Results 31 to 40 of about 139 (112)

UOCS-IX. AstroSat/UVIT Study of the Open Cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their Membership

open access: yesThe 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

Formation Channels for Blue Straggler Stars [PDF]

open access: yes, 2014
In this chapter we consider two formation channels for blue straggler stars: 1) the merger of two single stars via a collision, and 2) those produced via mass transfer within a binary. We review how computer simulations show that stellar collisions are likely to lead to relatively little mass loss and are thus effective in producing a young population ...
openaire   +2 more sources

THE FIRST DETECTION OF BLUE STRAGGLER STARS IN THE MILKY WAY BULGE [PDF]

open access: yesThe Astrophysical Journal, 2011
ApJ in press; 25 pages, 6 figures, 2 ...
Clarkson, W. I.   +10 more
openaire   +11 more sources

The Origin of Young Stellar Populations in NGC 1783: Accretion of External Stars

open access: yesThe Astrophysical Journal
The presence of young stellar populations in the Large Magellanic Cloud cluster NGC 1783 has caught significant attention, with suggestions ranging from it being a genuine secondary stellar generation to a population of blue straggler stars or simply ...
Li Wang   +6 more
doaj   +1 more source

A rotation-based census of blue lurker candidates in open clusters

open access: yesAstronomy & Astrophysics
Aims. We have compiled a list of blue lurker (BL) candidates in open clusters using the available rotation catalogs. Blue lurkers are rejuvenated main-sequence stars hidden among normal main-sequence stars on color-magnitude diagrams of star clusters. In
Jadhav Vikrant V.   +2 more
doaj   +1 more source

Investigating 16 Open Clusters in the Kepler/K2–Gaia DR3 Field. I. Membership, Binary Systems, and Rotation

open access: yesThe Astrophysical Journal Supplement Series, 2023
Using data from Gaia Data Release 3 and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4–4000 Myr that provides detailed information on membership, binary systems, and rotation. We assess the memberships in 5D phase space, and
Liu Long   +11 more
doaj   +1 more source

Blue Straggler Stars: The Spectacular Population in M80

open access: yesThe Astrophysical Journal, 1999
15 pages, 5 figures, Astrophysical Journal Letters, in ...
Ferraro, Francesco R.   +3 more
openaire   +2 more sources

Magnetic Field Amplification during Stellar Collisions between Low-mass Stars

open access: yesThe Astrophysical Journal Letters
Blue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu   +4 more
doaj   +1 more source

Transitory Tidal Heating and Its Impact on Cluster Isochrones

open access: yesThe Astrophysical Journal
The kinetic energy in tidal flows, when converted into heat, can affect the internal structure of a star and shift its location on a color–magnitude diagram from that of standard models.
S. Jane Arthur   +4 more
doaj   +1 more source

Blue stragglers as the source of the high-velocity A stars

open access: yesThe Astrophysical Journal, 1988
A quantitative estimate of the contribution of blue stragglers to the stellar population in the solar neighborhood is made, with particular attention to the spatial distribution of early-type stragglers at large distance from the Galactic plane. Blue stragglers are assumed to be created in the disk at a rate consistent with the empirical data from open
Joseph C. Shields, Bruce A. Twarog
openaire   +1 more source

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