Results 41 to 50 of about 472,116 (331)
Hot Horizontal Branch Stars: Predictions for Mass Loss [PDF]
, 2002 We predict mass-loss rates for the late evolutionary phases of low-mass stars, with special emphasis on the consequences for the morphology of the Horizontal Branch (HB).
Cassisi, Santi, Vink, Jorick S.
core +2 more sources
BV Stellar Photometry of 23 Galactic Globular Clusters [PDF]
Journal of Astronomy and Space Sciences, 1998 We report V-(B - V) CCD Color Magnitude Diagrams (CMDs) for 23 southern Galactic globular clusters. Limiting magnitudes for each cluster are between 18 and 20 magnitudes in V.
Young-Jong Sohn +2 more
doaj
Journal of Rehabilitation Medicine, 2019 Objective: To identify the anatomical landmarks of tibial motor nerve branches to the gastrocnemii, soleus and tibialis posterior muscles for selective motor nerve blocks in the management of spastic equinovarus foot.
Alessandro Picelli +8 more
doaj +1 more source
RR Lyrae variables in Galactic globular clusters: IV. Synthetic HB and RR Lyrae predictions
, 2004 We present theoretical predictions concerning horizontal branch stars in globular clusters, including RR Lyrae variables, as derived from synthetic procedures collating evolutionary and pulsational constraints.
Alexander +44 more
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On the horizontal branch of the galactic globular cluster NGC 2808 [PDF]
Astronomy & Astrophysics, 2006 We present new UV (F218W) data for stars in the central region of the Galactic globular cluster NGC2808, collected with the WFPC2 camera on board of the Hubble Space Telescope. These data together with F439W and F555W-band data and previous ground based observations provide a multifrequency coverage of the cluster stellar population extending up to a ...
Castellani V. +5 more
openaire +6 more sources
Planets around Extreme Horizontal Branch Stars [PDF]
AIP Conference Proceedings, 2011 We review three main results of our recent study: We show that a proper treatment of the tidal interaction prior to the onset of the common envelope (CE) leads to an enhance mass loss. This might increase the survivability of planets and brown dwarfs that enter a CE phase.
Ealeal Bear +4 more
openaire +6 more sources
Red horizontal branch stars: An asteroseismic perspective
Astronomy & Astrophysics, 2023 Robust age estimates of red giant stars are now possible thanks to the precise inference of their mass based on asteroseismic constraints. However, there are cases where such age estimates can be highly precise yet very inaccurate. An example is giants that have undergone mass loss or mass transfer events that have significantly altered their mass.
Massimiliano Matteuzzi +9 more
openaire +3 more sources
, 1994 We report on the first in a series of studies of the Carina dwarf spheroidal galaxy, a nearby satellite of our Galaxy. Our two major results are: 1) precise BI photometry ($\sigma_{B-I} \simlt 0.05$ for $V \simlt 22$) for 11,489 stars in the Carina field,
Hesser, J. E. +3 more
core +1 more source
Horizontal Branch Evolution and Atomic Diffusion
The Astrophysical Journal, 2007 Stellar evolution models of a 0.8 Msolar star (Y=0.2352, Z=0.0001, ?=0.3) have been calculated in detail from the zero-age main sequence to the horizontal branch, both with and without atomic diffusion. We analyze the effects of atomic diffusion on the horizontal branch models themselves, as well as on the properties of giant-branch tip stars that ...
Jacques Richer +3 more
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Horizontal branch morphology: A new photometric parametrization [PDF]
Astronomy & Astrophysics, 2019 Context. Theory and observations indicate that the distribution of stars along the horizontal branch of Galactic globular clusters mainly depends on the metal content. However, the existence of globular clusters with similar metal content and absolute age but different horizontal branch morphologies, suggests the presence of another parameter affecting
Marianna Torelli +13 more
openaire +5 more sources