Results 81 to 90 of about 96,030 (294)

X-ray observations of three young, early-type galaxies [PDF]

, 2006
Massive haloes of hot plasma exist around some, but not all elliptical galaxies. There is evidence that this is related to the age of the galaxy. In this paper, new X-ray observations are presented for three early-type galaxies that show evidence of ...
A. E. Sansom, Anders, Arnaud, Baggett, Bettoni, Bournaud, Brown, Caldwell, Chang, Cohen, Cox, D'Ercole, D. S. Davis, Daisuke, De Vaucouleurs, Dekel, Denicoló, Dickey, Diehl, Duncan A. Forbes, E. O'Sullivan, Fabbiano, Fabbiano, Fabbiano, Fabbiano, Fabian, Forbes, Fricke, Fukazawa, Georgakakis, Hau, Hibbard, Hibbard, Irwin, Jansen, Jenkins, Keel, Kim, Kraft, Mackie, Matsushita, Matsushita, Mihos, Mihos, Mihos, Nolan, O'Sullivan, O'Sullivan, O'Sullivan, O'Sullivan, O'Sullivan, Pahre, Pellegrini, Proctor, Proctor, Prugniel, R. N. Proctor, Read, Reda, Romanowsky, Sansom, Sansom, Sansom, Schweizer, Schweizer, Schweizer, Sivakoff, Sivakoff, Sparke, Temi, Terlevich, Thomas, Toft, Trager, Tully, Voges, White, Worthey, Xilouris, Xilouris   +79 more
core   +2 more sources

Stellar magnetism: empirical trends with age and rotation [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
15 pages, 7 figures.
Vidotto, A. A., Gregory, S. G., Jardine, M., Donati, J. -F., Petit, P., Morin, Julien, Folsom, C. P., Bouvier, J., Cameron, A. C., Hussain, G., Marsden, S., Waite, I. A., Fares, R., Jeffers, S., Nascimento, J. D. Do   +14 more
openaire   +6 more sources

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

Intracluster age gradients in numerous young stellar clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
The pace and pattern of star formation leading to rich young stellar clusters is quite uncertain. In this context, we analyze the spatial distribution of ages within 19 young (median t<3 Myr on the Siess et al. (2000) timescale), morphologically simple, isolated, and relatively rich stellar clusters.
K V Getman, E D Feigelson, M A Kuhn, M R Bate, P S Broos, G P Garmire   +5 more
openaire   +3 more sources

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

Using Gravity as an Age Indicator for Young Stars

The Astrophysical Journal Letters
The age of a young star is difficult to measure and yet is a fundamental property that is essential for understanding stellar evolution. Accurate age indicators across the early phases of low-mass stars are scarce and often rely on properties of the ...
Michael Connelley, Christian Flores, Bo Reipurth   +2 more
doaj   +1 more source

Impact of asteroseismology on improving stellar ages determination

, 2013
High precision photometry as performed by the CoRoT and Kepler satellites on-board instruments has allowed to detect stellar oscillations over the whole HR diagram.
Lebreton, Yveline
core   +4 more sources

A Relationship between Stellar Age and Spot Coverage [PDF]

The Astrophysical Journal, 2020
Abstract We investigate starspot distributions consistent with space-based photometry of F, G, and K stars in six stellar associations ranging in age from 10 Myr to 4 Gyr. We show that a simple light-curve statistic called the “smoothed amplitude” is proportional to stellar age as t −1/2, following a Skumanich-like spin-
openaire   +2 more sources

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song, Jonathan Baron, Carlos Chavez Perez, Sidharth Ramesh, Jane Minturn, Kavita A. Desai, Amish C. Shah, Jean M. Belasco, Kristina A. Cole, Michael J. Fisher, Phillip B. Storm, Peter M. Madsen, Goldie Kurtz, Robert A. Lustig, Christine Hill‐Kayser, Michael J. LaRiviere   +15 more
wiley   +1 more source

The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way

The Astronomical Journal
We present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology from the K2 Galactic Archaeology Program and elemental abundances from the Apache Point Galactic Evolution ...
Jack T. Warfield, Joel C. Zinn, Jessica Schonhut-Stasik, James W. Johnson, Marc H. Pinsonneault, Jennifer A. Johnson, Dennis Stello, Rachael L. Beaton, Yvonne Elsworth, Rafael A. García, Savita Mathur, Benoît Mosser, Aldo Serenelli, Jamie Tayar   +13 more
doaj   +1 more source