Results 131 to 140 of about 166,438,504 (289)

A Homogeneous Catalog of Oscillating Solar-type Stars Observed by the Kepler Mission and a New Amplitude Scaling Relation Including Chromospheric Activity

The Astronomical Journal
We present a homogeneous catalog of global asteroseismic parameters and derived stellar parameters for 765 Kepler main-sequence and subgiant stars. The catalog was produced by reanalyzing all available Kepler DR25 short-cadence data using pySYD , an ...
Maryum Sayeed, Daniel Huber, Ashley Chontos, Yaguang Li   +3 more
doaj   +1 more source

Chemical composition and fundamental parameters of roAp stars

, 1998
5 pages, 2 figures (the first being in fact a table), to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schnell and J. Ziznovsky, Contrib. Astr. Obs. Skalnate Pleso Vol.
openaire   +2 more sources

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Chemical Abundances of the Bioessential Elements C, O, and S, and the Refractory Elements Fe and Ni, in Solar-type Exoplanet-hosting Stars from HARPS North and South

The Astronomical Journal
We determined atmospheric and evolutionary parameters, along with chemical abundances of C, O, S, Fe, and Ni for 290 solar-type exoplanet-hosting stars using high-resolution HARPS-North and HARPS-South spectra, and radii for 373 exoplanets using ...
Ellen Costa-Almeida, Luan Ghezzi, Katia Cunha, Verne V. Smith, Jonathan J. Fortney   +4 more
doaj   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

Absolute Calibration. IV. Use of G-type Stars as Primary Calibrators

The Astronomical Journal
We demonstrate an approach to determine spectral energy distribution (SED) templates that are accurate to the 1% level from the visible through the infrared for nearby (unextincted) solar-type stars. Our approach is based only on measurements of T _eff ,
G. H. Rieke, Everett Schlawin, Charles R. Proffitt, Christopher Willmer   +3 more
doaj   +1 more source

Symmetry in fundamental parameters of galaxies on the star-forming main sequence

Monthly Notices of the Royal Astronomical Society
ABSTRACT The Star-Forming Main Sequence (SFMS) serves as a critical framework for understanding galaxy evolution, highlighting the relationship between star formation rates (SFR) and stellar masses $M_*$ across cosmic time, for star forming galaxies.
Zhicheng He, Enci Wang, Luis C Ho, Huiyuan Wang, Yong Shi, Xu Kong, Tinggui Wang   +6 more
openaire   +2 more sources

Differential expression of cancer‐related genes supports prediction of poor response to first‐line treatments in T‐ALL pediatric patients with high minimal residual disease

Molecular Oncology, EarlyView.
In the present work, we have identified a transcriptional signature based on the differential expression of six genes (BCL2&MAST4, HSH2D&LAT2, METRN&PITPNM2) that would facilitate the early detection of T‐cell acute lymphoblastic leukemia (T‐ALL) patients prone to a poor treatment response and could be implemented at diagnosis, along with other risk ...
Antonio Lahera, Laura Vela‐Martín, Pablo Fernández‐Navarro, José Luis López‐Lorenzo, Javier Cornago, Pilar Llamas, Eduardo Pérez‐Gómez, José Luis Marín‐Rubio, Manuel Fresno, Javier Santos, José Fernández‐Piqueras, María Villa‐Morales   +11 more
wiley   +1 more source

VLTI/AMBER studies of the atmospheric structure and fundamental parameters of red giant and supergiant stars [Elektronisk resurs]

, 2015
We present recent near-IR interferometric studies of red giant and supergiant stars, which are aimed at obtaining information on the structure of the atmospheric layers and at constraining the fundamental parameters of these objects.
Arroyo-Torres, B., Wood, P. R., Wittkowski, M., Abellan, F. J., Hauschildt, P. H., Scholz, M., Chiavassa, A., Marcaide, J. M., Quirrenbach, A., Marti-Vidal, Ivan,, Freytag, B., Guirado, J. C., Fabregat, J.   +12 more
core  

Giant Planets and Eccentric Orbits are Common around Galactic Thick Disk Stars

The Astronomical Journal
Planet formation in the Galactic thick disk is expected to be inefficient—low solid reservoirs, short disk lifetimes, and harsh irradiation environments should conspire to inhibit the assembly of planetary bodies—yet, planets are there, and they are ...
Thiago Ferreira, Jhon Yana Galarza, Henrique Reggiani, Kiersten M. Boley, Isabelle Winnick, Joshua D. Simon, Johanna K. Teske, Eder Martioli, Emiliano Jofré, Verónica Loaiza-Tacuri, Yadira Gaibor, Stephen A. Shectman, R. Paul Butler, Jeffrey D. Crane, Ian B. Thompson, Allyson Bieryla, David W. Latham, Carl Ziegler   +17 more
doaj   +1 more source