Results 111 to 120 of about 38,924 (266)

Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS

The Astronomical Journal
M dwarfs have become increasingly important in the detection of exoplanets and the study of Earth-sized planets and their habitability. However, 20%–30% of M dwarfs have companions that can impact the formation and evolution of planetary systems.
Rachel A. Matson, Rebecca Gore, Steve B. Howell, David R. Ciardi, Jessie L. Christiansen, Catherine A. Clark, Ian J. M. Crossfield, Sergio B. Fajardo-Acosta, Rachel B. Fernandes, Elise Furlan, Emily A. Gilbert, Erica Gonzales, Kathryn V. Lester, Michael B. Lund, Elisabeth C. Matthews, Alex S. Polanski, Joshua E. Schlieder, Carl Ziegler   +17 more
doaj   +1 more source

A fast method for deriving relative small-scale magnetic field variations from high-resolution spectroscopy

Astronomy & Astrophysics
Context. Setting observational constraints on stellar magnetic fields is essential for both stellar and planetary physics. They play a key role in the formation and evolution of stars and planets, and they are responsible for spurious signals in radial ...
Cristofari Paul I., Saar Steven H., Vidotto Aline A., Bellotti Stefano   +3 more
doaj   +1 more source

CCDC80 suppresses high‐grade serous ovarian cancer migration via negative regulation of B7‐H3

Molecular Oncology, EarlyView.
PAX8 is a lineage‐specific master regulator of transcription in high‐grade serous ovarian cancer (HGSC) progression. We show for the first time that PAX8 facilitates proliferation and metastasis by repressing the cell autonomous tumor suppressor CCDC80 and inducing B7‐H3 expression.
Aya Saleh, Nitzan Medina‐Itzhaki, Milena Chekov, Eden Gal‐Swisa, Roba Gabesh‐Wahabi, Inbar Savyon, Inna Naroditsky, Hilary A. Kenny, Basem Fares, Lina Korsensky, Einav Girsh, Liron Berger, Ruth Perets   +12 more
wiley   +1 more source

The POKEMON Speckle Survey of Nearby M Dwarfs. III. The Stellar Multiplicity Rate of M Dwarfs within 15 pc

The Astronomical Journal
M dwarfs are ubiquitous in our Galaxy, and the rate at which they host stellar companions, and the properties of these companions, provide a window into the formation and evolution of the star(s), and of any planets that they may host.
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch, David R. Ciardi, Kaspar von Braun, Brian A. Skiff, Jennifer G. Winters, Michael B. Lund, Mark E. Everett, Zachary D. Hartman, Joe Llama   +10 more
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Chemical Abundances in the Metal-Poor Globular Cluster ESO 280-SC06: A Formerly Massive, Tidally Disrupted Globular Cluster

The Open Journal of Astrophysics
We present the first high-resolution abundance study of ESO 280-SC06, one of the least luminous and most metal-poor gravitationally bound Milky Way globular clusters.
Sam A Usman, Alexander P. Ji, Jandrie Rodriguez, Jeffrey D. Simpson, Sarah L. Martell, Ting S. Li, Ana Bonaca, Shivani Shah, Madeleine McKenzie   +8 more
doaj   +1 more source

The rotation of low mass stars at 30 Myr in the cluster NGC 3766. [PDF]

Proc Int Astron Union, 2019
Roquette J, Bouvier J, Moraux E, Bouy H, Irwin J, Aigrain S, Lachaume R.   +6 more
europepmc   +1 more source

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

Molecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska, Stephany Gallardo, Nur S. Zainal, Leena Arora, Matthew Ellis, Maria‐Antoinette Lopez, Judith Austine, Sai Pittla, Serena J Chee, Aiman Alzetani, Emily C Shaw, Christian H Ottensmeier, Gareth J Thomas, Christopher J Hanley   +13 more
wiley   +1 more source

Measuring the magnetic fields in the chromospheres of low-mass stars [PDF]

Nat Commun
Cang T, Petit P, Donati J, Tian H, Fu J, Li H, Bellotti S, Hu X, Ma X, Ariste AL, Xing K, Morin J, Lu H, Zong W.   +13 more
europepmc   +2 more sources

Characterizing <i>K2</i> Candidate Planetary Systems Orbiting Low-Mass Stars IV: Updated Properties for 86 Cool Dwarfs Observed During Campaigns 1-17. [PDF]

Astrophys J, 2019
Dressing CD, Hardegree-Ullman K, Schlieder JE, Newton E, Vanderburg A, Feinstein AD, Duvvuri GM, Arnold L, Bristow M, Thackeray B, Abrahams ES, Ciardi D, Crossfield I, Yu L, Martinez AO, Christiansen JL, Crepp JR, Isaacson H.   +17 more
europepmc   +1 more source