Results 21 to 30 of about 140,835 (316)

Time resolved spectroscopy of dust and gas from extrasolar planetesimals orbiting WD 1145+017

, 2018
Multiple long and variable transits caused by dust from possibly disintegrating asteroids were detected in light curves of WD 1145+017. We present time-resolved spectroscopic observations of this target with QUCAM CCDs mounted in the Intermediate ...
de Mooij, Ernst J. W., Gibson, Neale P., Karjalainen, Marie, Karjalainen, Raine   +3 more
core   +1 more source

TESS Spots a Super-puff: The Remarkably Low Density of TOI-1420b

The Astronomical Journal, 2023
We present the discovery of TOI-1420b, an exceptionally low-density ( ρ = 0.08 ± 0.02 g cm ^−3 ) transiting planet in a P = 6.96 days orbit around a late G-dwarf star.
Stephanie Yoshida, Shreyas Vissapragada, David W. Latham, Allyson Bieryla, Daniel P. Thorngren, Jason D. Eastman, Mercedes López-Morales, Khalid Barkaoui, Charles Beichman, Perry Berlind, Lars A. Buchave, Michael L. Calkins, David R. Ciardi, Karen A. Collins, Rosario Cosentino, Ian J. M. Crossfield, Fei Dai, Victoria DiTomasso, Nicholas Dowling, Gilbert A. Esquerdo, Raquel Forés-Toribio, Adriano Ghedina, Maria V. Goliguzova, Eli Golub, Erica J. Gonzales, Ferran Grau Horta, Jesus Higuera, Nora Hoch, Keith Horne, Steve B. Howell, Jon M. Jenkins, Jessica Klusmeyer, Didier Laloum, Jack J. Lissauer, Sarah E. Logsdon, Luca Malavolta, Rachel A. Matson, Elisabeth C. Matthews, Kim K. McLeod, Jennifer V. Medina, Jose A. Muñoz, Hugh P. Osborn, Boris Safonov, Joshua Schlieder, Michael Schmidt, Heidi Schweiker, Sara Seager, Alessandro Sozzetti, Gregor Srdoc, Guđmundur Stefánsson, Ivan A. Strakhov, Stephanie Striegel, Joel Villaseñor, Joshua N. Winn   +53 more
doaj   +1 more source

Polarization in exoplanetary systems caused by transits, grazing transits, and starspots

, 2015
We present results of numerical simulations of flux and linear polarization variations in transiting exoplanetary systems, caused by the host star disk symmetry breaking.
Berdyugina, S. V., Kostogryz, N. M., Yakobchuk, T. M.   +2 more
core   +1 more source

Transit timing, depth, and duration variation in exoplanet TrES-2?

EPJ Web of Conferences, 2011
We report on our ongoing search for timing, duration, and depth variations in the exoplanet TrES-2. In Raetz et al. (2009) we already presented ten different transits obtained at the University Observatory Jena.
Vaňko M., Tetzlaff N., Pribulla T., Adam Ch., Seeliger M., Errmann R., Ginski Ch., Hohle M.M., Berndt A., Eisenbeiss T., Roell T., Schmidt T.O.B., Mugrauer M., Maciejewski G., Raetz St., Koppenhoefer J., Raetz M., Neuhäuser R.   +17 more
doaj   +1 more source

Limits to the presence of transiting circumbinary planets in CoRoT data [PDF]

, 2016
The CoRoT mission during its flight-phase 2007-2012 delivered the light-curves for over 2000 eclipsing binaries. Data from the Kepler mission have proven the existence of several transiting circumbinary planets.
Almenara, J. M., Cabrera, J., Csizmadia, Sz., Deeg, H. J., Klagyivik, P.   +4 more
core   +2 more sources

Political transformations in the CEE post-communist countries: theoretical and metodological approaches

Історико-політичні проблеми сучасного світу, 2017
Theoretical and methodological approaches to the study of political transformations in the CEE post-communist countries have been analyzed. The author argues that democratic transits do not guarantee transition to democracy and its consolidation.
Vira Burdjak
doaj   +1 more source

Transits of Earth-Like Planets

, 2009
Transmission spectroscopy of Earth-like exoplanets is a potential tool for habitability screening. Transiting planets are present-day "Rosetta Stones" for understanding extrasolar planets because they offer the possibility to characterize giant planet ...
, Allen, Beaulieu, Bennett, Charbonneau, Charbonneau, Charbonneau, Cox, Ehrenreich, Howard, Irwin, Kaltenegger, Lisa Kaltenegger, Reid, Rivera, Rothman, Seager, Torres, Traub, Turnbull, Wesley A. Traub, Woolf, Yung   +22 more
core   +1 more source

A posteriori detection of the planetary transit of HD189733b in the Hipparcos photometry [PDF]

, 2005
Thanks to observations performed at the Haute-Provence Observatory, Bouchy et al. recently announced the detection of a 2.2-day orbital period extra-solar planet that transits the disk of its parent star, HD189733.
A. Lecavelier des Etangs, , Castellano, Charbonneau, Charbonneau, Charbonneau, Deming, G. Hébrard, Henry, Jenkins, Laughlin, Lecavelier des Etangs, Mazeh, Perryman, Robichon, Sato, Söderhjelm, Vidal-Madjar, Vidal-Madjar   +17 more
core   +1 more source

Computing Transiting Exoplanet Parameters with 1D Convolutional Neural Networks

Axioms
The transit method allows the detection and characterization of planetary systems by analyzing stellar light curves. Convolutional neural networks appear to offer a viable solution for automating these analyses.
Santiago Iglesias Álvarez, Enrique Díez Alonso, María Luisa Sánchez Rodríguez, Javier Rodríguez Rodríguez, Saúl Pérez Fernández, Francisco Javier de Cos Juez   +5 more
doaj   +1 more source

Assuring the Legacy of the CoRoT Planets

EPJ Web of Conferences, 2015
For the long-lasting impact of CoRoT’s planet findings, precise knowledge of the times of their transits is of vital importance for any future observing campaigns.
Deeg H.J., Klagyivik P., Alonso R., Hoyer S.   +3 more
doaj   +1 more source