Results 21 to 30 of about 350 (246)

BLUE STRAGGLERS AS A MERGING PRODUCT OF LOW-MASSIVE MAIN SEQUENCE BINARIES WITH DETACHED COMPONENTS

Odessa Astronomical Publications, 2017
In the framework of magnetic braking formalism the evolutionary chain describing the sequential evolutionary transitions of the low-massive detached close binaries into "short- periodic" RS CVn-type systems and then into W UMa-class contact stars with ...
G. N. Dryomova, M. A. Svechnikov, A. V. Tutukov   +2 more
doaj   +1 more source

The Blue Straggler F190: A Case for Mass Transfer [PDF]

Symposium - International Astronomical Union, 1992
The blue straggler F190 is a member of the old open cluster M67. We argue that F190 may still be in the final stages of the mass transfer that has made it into a blue straggler. We use the turnoff mass of the cluster and the mass function derived from the spectroscopic orbit for F190 to constrain the masses of each member of the binary, both before ...
Alejandra A. E. Milone, David W. Latham
openaire   +1 more source

Young blue straggler stars in the Galactic field [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
In this study we present an analysis of a sample of field blue straggler (BS) stars that show high ultra violet emission in their spectral energy distributions (SED): indication of a hot white dwarf (WD) companion to BS. Using photometry available in the Sloan Digital Sky Survey (SDSS) and Galaxy Evolution Explorer (GALEX ) surveys we identified 80 ...
Ekanayake, Gemunu, Wilhelm, Ronald
openaire   +2 more sources

FORMATION AND EVOLUTION OF BLUE STRAGGLERS IN 47 TUCANAE [PDF]

The Astrophysical Journal, 2016
ABSTRACT Blue stragglers (BSS) are stars whose position in the color–magnitude diagram (CMD) places them above the main sequence (MS) turn-off (TO) point of a star cluster. Using data from the core of 47 Tuc in the ultraviolet (UV), we have identified various stellar populations in the CMD, and used their radial distributions to study ...
Javiera Parada, Harvey Richer, Jeremy Heyl, Jason Kalirai, Ryan Goldsbury   +4 more
openaire   +2 more sources

Explaining the Praesepe blue straggler HD 73666 [PDF]

Astronomy and Astrophysics, 2010
Accepted for publication on Astronomy and ...
Fossati, Luca, Mochnacki, Stefan, Landstreet, John Darlington, Weiss, Werner Wolfgang   +3 more
openaire   +4 more sources

Chemical composition of a palomar 12 blue straggler

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT With the equivalent area of a 16-m telescope, ESPRESSO in 4UT mode allows to inaugurate high resolution spectroscopy for solar-type stars belonging to extragalactic globular clusters. We determine the chemical composition of an extragalactic blue straggler (BS).
L Pasquini, P Bonifacio, L Pulone, A Modigliani, E Brocato, L Sbordone, S Randich, G Cupani   +7 more
openaire   +4 more sources

Blue Straggler Bimodality: A Brownian Motion Model [PDF]

The Astrophysical Journal, 2018
Abstract The shape of the radial distribution of blue straggler stars (BSS), when normalized to a reference population of horizontal branch (HB) stars, has been found to be a powerful indicator of the dynamical evolution reached by a globular cluster (GC).
Pasquato, M.a, Miocchi, P.b, Yoon, S.-J.c   +5 more
openaire   +3 more sources

Stellar rotation and binaries in open clusters with Gaia Data Release 3

Astronomy & Astrophysics
Context. Stellar rotation is a fundamental ingredient in shaping the evolution of stars, and it can also be used to trace past stellar interactions. Yet, systematic studies of stellar rotation in large samples of stars belonging to different populations ...
Pancino E., Reggiani E., Marinoni S., Marrese P. M., Alvarez Garay D., Avdeeva A., Echeveste M., Leitinger E., Nedhath S., Rani S., Sanna N., Saracino S., Steinbauer L., Turchi A., Jadhav V. V., Kamann S., Rainer M.   +16 more
doaj   +1 more source

On the Evidence of Disks around Blue Straggler Stars [PDF]

The Astrophysical Journal, 2005
Recent observations of blue stragglers by De Marco et al. (2004) have revealed continuum deficits on the blue side of the Balmer discontinuity, leading these authors to infer the presence of discs around the stars. This intriguing possibility may throw light on aspects of the mechanisms responsible for at least some of these objects; current theories ...
Porter, John M., Townsend, R. H. D.
openaire   +2 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source