Results 111 to 120 of about 173,796,379 (301)

Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars [PDF]

, 2017
We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic Optical Telescope. We provide spectral types, atmospheric parameters and chemical abundances for 50 stars.
S. J. Murphy, J. M. Lykke, G. Michalska, M. Polińska, Lykke, Julie Maria, B. Smalley, Triviño Hage, A., A. Triviño Hage, Smalley, B., E. Niemczura, K. Uytterhoeven, Uytterhoeven, K., Michalska, G., Polińska, M., J. Jessen-Hansen, Kołaczkowski, Z., Kolaczkowski, Z., Jessen-Hansen, J., Z. Kołaczkowski, Niemczura, E., Murphy, S. J., Lykke, J. M., Smalley   +22 more
core   +1 more source

OO Leo: An Active Contact Binary with Possible Solar-like Differential Rotation

The Astrophysical Journal
With Transiting Exoplanet Survey Satellite (TESS) high-precision photometry and Large Sky Area Multi-object Fiber Spectroscopic Telescope medium-resolution spectra, we present the first light and radial velocity curve analyses for the eclipsing binary OO
Zi-Bin Meng, Pei-Ru Wu, Yun-Xia Yu, Ke Hu, Fu-Yuan Xiang   +4 more
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Spectroscopic determination of the fundamental parameters of 66 B-type stars in the field-of-view of the CoRoT satellite

, 2016
Aims. We determine the fundamental parameters of a sample of B stars with apparent visual magnitudes brighter than 8 in the field-of-view of the CoRoT space mission, from high-resolution spectroscopy. Methods.
Decin, L., Aerts, C., Morel, T., Briquet, M., Lefever, K., Puls, J.   +5 more
core   +1 more source

Physical parameters of IPHAS-selected classical Be stars [PDF]

, 2016
We present a semi-automatic procedure to obtain fundamental physical parameters and distances of classical Be (CBe) stars, based on the Barbier-Chalonge-Divan (BCD) spectrophotometric system.
Drew, J. E., J. Zorec, J. Fabregat, J. E. Drew, Raddi, R., Steeghs, D., Zorec, J., J. J. Drake, D. Steeghs, Wright, N. J., N. J. Wright, Gkouvelis, L., L. Gkouvelis, R. Raddi, Drake, J. J., Fabregat, J.   +15 more
core   +1 more source

An Extremely Hot Pulsating Prewhite Dwarf from OGLE

The Astronomical Journal
We show that the blue 18.3 minutes variable object discovered in the Galactic disk by the OGLE-III survey and named OGLE-GD-WD-0001 is a pulsating prewhite dwarf of PG 1159 spectral type.
Paweł Pietrukowicz, Klaus Werner, Mateusz J. Mróz, Milena Ratajczak   +3 more
doaj   +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

What can magnetic early B-type stars tell us about early B-type stars in general?

, 2016
Some magnetic early B-type stars display Hα emission originating in their Centrifugal Magnetospheres (CMs). To determine the rotational and magnetic properties necessary for the onset of emission, we analyzed a large spectropolarimetric dataset for a ...
Grunhut, Jason, Wade, Gregg,, Alecian, Evelyne,, Jason Grunhut, Evelyne Alecian, Neiner, Coralie,, Petit, Veronique,, Gregg Wade, Rivinius, Thomas,, Wade, Gregg, null null, Neiner, Coralie, Grunhut, Jason,, Coralie Neiner, Alecian, Evelyne, Matthew Shultz, Thomas Rivinius, Rivinius, Thomas, Véronique Petit, Shultz, Matthew,, Binamics Collaboration, ., Shultz, Matthew E., Petit, Veronique   +22 more
core   +1 more source

Stars in other universes: stellar structure with different fundamental constants [PDF]

, 2008
"Motivated by the possible existence of other universes, with possible variations in the laws of physics, this paper explores the parameter space of fundamental constants that allows for the existence of stars.
Adams, Fred C.
core   +1 more source

Fundamental parameters of Be stars located in the seismology fields of COROT

, 2005
25 pages, 9 figures, Accepted for publication in A&AIn preparation for the COROT space mission, we determined the fundamental parameters (spectral type, temperature, gravity, vsini) of the Be stars observable by COROT in its seismology fields (64 Be ...
Neiner, Coralie, Zorec, Jean, Fremat, Yves, Y., Renan de Medeiros, Jose, Hubert, Anne-Marie, Janot-Pacheco, Eduardo, Floquet, Michelle   +6 more
core   +1 more source