Results 51 to 60 of about 220,693 (280)

The Interplay of Stellar Evolution and Collisions in Galactic Nuclei

The Astrophysical Journal
Nuclear star clusters (NSCs) surrounding supermassive black holes (SMBHs) are among the densest stellar environments in the Universe. In these environments, collisions can shape the stellar mass function and produce exotic stellar populations.
Jaden S. Sidhu, Sanaea C. Rose, Frederic A. Rasio   +2 more
doaj   +1 more source

Asteroseismic Constraints on the Models of Hot B Subdwarfs: Convective Helium-Burning Cores

EPJ Web of Conferences, 2017
Asteroseismology of non-radial pulsations in Hot B Subdwarfs (sdB stars) offers a unique view into the interior of core-helium-burning stars. Ground-based and space-borne high precision light curves allow for the analysis of pressure and gravity mode ...
Schindler Jan-Torge, Green Elizabeth M., Arnett W. David   +2 more
doaj   +1 more source

Constraints on the Formation of M31’s Stellar Halo from the SPLASH Survey

Galaxies, 2017
The SPLASH (Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo) Survey has observed fields throughout M31’s stellar halo, dwarf satellites, and stellar disk.
Karoline Gilbert
doaj   +1 more source

Living with a Red Dwarf: X-Ray, UV, and Ca ii Activity–Age Relationships of M Dwarfs

The Astrophysical Journal, 2023
The vast majority of stars in the nearby stellar neighborhood are M dwarfs. Their low masses and luminosities result in slow rates of nuclear evolution and minimal changes to the stars’ observable properties, even along astronomical timescales.
Scott G. Engle
doaj   +1 more source

The Multiple Origin of Blue Straggler Stars: Theory vs. Observations

, 2014
In this chapter we review the various suggested channels for the formation and evolution of blue straggler stars (BSSs) in different environments and their observational predictions.
A. Hypki, A. Jorissen, A. M. Geller, A. M. Geller, A. M. Geller, A. S. Hamers, A. Tokovinin, B. W. Carney, B. W. Carney, C. Abate, D. Fabrycky, D. Raghavan, D. T. F. Weldrake, D. T. F. Weldrake, D. W. Latham, F. Antonini, F. R. Ferraro, F. R. Ferraro, H. B. Perets, H. B. Perets, H. B. Perets, H. B. Perets, J. G. Hills, J. M. Fregeau, J. M. Nemec, J. R. Hurley, L. G. Kiseleva, L. Lovisi, L. Lovisi, M. Auriere, M. B. Davies, M. L. Lidov, M. M. Shara, M. Mapelli, M. Mateo, N. Leigh, N. Leigh, P. Eggleton, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. P. Eggleton, P. P. Eggleton, R. D. Mathieu, R. D. McClure, R. Kippenhahn, R. S. Harrington, S. Chatterjee, S. M. Rucinski, T. Dermine, T. Mazeh, W. Benz, W. H. McCrea, W. H. McCrea, W. I. Clarkson, W. Landsman, X. Chen, Y. Kozai   +59 more
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

Stellar Pulsation and Evolution: A Combined Theoretical Renewal and Updated Models (SPECTRUM). I. Updating Radiative Opacities for Pulsation Models of Classical Cepheid and RR-Lyrae

The Astrophysical Journal
Pulsating stars are universally recognized as precise distance indicators and tracers of stellar populations. Their variability, combined with well-defined relationships between pulsation properties and intrinsic evolutionary parameters such as ...
Giulia De Somma, Marcella Marconi, Santi Cassisi, Roberto Molinaro   +3 more
doaj   +1 more source

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter, Jens‐Peter Schenk, Jenny Wegert, Manfred Gessler, Leo Kager, Stefan Wagenpfeil, Marina Müller, Jean‐Michel Wolff, Joerg Fuchs, Steven W. Warmann, Clemens‐Magnus Meier, Jochen Hubertus, Christian Rübe, Christian Vokuhl, Patrick Melchior, Lena Tschirner, Norbert Graf, Rhoikos Furtwängler   +17 more
wiley   +1 more source

Panchromatic fits to the Globular Cluster NGC 6366 [PDF]

, 2013
We present panchromatic isochrone fits to the color magnitude data of the globular cluster NGC 6366, based on HST ACS/WFC and SOAR photometric data. Before performing the isochrone fits, we corrected the photometric data for differential reddening and ...
Bonatto, C., Campos, Fabíola, Kepler, S. O.   +2 more
core   +1 more source

Star Hoppers: Planet Instability and Capture in Evolving Binary Systems

, 2012
Many planets are observed in stellar binary systems, and their frequency may be comparable to that of planetary systems around single stars. Binary stellar evolution in such systems influences the dynamical evolution of the resident planets.
Kratter, Kaitlin M., perets, Hagai B.
core   +1 more source