Zobrazeno 1 - 10
of 437
pro vyhledávání: '"Chaushev, A."'
Autor:
Chaushev, Alexander, Sallum, Steph, Lozi, Julien, Chilcote, Jeffrey, Groff, Tyler, Guyon, Olivier, Kasdin, N. Jeremy, Norris, Barnaby, Skemer, Andy
Publikováno v:
The Astronomical Journal (2024), 168, 70
Discovering new actively-accreting protoplanets is crucial to answering open questions about planet formation. However, identifying such planets at orbital distances where they are expected to be abundant is extremely challenging, both due to the tec
Externí odkaz:
http://arxiv.org/abs/2407.08832
Autor:
Chaushev, Alexander, Sallum, Steph, Lozi, Julien, Martinache, Frantz, Chilcote, Jeffrey, Groff, Tyler, Guyon, Olivier, Kasdin, N. Jeremy, Norris, Barnaby, Skemer, Andy
Publikováno v:
J. Astron. Telesc. Instrum. Syst. 9(2), 028004 (2023)
Kernel phase interferometry (KPI) is a data processing technique that allows for the detection of asymmetries (such as companions or disks) in high-Strehl images, close to and within the classical diffraction limit. We show that KPI can successfully
Externí odkaz:
http://arxiv.org/abs/2305.17065
Autor:
Kammerer, Jens, Cooper, Rachel A., Vandal, Thomas, Thatte, Deepashri, Martinache, Frantz, Sivaramakrishnan, Anand, Chaushev, Alexander, Stolker, Tomas, Lloyd, James P., Albert, Loïc, Doyon, René, Sallum, Steph, Perrin, Marshall D., Pueyo, Laurent, Mérand, Antoine, Gallenne, Alexandre, Greenbaum, Alexandra, Sanchez-Bermudez, Joel, Blakely, Dori, Johnstone, Doug, Volk, Kevin, Martel, Andre, Goudfrooij, Paul, Meyer, Michael R., Willott, Chris J., De Furio, Matthew, Dang, Lisa, Radica, Michael, Noirot, Gaël
Kernel phase imaging (KPI) enables the direct detection of substellar companions and circumstellar dust close to and below the classical (Rayleigh) diffraction limit. We present a kernel phase analysis of JWST NIRISS full pupil images taken during th
Externí odkaz:
http://arxiv.org/abs/2210.17528
Autor:
Lam, Kristine W. F., Csizmadia, Szilárd, Astudillo-Defru, Nicola, Bonfils, Xavier, Gandolfi, Davide, Padovan, Sebastiano, Esposito, Massimiliano, Hellier, Coel, Hirano, Teruyuki, Livingston, John, Murgas, Felipe, Smith, Alexis M. S., Collins, Karen A., Mathur, Savita, Garcia, Rafael A., Howell, Steve B., Santos, Nuno C., Dai, Fei, Ricker, George R., Vanderspek, Roland, Latham, David W., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Albrecht, Simon, Almenara, Jose M., Artigau, Etienne, Barragán, Oscar, Bouchy, François, Cabrera, Juan, Charbonneau, David, Chaturvedi, Priyanka, Chaushev, Alexander, Christiansen, Jessie L., Cochran, William D., De Meideiros, José R., Delfosse, Xavier, Díaz, Rodrigo F., Doyon, René, Eigmüller, Philipp, Figueira, Pedro, Forveille, Thierry, Fridlund, Malcolm, Gaisné, Guillaume, Goffo, Elisa, Georgieva, Iskra, Grziwa, Sascha, Guenther, Eike, Hatzes, Artie P., Johnson, Marshall C., Kabáth, Petr, Knudstrup, Emil, Korth, Judith, Lewin, Pablo, Lissauer, Jack J., Lovis, Christophe, Luque, Rafael, Melo, Claudio, Morgan, Edward H., Morris, Robert, Mayor, Michel, Narita, Norio, Osborne, Hannah L. M., Palle, Enric, Pepe, Francesco, Persson, Carina M., Quinn, Samuel N., Rauer, Heike, Redfield, Seth, Schlieder, Joshua E., Ségransan, Damien, Serrano, Luisa M., Smith, Jeffrey C., Šubjak, Ján, Twicken, Joseph D., Udry, Stéphane, Van Eylen, Vincent, Vezie, Michael
Ultra-short-period (USP) exoplanets have orbital periods shorter than one day. Precise masses and radii of USPs could provide constraints on their unknown formation and evolution processes. We report the detection and characterization of the USP plan
Externí odkaz:
http://arxiv.org/abs/2112.01309
Publikováno v:
In Cryobiology June 2024 115
Publikováno v:
A&A 675, A106 (2023)
Stellar photometric variability and instrumental effects, like cosmic ray hits, data discontinuities, data leaks, instrument aging etc. cause difficulties in the characterization of exoplanets and have an impact on the accuracy and precision of the m
Externí odkaz:
http://arxiv.org/abs/2108.11822
Autor:
Tilbrook, Rosanna H., Burleigh, Matthew R., Costes, Jean C., Gill, Samuel, Nielsen, Louise D., Vines, José I., Queloz, Didier, Hodgkin, Simon T., Worters, Hannah L., Goad, Michael R., Acton, Jack S., Henderson, Beth A., Armstrong, David J., Anderson, David R., Bayliss, Daniel, Bouchy, François, Briegal, Joshua T., Bryant, Edward M., Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Eigmüller, Philipp, Gillen, Edward, Günther, Maximilian N., Hogan, Aleisha, Jenkins, James S., Lendl, Monika, McCormac, James, Moyano, Maximiliano, Raynard, Liam, Smith, Alexis M. S., Udry, Stéphane, Watson, Christopher A., West, Richard G., Wheatley, Peter J., Breytenbach, Hannes, Sefako, Ramotholo R., Thomas, Jessymol K., Alves, Douglas R.
We report the discovery of four new hot Jupiters with the Next Generation Transit Survey (NGTS). NGTS-15b, NGTS-16b, NGTS-17b, and NGTS-18b are short-period ($P<5$d) planets orbiting G-type main sequence stars, with radii and masses between $1.10-1.3
Externí odkaz:
http://arxiv.org/abs/2103.10302
Autor:
Grieves, Nolan, Nielsen, Louise D., Vines, Jose I., Bryant, Edward M., Gill, Samuel, Bouchy, François, Lendl, Monika, Bayliss, Daniel, Eigmueller, Philipp, Segransan, Damien, Acton, Jack S., Anderson, David R., Burleigh, Matthew R., Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Gillen, Edward, Goad, Michael R., Günther, Maximilian N., Henderson, Beth A., Hogan, Aleisha, Jenkins, James S., Alves, Douglas R., Jordán, Andrés, McCormac, James, Moyano, Maximiliano, Queloz, Didier, Raynard, Liam, Seidel, Julia V., Smith, Alexis M. S., Tilbrook, Rosanna H., Udry, Stephane, West, Richard G., Wheatley, Peter J.
Publikováno v:
A&A 647, A180 (2021)
We report the discovery of the massive hot Jupiter NGTS-13b by the Next Generation Transit Survey (NGTS). The V = 12.7 host star is likely in the subgiant evolutionary phase with log g$_{*}$ = 4.04 $\pm$ 0.05, T$_{eff}$ = 5819 $\pm$ 73 K, M$_{*}$ = 1
Externí odkaz:
http://arxiv.org/abs/2101.04245
Autor:
Smith, A. M. S., Acton, J. S., Anderson, D. R., Armstrong, D. J., Bayliss, D., Belardi, C., Bouchy, F., Brahm, R., Briegal, J. T., Bryant, E. M., Burleigh, M. R., Cabrera, J., Chaushev, A., Cooke, B. F., Costes, J. C., Csizmadia, Sz., Eigmüller, Ph., Erikson, A., Gill, S., Gillen, E., Goad, M. R., Günther, M. N., Henderson, B. A., Hogan, A., Jordán, A., Lendl, M., McCormac, J., Moyano, M., Nielsen, L. D., Rauer, H., Raynard, L., Tilbrook, R. H., Turner, O., Udry, S., Vines, J. I., Watson, C. A., West, R. G., Wheatley, P. J.
Publikováno v:
A&A 646, A183 (2021)
Context: The sub-Jovian or Neptunian desert is a previously-identified region of parameter space where there is a relative dearth of intermediate-mass planets at short orbital periods. Aims: We present the discovery of a new transiting planetary syst
Externí odkaz:
http://arxiv.org/abs/2101.01470
Autor:
Jenkins, James S., Díaz, Matías R., Kurtovic, Nicolás T., Espinoza, Néstor, Vines, Jose I., Rojas, Pablo A. Peña, Brahm, Rafael, Torres, Pascal, Cortés-Zuleta, Pía, Soto, Maritza G., Lopez, Eric D., King, George W., Wheatley, Peter J., Winn, Joshua N., Ciardi, David R., Ricker, George, Vanderspek, Roland, Latham, David W., Seager, Sara, Jenkins, Jon M., Beichman, Charles A., Bieryla, Allyson, Burke, Christopher J., Christiansen, Jessie L., Henze, Christopher E., Klaus, Todd C., McCauliff, Sean, Mori, Mayuko, Narita, Norio, Nishiumi, Taku, Tamura, Motohide, de Leon, Jerome Pitogo, Quinn, Samuel N., Villaseñor, Jesus Noel, Vezie, Michael, Lissauer, Jack J., Collins, Karen A., Collins, Kevin I., Isopi, Giovanni, Mallia, Franco, Ercolino, Andrea, Petrovich, Cristobal, Jordán, Andrés, Acton, Jack S., Armstrong, David J., Bayliss, Daniel, Bouchy, François, Belardi, Claudia, Bryant, Edward M., Burleigh, Matthew R., Cabrera, Juan, Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Eigmüller, Philipp, Erikson, Anders, Foxell, Emma, Gänsicke, Boris T., Gill, Samuel, Gillen, Edward, Günther, Maximilian N., Goad, Michael R., Hooton, Matthew J., Jackman, James A. G., Louden, Tom, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D., Pollacco, Don, Queloz, Didier, Rauer, Heike, Raynard, Liam, Smith, Alexis M. S., Tilbrook, Rosanna H., Titz-Weider, Ruth, Turner, Oliver, Udry, Stéphane, Walker, Simon. R., Watson, Christopher A., West, Richard G., Palle, Enric, Ziegler, Carl, Law, Nicholas, Mann, Andrew W.
About one out of 200 Sun-like stars has a planet with an orbital period shorter than one day: an ultra-short-period planet (Sanchis-ojeda et al. 2014; Winn et al. 2018). All of the previously known ultra-short-period planets are either hot Jupiters,
Externí odkaz:
http://arxiv.org/abs/2009.12832