Browsing Research publications by Author "Cochran, William D."

Now showing items 1-7 of 7

    • An abundance of small exoplanets around stars with a wide range of metallicities 

      Buchhave, Lars A.; Latham, David W.; Johansen, Anders; Bizzarro, Martin; Torres, Guillermo; Rowe, Jason F.; Batalha, Natalie M.; Borucki, William J.; Brugamyer, Erik; Caldwell, Caroline; Bryson, Stephen T.; Ciardi, David R.; Cochran, William D.; Endl, Michael; Esquerdo, Gilbert A.; Ford, Eric B.; Geary, John C.; Gilliland, Ronald L.; Hansen, Terese; Isaacson, Howard; Laird, John B.; Lucas, P.W.; Marcy, Geoffrey W.; Morse, Jon A.; Robertson, Paul; Shporer, Avi; Stefanik, Robert P.; Still, Martin; Quinn, Samuel N. (2012-06-21)
      The abundance of heavy elements (metallicity) in the photospheres of stars similar to the Sun provides a 'fossil' record of the chemical composition of the initial protoplanetary disk. Metal-rich stars are much more likely ...

    • Kepler-424 b: A "lonely" hot Jupiter that found a companion 

      Endl, Michael; Caldwell, Douglas A.; Barclay, Thomas; Huber, Daniel; Isaacson, Howard; Buchhave, Lars A.; Brugamyer, Erik; Robertson, Paul; Cochran, William D.; MacQueen, Phillip J.; Havel, Mathieu; Lucas, P.W.; Howell, Steve B.; Fischer, Debra; Quintana, Elisa; Ciardi, David R. (2014-11-10)

    • Masses, radii, and orbits of small Kepler planets : The transition from gaseous to rocky planets 

      Marcy, Geoffrey W.; Isaacson, Howard; Howard, Andrew W.; Rowe, Jason F.; Jenkins, Jon M.; Bryson, Stephen T.; Latham, David W.; Howell, Steve B.; Gautier, Thomas N.; Batalha, Natalie M.; Rogers, Leslie; Ciardi, David; Fischer, Debra A.; Gilliland, Ronald L.; Kjeldsen, H.; Christensen-Dalsgaard, J.; Huber, Daniel; Chaplin, William J.; Basu, S.; Buchhave, Lars A.; Quinn, Samuel N.; Borucki, William J.; Koch, David G.; Hunter, Roger; Caldwell, Douglas A.; Van Cleve, Jeffrey; Kolbl, Rea; Weiss, Lauren M.; Petigura, Erik; Seager, Sara; Morton, Timothy; Johnson, John Asher; Ballard, Sarah; Burke, Chris; Cochran, William D.; Endl, Michael; MacQueen, Phillip; Everett, Mark E.; Lissauer, Jack J.; Ford, Eric B.; Torres, Guillermo; Fressin, Francois; Brown, Timothy M.; Steffen, Jason H.; Charbonneau, David; Basri, G.; Sasselov, Dimitar D.; Winn, Joshua; Sanchis-Ojeda, Roberto; Christiansen, Jessie; Adams, Elisabeth; Henze, Christopher; Dupree, Andrea; Fabrycky, Daniel C.; Fortney, Jonathan J.; Tarter, Jill; Holman, Matthew J.; Tenenbaum, Peter; Shporer, Avi; Lucas, P.W.; Welsh, William F.; Orosz, Jerome A.; Bedding, T.R.; Campante, T.L.; Davies, G.R.; Elsworth, Y.; Handberg, R.; Hekker, S.; Karoff, C.; Kawaler, S.D.; Lund, M.N.; Lundkvist, M.; Metcalfe, T.S.; Miglio, A.; Silva Aguirre, V.; Stello, D.; White, T.R.; Boss, Alan; DeVore, E.; Gould, Alan; Prsa, A.; Agol, Eric; Barclay, Thomas; Coughlin, Jeff; Brugamyer, Erik; Mullally, Fergal; Quintana, Elisa V.; Still, Martin; Thompson, Susan E.; Morrison, David; Twicken, Joseph D.; Desert, Jean-Michel; Carter, Josh; Crepp, Justin R.; Hebrard, Guillaume; Santerne, Alexandre; Moutou, Claire; Sobeck, Charlie; Hudgins, Douglas; Haas, Michael R.; Robertson, Paul; Lillo-Box, Jorge; Barrado, David (2014-01-13)
      We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7 revealed by precise Doppler measurements ...

    • The remarkable solar twin HIP 56948: : a prime target in the quest for other Earths 

      Melendez, Jorge; Bergemann, Maria; Cohen, Judith G.; Endl, Michael; Karakas, Amanda I.; Ramirez, Ivan; Cochran, William D.; Yong, David; MacQueen, Phillip J.; Kobayashi, Chiaki; Asplund, Martin (2012-07-01)
      We study HIP 56948, the best solar twin known to date, to determine with an unparalleled precision how similar is to the Sun in its physical properties, chemical composition and planet architecture. We explore whether the ...

    • Transit timing observations from Kepler - III. : Confirmation of four multiple planet systems by a Fourier-domain study of anticorrelated transit timing variations 

      Steffen, Jason H.; Fabrycky, Daniel C.; Ford, Eric B.; Carter, Joshua A.; Desert, Jean-Michel; Fressin, Francois; Holman, Matthew J.; Lissauer, Jack J.; Moorhead, Althea V.; Rowe, Jason F.; Ragozzine, Darin; Welsh, William F.; Batalha, Natalie M.; Borucki, William J.; Buchhave, Lars A.; Bryson, Steve; Caldwell, Douglas A.; Charbonneau, David; Ciardi, David R.; Cochran, William D.; Endl, Michael; Everett, Mark E.; Gautier, Thomas N.; Gilliland, Ron L.; Girouard, Forrest R.; Jenkins, Jon M.; Horch, Elliott; Howell, Steve B.; Isaacson, Howard; Klaus, Todd C.; Koch, David G.; Latham, David W.; Li, Jie; Lucas, P.W.; MacQueen, Phillip J.; Marcy, Geoffrey W.; McCauliff, Sean; Middour, Christopher K.; Morris, Robert L.; Mullally, Fergal R.; Quinn, Samuel N.; Quintana, Elisa V.; Shporer, Avi; Still, Martin; Tenenbaum, Peter; Thompson, Susan E.; Twicken, Joseph D.; Van Cleve, Jeffery (2012-04)
      We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-domain analysis of the deviations in the transit times from a constant ...

    • Transit timing observations from Kepler. II : Confirmation of two multiplanet systems via a non-parametric correlation analysis 

      Ford, Eric B.; Fabrycky, Daniel C.; Steffen, Jason H.; Carter, Joshua A.; Fressin, Francois; Holman, Matthew J.; Lissauer, Jack J.; Moorhead, Althea V.; Morehead, Robert C.; Ragozzine, Darin; Rowe, Jason F.; Welsh, William F.; Allen, Christopher; Batalha, Natalie M.; Borucki, William J.; Bryson, Stephen T.; Buchhave, Lars A.; Burke, Christopher J.; Caldwell, Douglas A.; Charbonneau, David; Clarke, Bruce D.; Cochran, William D.; Desert, Jean-Michel; Endl, Michael; Everett, Mark E.; Fischer, Debra A.; Gautier, Thomas N.; Gilliland, Ron L.; Jenkins, Jon M.; Haas, Michael R.; Horch, Elliott; Howell, Steve B.; Ibrahim, Khadeejah A.; Isaacson, Howard; Koch, David G.; Latham, David W.; Li, Jie; Lucas, P.W.; MacQueen, Phillip J.; Marcy, Geoffrey W.; McCauliff, Sean; Mullally, Fergal R.; Quinn, Samuel N.; Quintana, Elisa; Shporer, Avi; Still, Martin; Tenenbaum, Peter; Thompson, Susan E.; Torres, Guillermo; Twicken, Joseph D.; Wohler, Bill (2012-05-10)
      We present a new method for confirming transiting planets based on the combination of transit timing variations (TTVs) and dynamical stability. Correlated TTVs provide evidence that the pair of bodies is in the same physical ...

    • Transit timing observations from Kepler. IV : Confirmation of four multiple-planet systems by simple physical models 

      Fabrycky, Daniel C.; Ford, Eric B.; Steffen, Jason H.; Rowe, Jason F.; Carter, Joshua A.; Moorhead, Althea V.; Batalha, Natalie M.; Borucki, William J.; Bryson, Steve; Buchhave, Lars A.; Christiansen, Jessie L.; Ciardi, David R.; Cochran, William D.; Endl, Michael; Fanelli, Michael N.; Fischer, Debra; Fressin, Francois; Geary, John; Haas, Michael R.; Hall, Jennifer R.; Holman, Matthew J.; Jenkins, Jon M.; Koch, David G.; Latham, David W.; Li, Jie; Lissauer, Jack J.; Lucas, P.W.; Marcy, Geoffrey W.; Mazeh, Tsevi; McCauliff, Sean; Quinn, Samuel; Ragozzine, Darin; Sasselov, Dimitar; Shporer, Avi (2012-05-10)
      Eighty planetary systems of two or more planets are known to orbit stars other than the Sun. For most, the data can be sufficiently explained by non-interacting Keplerian orbits, so the dynamical interactions of these ...