Results 41 to 50 of about 254,493 (202)

Preparing for the Early eVolution Explorer: Detecting the Primordial, Transiting Exoplanet Population

The Astronomical Journal
The close-in small planet population may be formed either with hydrogen/helium-dominated envelopes or with water-rich interiors. Both scenarios reproduce the present-day planet population in mass, radius, and periods, and are difficult to differentiate ...
George Zhou, James G. Rogers, Jennifer A. Burt, Eve J. Lee, Sydney Vach, Ann Marie Cody, Mark Swain, Neal J. Turner, Andrew W. Mann, Madyson G. Barber, Eric Gaidos, Ward Howard, Laura Venuti, Damon F. Landau, Valerie Scott, Alan Didion, David Makowski, Jamie Nastal, Evgenya L. Shkolnik, Meredith A. MacGregor   +19 more
doaj   +1 more source

α‐Synuclein Forms Distinct Micelle‐Like Assemblies at Low Ionic Strengths

Advanced Science, EarlyView.
At high ionic strength, α‐synuclein forms diverse assemblies, including oligomers, fibrils, and condensates. Here, we show that at low ionic strength, α‐synuclein adopts a distinct, low‐abundance assembly state. These assemblies maintain a constant size above a critical concentration and do not coalesce, suggesting a micelle‐like organization ...
Sophie Hertel, Soumik Ray, Federica Saraceno, Giacomo Nisini, Georgia Nasi, Thomas Oliver Mason, Antonin Kunka, Effrosyni Agrimaki, Dannie Juul Olesen, Francesco Simone Ruggeri, Alexander K. Buell   +10 more
wiley   +1 more source

Exoplanet characterization by multi-observatory transit photometry with TESS and CHEOPS [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Space-based photometric surveys have discovered large numbers of planets transiting other stars, but these observe in a single band-pass and yield only the planet radius, orbital period, and transit duration. Information on the masses, compositions, and any atmospheres of these planets requires additional observations from the ground or space.
Gaidos, E., Kitzmann, Daniel, Heng, Kevin   +2 more
openaire   +2 more sources

High accuracy transit photometry of the planet OGLE-TR-113b with a new deconvolution-based method [PDF]

, 2006
peer reviewedA high accuracy photometry algorithm is needed to take full advantage of the potential of the transit method for the characterization of exoplanets, especially in deep crowded fields.
Sohy, Sandrine, F. Pont, C. Moutou, F. Bouchy, Moutou, C., Gillon, M., Bouchy, F., Courbin, F., Magain, P., Gillon, Michaël, F. Courbin, M. Gillon, Sohy, S., Magain, Pierre, P. Magain, Pont, F., S. Sohy   +16 more
core   +3 more sources

Transiting Planetary Debris near the Roche Limit of a White Dwarf on a 4.97 hr Orbit—and its Vanishing

The Astrophysical Journal
We present the discovery of deep, irregular, periodic transits toward the white dwarf ZTF J1944+4557 using follow-up time-series photometry and spectroscopy from Palomar, Keck, McDonald, Perkins, and Lowell observatories.
Joseph A. Guidry, Zachary P. Vanderbosch, J. J. Hermes, Dimitri Veras, Mark A. Hollands, Soumyadeep Bhattacharjee, Ilaria Caiazzo, Kareem El-Badry, Malia L. Kao, Lou Baya Ould Rouis, Antonio C. Rodriguez, Jan van Roestel   +11 more
doaj   +1 more source

The Breakthrough Listen Search for Intelligent Life: Detection and Characterization of Anomalous Transits in Kepler Lightcurves

The Astronomical Journal, 2023
Never before has the detection and characterization of exoplanets via transit photometry been as promising and feasible as it is now, due to the increasing breadth and sensitivity of time domain optical surveys.
Anna Zuckerman, James R. A. Davenport, Steve Croft, Andrew Siemion, Imke de Pater   +4 more
doaj   +1 more source

Decoding the Neural Circuit Underlying Context‐Cue Association in Retrieval of Morphine Reward Memory

Advanced Science, EarlyView.
Contextual cues recruit the glutamatergic vCA1–dmPFC pathway to retrieve morphine reward memory by reshaping cell‐type‐specific prefrontal microcircuit activity. Distinct regulation of PV+ and SST+ interneurons defines this hippocampal–prefrontal mechanism.
Zhifeng Shi, Guangying Li, Qian Yang, Rusun Liu, Linghan Gu, Mingmei Wang, John L. Waddington, Fuhai Ji, Xuechu Zhen   +8 more
wiley   +1 more source

Spitzer Transit and Secondary Eclipse Photometry of GJ 436b [PDF]

The Astrophysical Journal, 2007
We report the results of infrared (8 micron) transit and secondary eclipse photometry of the hot Neptune exoplanet, GJ436b using Spitzer. The nearly photon-limited precision of these data allow us to measure an improved radius for the planet, and to detect the secondary eclipse.
Deming, Drake, Harrington, Joseph, Laughlin, Gregory, Seager, Sara, Navarro, Sarah B., Bowman, William C., Horning, Karen   +6 more
openaire   +3 more sources

Photometry of exoplanetary transits at Osservatorio Polifunzionale del Chianti [PDF]

Experimental Astronomy, 2020
AbstractIn this paper we report the observations of HD189733b, Kepler-41b, Kepler-42b, GJ 436b, WASP-77ab, HAT-P-32b and EPIC 211818569 as measured at the Osservatorio Polifunzionale del Chianti, a new astro-nomical site in Italy. Commissioning observing runs have been done in order to test capabilities, systematics and limits of the system and to ...
Naponiello, L., Betti, L., Biagini, A., Focardi, M., Papini, E., Stanga, R., Trisciani, D., Agostini, M., Noce, V., Fini, L., Pace, E.   +10 more
openaire   +1 more source

Detecting false positives with PLATO using double-aperture photometry and centroid shifts

Astronomy & Astrophysics
Context. PLATO will discover exoplanets and characterize their host stars. Since photometry for most PLATO targets will be extracted on board, an efficient strategy to detect false positives (FPs) – transit-like signals not caused by planets – is needed.
Gutiérrez-Canales F., Samadi R., Birch A., Cabrera J., Damiani C., Guterman P., Paproth C., Pertenais M., Santerne A.   +8 more
doaj   +1 more source