Results 41 to 50 of about 363,457 (364)

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

Prospects for the Characterization and Confirmation of Transiting Exoplanets via the Rossiter-McLaughlin Effect [PDF]

, 2006
The Rossiter-McLaughlin (RM) effect is the distortion of stellar spectral lines that occurs during eclipses or transits, due to stellar rotation. We assess the future prospects for using the RM effect to measure the alignment of planetary orbits with the
B. Scott Gaudi, Barnes J. R., Forbes G., Gould A., Joshua N. Winn, Mayor M., Pepe F., Queloz D., Schlesinger F., Udalski A., Udalski A., Udalski A., Udalski A., Welsh W. F.   +13 more
core   +2 more sources

Measuring stellar granulation during planet transits [PDF]

, 2016
Stellar activity and convection-related surface structures might cause bias in planet detection and characterization that use these transits. Surface convection simulations help to quantify the granulation signal.
A. Chiavassa, Anthony Caldas, Franck Selsis, J. Leconte, P. V. Paris, Pascal Bordé, Z. Magic, Remo Collet, Remo Collet, Martin Asplund   +9 more
semanticscholar   +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

Hypervelocity Planets and Transits Around Hypervelocity Stars [PDF]

, 2012
The disruption of a binary star system by the massive black hole at the Galactic Centre, SgrA*, can lead to the capture of one star around SgrA* and the ejection of its companion as a hypervelocity star (HVS). We consider the possibility that these stars
Aarseth, Abraham Loeb, Antonini, Bromley, Brown, Brown, Brown, Brown, Brown, Edelmann, Fuentes, Garaud, Gary A. Wegner, Ghez, Ghez, Gillessen, Gillessen, Ginsburg, Ginsburg, Gould, Hansen, Hansen, Hebb, Hellier, Hills, Hills, Hirsch, Idan Ginsburg, Jackson, Jackson, Kollmeier, Levin, Levrard, Lu, Madigan, Madigan, Matsumura, Murray, Nayakshin, O’Leary, Perets, Perets, Perets, Przybilla, Rasio, Reid, Santos, Sari, Schödel, Schödel, Sesana, Strubbe, Vauclair, Winn, Yu, Zubovas   +55 more
core   +3 more sources

Circumbinary planets - II. When transits come and go [PDF]

, 2016
Circumbinary planets are generally more likely to transit than equivalent single-star planets, but practically the geometry and orbital dynamics of circumbinary planets make the chance of observing a transit inherently time-dependent.
D. Martin
semanticscholar   +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

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

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

A Search for Additional Bodies in the GJ 1132 Planetary System from 21 Ground-based Transits and a 100-hr Spitzer Campaign [PDF]

, 2016
We present the results of a search for additional bodies in the GJ 1132 system through two methods: photometric transits and transit timing variations of GJ 1132b. We collected 21 transit observations of GJ 1132b with the MEarth-South array.
J. Dittmann, J. Irwin, D. Charbonneau, Z. Berta-Thompson, E. Newton   +4 more
semanticscholar   +1 more source