Results 71 to 80 of about 532,841 (292)

Warm Dusty Debris Disks and Distant Companion Stars: V488 Per and 2M1337 [PDF]

, 2014
A possible connection between the presence of large quantities of warm (T$\geq$200 K) circumstellar dust at youthful stars and the existence of wide-separation companion stars has been noted in the literature. Here we point out the existence of a distant companion star to V488 Per, a K-type member of the $\alpha$ Persei cluster with the largest known ...
arxiv   +1 more source

Predicting the Presence of Companions for Stripped-envelope Supernovae: The Case of the Broad-lined Type Ic SN 2002ap [PDF]

, 2017
Many young, massive stars are found in close binaries. Using population synthesis simulations we predict the likelihood of a companion star being present when these massive stars end their lives as core-collapse supernovae (SNe).
E. Zapartas, S. D. Mink, S. V. Dyk, O. Fox, N. Smith, K. Bostroem, A. D. Koter, A. Filippenko, R. Izzard, P. Kelly, C. Neijssel, M. Renzo, S. O. F. I. Astronomy, U. Amsterdam, Netherlands., Infrared Processing, A. Center, C. I. O. Technology., Pasadena, USA., Space Telescope Science Institute, Baltimore., S. Observatory, U. Arizona, D. Physics, U. California, Davis, I. O. Astronomy, K. Leuven, Leuven, Belgium, D. O. Astronomy, Berkeley, Cambridge, UK., S. O. Physics, Astronomy, U. Birmingham, Birmingham, Australian Astronomical Observatory, N. Ryde, Australia.   +41 more
semanticscholar   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

FEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Star formation environments and the distribution of binary separations [PDF]

, 1998
We have carried out K-band speckle observations of a sample of 114 X-ray selected weak-line T Tauri stars in the nearby Scorpius-Centaurus OB association. We find that for binary T Tauri stars closely associated to the early type stars in Upper Scorpius,
Brandner W., Brandner W., de Geus E. J., Duquennoy A., Durisen R. H., Kohler R., Neuhauser R., Rainer Köhler, Reipurth B., Wolfgang Brandner   +9 more
core   +2 more sources

TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days

The Astrophysical Journal
We have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov, S. A. Rappaport, T. Borkovits, B. P. Powell, R. Gagliano, M. Omohundro, I. B. Bíró, M. Moe, S. B. Howell, T. Mitnyan, C. A. Clark, M. H. Kristiansen, I. A. Terentev, H. M. Schwengeler, A. Pál, A. Vanderburg   +15 more
doaj   +1 more source

Refining the NaV1.7 pharmacophore of a class of venom‐derived peptide inhibitors via a combination of in silico screening and rational engineering

FEBS Letters, EarlyView.
Venom peptides have shown promise in treating pain. Our study uses computer screening to identify a peptide that targets a sodium channel (NaV1.7) linked to chronic pain. We produced the peptide in the laboratory and refined its design, advancing the search for innovative pain therapies.
Gagan Sharma, Jennifer R. Deuis, Xinying Jia, Theo Crawford, Sassan Rahnama, Eivind A. B. Undheim, Irina Vetter, Yanni K. ‐Y. Chin, Mehdi Mobli   +8 more
wiley   +1 more source

A Giant Planet Undergoing Extreme-Ultraviolet Irradiation By Its Hot Massive-Star Host [PDF]

, 2017
The amount of ultraviolet irradiation and ablation experienced by a planet depends strongly on the temperature of its host star. Of the thousands of extrasolar planets now known, only six have been found that transit hot, A-type stars (with temperatures ...
Bayliss, D., Beatty, T. G., Bieryla, A., Bozza, V., Buchhave, L. A., Collins, K. A., Colón, K. D., Crepp, J. R., Curtis, I. A., DePoy, D. L., Dumont, M. T., D’Ago, G., Eastman, J. D., Ellis, T., Esquerdo, G. A., Fukui, A., Fulton, B. J., Gaillard, C., Gaudi, B. S., Gonzales, E. J., Gould, A., Gregorio, J., Howard, A. W., Ito, A., James, D. J., Jang-Condell, H., Jensen, Eric L.N., Johnson, M. C., Joner, M. D., Kasper, D. H., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lund, M. B., Manner, M., Marshall, J. L., Matt, K., McLeod, K. K., Narita, N., Novati, S. C., Oberst, T. E., Penny, M., Pepper, J., Pogge, R. W., Reed, P. A., Relles, H., Rodriguez, J. E., Scarpetta, G., Siverd, R. J., Stassun, K. G., Stephens, D. C., Stevens, D. J., Stockdale, C., Tan, T. G., Trueblood, M., Trueblood, P., Yeigh, R. R., Zambelli, R., Zhou, G.   +59 more
core   +3 more sources

Revealing a Main-sequence Star that Consumed a Planet with JWST

The Astrophysical Journal
The subluminous red nova (SLRN) Zwicky Transient Facility (ZTF) SLRN-2020 is the most compelling direct detection of a planet being consumed by its host star, a scenario known as a planetary engulfment event. We present JWST spectroscopy of ZTF SLRN-2020
Ryan M. Lau, Jacob E. Jencson, Colette Salyk, Kishalay De, Ori D. Fox, Matthew J. Hankins, Mansi M. Kasliwal, Charles D. Keyes, Morgan Macleod, Michael E. Ressler, Sam Rose   +10 more
doaj   +1 more source

Age dependence of wind properties for solar type stars: a 3d study [PDF]

, 2016
Young and rapidly rotating stars are known for intense, dynamo generated magnetic fields. Spectropolarimetric observations of those stars in precisely aged clusters are key input for gyrochronology and magnetochronology. We use ZDI maps of several young K-type stars of similar mass and radius but with various ages and rotational periods, to perform 3D ...
arxiv   +1 more source

The power of microRNA regulation—insights into immunity and metabolism

FEBS Letters, EarlyView.
MicroRNAs are emerging as crucial regulators at the intersection of metabolism and immunity. This review examines how miRNAs coordinate glucose and lipid metabolism while simultaneously modulating T‐cell development and immune responses. Moreover, it highlights how cutting‐edge artificial intelligence applications can identify miRNA biomarkers ...
Stefania Oliveto, Nicola Manfrini, Stefano Biffo   +2 more
wiley   +1 more source