Results 61 to 70 of about 628,144 (303)
A spectroscopic study of the blue stragglers in M67 [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Based on spectrophotometric observations from the Guillermo Haro Observatory (Cananea, Mexico), a study of the spectral properties of the complete sample of 24 blue straggler stars (BSs) in the old Galactic open cluster M67 (NGC 2682) is presented. All spectra, calibrated using spectral standards, were recalibrated by means of photometric magnitudes in
A. Herrero Davo +5 more
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The origins of blue stragglers and binarity in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 (abridged) We use newly available empirical binary fractions for globular clusters to carry out a direct test of the binary evolution hypothesis, and of collisional channels that involve binary stars. More specifically, using the previously reported correlation between blue straggler numbers and core mass as a benchmark, we test for correlations with ...
Alison Sills +7 more
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The Blue Straggler Population in Dwarf Galaxies [PDF]
, 2014 Chapter 6, in Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G.
Yazan Momany, Yazan Momany
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The Blue Straggler Population of the Globular Cluster M5 [PDF]
The Astrophysical Journal, 2007 By combining high-resolution HST and wide-field ground based observations, in ultraviolet and optical bands, we study the Blue Stragglers Star (BSS) population of the galactic globular cluster M5 (NGC 5904) from its very central regions up to its periphery. The BSS distribution is highly peaked in the cluster center, decreases at intermediate radii and
Michela Mapelli +8 more
openaire +6 more sources
Peculiarities in the Horizontal Branch Stars of Globular Cluster NGC 1851: Discovery of a Blue Straggler Companion to an EHB Star [PDF]
Astrophysical Journal, 2020 We present a study of far-UV (FUV) bright horizontal branch (HB) stars to understand the peculiarities seen in the HB sequence of the globular cluster NGC 1851, using ground- and space-based multiwavelength data.
Gaurav Singh +3 more
semanticscholar +1 more source
A chemical study of M67 candidate blue stragglers and evolved blue stragglers observed with APOGEE DR14 [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Within the variety of objects populating stellar clusters, blue straggler stars (BSSs) are among the most puzzling ones. BSSs are commonly found in globular clusters, but they are also known to populate open clusters of the Milky Way. Two main theoretical scenarios (collisions and mass transfer) have been suggested to explain their formation, although ...
Bertelli Motta, Clio +5 more
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The rich lack close neighbours: the dependence of blue-straggler fraction on metallicity [PDF]
, 2020 Blue straggler stars (BSS) have been identified in star clusters and in field populations in our own Milky Way galaxy and in its satellite galaxies.
R. Wyse, M. Moe, K. Kratter
semanticscholar +1 more source
The lithium abundance of M67 blue stragglers - A constraint on the blue straggler phenomenon
The Astrophysical Journal, 1991 Upper limits have been placed on the line strength of the 6707 A Li I resonance doublet in seven blue stragglers in M67. The corresponding upper limits on abundances range from log N(Li) less than about 1.3 to less than about 2.3. This result is significantly below the level of log N(Li) about 3.1 + or {minus} 0.1 found in field main-sequence stars of ...
C.J. Pritchet, J.W. Glaspey
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The blue straggler star population in NGC 6229★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We have used a combination of high-resolution Hubble Space Telescope Wide Field Planetary Camera 2 and wide-field ground-based observations in ultraviolet and optical bands to study the blue straggler star (BSS) population of the outer halo globular cluster NGC 6229 over its entire radial extent.
Barbara Lanzoni +6 more
openaire +3 more sources
Models of Individual Blue Stragglers [PDF]
, 2014 Chapter 12, in Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G.
openaire +4 more sources