Buscar
Mostrando ítems 261-270 de 297
Signatures of hadronic cosmic rays in starbursts? : high-energy photons and neutrinos from NGC 253
(IOP Publishing, 2003-12)
We show that it appears possible for starburst galaxies, like the nearby NGC 253, recently identified as a TeV source by the CANGAROO collaboration, to emit a significant amount of high-energy γ-rays and neutrinos through ...
Not an open cluster after all: the NGC 6863 asterism in Aquila
(2010)
Shortly after birth, open clusters start dissolving; gradually losing stars into the surrounding star field. The time scale for complete disintegration depends both on their initial membership and location within the Galaxy. ...
Estudio químico del cúmulo globular NGC-5927 Chemical study of the globular cluster NGC-5927
(Universidad de Concepción.Facultad de Ciencias Físicas y Matemáticas, 2017)
Globular Clusters (GCs) are natural laboratories where stellar and chemical evolution can be studied in detail. In addition, their chemical patterns and kinematics can tell us which Galactic structure (Disk, Bulge, Halo ...
The ultraviolet morphology of evolved populations
(2012)
Semicontinuous seeded emulsion copolymerizations, using 5 different types of feeding profiles of comonomers (styrene/butyl acrylate, S/BA) were carried out, to vary in a gradual manner the composition of the copolymer ...
Herschel FIR counterparts of selected Lyα emitters at z ~ 2.2. Fast evolution since z ~ 3 or missed obscured AGNs?
(2010)
Lyα emitters (LAEs) are seen everywhere in the redshift domain from local to z ~ 7. Far-infrared (FIR) counterparts of LAEs at different epochs could provide direct clues on dust content, extinction, and spectral energy ...
Diffuse intracluster light at intermediate redshifts: intracluster light observations in an X-ray cluster at z= 0.29
(2011)
The diffuse intracluster light (ICL) contains a significant fraction of the total stellar mass in clusters of galaxies, and contributes in roughly equal proportion as the hot intra-cluster medium (ICM) to the total baryon ...
Integrated spectral study of small angular diameter galactic open clusters
(Elsevier Science, 2017-10)
This paper presents flux-calibrated integrated spectra obtained at Complejo Astronómico El Leoncito (CASLEO, Argentina) for a sample of 9 Galactic open clusters of small angular diameter. The spectra cover the optical range ...