Results 61 to 70 of about 3,207 (171)

Stellar Populations and Variable Stars in the Core of the Globular Cluster M5 [PDF]

, 1997
We report the discovery of a variable blue straggler in the core of the globular cluster M5, based on a 12-hour long series of images obtained with the Planetary Camera aboard the Hubble Space Telescope.
Buonanno R., Kadla Z. I., Kravtsov V. V., Laurent Drissen, Michael M. Shara, Reid N., Yan L.   +6 more
core   +2 more sources

Field Blue Stragglers and Related Mass Transfer Issues

, 2014
This chapter contains my impressions and perspectives about the current state of knowledge about field blue stragglers (FBS) stars, drawn from an extensive literature that I searched. I conclude my review of issues that attend FBS and mass transfer, by a
A. Buzzoni, A. D. Vanture, A. Duquennoy, A. F. Marino, A. F. Marino, A. G. D. Philip, A. J. Horton, A. Jorissen, A. M. Boesgaard, A. M. Boesgaard, A. Manduca, A. R. Sandage, A. R. Sandage, A. Tokovinin, A. W. Rodgers, A. W. Rodgers, B. Paczynski, B. Tian, B. W. Bopp, B. W. Carney, B. W. Carney, B. Yanny, C. Flynn, C. J. Pritchet, C. L. Perry, C. M. Lance, C. M. Lance, D. A. VandenBergh, D. A. VandenBergh, D. Geisler, D. H. McNamara, D. W. Latham, E. Böhm-Vitense, E. Carretta, E. H. Olsen, E. H. Olsen, E. M. Green, E. Poretti, E. Sirko, F. Marchi De, F. Spite, G Michaud, G. Beccari, G. I. Mandushev, G. P. Kuiper, G. Pietrzyński, G. Piotto, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. W. Preston, G. Wallerstein, H Bondi, H. J. Newberg, H. M. J. Boffin, H. M. J. Boffin, H. Morrison, I Soszyński, I. B. Thompson, I. I. Ivans, I. King, J. A. Thorburn, J. A. Thorburn, J. E. Hesser, J. E. Norris, J. F. Sepinsky, J. F. Sepinsky, J. F. Sepinsky, J. L. Sérsic, J. Norris, J. O. Petersen, J. R. Pier, J. W. Glaspey, K. A. Venn, K. Fuhrmann, K. Fuhrmann, K. Innanen, L. A. Balona, L. Clewley, L. M. Hobbs, L. Searle, M Shetrone, M. Bolte, M. D. Shetrone, M. H. Pinsonneault, M. H. Pinsonneault, M. H. Pinsonneault, M. Livio, M. Livio, M. Mateo, M. Monelli, M. Spite, M. Zoccali, N. Sanduleak, N. Soker, O. J. Eggen, O. Struve, O. Y. Gnedin, P. B. Stetson, P. Côté, P. J. T. Leonard, P. P. Eggleton, R Kippenhahn, R. Buser, R. D. McClure, R. D. McClure, R. E. Cohen, R. E. Davies, R. J. Stancliffe, R. J. Stancliffe, R. W. Hilditch, R. Wilhelm, R. Wilhelm, S. Bisterzo, S. E. Koposov, S. G. Ryan, S. G. Ryan, S. Vauclair, S. Yi, T. A. Smecker-Hane, T. C. Beers, T. C. Beers, T. D. Kinman, T. Masseron, T. Theuns, W. H. McCrea, W. I. Clarkson, W. L. Melbourne, W. R. Brown, X.-X. Xue, Y.-W. Lee, Z. Han   +134 more
core   +1 more source

Blue straggler stars

This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N.
Wang, Chen, Ryu, Taeho
openaire   +2 more sources

UOCS XIV: Study of the Open Cluster NGC 2627 Using UVIT/AstroSat

The Astronomical Journal
We study the intermediate-age open cluster NGC 2627, located at a distance of ∼2 kpc, using UVIT/AstroSat and other archival data. Using a machine learning-based algorithm, ML-MOC, on the Gaia DR3 data, we identify 422 cluster members, including four ...
Pinapati Saketh, Anju Panthi, Kaushar Vaidya   +2 more
doaj   +1 more source

The Formation Rate of Blue Stragglers in 47 Tucanae [PDF]

, 1999
We investigate the effects of changes in the blue straggler formation rate in globular clusters on the blue straggler distribution in the color-magnitude diagram. We find that the blue straggler distribution is highly sensitive to the past formation rate.
Alison Sills, Auriere M., Charles D. Bailyn, Ferraro F., Peter D. Edmonds, Ronald L. Gilliland   +5 more
core   +3 more sources

Unveiling Bifurcated Blue Straggler Sequences in NGC 2173: Insights from Binary Evolution

The Astrophysical Journal
Identifying bifurcated blue straggler (BS) sequences in color–magnitude diagrams (CMDs) of star clusters has long been regarded as a powerful diagnostic for distinguishing different BS formation mechanisms.
Li Wang, Dengkai Jiang, Chengyuan Li, Licai Deng, Antonino P. Milone, Long Wang   +5 more
doaj   +1 more source

Photometry of the Globular Cluster NGC 5466: Red Giants and Blue Stragglers

, 2007
We present wide-field BVI photometry for about 11,500 stars in the low-metallicity cluster NGC 5466. We have detected the red giant branch bump for the first time, although it is at least 0.2 mag fainter than expected relative to the turnoff.
Eggleton P. P., Eric L. Sandquist, Ferraro F. R., Fusi Pecci F., Michael Bolte, Nassissie Fekadu, Piotto G., Zaggia S. R., Zoccali M.   +8 more
core   +1 more source

Evolution of Mass Functions of Coeval Stars through Wind Mass Loss and Binary Interactions [PDF]

, 2015
Accurate determinations of stellar mass functions and ages of stellar populations are crucial to much of astrophysics. We analyse the evolution of stellar mass functions of coeval main sequence stars including all relevant aspects of single- and binary ...
de Mink, S. E., Izzard, R. G., Langer, N., Schneider, F. R. N.   +3 more
core   +2 more sources

Beryllium in the Ultra-Lithium-Deficient,Metal-Poor Halo Dwarf, G186-26

, 2005
The vast majority of low-metal halo dwarfs show a similar amount of Li; this has been attributed to the Li that was produced in the Big Bang. However, there are nine known halo stars with T $>$ 5900 K and [Fe/H] $
Alonso A., Ann Merchant Boesgaard, Bonifacio P., Magain P., Megan C. Novicki, Noguchi K., Primas F., Primas F., Schuster W. J., Spite F., Spite M., Spite M.   +11 more
core   +2 more sources

The Evolution of Blue Stragglers Formed Via Stellar Collisions [PDF]

, 1998
We have used the results of recent smoothed particle hydrodynamic simulations of colliding stars to create models appropriate for input into a stellar evolution code.
C. J. Pritchet, Cameron A. C., Hills J. G., J. A. Ouellette, Lauzeral C., Mathys G., Mestel L., Podsiadlowski P., Tassoul M., Tout C. A., Vogt H.   +10 more
core   +3 more sources