Results 131 to 140 of about 1,262,170 (343)

Evolutionary models for low-mass stars and brown dwarfs: uncertainties and limits at very young ages [PDF]

, 2001
We analyse pre-Main Sequence evolutionary tracks for low mass stars with masses $m \\le 1.4 \\msol$ based on the Baraffe et al. (1998) input physics. We also extend the recent Chabrier et al.
I. Baraffe, G. Chabrier, F. Allard, P. Hauschildt   +3 more
semanticscholar   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

HAZMAT III: The UV Evolution of Mid- to Late-M Stars with GALEX

, 2018
Low-mass stars are currently the most promising targets for detecting and characterizing habitable planets in the solar neighborhood. However, the ultraviolet (UV) radiation emitted by such stars can erode and modify planetary atmospheres over time ...
Schneider, Adam C., Shkolnik, Evgenya L.
core   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source

21,864 Unresolved, Low-mass Binaries Identified via Their Overluminosity in Gaia Data Release 3 and a Catalog of 347,440 Systems within 100 pc of the Sun

The Astronomical Journal
The fundamental parameters of a low-mass star can potentially be determined from its photometry and astrometry. This is complicated by the fact that 10%–20% of low-mass stars are predicted to be equal-mass binaries.
Zachary Way, Sébastien Lépine, Jonathan Gagné, Ilija Medan   +3 more
doaj   +1 more source

TOI-3288 b and TOI-4666 b: Two gas giants transiting low-mass stars characterised by NIRPS

Astronomy & Astrophysics
Context. Gas giant planets orbiting low-mass stars (Teff ≲ 4600 K) are uncommon outcomes of planet formation. Increasing the sample of well-characterised giants around early M dwarfs will enable population-level studies of their properties, offering ...
Frensch Yolanda G. C., Bouchy François, Lo Curto Gaspare, L’Heureux Alexandrine, de Lima Gomes Roseane, Faria João, Dumusque Xavier, Malo Lison, Cointepas Marion, Srivastava Avidaan, Bonfils Xavier, Delgado-Mena Elisa, Nari Nicola, Artigau Étienne, Baron Frédérique, Barros Susana C. C., Benneke Björn, Bryan Marta, Canto Martins Bruno L., de Castro Leão Izan, Cloutier Ryan, Cook Neil J., Cowan Nicolas B., Cristo Eduardo, De Medeiros Jose R., Delfosse Xavier, Doyon René, Ehrenreich David, González Hernández Jonay I., Lafrenière David, Lovis Christophe, Melo Claudio, Mignon Lucile, Mordasini Christoph, Pepe Francesco, Rebolo Rafael, Rowe Jason, Santos Nuno C., Ségransan Damien, Suárez Mascareño Alejandro, Udry Stéphane, Valencia Diana, Wade Gregg, Al Moulla Khaled, Allart Romain, Almenara Jose M., Barkaoui Khalid, Cadieux Charles, Castro-González Amadeo, Collins Karen A., Fajardo-Acosta Sergio B., Forveille Thierry, Gan Tianjun, da Silva João Gomes, Grieves Nolan, Hobson Melissa J., Howell Steve, Lamontagne Pierrot, Messamah Lina, Nielsen Louise D., Osborn Ares, Parc Léna, Piaulet-Ghorayeb Caroline, Stassun Keivan G., Stefanov Atanas K., Striegel Stephanie, Ulmer-Moll Solène, Vaulato Valentina, Watkins Cristilyn N.   +68 more
doaj   +1 more source

Kepler Studies of Low-Mass Eclipsing Binaries I. Parameters of the Long-Period Binary KIC 6131659

, 2012
KIC 6131659 is a long-period (17.5 days) eclipsing binary discovered by the Kepler mission. We analyzed six quarters of Kepler data along with supporting ground-based photometric and spectroscopic data to obtain accurate values for the mass and radius of
Bass, Gideon, Fetherolf, Tara, Gregg, Trevor Ames, Orosz, Jerome A., Quinn, Samuel N., Wade, Richard A., Welsh, William F., Windmiller, Gur   +7 more
core   +1 more source

ANGULAR MOMENTUM TRANSPORT WITHIN EVOLVED LOW-MASS STARS [PDF]

, 2014
Asteroseismology of 1.0–2.0 M☉ red giants by the Kepler satellite has enabled the first definitive measurements of interior rotation in both first ascent red giant branch (RGB) stars and those on the helium burning clump.
M. Cantiello, C. Mankovich, L. Bildsten, J. Christensen-Dalsgaard, B. Paxton   +4 more
semanticscholar   +1 more source

Dual targeting of RET and SRC synergizes in RET fusion‐positive cancer cells

Molecular Oncology, EarlyView.
Despite the strong activity of selective RET tyrosine kinase inhibitors (TKIs), resistance of RET fusion‐positive (RET+) lung cancer and thyroid cancer frequently occurs and is mainly driven by RET‐independent bypass mechanisms. Son et al. show that SRC TKIs significantly inhibit PAK and AKT survival signaling and enhance the efficacy of RET TKIs in ...
Juhyeon Son, Lily L. Remsing Rix, Bin Fang, Eric A. Welsh, Nicole V. Bremer, Valentina Foglizzo, Paola Roa, Nickole Sigcha‐Coello, Yi Liao, Eric B. Haura, Alexander Drilon, John M. Koomen, Emiliano Cocco, Uwe Rix   +13 more
wiley   +1 more source

Variations in the Milky Way’s Stellar Mass Function at [Fe/H] < −1

The Astrophysical Journal Letters
We present the first determination of the Galactic stellar mass function (MF) for low-mass stars (0.2–0.5 M _⊙ ) at metallicities [Fe/H] ≲ −1. A sample of ∼53,000 stars was selected as metal-poor on the basis of both their halolike orbits and their ...
Jiadong Li, Hans-Walter Rix, Yuan-Sen Ting, Yu-Ting Wang, Szabolcs Mészáros, Ilija Medan, Chao Liu, Zhiqiang Yan, Peter J. Smith, Dan Qiu, Alexandre Roman-Lopes, Gregory M. Green, Danny Horta, Zachary Way, Tadafumi Matsuno, Stefano O. Souza, José G. Fernández-Trincado   +16 more
doaj   +1 more source