Results 41 to 50 of about 498,367 (290)
The Age of the Inner Halo Globular Cluster NGC 6652 [PDF]
, 2000 HST (V,I) photometry has been obtained for the inner halo globular cluster NGC 6652. The photometry reaches approximately 4 mag below the turn-off and includes a well populated horizontal branch.
Ata Sarajedini +10 more
core +3 more sources
The horizontal branch of the Sculptor dwarf galaxy [PDF]
Astronomy & Astrophysics, 2013 We have performed the first detailed simulation of the horizontal branch of the Sculptor dwarf spheroidal galaxy by means of synthetic modelling techniques,taking consistently into account the star formation history and metallicity evolution as determined from the main sequence and red giant branch spectroscopic observations. The only free parameter in
Salaris, Maurizio +4 more
openaire +3 more sources
Advanced Functional Materials, EarlyView.This study introduces a novel chloro boron subphthalocyanine/polymer blend OFET sensor achieving 0.005 ppb limit of detection for ammonia at room temperature and high selectivity against similar amines. An original theoretical framework is proposed to describe the sensing mechanism, relating analyte molecular volume and Lewis basicity to sensor ...
Kavinraaj Ella Elangovan +6 more
wiley +1 more source
Is mass loss along the red giant branch of globular clusters sharply peaked? The case of M3
, 2007 There is a growing evidence that several globular clusters must contain multiple stellar generations, differing in helium content. This hypothesis has helped to interpret peculiar unexplained features in their horizontal branches.
Bessell M. S. +6 more
core +1 more source
Hot Horizontal‐Branch Stars in the Galactic Bulge. I. [PDF]
The Astrophysical Journal, 1999 We report the discovery of hot horizontal branch stars in the nuclear bulge of the Milky Way. Spectra from the 2dF instrument of the Anglo-Australian Telescope allow us to confirm their membership in the bulge through radial velocities. We also review the current observational information on hot horizontal branch stars in Milky Way clusters and the ...
Peterson, Ruth C. +3 more
openaire +2 more sources
Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing
Advanced Functional Materials, EarlyView.Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu +6 more
wiley +1 more source
Spectroscopy of horizontal branch stars in Omega Centauri
, 2012 We analyze the reddening, surface helium abundance and mass of 115 horizontal branch (HB) and blue hook (BH) stars in OmegaCentauri, spanning the HB from the blue edge of the instability strip to Teff~50000K. The mean cluster reddening is E(B-V)=0.115+-0.
Bidin, C. Moni +5 more
core +1 more source
The Na-O anticorrelation in horizontal branch stars. IV. M22 [PDF]
, 2014 We obtained high-resolution spectra for 94 candidate stars belonging to the HB of M22 with FLAMES.
Bragaglia, A. +9 more
core +3 more sources
Advanced Functional Materials, EarlyView.Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De +6 more
wiley +1 more source
The peculiar horizontal branch morphology of the Galactic globular clusters NGC 6388 and NGC 6441: new insights from UV observations [PDF]
, 2007 Context. In this paper we present multiband optical and UV Hubble Space Telescope photometry of the two Galactic globular clusters NGC 6388 and NGC 6441. Aims.
Busso, G. +8 more
core