Results 131 to 140 of about 1,810,930 (242)

TOI-3862 b: A dense super-Neptune deep in the hot Neptune desert

Astronomy & Astrophysics
Context. The structure and evolution of close-in exoplanets are shaped by atmospheric loss and migration processes, which give rise to key population features such as the hot Neptune desert, ridge, and savanna – regions of the period-radius space whose ...
Carleo Ilaria, Castro-González Amadeo, Pallé Enric, Murgas Felipe, Nowak Grzegorz, Lacedelli Gaia, Masseron Thomas, Wong Emily W., Eggenberger Patrick, Bourrier Vincent, Jankowski Dawid, Goździewski Krzysztof, Alves Douglas R., Jenkins James S., Messina Sergio, Stassun Keivan G., Vines Jose I., Brogi Matteo, Ciardi David R., Clark Catherine A., Cochran William, Collins Karen A., Deeg Hans J., Furlan Elise, Gandolfi Davide, Geraldía González Samuel, Hatzes Artie P., Hellier Coel, Howell Steve B., Korth Judith, Lillo-Box Jorge, Livingston John H., Orell-Miquel Jaume, Persson Carina M., Redfield Seth, Safonov Boris, Baker David, Delfin Barrena Delgado Rafael, Bieryla Allyson, Boyle Andrew, Bosch-Cabot Pau, Casasayas Barris Núria, Chairetas Stavros, de Leon Jerome P., Fukuda Izuru, Fukui Akihiko, Guerra Pere, Ikuta Kai, Kawauchi Kiyoe, Knudstrup Emil, Libotte Florence, Lund Michael B., Luque Rafael, Guerrero de Escalante Eduardo Lorenzo Martín, Massey Bob, Michaels Edward J., Morello Giuseppe, Narita Norio, Parvianien Hannu, Schwarz Richard P., Shporer Avi, Stangret Monika, Watanabe Noriharu, Watkins Cristilyn N.   +63 more
doaj   +1 more source

Hepatic morphology and serum biochemical profile according to dry and rainy seasons in Pygocentrus nattereri (Characiformes: Serrasalmidae)

The Anatomical Record, EarlyView.
Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia, Sandriely F. Marcondes, Mayara S. Siqueira, Taynara R. F. Leão, Robson A. Rodrigues, Karine N. N. Farias, André L. N. Silva, Karin Virgínia Kuibida, Lilian Franco‐Belussi, Carlos E. Fernandes   +9 more
wiley   +1 more source

Large Fluctuations within 1 au in Protoplanetary Disks

The Astrophysical Journal
Protoplanetary disks are often assumed to change slowly and smoothly during planet formation. Here, we investigate the time evolution of isolated disks subject to viscosity and a disk wind. The viscosity is assumed to increase rapidly at around 900 K due
John Chambers
doaj   +1 more source

Effects of Thermodynamics on the Concurrent Accretion and Migration of Gas Giants in Protoplanetary Disks

Universe
Accretion and migration usually proceed concurrently for giant planet formation in the natal protoplanetary disks. Recent works indicate that the concurrent accretion onto a giant planet imposes significant impact on the planetary migration dynamics in ...
Hening Wu, Ya-Ping Li
doaj   +1 more source

Keeping them in their place: The ambivalent relationship between migration and development in Africa [PDF]

, 2007
Migration has moved to the centre stage of development policy after decades of waiting in the wings. For most of the last sixty years, migration has been portrayed in development circles in largely negative terms and identified as one of the problems ...
Bakewell, Oliver
core  

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Orbital Migration Through Atmospheric Mass Loss

The Astronomical Journal
Atmospheric mass loss is thought to have strongly shaped the sample of close-in exoplanets. These atmospheres should be lost isotropically, leading to no net migration on the planetary orbit.
Benjamin Hanf, William Kincaid, Hilke Schlichting, Livan Cappiello, Daniel Tamayo   +4 more
doaj   +1 more source

Kuiper Belt formation via grainy planetary migration

Monthly Notices of the Royal Astronomical Society
ABSTRACT We used N-body simulations to model the 4.5 Gyr orbital evolution of the early Kuiper Belt, incorporating a massive protoplanetary disc, the four giant planets, and 1500 primordial Pluto-class bodies (‘Plutos’) that drove Neptune’s grainy migration.
Patryk Sofia Lykawka, Jonathan Horner, Pedro Bernardinelli   +2 more
openaire   +2 more sources

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Adapting to migration as a planetary force [PDF]

The Lancet, 2015
openaire   +2 more sources