Results 31 to 40 of about 5,213,633 (303)

Stellar populations in HII galaxies [PDF]

Proceedings of the International Astronomical Union, 2004
We analyse the stellar content of a large number of HII galaxies from the continua and absorption features of their spectra using population synthesis methods, in order to gain information about the star formation histories of these objects. We find that all galaxies of our sample contain an old stellar population (>= 1 Gyr) that dominates the ...
Westera, P., Cuisinier, F., Telles, E., Kehrig, C.   +3 more
openaire   +3 more sources

Stellar libraries for Gaia [PDF]

, 2011
Gaia will observe up to a billion stellar sources. Automated algorithms are under development to derive the atmospheric parameters of all observed spectra, from low resolution optical spectra alone or in synergy with high resolution spectra in the near ...
R Tantalo, Edvardsson, Bengt,, Josselin, E., B Edvardsson, E Josselin, Korn, A. J., O Kochukhov, Thévenin, Frédéric, Kochukhov, Oleg, Korn, Andreas,, Allard, F., Sordo, Rosanna, J Zorec, P de Laverny, Schweitzer, A., A Schweitzer, K Smith, Brott, I., Kochukhov, Oleg,, Smith, K., C Liu, Vallenari, Antonella, F Allard, R Sordo, Frémat, Yves, I Brott, Edvardsson, B., Zorec, Juan, Lanzafame, A. C., J -C Bouret, Liu, C., F Thévenin, Sordo, R., F Martins, R Blomme, Bouret, J. -C, Tantalo, R., C Martayan, A Lanzafame, Heber, U., Martins, Fabrice, Plez, Bertrand, Y Frémat, Bouret, J.-C., Martayan, Christophe, B Plez, A Korn, Blomme, Ronny, de Laverny, P., U Heber, A Vallenari, Lanzafame A., Sordo R., Edvardsson B., Josselin E., Zorec J., Schweitzer A., Brott I., Martins F., de Laverny P., Frémat, Y., Allard F., Tantalo R., Heber U., Vallenari A., Korn A., Thévenin, F., Bouret J.-C., Bouret, J. -C., Liu C., Plez B., Thévenin F., Frémat Y., Smith K., Martayan C., Kochukhov O., Blomme R., Bouret J. C., LANZAFAME, Alessandro Carmelo, Martayan, C., Zorec, J., Korn, A., Vallenari, A., Plez, B., Blomme, R., Lanzafame, A., Martins, F., Kochukhov, O.   +87 more
core   +1 more source

Constraining planet structure from stellar chemistry : the cases of CoRoT-7, Kepler-10, and Kepler-93 [PDF]

, 2015
This work was supported by Fundação para a Ciência e a Tecnologia (FCT) through the research grant UID/FIS/04434/2013. P.F., N.C.S., and S.G.S. also acknowledge support from FCT through Investigador FCT contracts of reference IF/01037/2013, IF/00169/2012,
Mortier, Annelies, A. Mortier, Dorn, Caroline, Sousa, S. G., Santos, N. C., Delgado-Mena, E., Benz, Willy, Mordasini, Christoph, Pepe, F., Mortier, A.; id_orcid, Mortier, A., F. Pepe, Figueira, P., Adibekyan, V., Udry, S., C. Mordasini, A. Santerne, Santerne, A., W. Benz, Dorn, C., V. Adibekyan, E. Delgado-Mena, Buchhave, L., S. G. Sousa, Mordasini, C., S. Udry, N. C. Santos, Buchhave, Lars A., Benz, W., P. Figueira, L. Buchhave, C. Dorn   +31 more
core   +3 more sources

The AIMSS Project – III. The stellar populations of compact stellar systems [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
In recent years, a growing zoo of compact stellar systems (CSSs) have been found whose physical properties (mass, size, velocity dispersion) place them between classical globular clusters (GCs) and true galaxies, leading to debates about their nature. Here we present results using a so far underutilized discriminant, their stellar population properties.
Janz, J, Norris, MA, Forbes, DA, Huxor, A, Romanowsky, AJ, Frank, MJ, Escudero, CG, Faifer, FR, Forte, JC, Kannappan, SJ, Marason, C, Brodie, JP, Strader, J, Thompson, BR   +13 more
openaire   +7 more sources

Streams on FIRE: Populations of Detectable Stellar Streams in the Milky Way and FIRE

The Astrophysical Journal, 2023
We present the first detailed comparison of populations of dwarf galaxy stellar streams in cosmological simulations and the Milky Way. In particular, we compare streams identified around 13 Milky Way analogs in the FIRE-2 simulations to streams observed ...
Nora Shipp, Nondh Panithanpaisal, Lina Necib, Robyn Sanderson, Denis Erkal, Ting S. Li, Isaiah B. Santistevan, Andrew Wetzel, Lara R. Cullinane, Alexander P. Ji, Sergey E. Koposov, Kyler Kuehn, Geraint F. Lewis, Andrew B. Pace, Daniel B. Zucker, Joss Bland-Hawthorn, Emily C. Cunningham, Stacy Y. Kim, Sophia Lilleengen, Jorge Moreno, Sanjib Sharma, S Collaboration & FIRE Collaboration   +21 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld, Scott H. Maurer, Michelle D. Watkinson, John Nury, Elise Barberis, Molly C. Mack   +5 more
wiley   +1 more source

STELLAR POPULATION VARIATIONS IN THE MILKY WAY's STELLAR HALO [PDF]

The Astronomical Journal, 2010
If the stellar halos of disk galaxies are built up from the disruption of dwarf galaxies, models predict highly structured variations in the stellar populations within these halos. We test this prediction by studying the ratio of blue horizontal branch stars (BHB stars; more abundant in old, metal-poor populations) to main-sequence turn-off stars (MSTO
Bell, Eric F., Xue, Xiang Xiang, Rix, Hans-Walter, Ruhland, Christine, Hogg, David W.   +4 more
openaire   +2 more sources

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine, Hallie Coltin, Sylvia Cheng, Lucie Lafay‐Cousin, Vanan Issai Magimairajan, Craig Erker, Stéphanie Vairy, Lynette Bowes, Adam Fleming, Donna Johnston, Sarah McKillop, Roona Sinha, Julie Bennett, Christina Coleman, Laura Wheaton, Shayna Zelcer, Samuele Renzi, Thai Hoa Tran   +17 more
wiley   +1 more source

Galaxy modelling through stellar population synthesis

EPJ Web of Conferences, 2012
In recent years, models of the Galaxy based on the spirit of population synthesis have considerably helped to improve our knowledge on the Galaxy and its formation scenario.
Robin A.C.
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani, Rachel K. Peterson, Avani D. Rao, Laurie J. McKenzie, Ahmed Magdy Elmotayam, Leslie Chang, Michael Roth, Susan L. McGovern   +7 more
wiley   +1 more source