Results 111 to 120 of about 2,275,942 (365)

Metallicity of Globular Cluster M13 from VI CCD Photometry [PDF]

Journal of Astronomy and Space Sciences, 2000
From the VI images of M13, obtained by using 2K CCD camera and the BOAO 1.8m telescope, we derive the (V-I)-V CMD of M13. From the shapes of red giant branch, the magnitude of horizontal branch, and the giant branch bump on the constructed CMD, we ...
Young-Jong Sohn
doaj  

Multiple stellar populations in the Galactic globular cluster NGC 6752

, 2009
We have carried out high-precision photometry on a large number of archival HST images of the Galactic globular cluster NGC 6752, to search for signs of multiple stellar populations. We find a broadened main sequence, and demonstrate that this broadening
A. F. Marino, A. P. Milone, Anderson, Anderson, Anderson, Anderson, Bedin, Bedin, Cassisi, D'Antona, G. Piotto, I. R. King, J. Anderson, Kroupa, L. Malavolta, L. R. Bedin, Mackey, Milone, Milone, Momany, Norris, Pancino, Piotto, Piotto, Piotto, Renzini, Rubenstein, S. Villanova, Valdes, Ventura, Villanova, Y. Momany, Yong, Yong, Yong   +34 more
core   +1 more source

HST observations of the cometary blue compact dwarf galaxy UGC 4483: a relatively young galaxy? [PDF]

, 2001
We present V and I photometry of the resolved stars in the cometary blue compact dwarf galaxy UGC 4483 using Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) images. The resulting I vs.
Bertelli G., Legrand F., Noeske K. G., Pilyugin L. S., Roy J.-R., Tantalo R., Tikhonov N. A., Trinh X. Thuan, Yuri I. Izotov   +8 more
core   +2 more sources

Optical Control of the Thermal Conductivity in BaTiO3

Advanced Functional Materials, EarlyView.
Light‐driven manipulation of thermal conductivity in archetypal ferroelectric, BaTiO3, offers a novel and effective approach for the dynamical control of the heat flux, with potential applications in thermal management and phonon‐based logic. Abstract Achieving dynamic control over thermal conductivity remains a formidable challenge in condensed matter
Claudio Cazorla, Carlos Escorihuela‐Sayalero, Jesús Carrete, Jorge Íñiguez‐González, Riccardo Rurali   +4 more
wiley   +1 more source

New sweet cherry cultivars in intensive plantings

International Journal of Horticultural Science, 2011
The study took place in the largest sweet cherry plantation in West Hungary. The purpose has been the identification of those varieties, which will be suitable for intense cultivation, early fruiting and excellent fruit quality, moreover, the selection ...
Z. Szabó, E. Farkas, M. Soltész, Cs. Fieszl, G. Balázs, J. Nyéki   +5 more
doaj   +1 more source

An abundance study of red-giant-branch stars in the Hercules dwarf spheroidal galaxy [PDF]

, 2010
Using high-resolution spectroscopy, we provide a determination of [Fe/H] and [Ca/H] for confirmed red-giant branch member stars of the Hercules dwarf spheroidal galaxy.
A. Koch, Adén, Adén, Alonso, Andrievsky, Aoki, Asplund, Belokurov, Bensby, Burris, Calamida, Calamida, Clem, Cohen, D. Adén, Dotter, E. K. Grebel, Edvardsson, Feltzing, Frebel, Frebel, Fulbright, Fulbright, Geisler, Gilmore, Gratton, Gratton, Gratton, Grebel, Grevesse, Gustafsson, Hanson, Helmi, Ivans, Ivans, Johnson, K. Eriksson, Kirby, Kirby, Kirby, Koch, Koch, Koch, Koch, Kupka, Kupka, Lind, M. I. Wilkinson, Martin, Matteucci, McWilliam, McWilliam, McWilliam, Nissen, Norris, Pasquini, Piskunov, Prochaska, Reddy, Ryabchikova, Ryan, S. Feltzing, Sadakane, Schlegel, Schörck, Shetrone, Shetrone, Simon, Simon, Starkenburg, Stephens, Tollerud, Tolstoy, VandenBerg, Venn, Walker, Woosley, Zucker   +77 more
core   +1 more source

Low‐Loss Far‐Infrared Surface Phonon Polaritons in Suspended SrTiO3 Nanomembranes

Advanced Functional Materials, EarlyView.
The low‐loss, highly confined, and thickness‐tunable surface phonon polaritons are demonstrated in the far‐infrared regime within transferable freestanding SrTiO3 membranes, achieving high figures of merit comparable to the previous record values from the vdW materials.
Konnor Koons, Hans A. Bechtel, Javier Taboada‐Gutiérrez, Reza Ghanbari, Yueyin Wang, Stephanie N. Gilbert Corder, Alexey B. Kuzmenko, Ruijuan Xu, Yin Liu   +8 more
wiley   +1 more source

The Super Lithium-Rich Red Giant Rapid Rotator G0928+73.2600: A Case for Planet Accretion?

, 2010
We present the discovery of a super lithium-rich K giant star, G0928+73.2600. This red giant (T_eff = 4885 K and log g = 2.65) is a fast rotator with a projected rotational velocity of 8.4 km/s and an unusually high lithium abundance of A(Li) = 3.30 dex.
Alexander, Carlberg, Carney, Castilho, Charbonnel, de La Reza, de Medeiros, Denissenkov, Drake, Eggleton, Ghezzi, Gratton, Kumar, Lodders, Luck, Mandell, Palmerini, Patterson, Piskunov, Reddy, Reddy, Sackmann, Smith, Sneden   +23 more
core   +1 more source

Iridium Oxide Inverse Opal Anodes with Tailored Porosity for Efficient PEM Electrolysis

Advanced Functional Materials, EarlyView.
The synthesis of Iridium‐based Inverse Opals (Ir‐IO) is reported as electrocatalyst for Proton exchange membrane water electrolysis (PEM‐WE). Using the developed protocol it produces highly porous materials consisting either of metallic, oxidic Iridium or a combination thereof with large surface areas.
Sebastian Möhle, Matthias Kroschel, Peter Strasser   +2 more
wiley   +1 more source

Pulsating red giant stars in eccentric binary systems discovered fromKeplerspace based photometry

, 2017
Context. The unparalleled photometric data obtained by NASA’s Kepler Space Telescope has led to improved understanding of red giant stars and binary stars. Seismology allows us to constrain the properties of red giants. In addition to eclipsing binaries,
P. Beck, K. Hambleton, J. Vos, T. Kallinger, S. Bloemen, A. Tkachenko, R. García, R. Østensen, C. Aerts, D. Kurtz, J. Ridder, S. Hekker, K. Pavlovski, S. Mathur, K. D. Smedt, A. Derekas, E. Corsaro, B. Mosser, H. Winckel, D. Huber, P. Degroote, G. Davies, A. Prša, J. Debosscher, Y. Elsworth, P. Németh, L. Siess, V. Schmid, P. Pápics, B. D. Vries, A. J. Marle, P. Marcos-Arenal, A. Lobel   +32 more
semanticscholar   +1 more source