Paula Sarkis
occupation: researcher
Articles 25
- 2021-01-22Lizhou Sha, Avi Shporer, John Livingston, Louise D. Nielsen, Andrew Vanderburg, Janis Hagelberg, Andrew W. Mann, Motohide Tamura, Luigi Mancini, Stéphane Udry, Norio Narita, Stephen R. Kane, Keivan Stassun, David Latham, Roland Vanderspek, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Robert Wittenmyer, Gáspár Bakos, Christopher E. Henze, Xu Huang, Ian Crossfield, Joel D. Hartman, Adina D Feinstein, John Kielkopf, Benjamin Montet, Knicole Colon, Eric Ting, Rafael Brahm, Paula Sarkis, Brett Addison, Daniel Bayliss, Jonathan Horner, Matthew W. Mengel, Jack Okumura, Peter Plavchan, Thiam-Guan Tan, Michael Vezie, Duncan Wright, Abner Zapata, Carl Ziegler, Gaël Ottoni, George Zhou, Allyson Bieryla, Néstor Espinoza Perez, Akshata Krishnamurthy, Ryan Cloutier, Diana Dragomir, Steven Villanueva, Johanna Teske, Matías R. Díaz, François Bouchy, Jeffrey Crane, Kaloyan Penev, Mauro Barbieri, Holger Drass, David Nespral
- 2021Björn Benneke, Stephen R. Kane, Keivan Stassun, David Latham, Roland Vanderspek, Avi Shporer, David Ciardi, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Robert Wittenmyer, Benjamin J. Fulton, Christopher J. Burke, Mark E Rose, Maximilian N Günther, Ian Crossfield, Steve B. Howell, Erica J. Gonzales, Joseph D. Twicken, Courtney D. Dressing, Rachel A. Matson, Natalie Batalha, James S Jenkins, David J Armstrong, Vardan Adibekyan, David R. Anderson, Matthew R. Burleigh, Sarah L. Casewell, Kevin I. Collins, Rodrigo F. Díaz, Elise Furlan, Andrew William Howard, Andrew W. Mann, Louise D. Nielsen, Erik A. Petigura, Don Pollacco, Nuno C. Santos, Joshua Schlieder, Alexis Smith, Stéphane Udry, Lauren M. Weiss, Richard G West, Peter J. Wheatley, John Kielkopf, Rafael Brahm, Paula Sarkis, Brett Addison, Daniel Bayliss, François Bouchy, Brendan Bowler, Cesar Briceno, Aleisha Hogan, Jonathan Horner, James McCormac, Matthew W. Mengel, Jack Okumura, Peter Plavchan, Thiam-Guan Tan, José Viñes Ibarrola, Duncan Wright, Carl Ziegler, David Barrado, Jorge Lillo-Box, Alexandre Santerne, Néstor Espinoza Perez, Chris Stockdale, Ryan Cloutier, Diana Dragomir, Monika Lendl, Bryson L. Cale, Jesus Noel Villasenor, Ares Osborn, Jon Otegi, Jack S Acton, Sarah-Blythe Ballard, Olivier Demangeon, Xavier Dumusque, Samuel Ford McGill, Varoujan Gorjian, Saeed Hojjatpanah, Sergio Hoyer, Howard Isaacson, Farisa Morales, Michael A. Reefe, Paul A. Strøm, Rosanna H Tilbrook, Nicholas Law, Thomas Barclay
- 2021-03-25George Zhou, Samuel N. Quinn, Louise D. Nielsen, Kevin I. Collins, Andrew Vanderburg, Jessica Mink, Andrew W. Mann, Elisa Quintana, Douglas A. Caldwell, Stephen R. Kane, Keivan Stassun, David Latham, Roland Vanderspek, Michael B. Lund, Brett Addison, Peter Plavchan, Avi Shporer, François Bouchy, Ramotholo Sefako, David Ciardi, Thomas G. Beatty, Jon M Jenkins, George R. Ricker, Joshua Schlieder, Joshua N. Winn, Robert Wittenmyer, Melissa J. Hobson, Christopher E. Henze, Xu Huang, Robert J. Siverd, Ian Crossfield, Steve B. Howell, Erica J. Gonzales, Phillip A Reed, Jason D. Eastman, Courtney D. Dressing, David R. Anderson, Jessie Christiansen, Rachel A. Matson, John Kielkopf, Rafael Brahm, Paula Sarkis, Perry Berlind, Brendan Bowler, Cesar Briceno, GIlbert Esquerdo, Jonathan Horner, Matthew W. Mengel, Jack Okumura, Thiam-Guan Tan, Duncan Wright, Daniel A. Yahalomi, Carl Ziegler, Christian Ahoba-Sam, Sudhish Chimaladinne, Kingsley Kim, Kim McLeod, Caitlin Stibbards, Justin M. Wittrock, Sydney Vach, Allyson Bieryla, Ilaria Carleo, Gavin Wang, Michael Calkins, Priyanka Chaturvedi, Néstor Espinoza Perez, Dax Feliz, Tianjun Gan, Nolan Grieves, Eike Guenther, Natasha Latouf, Shude Mao, Enric Palle, Arjun B. Savel, Manu Stalport
- 2021-12-02Trifon Trifonov, Néstor Espinoza Perez, Thomas Henning, Andres Jordan, David Nesvorný, Jack J. Lissauer, Man Hoi Lee, Melissa J. Hobson, Paula Sarkis, Martin Schlecker, Gáspár Bakos, Mauro Barbieri, Waqas Bhatti, R. Paul Butler, Jeffrey Crane, Matías R. Díaz, Stephen Shectman, Xuesong Wang, George R. Ricker, Avi Shporer, Andrew Vanderburg, Diana Dragomir, Christopher J. Burke, Tansu Daylan, Jon M Jenkins, Sara Seager, Joshua N. Winn, Roland Vanderspek, Rebekah Dawson, Rafael Brahm, Diana Kossakowski, Bernie Shiao, Vincent Suc, José Viñes Ibarrola, Johanna Teske, Bill Wohler, Sangeetha Nandakumar, Bertram Bitsch
- 2021-03-04David Latham, Avi Shporer, Jon M Jenkins, Jack J. Lissauer, Melissa J. Hobson, Xu Huang, Luke Bouma, Mark E Rose, Rebekah Dawson, R. Paul Butler, Howard M. Relles, Kevin I. Collins, George R. Ricker, Rafael Brahm, Paula Sarkis, Trifon Todorov Trifonov, Carl Ziegler, Scott McDermott, Néstor Espinoza Perez, Tianjun Gan, Jiayin Dong, Lyu Abe, Djamel Mékarnia, Georgina Dransfield, Chris Stockdale, Andrew Vanderburg, Johanna Teske, Jeffrey Crane, Bill Wohler, Mauro Barbieri, Brian McLean, Sangeetha Nandakumar, Nicolas Crouzet, Sharon Xuesong Wang, Amaury H. M. J. Triaud, Tristan Guillot, François-Xavier Schmider, Judith Korth, Abdelkrim Agabi, Wenceslas Marie-Sainte, David Charbonneau
- 2021Stephen R. Kane, David Latham, Avi Shporer, Tansu Daylan, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Robert Wittenmyer, Melissa J. Hobson, Xu Huang, Joseph D. Twicken, Louise D. Nielsen, Stéphane Udry, Richard G West, John Kielkopf, Rafael Brahm, Diana Kossakowski, Paula Sarkis, Martin Schlecker, Trifon Todorov Trifonov, Sahar Shahaf, Brett Addison, François Bouchy, Brendan Bowler, Jonathan Horner, Matthew W. Mengel, Jack Okumura, Peter Plavchan, Duncan Wright, Nolan Grieves, Bill Wohler, Brian McLean, Rosanna H Tilbrook, Alexis Smith, Néstor Espinoza Perez, Daniel Thorngren
- 2020-10-29TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey SatelliteNéstor Espinoza Perez, Louise D. Nielsen, Allyson Bieryla, John Kielkopf, Andrew W. Mann, Stéphane Udry, Douglas A. Caldwell, Tsevi Mazeh, Stephen R. Kane, Keivan Stassun, David Latham, Roland Vanderspek, Avi Shporer, Jon M Jenkins, Samuel N. Quinn, George R. Ricker, Joshua Schlieder, Joshua N. Winn, Robert Wittenmyer, Melissa J. Hobson, Gáspár Bakos, Allen B. Davis, Benjamin J. Fulton, Christopher E. Henze, Xu Huang, Damien Ségransan, Robert J. Siverd, Rafael Brahm, Songhu Wang, Diana Kossakowski, Paula Sarkis, Martin Schlecker, Trifon Todorov Trifonov, Sahar Shahaf, Brett Addison, Waqas Bhatti, Daniel Bayliss, Perry Berlind, François Bouchy, Brendan Bowler, Cesar Briceno, GIlbert Esquerdo, Aleisha Hogan, Jonathan Horner, James McCormac, Matthew W. Mengel, Ismael Mireles, Jack Okumura, Peter Plavchan, Markus Rabus, Bernie Shiao, Vincent Suc, Thiam-Guan Tan, Michael Vezie, José Viñes Ibarrola, Duncan Wright, Daniel A. Yahalomi, Abner Zapata, Carl Ziegler, David Charbonneau
- 2020-08-26George Zhou, Avi Shporer, Louise D. Nielsen, Andrew W. Mann, Elisa Quintana, Stéphane Udry, Todd J. Henry, Keivan Stassun, David Latham, Roland Vanderspek, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Xu Huang, Mark E Rose, Jeffrey C Smith, Maximilian N Günther, R. Paul Butler, Michael Ireland, Rafael Brahm, Paula Sarkis, Ismael Mireles, Michael Vezie, Daniel A. Yahalomi, Carl Ziegler, Nolan Grieves, Leonardo A. Paredes, Wei-Chun Jao, François Bouchy, Erin Flowers, Hodari-Sadiki James, Zhuchang Zhan, Peter Tenenbaum, Nicholas Law
- 2020-08-14Emil Knudstrup, John Livingston, Oscar Barragán, Aurélien Wyttenbach, Louise D. Nielsen, Vincent Van Eylen, Davide Gandolfi, Savita Mathur, Juan Cabrera, Daniel Huber, David Ciardi, Aline Vidotto, Marek Skarka, Norio Narita, Heike Rauer, Stephen R. Kane, Keivan Stassun, David Latham, Roland Vanderspek, Jon M Jenkins, Michael B. Lund, George R. Ricker, Joshua Schlieder, Joshua N. Winn, Benjamin J. Fulton, Mark E Rose, Jeffrey C Smith, Ian Crossfield, Erica J. Gonzales, Joseph D. Twicken, Courtney D. Dressing, Natalie Batalha, R. Paul Butler, Rafael García, Kevin I. Collins, Andrew William Howard, Erik A. Petigura, Lauren M. Weiss, Hans J. Deeg, Kristine W. F. Lam, Michael Endl, Michael Fausnaugh, Rafael Brahm, Paula Sarkis, Ismael Mireles, Prajwal Niraula, Ilaria Carleo, Nolan Grieves, Eike Guenther, Enric Palle, Diana Dragomir, Corey Beard, Johanna Teske, Matías R. Díaz, François Bouchy, Jeffrey Crane, Erin Flowers, Ashley Chontos, Patricia Boyd, David Nespral, Howard Isaacson, Judith Korth, Alexis Smith, Philipp Eigmüller, Serena Benatti, Paul Mollière, Seth Redfield, María Luisa Serrano, Florian Rodler, Lorenzo Spina, Iskra Georgieva, Lucía González Cuesta, Szilárd Csizmadia, Anders Sparrman, Néstor Espinoza Perez, Sascha Grziwa, Petr Kabath, Jorge Prieto-Arranz, William D. Cochran, Luca Fossati
- 2020-07-20Daniel Bayliss, Liam Raynard, Louise D. Nielsen, David R. Anderson, Matthew R. Burleigh, Didier Queloz, Stéphane Udry, Heike Rauer, Don Pollacco, James S Jenkins, Sarah L. Casewell, Maximilian N Günther, Richard G West, Peter J. Wheatley, David J Armstrong, Melissa J. Hobson, François Bouchy, Jack S Acton, Philipp Eigmüller, Samuel Ford McGill, Edward Gillen, Nolan Grieves, Aleisha Hogan, Monika Lendl, James McCormac, Maximiliano Moyano, Alexis Smith, Rosanna H Tilbrook, José Viñes Ibarrola, Rafael Brahm, Néstor Espinoza Perez, Paula Sarkis
- 2020-07-02George Zhou, Samuel N. Quinn, Alexander J. Mustill, Louise D. Nielsen, Malcolm Fridlund, Kevin I. Collins, Andrew W. Mann, Stéphane Udry, Keivan Stassun, David Latham, Xu Huang, Avi Shporer, Francesco Pepe, François Bouchy, Manu Stalport, Rafael Brahm, Carl Ziegler, Néstor Espinoza Perez, Paula Sarkis, Michael Ireland, Theron W. Carmichael, Cesar Briceno, Nicholas Law
- 2020-12-28Peter Plavchan, Brett Addison, Jake Clark, Cenk Kayhan, Kevin I. Collins, Savita Mathur, Mikkel N. Lund, Daniel Huber, Andrea Miglio, Andrew W. Mann, David Latham, Sarbani Basu, Warrick H. Ball, Victor Silva Aguirre, Saskia Hekker, Tiago L. Campante, Stephen R. Kane, Keivan Stassun, Roland Vanderspek, Avi Shporer, Tansu Daylan, Jon M Jenkins, George R. Ricker, Joshua Schlieder, Joshua N. Winn, Robert Wittenmyer, Allen B. Davis, Ian Crossfield, Steve B. Howell, Jason D. Eastman, Rachel A. Matson, William J. Chaplin, Tim Bedding, Rafael García, Steven Kawaler, Aldo Serenelli, John Kielkopf, Rafael Brahm, Songhu Wang, Diana Kossakowski, Paula Sarkis, Martin Schlecker, Brendan Bowler, Jonathan Horner, Matthew W. Mengel, Ismael Mireles, Jack Okumura, Thiam-Guan Tan, Duncan Wright, Carl Ziegler, Pam Rowden, Teo Mocnik, Néstor Espinoza Perez, Alexis Heitzmann, Andrew Vanderburg, Bryson L. Cale, Ashley Chontos, Catherine J. Stevens, Guy Davies, Thomas Kallinger, James Kuszlewicz, Nathalie Themeßl, Nicholas Law, Enrico Corsaro, Rasmus Handberg, Stephen Marsden
- 2020-03-06Paula Sarkis, Néstor Espinoza Perez, Andrew W. Mann, Tsevi Mazeh, Stephen R. Kane, David Latham, Roland Vanderspek, Avi Shporer, Tansu Daylan, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Robert Wittenmyer, Allen B. Davis, Christopher E. Henze, Ian Crossfield, Jason D. Eastman, John Kielkopf, Eric Ting, Rafael Brahm, Songhu Wang, Diana Kossakowski, Trifon Todorov Trifonov, Sahar Shahaf, Brett Addison, Daniel Bayliss, Brendan Bowler, Jonathan Horner, Matthew W. Mengel, Jack Okumura, Peter Plavchan, Markus Rabus, Carl Ziegler, Luke Bouma, Diana Dragomir, Mauro Barbieri, Holger Drass, Sangeetha Nandakumar, Thomas Barclay
- 2020-11-20Martin Schlecker, Néstor Espinoza Perez, Thomas Henning, Ludmila Carone, Karan Molaverdikhani, Trifon Trifonov, Melissa J. Hobson, Andres Jordan, Hubert Klahr, Paula Sarkis, Gáspár Bakos, Waqas Bhatti, George R. Ricker, David Latham, Sara Seager, Joshua N. Winn, Jon M Jenkins, Mark E Rose, David Rodriguez, Joseph Rodriguez, Samuel N. Quinn, Avi Shporer, Roland Vanderspek, Rafael Brahm, Diana Kossakowski, Vincent Suc, Michael Vezie, Jesus Noel Villasenor, Paul Mollière
- 2019-04-29David Ciardi, Joseph Rodriguez, Allyson Bieryla, George Zhou, Sara Seager, Natalie Batalha, George R. Ricker, Joshua Schlieder, Ian Crossfield, Samuel N. Quinn, Martin Paegert, Lizhou Sha, Tansu Daylan, Maximilian N Günther, Kaloyan Penev, Andrew Vanderburg, Andrew W. Mann, Thomas Henning, Elisa Quintana, Keivan Stassun, David Latham, Roland Vanderspek, Avi Shporer, Jessie Christiansen, Jon M Jenkins, Joshua N. Winn, Xu Huang, Luke Bouma, Jason D. Eastman, Andrei Avrelʹevich Tokovinin, Howard M. Relles, John Kielkopf, Knicole Colon, Rafael Brahm, Paula Sarkis, Perry Berlind, GIlbert Esquerdo, Daniel A. Yahalomi, Carl Ziegler, Pablo Lewin, Jason Dittmann, Michael Calkins, Néstor Espinoza Perez, Akshata Krishnamurthy, Zahra Essack, Diana Dragomir, Steven Villanueva, Pamela Rowden, Mma Ikwut-Ukwa, Patricia Boyd, Aylin Garcia Soto, Ana Glidden, Jesus Noel Villasenor, Bill Wohler, Zhuchang Zhan, Thomas Barclay
- 2019-05David Ciardi, Stéphane Udry, Sara Seager, Joshua Schlieder, Ian Crossfield, Louise D. Nielsen, Andrew Vanderburg, Gáspár Bakos, Andrew W. Mann, Charles A. Beichman, Thomas Henning, Gregory P. Laughlin, Christophe Lovis, Todd J. Henry, David Latham, Avi Shporer, Rachel A. Matson, Steve B. Howell, Jon M Jenkins, Erica J. Gonzales, Jessie Christiansen, Joshua N. Winn, Jeffrey C Smith, Howard M. Relles, Peter Tenenbaum, Jason Dittmann, François Bouchy, David Osip, Vincent Suc, Rafael Brahm, Daniel Bayliss, Carl Ziegler, Paula Sarkis, Maxime Marmier, Kari Haworth, Andrei Avrelʹevich Tokovinin, Songhu Wang, Leonardo A. Paredes, Néstor Espinoza Perez, Bryndis Cruz, James Hodari-Sadiki
- 2019-09-01Juan Carlos Morales, Alexander J. Mustill, Ignasi Ribas, Melvyn Davies, Florian F Bauer, Enrique Herrero, Eloy Rodríguez, Maria Jose López-González, Cristina Rodriguez-Lopez, Víctor J. Sánchez Béjar, Lucía González Cuesta, Rafael Luque, Manuel Perger, D Baroch, Hubert Klahr, Christoph Mordasini, Guillem Anglada-Escudé, Miriam Cortés Contreras, Marina Lafarga, Evangelos Nagel, Vera Maria Passegger, Sabine Reffert, Albert Rosich, Lev Tal-Or, Trifon Trifonov, Mathias Zechmeister, Pedro J. Amado, Eike Guenther, Adrian Kaminski, David Montes, Francisco Abellan, Jesus Aceituno, Francisco José Aceituno, Francisco Javier Alonso Floriano, Matthias Ammler-Von Eiff, Belén Arroyo-Torres, David Barrado, Santiago Becerril, Zaira Berdiñas, Gilles Bergond, Remo Burn, Rocío Calvo Ortega, Jose Cano, Carlos Cardona Guillén, Jorge Carro, Nuria Casasayas Barris, Priyanka Chaturvedi, Carlos Cifuentes San Román, Josep Colomé, Stefan Czesla, Enrique Díez Alonso, Alexandre Emsenhuber, A Fernández-Martín, Birgit Fuhrmeister, David Galadí-Enríquez, Maria Luisa Garcia Vargas, Alvaro Garcia Piquer, E González-Álvarez, Jonay I. González Hernández, Rodrigo González-Peinado, Josep Guàrdia Oliveras, Ana Guijarro, Enrique De Guindos, Israel Hermelo, Dominik Hintz, Philipp Huke, Erik Johnson, Enrique De Juan Fernandez, M Kehr, Jonas Kemmer, Minjae Kim, Jonas Klüter, Alexis Klutsch, Fernando Labarga Avalos, S Lalitha, M. Lampón, Luisa María Lara, Ralf Launhardt, J-L Lizon, Nicolas Lodieu, Mauro López Del Fresno, Javier López Santiago, Hector Magan Madinabeitia, Luigi Mancini, Emilio Marfil, Julio Antonio Marín Molina, Eduardo Martin, Susana Martín-Ruiz, Héctor Martínez-Rodríguez, Christopher Marvin, Andres Moya, Vianak Naranjo, Richard Nelson, Lisa Nortmann, Grzegorz Nowak, Aviv Ofir, Javier Pascual Granado, Santos Pedraz, Ana Perez-Calpena, Ovidio Rabaza, Alejandro Ramón Ballesta, Pablo Gustavo Redondo Caicoya, Florian Rodler, Alicia Rodriguez, Silvia Sabotta, Sepideh Sadegi, Miguel Andres Sanchez Carrasco, Alejandro Sánchez-López, Jorge Sanz-Forcada, Paula Sarkis, Luis Sarmiento, Sebastian Schäfer, Martin Schlecker, Jürgen H M M Schmitt, Patrick Schöfer, Enrique Solano, Alfredo Sota, Stephan Stock, Thomas Stuber, Juan Carlos Suárez, Hugo M Tabernero, Simon Tulloch, Francesc Vilardell, Johannes Winkler, Fei Yan, María Rosa Zapatero Osorio, Anders Johansen, Rafael Rebolo López
- 2019-09-17Sara Seager, George R. Ricker, Joshua Schlieder, Ian Crossfield, David Ciardi, Néstor Espinoza Perez, Kevin I. Collins, Francisco J. Pozuelos, Louise D. Nielsen, Gáspár Bakos, Thomas Henning, Stéphane Udry, Christophe Lovis, Michaël Gillon, Jon M Jenkins, Joshua N. Winn, Jeffrey C Smith, Mark E Rose, Steve B. Howell, Chris Stockdale, François Bouchy, Erica J. Gonzales, Jesus Noel Villasenor, Maxime Marmier, Khalid Barkaoui, Elliott Horch, Rachel A. Matson, Howard M. Relles, Avi Shporer, Rafael Brahm, Paula Sarkis, Diana Kossakowski, Martin Schlecker, Emmanuel Jehin, David Osip, Vincent Suc, Waqas Bhatti, David Charbonneau
- 2019-12-23Daniel Bayliss, David J Armstrong, Louise D. Nielsen, Edward Gillen, Liam Raynard, Maximilian N Günther, Philipp Eigmüller, David R. Anderson, Janis Hagelberg, Keivan Stassun, Matthew R. Burleigh, Peter J. Wheatley, Andrew W. Mann, David Latham, Brett Addison, Richard G West, Stéphane Udry, Douglas A. Caldwell, Roland Vanderspek, Don Pollacco, James S Jenkins, Sarah L. Casewell, George R. Ricker, Jon M Jenkins, Joshua Schlieder, Joseph D. Twicken, Robert Wittenmyer, Jack S Acton, Samuel Ford McGill, Maximiliano Moyano, Rosanna H Tilbrook, José Viñes Ibarrola, Carl Ziegler, Monika Lendl, James McCormac, Claudia Belardi, François Bouchy, Alexander Chaushev, Duncan Wright, Cesar Briceno, Tom Louden, Maxime Marmier, Rafael Brahm, Steven Villanueva, Paula Sarkis, Jack Okumura, Néstor Espinoza Perez, Akshata Krishnamurthy, Nicholas Law
- 2019-11-19Néstor Espinoza Perez, Matías R. Díaz, Tansu Daylan, Jorge Lillo-Box, Louise D. Nielsen, John Kielkopf, Vardan Adibekyan, Pedro Figueira, Peter J. Wheatley, David Barrado, Nuno C. Santos, Andrew W. Mann, David Latham, Stéphane Udry, Christophe Lovis, Jon M Jenkins, George R. Ricker, Joshua N. Winn, Jack J. Lissauer, Ian Crossfield, David J Armstrong, François Bouchy, Carl Ziegler, Daniel Bayliss, Caroline Dorn, Maxime Marmier, Joseph D. Twicken, Christopher E. Henze, Rafael Brahm, Paula Sarkis, Diana Kossakowski, Martin Schlecker, Olivier Demangeon, Xavier Dumusque, Patricia Boyd, Don Pollacco, James S Jenkins, Geof Wingham, Matthew P Battley
Date
Title
Authors
Human - wd:Q59400511