Results 41 to 50 of about 76,246 (270)

Investigating Transit Timing Variations in the Ultrashort Period Exoplanet WASP-19b

The Astronomical Journal
In this study, we present a comprehensive analysis of transit timing variations (TTVs) in the ultrashort-period gas giant WASP-19b, which orbits a G-type main-sequence star.
Shraddha Biswas, Ing-Guey Jiang, Li-Chin Yeh, Hsin-Min Liu, Kaviya Parthasarathy, Devesh P. Sariya, D. Bisht, Mohit Singh Bisht, A. Raj   +8 more
doaj   +1 more source

TASTE IV. Refining ephemeris and orbital parameters for HAT-P-20b and WASP-1b [PDF]

, 2014
We present four new light curves of transiting exoplanets WASP-1b and HAT-P-20b, observed within the TASTE (The Asiago Search for Transit timing variations of Exoplanets) project.
Bedin, L. R., Borsato, L., Cunial, A., Damasso, M., Granata, V., Malavolta, L., Nascimbeni, V., Piotto, G.   +7 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Transit Timing and Duration Variations for the Discovery and Characterization of Exoplanets

, 2017
Transiting exoplanets in multi-planet systems have non-Keplerian orbits which can cause the times and durations of transits to vary. The theory and observations of transit timing variations (TTV) and transit duration variations (TDV) are reviewed.
A Pál, A Wolszczan, AR Dobrovolskis, BT Montet, BT Montet, C Beichman, C Sterken, C Wilson, D Jontof-Hutter, D Nesvorný, D Nesvorný, D Nesvorný, D Nesvorný, D Nesvorný, D Nesvorný, D Nesvorný, D Ragozzine, DM Kipping, DV Martin, E Agol, E Agol, EJ Lee, EM Price, G Laughlin, GM Szabó, GR Ricker, H Rauer, J Eastman, J Miralda-Escudé, J Schneider, JA Carter, JA Carter, JA Carter, JC Adams, JC Becker, JH Steffen, JH Steffen, JH Steffen, JJ Lissauer, JM Almenara, JM Almenara, JS Heyl, JW Barnes, JW Xie, K Masuda, KM Deck, KM Deck, LR Doyle, M Gillon, M Oshagh, MJ Holman, MJ Holman, NP Gibson, P Ioannidis, P Mayer, RI Dawson, RK Ulrich, S Ginzburg, S Hadden, S Hadden, S Hadden, S Meschiari, S Seager, SCC Barros, SM Mills, SM Mills, SM Mills, T Borkovits, UJ Verrier Le, VB Kostov, VB Kostov, WD Cochran, WF Welsh, Y Lithwick   +73 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Metrics for Optimizing Searches for Orbital Precession and Tidal Decay via Transit Timing and Occultation Timing

The Astronomical Journal
Short-period exoplanets may exhibit orbital precession driven by several different processes, including tidal interactions with their host stars and secular interactions with additional planets.
Brian Jackson, Elisabeth R. Adams, Rachel M. Huchmala, Malia Barker, Marvin Rothmeier, Jeffrey P. Morgenthaler, Amanda A. Sickafoose   +6 more
doaj   +1 more source

How to determine an exomoon's sense of orbital motion [PDF]

, 2014
We present two methods to determine an exomoon's sense of orbital motion (SOM), one with respect to the planet's circumstellar orbit and one with respect to the planetary rotation. Our simulations show that the required measurements will be possible with
Albrecht, Simon, Heller, René
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

A map of the day-night contrast of the extrasolar planet HD 189733b [PDF]

, 2007
"Hot Jupiter" extrasolar planets are expected to be tidally locked because they are close (
Agol, Eric, Allen, Lori E., Charbonneau, David, Cooper, Curtis S., Cowan, Nicolas B., Fortney, Jonathan J., Knutson, Heather A., Megeath, S. Thomas, Showman, Adam P.   +8 more
core   +2 more sources

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

FEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson, Mackenzie K Herroon, Shane Mecca, Laimar C Garmo, Jacob Lindquist, Shrila Rajendran, Steve M. Patrick, Izabela Podgorski   +7 more
wiley   +1 more source