Results 121 to 130 of about 84,685 (303)

Baade’s window and APOGEE: Metallicities, ages, and chemical abundances

, 2017
International audienceContext. Baade’s window (BW) is one of the most observed Galactic bulge fields in terms of chemical abundances. Owing to its low and homogeneous interstellar absorption it is considered the perfect calibration field for Galactic ...
Hearty, F., S. R. Majewski, F. R. Hearty, Nandakumar, G.,, Garcia Perez, A. E.,, Roman-Lopes, A.,, Roman-Lopes, A., Nitschelm, C., Zasowski, G., Geisler, D.,, Schultheis, M., J. Brinkmann, Rojas-Arriagada, A.,, Holtzman, A., G. Nandakumar, Pérez, A. E. García, T. C. Beers, Hayden, M.,, Rojas Arriagada, Alvaro, Majewski, S. R., Bizyaev, D.,, Nandakumar, G., Minnitti, D., Fernandez-Tricado, J. G.,, Cohen, R., Zasowski, G.,, S. Villanova, Majewski, S. R.,, Minnitti, D.,, Maraston, C., D. Bizyaev, D. Geisler, C. Nitschelm, Beers, C., K. Cunha, A. Roman-Lopes, R. E. Cohen, Cohen, R. E.,, Cunha, K.,, Villanova, S., Fernandez-Tricado, G., Brinkmann, J., Schneider, D. P., Schneider, D., Tang, B., M. Hayden, Carrera, R.,, Tang, B.,, H. Jönsson, Jonsson, H., Geisler, D., Fernandez-Trincado, J.G., C. Allende Prieto, B. Tang, C. Maraston, Hearty, F. R.,, Bizyaev, D., Schultheis, M.,, Holtzman, J. A., Minniti, D., D. Minnitti, Carrera, R., Majewski, S., A. E. García Pérez, Nitschelm, C.,, Prieto, C. Allende, Beers, T. C., Schneider, D. P.,, García Pérez, A., Allende Prieto, C.,, Rojas-Arriagada, A., J. G. Fernandez-Tricado, D. P. Schneider, Jönsson, H.,, Brinkmann, J.,, Maraston, C.,, Beers, T. C.,, M. Schultheis, Villanova, S.,, R. Carrera, Hayden, M., Cunha, K., Holtzman, J. A.,, Cohen, R. E., G. Zasowski, Hearty, F. R., Allende Prieto, C., A. Rojas-Arriagada, J. A. Holtzman, Fernández-Trincado, J. G.   +89 more
core   +2 more sources

iSpec: Stellar atmospheric parameters and chemical abundances

, 2014
Astrophysics Source Code Library, record ascl:1409.006iSpec is an integrated software framework written in Python for the treatment and analysis of stellar spectra and abundances.
Blanco-Cuaresma, S., Soubiran, C., Jofre, P., Heiter, U.   +3 more
core   +1 more source

Rapid Chemical Enrichment by Intermittent Star Formation in GN-z11

The Astrophysical Journal Letters
We interpret the peculiar supersolar nitrogen abundance recently reported by the James Webb Space Telescope observations for GN-z11 ( z = 10.6) using our state-of-the-art chemical evolution models.
Chiaki Kobayashi, Andrea Ferrara
doaj   +1 more source

Are "realistic" model atmospheres realistic enough?

, 2010
During the latest decades the number of papers on stellar chemical abundances has increased dramatically. This is basically reflecting the very great achievements in telescope- and spectrometer-construction technology.
Gustafsson, Bengt,
core   +1 more source

Clinical performance of the urine‐based TERT promoter AbsoluteQ Digital PCR for non‐invasive detection of bladder cancer

Molecular Oncology, EarlyView.
A urine‐based digital PCR assay targeting two hotspot TERT promoter variants detected bladder cancer with high sensitivity and no false positives in this case–control cohort. The streamlined AbsoluteQ workflow outperformed Sanger sequencing and supports non‐invasive molecular testing for bladder cancer detection.
Anna Nykel, Izabela Kubiak, Lena Rutkowska, Żaneta Kasprzyk, Łukasz Kępczyński, Michał Bednarek, Dariusz Sobieraj, Jacek Wilkosz, Piotr Kania, Adam Jędrzejczyk, Bogdan Kałużewski, Agnieszka Gach, Tadeusz Kałużewski   +12 more
wiley   +1 more source

The Impact of Initial Composition on Massive Star Evolution and Nucleosynthesis

The Astrophysical Journal
We study the sensitivity of presupernova evolution and supernova nucleosynthesis yields of massive stars to variations of the initial composition. We use the solar abundances from Lodders, and compute two different sets of initial stellar compositions ...
Christopher West, Alexander Heger, Benoit Côté, Lev Serxner, Haoxuan Sun   +4 more
doaj   +1 more source

Chemical abundances of stars with brown-dwarf companions

, 2014
Context. It is well known that stars with giant planets are, on average, more metal-rich than stars without giant planets, whereas stars with detected low-mass planets do not require to be metal-rich. Aims.
J. Sahlmann, S. Udry, N. C. Santos, D. Mata Sánchez, G. Israelian, J. I. González Hernández   +5 more
core   +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

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

Chemical Doppelgangers in GALAH DR3: The Distinguishing Power of Neutron-capture Elements among Milky Way Disk Stars

The Astrophysical Journal
The observed chemical diversity of Milky Way stars places important constraints on Galactic chemical evolution and the mixing processes that operate within the interstellar medium. Recent works have found that the chemical diversity of disk stars is low.
Catherine Manea, Keith Hawkins, Melissa K. Ness, Sven Buder, Sarah L. Martell, Daniel B. Zucker   +5 more
doaj   +1 more source