Results 41 to 50 of about 485,760 (336)

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., Iannicola G., BONO, GIUSEPPE, Zoccali M., Cassisi S., BUONANNO, ROBERTO   +5 more
openaire   +6 more sources

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, Asplund, Benedict, Bono, Bono, Bono, Brocato, Brocato, Buzzoni, Caputo, Caputo, Caputo, Caputo, Caputo, Cassisi, Cassisi, Cassisi, Castellani, Castelli, Catelan, Dall'Ora, Demarque, F. Caputo, Ferraro, Harris, Iben, Iglesias, Kovács, Kraft, Krishna-Swamy, Lee, Longmore, Longmore, M. Castellani, Madore, Marconi, Mateo, Rood, S. Cassisi, Salaris, Sandquist, Straniero, V. Castellani, van den Bergh, Zoccali   +44 more
core   +2 more sources

The distance to the Fornax Dwarf Spheroidal Galaxy [PDF]

, 2007
A large multicolour, wide-field photometric database of the Fornax dwarf spheroidal galaxy has been analysed using three different methods to provide revised distance estimates based on stellar populations in different age intervals.
Aaronson, Aaronson, Azzopardi, Battaglia, Bellazzini, Bellazzini, Bersier, Bersier, Buonanno, Buonanno, Cacciari, Carretta, Carretta, Cole, Da Costa, Demers, E. V. Held, Ferraro, Ferraro, Girardi, Girardi, Greco, Greco, Gullieuszik, I. Saviane, L. Rizzi, Landolt, Lee, M. Gullieuszik, Makarov, Méndez, Paczynski, Pietrzyński, Pietrzyński, Pont, R. B. Tully, Rizzi, Rizzi, Rocha-Pinto, Rocha-Pinto, Sakai, Saviane, Schlegel, Stanek, Stetson, Stetson, Stone, Tolstoy, Tolstoy, Udalski, Udalski, Udalski, Udalski, Udalski, Valdes, Zinn   +55 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, Mun-Suk Chun, Yong-Ik Byun   +2 more
doaj  

Anatomical landmarks for tibial nerve motor branches in the management of spastic equinovarus foot after stroke: An ultrasonographic study

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, Elena Chemello, Elisabetta Verzini, Federico Ferrari, Annalisa Brugnera, Marialuisa Gandolfi, Leopold Saltuari, Angela Modenese, Nicola Smania   +8 more
doaj   +1 more source

Effects of tidally enhanced stellar wind on the horizontal branch morphology of globular clusters

, 2012
Metallicity is the first parameter to influence the horizontal branch (HB) morphology of globular clusters (GCs). It has been found, however, that some other parameters may also play an important role in affecting the morphology.
Chen, Xue-Fei, Han, Z., Lei, Zhen-Xin, Zhang, Feng-Hui   +3 more
core   +1 more source

Simulation Study on Key Controlling Factors of Productivity of Multi-Branch Horizontal Wells for CBM: A Case Study of Zhina Coalfield, Guizhou, China

Energies
The multi-branch horizontal well for coalbed methane (CBM) is a core technical means to achieve efficient CBM extraction, and its productivity is jointly restricted by geological and engineering factors.
Shaolei Wang, Yu Xiong, Huazhou Huang, Shiliang Zhu, Junhui Zhu, Xiaozhi Zhou   +5 more
doaj   +1 more source

Analysis on economic benefits of coalbed methane drilling technologies

Petroleum Exploration and Development, 2009
The coalbed methane (CBM) development activities in China are concentrated in the regions with low-permeability coal reservoirs. There are two kinds of drilling technologies: one is the conventional vertical well technology, the other is multi-branch ...
Luo Dongkun, Chu Wangtao, Wu Xiaodong, Li Weichao   +3 more
doaj   +1 more source

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, Noam Soker, Sonja Schuh, Horst Drechsel, Ulrich Heber   +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, Josefina Montalbán, Andrea Miglio, Mathieu Vrard, Giada Casali, Amalie Stokholm, Marco Tailo, Warrick H. Ball, Walter E. van Rossem, Marica Valentini   +9 more
openaire   +3 more sources