Results 71 to 80 of about 2,222,310 (369)
Discovery of Blue Hook Stars in the Massive Globular Cluster M54
, 2003 We present BV photometry centered on the globular cluster M54 (NGC 6715). The color-magnitude diagram clearly shows a blue horizontal branch extending anomalously beyond the zero age horizontal branch theoretical models.
Alejandra Recio‐Blanco +7 more
core +1 more source
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
The Na-O anticorrelation in horizontal branch stars - III. 47 Tucanae and M 5 [PDF]
, 2012 To check the impact of the multiple population scenario for globular clusters on their horizontal branch (HB), we presen t an analysis of the composition of 110 red HB (RHB) stars in 47 Tucanae and of 61 blue HB (BHB) and 30 RHB stars in M 5.
R. Gratton +12 more
semanticscholar +1 more source
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
CHEMICAL COMPOSITIONS OF THIN-DISK, HIGH-METALLICITY RED HORIZONTAL-BRANCH FIELD STARS [PDF]
, 2012 We present a detailed abundance analysis and atmospheric parameters of 76 stars from a survey to identify field Galactic red horizontal-branch (RHB) stars.
M. Afşar, C. Sneden, B. For
semanticscholar +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
core +2 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