Results 1 to 10 of about 965 (107)
Characterization of Blue and Yellow Straggler Stars of Berkeley 39
The Astronomical JournalWe characterize blue straggler stars (BSSs) and yellow straggler stars (YSSs) of the open cluster (OC) Berkeley 39 using multiwavelength observations including the Swift/Ultraviolet and Optical Telescope (UVOT). Our analysis also makes use of ultraviolet
Komal Chand +3 more
doaj +3 more sources
The incidence of magnetism in blue and yellow straggler stars
Astronomy and AstrophysicsContext. Our understanding of the generation of magnetic fields in intermediate-mass and massive OBA stars remains limited. Some theories have proposed that their magnetic fields could be a result of strong binary interactions, including stellar mergers.
S. Hubrig +3 more
exaly +3 more sources
The Astrophysical Journal, 2023 We present the first far-UV (FUV) imaging results of the intermediate-age Galactic open cluster NGC 2818 that has a planetary nebula (PN) within the field using images taken from the Ultra Violet Imaging Telescope (UVIT) aboard AstroSat.
Sharmila Rani +3 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 +5 more
core +3 more sources
High-resolution optical imaging of the core of the globular cluster M15 with FastCam [PDF]
, 2012 We present high-resolution I-band imaging of the core of the globular cluster M15 obtained at the 2.5 m Nordic Optical Telescope with FastCam, a low readout noise L3CCD based instrument. Short exposure times (30 ms) were used to record 200000 images (512
Alejandro Oscoz +33 more
core +2 more sources
The Astronomical Journal, 2014 Binary stars in open clusters are very useful targets in constraining the nucleosynthesis process. The luminosities of the stars are known because the distances of the clusters are also known, so chemical peculiarities can be linked directly to the evolutionary status of a star.
J. V. Sales Silva +5 more
openaire +1 more source
The Star Formation History of M32 [PDF]
, 2011 We use deep HST ACS/HRC observations of a field within M32 (F1) and an M31 background field (F2) to determine the star formation history (SFH) of M32 from its resolved stellar population.
Abadi +54 more
core +6 more sources
Effects of Rotationally-Induced Mixing in Compact Binary Systems with Low-Mass Secondaries and in Single Solar-Type Stars [PDF]
, 2012 Many population synthesis and stellar evolution studies have addressed the evolution of close binary systems in which the primary is a compact remnant and the secondary is filling its Roche lobe, thus triggering mass transfer.
Chatzopoulos, Emmanouil +2 more
core +2 more sources
The Age and Age Spread of the Praesepe and Hyades Clusters: a Consistent, ~800 Myr Picture from Rotating Stellar Models [PDF]
, 2015 We fit the upper main sequence of the Praesepe and Hyades open clusters using stellar models with and without rotation. When neglecting rotation, we find that no single isochrone can fit the entire upper main sequence at the clusters' spectroscopic ...
Brandt, Timothy D., Huang, Chelsea X.
core +2 more sources
The asymptotic evolution of the stellar merger V1309 Sco: a Blue Straggler in the making? [PDF]
, 2019 © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.Stellar mergers are estimated to be common events in the Galaxy.
Ferreira, Thiago +6 more
core +3 more sources