Results 41 to 50 of about 499,224 (333)

Metallicities of Globular Clusters m3 and m5 from VI CCD Photometry [PDF]

Journal of Astronomy and Space Sciences, 2000
To derive the metallicities of M3 and M5, we used the shape of red giant branch, horizontal branch magnitude, and red giant branch bump on the (V - I) - V color magnitude diagrams.
Young-Jong Sohn, Hyun-Chul Lee
doaj   +2 more sources

The strange hot horizontal-branch binary star in NGC 6752

Open Astronomy, 2018
M5865 is the only so-far confirmed close binary found in the extreme horizontal branch (EHB) of a globular cluster. A detailed study has recently proposed that this object could be a close system (period P=1.61 days) comprising a EHB and a main-sequence ...
Bidin Christian Moni
doaj   +1 more source

Blue Stragglers After the Main Sequence [PDF]

, 2008
We study the post-main sequence evolution of products of collisions between main sequence stars (blue stragglers), with particular interest paid to the horizontal branch and asymptotic giant branch phases.
Alison Sills, Amanda Karakas, Beccari, Charbonnel, Dearborn, Ferraro, Ferraro, Ferraro, Frost, Hansen, Hut, Iben, John Lattanzio, Lombardi, McCarthy, Monkman, Reimers, Sandquist, Schoenberner, Sills, Sills, Sills, Straniero   +22 more
core   +1 more source

Non-variable horizontal-branch stars [PDF]

Symposium - International Astronomical Union, 1997
For 25 years our ignorance of the physical basis of this mass loss process has been the barrier to progress in understanding horizontal branch morphology. I review some recent observational and theoretical results which may be giving us clues about the nature of the mass loss process.
openaire   +1 more source

Meet the family − the catalog of known hot subdwarf stars

Open Astronomy, 2017
In preparation for the upcoming all-sky data releases of the Gaia mission, we compiled a catalog of known hot subdwarf stars and candidates drawn from the literature and yet unpublished databases.
Geier Stephan, Østensen Roy H., Nemeth Peter, Heber Ulrich, Gentile Fusillo Nicola P., Gänsicke Boris T., Telting John H., Green Elizabeth M., Schaffenroth Johannes   +8 more
doaj   +2 more sources

Can Planets Influence the Horizontal Branch Morphology? [PDF]

, 1998
As stars which have planetary systems evolve along the red giant branch and expand, they interact with the close planets. The planets deposit angular momentum and energy into the red giant stars' envelopes, both of which are likely to enhance mass loss ...
Balbus A. S., Bondi H., Ferraro F. R., Han Z., Harpaz A., Livio M., Noam Soker, Paczynski B., Walker A. R.   +8 more
core   +2 more sources

Na-O anticorrelation and horizontal branches [PDF]

Astronomy & Astrophysics, 2007
We are studying the Na-O anticorrelation in several globular clusters of different Horizontal Branch (HB) morphology in order to derive a possible relation between (primordial) chemical inhomogeneities and morphological parameters of the cluster population.
E. Carretta, A. Bragaglia, R. G. Gratton, S. Lucatello, Y. Momany   +4 more
openaire   +1 more source

Multi-objective design and optimization of squeezed branch pile based on orthogonal test

Scientific Reports, 2023
In recent years, the emergence of the squeezed branch pile has presented a new avenue for civil engineering, offering a distinctive structure and favorable mechanical characteristics.
Ziqi Wang, Cunbao Zhao, Wenyue Zhang
doaj   +1 more source

Importance of anatomically locating the infrapatellar branch of the saphenous nerve in reconstructing the anterior cruciate ligament using flexor tendons,

Revista Brasileira de Ortopedia, 2014
Objective:To describe the path of the infrapatellar branch of the saphenous nerve (IBSN) using the medial joint line, anterior tibial tuberosity (ATT), tibial collateral ligament and a horizontal line parallel to the medial joint line that passes over ...
Julio Cesar Gali, André França Resina, Gabriel Pedro, Ildefonso Angelo Mora Neto, Marco Antonio Pires Almagro, Phelipe Augusto Cintra da Silva, Edie Benedito Caetano   +6 more
doaj   +1 more source

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, Alfred Rosenberg, Bedin L. R., Busso G., Cassisi S., Macarena Garcia‐Marin, Moehler S., Sweigart A. V.   +7 more
core   +1 more source