica E., additional, Livingston, John H., additional, Lothringer, Joshua D., additional, Morales, Farisa Y., additional, Petigura, Erik A., additional, Rodriguez, Joseph E., additional, Schlieder, Joshua E., additional, and Weiss, Lauren M., additional

Published
2022
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179. First Peek with JWST/NIRCam Wide-field Slitless Spectroscopy: Serendipitous Discovery of a Strong [O iii]/Hα Emitter at z = 6.11

Author

Sun, Fengwu, primary, Egami, Eiichi, additional, Pirzkal, Nor, additional, Rieke, Marcia, additional, Boyer, Martha, additional, Correnti, Matteo, additional, Gennaro, Mario, additional, Girard, Julien, additional, Greene, Thomas P., additional, Kelly, Doug, additional, Koekemoer, Anton M., additional, Leisenring, Jarron, additional, Misselt, Karl, additional, Nikolov, Nikolay, additional, Roellig, Thomas L., additional, Stansberry, John, additional, Williams, Christina C., additional, and Willmer, Christopher N. A., additional

Published
2022
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180. Design of SCALES: a 2-5 micron coronagraphic integral field spectrograph for Keck Observatory

Author

Skemer, Andrew J., primary, Stelter, Richard, additional, Sallum, Stephanie, additional, MacDonald, Nicholas, additional, Kupke, Renate, additional, Ratliff, Christopher, additional, Banyal, Ravinder, additional, Hasan, Amirul, additional, Varshney, Hari Mohan, additional, Surya, Arun, additional, Prakaesh, Ajin, additional, Sivarani, Thirupathi, additional, Sethuram, Ramya, additional, K.V., Govinda, additional, Fitzgerald, Michael P., additional, Wang, Eric, additional, Kassis, Marc, additional, Absil, Olivier, additional, Alvarez, Carlos, additional, Batalha, Natasha, additional, Boucher, Marc-André, additional, Bourgenot, Cyril, additional, Brandt, Timothy, additional, Briesemeister, Zackery, additional, de Kleer, Katherine, additional, de Pater, Imke, additional, Deich, Will, additional, Divakar, Devika, additional, Filion, Guillaume, additional, Gauvin, Étienne, additional, Gonzales, Michael, additional, Greene, Thomas, additional, Hinz, Philip, additional, Jensen-Clem, Rebecca, additional, Johnson, Christopher, additional, Kain, Isabel, additional, Kruglikov, Gabriel, additional, Lach, Mackenzie, additional, Landry, Jean-Thomas, additional, Li, Jialin, additional, Liu, Michael, additional, Lyke, James E., additional, Magnone, Kenneth, additional, Marin, Eduardo, additional, Martin, Emily, additional, Martinez, Raquel, additional, Mawet, Dimitri, additional, Miles, Brittany, additional, Sandford, Dale, additional, Sheehan, Patrick, additional, Sohn, Ji Man, additional, and Stone, Jordan, additional

Published
2022
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181. The Pandora SmallSat: a mission to spectroscopically study exoplanet atmospheres

Author

Hoffman, Kelsey, primary, Quintana, Elisa, additional, Dotson, Jessie, additional, Colón, Knicole, additional, Barclay, Thomas, additional, Supsinskas, Pete, additional, Karburn, Jordan, additional, Apai, Dániel, additional, Hedges, Christina, additional, Rackham, Benjamin, additional, Rowe, Jason, additional, Christiansen, Jessie, additional, Greene, Thomas, additional, Mason, James, additional, Mosby, Gregory, additional, Espinoza, Néstor, additional, Gilbert, Emily, additional, Kostov, Veselin, additional, Lewis, Nikole, additional, Morris, Brett, additional, Mullally, Susan, additional, Newton, Elisabeth, additional, Schlieder, Joshua, additional, Youngblood, Allison, additional, Foote, Trevor, additional, Mansfield, Megan, additional, Stevenson, Kevin, additional, Villanueva, Steven, additional, and Pepper, Joshua, additional

Published
2022
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182. JWST/NIRCam coronagraphy: commissioning and first on-sky results

Author

Girard, Julien H., primary, Leisenring, Jarron, additional, Kammerer, Jens, additional, Gennaro, Mario, additional, Rieke, Marcia, additional, Stansberry, John, additional, Rest, Armin, additional, Egami, Eiichi, additional, Sunnquist, Ben, additional, Boyer, Martha L., additional, Canipe, Alicia, additional, Correnti, Matteo, additional, Hilbert, Bryan, additional, Perrin, Marshall D., additional, Pueyo, Laurent, additional, Soummer, Rémi, additional, Allen, Marsha, additional, Bushouse, Howard, additional, Aguilar, Jonathan, additional, Brooks, Brian, additional, Coe, Dan, additional, DiFelice, audrey, additional, Golimowski, David, additional, Hartig, George, additional, Hines, Dean, additional, Koekemoer, Anton, additional, Nickson, Bryony, additional, Nikolov, Nikolay, additional, Platais, Vera, additional, Prizkal, Nor, additional, Robberto, Massimo, additional, Sivaramakrishnan, Anand Sivaramakrishnan, additional, Sohn, Sangmo Tony, additional, Telfer, Randal, additional, Wu, Chi Ray, additional, Beatty, Thomas, additional, Florian, Michael, additional, Hainline, Kevin, additional, Kelly, Doug, additional, Misselt, Karl, additional, Schlawin, Everett, additional, Sun, Fengwu, additional, Williams, Christina, additional, Willmer, Christopher, additional, Stark, Christopher, additional, Ygouf, Marie, additional, Carter, Aarynn L., additional, Beichman, Charles, additional, Greene, Thomas P., additional, Roellig, Thomas, additional, Krist, John, additional, Adams, Jea, additional, Wang, Jason, additional, Clark, Charles R., additional, Lewis, Dan, additional, and Ferry, Malcolm, additional

Published
2022
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183. Pandora SmallSat data simulation and target selection

Author

Foote, Trevor, primary, Quintana, Elisa, additional, Dotson, Jessie L., additional, Colon, Knicole D., additional, Barclay, Thomas, additional, Supsinskas, Pete, additional, Karburn, Jordan, additional, Apai, Daniel, additional, Hedges, Christina, additional, Rackham, Benjamin V., additional, Rowe, Jason F., additional, Christiansen, Jessie L., additional, Greene, Thomas P., additional, Mason, James, additional, Mosby, Gregory, additional, Espinoza, Nestor, additional, Gilbert, Emily A., additional, Hoffman, Kelsey, additional, Kostov, Veselin B., additional, Lewis, Nikole, additional, Morris, Brett M., additional, Mullally, Susan E., additional, Newton, Elisabeth R., additional, Schlieder, Joshua E., additional, Youngblood, Allison, additional, Mansfield, Megan, additional, Stevenson, Kevin B., additional, and Villanueva, Steven, additional

Published
2022
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186. Multiwavelength Characterization of Exoplanets and their Host Stars with the Pandora SmallSat: Mission Status

Author

Rackham, Benjamin V., Quintana, Elisa V., Dotson, Jessie L., Colón, Knicole D., Barclay, Thomas, Supsinskas, Pete, Karburn, Jordan, Apai, Dániel, Hedges, Christina, Rowe, Jason F., Christiansen, Jessie L., Espinoza, Néstor, Foote, Trevor O., Gilbert, Emily A., Greene, Thomas P., Hoffman, Kelsey, Kostov, Veselin B., Lewis, Nikole K., Mason, James, Morris, Brett M., Mosby, Gregory, Mullally, Susan E., Newton, Elisabeth R., Pepper, Joshua, Schlieder, Joshua E., Stevenson, Kevin B., and Youngblood, Allison

Subjects
Physics::Space Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

Transmission spectroscopy of transiting exoplanets provides our current best opportunity to study exoplanetary atmospheres, particularly those of smaller exoplanets. However, stellar photospheric heterogeneity due to spots and faculae complicates these studies by introducing spectral signals that can mimic or mask planetary features. The Pandora SmallSat Mission, selected in 2021 as part of NASA’s Astrophysics Pioneers Program, is designed to study the atmospheres of planets transiting active, low-mass stars by disentangling stellar and planetary signals in transmission spectra. Here we provide an overview of Pandora with a focus on the science enabled by its unique multiwavelength dataset. Pandora will observe multiple transits of at least 20 exoplanets with sizes ranging from Earth-size to Jupiter-size and host stars spanning mid-K to late-M spectral types. Pandora will collect long-duration photometric observations with a visible-light channel and simultaneous spectra with a near-IR channel. The broad wavelength coverage will provide constraints on the spot and faculae covering fractions of low-mass exoplanet host stars and the impact of these active regions on transmission spectra. Pandora will subsequently identify exoplanets with hydrogen- or water-dominated atmospheres and robustly determine which planets are covered by clouds and hazes. Pandora’s legacy will be a library of long-duration, simultaneous multiwavelength observations and a catalog of benchmark planets that will aid in target selection and data analysis for JWST and future exoplanet missions. The project is made possible by leveraging investments in other projects, including an all-aluminum 0.45-m Cassegrain telescope design and a NIR sensor chip assembly from JWST. The mission will last five years from initial formation to closeout, with one year of science operations. Launch is planned for the mid-2020s as a secondary payload in a Sun-synchronous low-Earth orbit. This timeline will ensure both rapid scientific results and operational overlap with TESS, HST, and JWST, enabling synergistic studies.

Published
2022
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188. Violence Affecting School Employees.

Author

Kondrasuk, Jack N., Greene, Thomas, Waggoner, Jacqueline, Edwards, Kristen, and NaYak-Rhodes, Aradhana

Abstract

A review of the literature shows significant violence (both physical and verbal threats) in schools in the United States (U.S.). Almost all of the studies focus on violence by students and against students. There is very limited information about violence involving employees in the schools even though teachers are three times more likely to be attacked than are students on a per capita basis. The purpose of this study was to understand the extent, causation, and reduction of violence against school employees in a metropolitan area. Administrators of all schools (K-12, vocational schools, and colleges) in a 4-county, 2-state metropolitan area were surveyed. The results of the survey found that violence in the Portland metropolitan area was not as prevalent as nationwide trends indicate. However, most respondents believed violence would continue at the present level into the future. More research needs to be conducted about violence against school employees, but it should carefully consider the geographical area and the type of respondents.

Published
2005

189. A Tale of Two Students: Building a Culture of Engagement in the Community College

Author

McClenney, Kay M. and Greene, Thomas

Abstract

In this article, the authors present two stories that depict the best and worst of times experienced by today's community college students. Within these narratives are both vestiges of the past--pieces that some colleges have yet to fully discard--and exemplars of a potentially brighter, more engaging future. While they are fictitious, these vignettes describe composite student experiences, both positive and negative, that are not atypical in community colleges. The stories are supported by findings from the Community College Survey of Student Engagement (CCSSE) and from twenty-four student focus groups conducted by CCSSE staff in 2003 and 2004. The authors hope that these vignettes will convey the importance of accurately understanding students' experiences at each college as they are told through systematically gathered evidence. In particular, the stories reinforce the critical importance of engaging students--connecting them early and often to one another, to faculty and staff, and to the subject matter of their studies. If nothing else, the stories emphasize the reality that in community colleges, given the multiple commitments of their students and the challenges they bring with them to college, engagement does not happen by accident but by design. (Contains 3 notes.)

Published
2005
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194. Walking the Talk Is Tough: From a Single Technology Course to Infusion.

Author

Eifler, Karen E., Greene, Thomas G., and Carroll, James B.

Abstract

Teacher educators (n=12) completed a scaled assessment of technology use, responded to open-ended questions relating obstacles to their technology use, and participated in structured interviews. Results showed equipment was best used if the right human resources were available for technical assistance. Diverse attitudes about the role of technology were revealed. (Contains 19 references.) (JOW)

Published
2001

195. Nepantla in The Ninth Century: The Monastery of Redon and The Frankish-Breton Borderlands

Author

Greene, Thomas A. E. and Greene, Thomas A. E.

Abstract

Medieval scholars write often about frontiers, but infrequently about borderlands. In this essay I bring together medieval studies and borderland studies, specifically the work of Gloria Anzaldúa, to read anew the Gesta Sanctorum Rotonensium (Deeds of the Holy Men of Redon). This late ninth century text describes the establishment (in 832) and early history of the monastery of Redon, which took place within multiple, overlapping, and contested borders. By translating Anzaldúa’s nepantla into a ninth-century idiom, I read the Gesta as a borderlands text, written by and for residents of the Frankish-Breton borderlands. The fluidity of this borderlands region, I argue, fostered the conflict and becoming essential to nepantla. This enabled the monks to formulate a transgressive identity, and community, that worked around and between and sometimes against both secular and ecclesiastical power.

Published
2022

196. Revisiting the HIP 41378 System with K 2 and Spitzer

Author

Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, Berardo, David Anthony, Crossfield, Ian Jm, Werner, Michael, Petigura, Erik, Christiansen, Jessie, Ciardi, David R, Dressing, Courtney, Fulton, Benjamin J, Gorjian, Varoujan, Greene, Thomas P, Hardegree-Ullman, Kevin, Kane, Stephen R, Livingston, John, Morales, Farisa, Schlieder, Joshua E, Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, Berardo, David Anthony, Crossfield, Ian Jm, Werner, Michael, Petigura, Erik, Christiansen, Jessie, Ciardi, David R, Dressing, Courtney, Fulton, Benjamin J, Gorjian, Varoujan, Greene, Thomas P, Hardegree-Ullman, Kevin, Kane, Stephen R, Livingston, John, Morales, Farisa, and Schlieder, Joshua E

Abstract

© 2019. The American Astronomical Society. All rights reserved. We present new observations of the multiplanet system HIP 41378, a bright star (V = 8.9, K s = 7.7) with five known transiting planets. Previous K2 observations showed multiple transits of two Neptune-sized bodies and single transits of three larger planets (R P = 0.33R J, 0.47R J, 0.88R J). K2 recently observed the system again in Campaign 18 (C18). We observe one new transit each of two of the larger planets d/f, giving maximal orbital periods of 1114/1084 days, as well as integer divisions of these values down to a lower limit of about 50 days. We use all available photometry to determine the eccentricity distributions of HIP 41378 d & f, finding that periods ≲300 days require non-zero eccentricity. We check for overlapping orbits of planets d and f to constrain their mutual periods, finding that short periods (P < 300 days) for planet f are disfavored. We also observe transits of planets b and c with Spitzer/Infrared Array Camera (IRAC), which we combine with the K2 observations to search for transit timing variations (TTVs). We find a linear ephemeris for planet b, but see a significant TTV signal for planet c. The ability to recover the two smaller planets with Spitzer shows that this fascinating system will continue to be detectable with Spitzer, CHEOPS, TESS, and other observatories, allowing us to precisely determine the periods of d and f, characterize the TTVs of planet c, recover the transits of planet e, and further enhance our view of this remarkable dynamical laboratory.

Published
2022

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