Results 51 to 60 of about 242,108 (213)

Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides

The Planetary Science Journal, 2021
We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years. We add to these ground-based, HST, and K2 transit-time measurements, and revisit an N -body dynamical analysis of the seven-planet system using ...
Eric Agol, Caroline Dorn, Simon L. Grimm, Martin Turbet, Elsa Ducrot, Laetitia Delrez, Michaël Gillon, Brice-Olivier Demory, Artem Burdanov, Khalid Barkaoui, Zouhair Benkhaldoun, Emeline Bolmont, Adam Burgasser, Sean Carey, Julien de Wit, Daniel Fabrycky, Daniel Foreman-Mackey, Jonas Haldemann, David M. Hernandez, James Ingalls, Emmanuel Jehin, Zachary Langford, Jérémy Leconte, Susan M. Lederer, Rodrigo Luger, Renu Malhotra, Victoria S. Meadows, Brett M. Morris, Francisco J. Pozuelos, Didier Queloz, Sean N. Raymond, Franck Selsis, Marko Sestovic, Amaury H. M. J. Triaud, Valerie Van Grootel   +34 more
doaj   +1 more source

Palatable‐Food–Driven Top‐Down Circuit Inhibits PVNCRF Activity to Mitigate Stress Via Peri‐PVNCRFR1 Neurons

Advanced Science, EarlyView.
Palatable food alleviates stress and prevents anxiety. This study uncovers a dedicated neural pathway: dopamine release in the PFC activates D1R neurons, whose projections to the peri‐PVN engage a population of anxiolytic CRFR1 neurons. These neurons then inhibit stress‐induced hyperactivity of PVNCRF neurons, providing a circuit‐level explanation for ...
Yuchuan Hong, Shirui Jun, Tianjiao Deng, Gaojie Shao, Dan Liu, Yi Sun, Yan Chen, Qian Xiao, Jie Shao, Sheng Wang, Tianwen Huang, Fan Yang, Jie Tu   +12 more
wiley   +1 more source

Transit-Oriented Development (TOD) and Employment

, 2011
In a white paper entitled “Transit-Oriented Development and Employment,” CTOD discusses the relationship between transit and job concentrations and explains the importance of the destination side of the trip for both transit operations and land-use ...
Center for Transit-Oriented Development
core   +2 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

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, D., Heng, K.
openaire   +2 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

Metagenomic Association Uncovers Host Genotype‐Structured Rhizobacterial Networks and Novel Taxa That Enhance Soybean Salt Tolerance

Advanced Science, EarlyView.
An STI‐guided metagenomic association framework links soybean salt‐tolerance phenotypes with rhizosphere microbiome composition and network organization in natural saline soils. The approach identifies candidate beneficial taxa, including Thalassospira xiamenensis, and provides an efficient strategy for mining stress‐protective microbes from native ...
Yu Luo, Feng‐Li Kang, Qi‐Min Li, Wei‐Cai Yang   +3 more
wiley   +1 more source

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

Entorhinal Astrocyte Transplants Restore Spatial Exploration and Alleviate Amyloid‐Beta Pathology in Alzheimer's Mice

Advanced Science, EarlyView.
Impaired MEC astrocytic Ca2+ signaling is associated with fragmented spatial exploration in AD mice. Region‐specific glial progenitor transplantation generates engrafted astrocytes that are accompanied by improved AQP4 polarization, reduced amyloid‐β‐associated pathology, attenuated neuroinflammation, preserved synaptic integrity, and ameliorated ...
Fengjuan Wu, Jihua Fan, Xiang Zhou, Zhiqi Yang, Mingyue Gong, Mingzhu Huang, Zhenlu Cai, Shaofan Yang, Teng Teng, Chuanyan Yang, Jin Li, Haoyu Wang, Shuangshuang Dai, Chunhai Chen, Xiaowei Chen, Manxia Wang, Kuan Zhang   +16 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