Results 61 to 70 of about 365 (142)

Once a Triple, Not Always a Triple: The Evolution of Hierarchical Triples That Yield Merged Inner Binaries

The Astrophysical Journal
More than half of all main-sequence (MS) stars have one or more companions, and many of those with initial masses 10 yr) companions. Furthermore, both BSS binaries and DWDs exhibit signatures of WD birth kicks.
Cheyanne Shariat, Smadar Naoz, Kareem El-Badry, Antonio C. Rodriguez, Bradley M. S. Hansen, Isabel Angelo, Alexander P. Stephan   +6 more
doaj   +1 more source

Stellar Spin-down in Post-mass-transfer Binary Systems

The Astrophysical Journal
Motivated by measurements of the rotation speed of accretor stars in post-mass-transfer (post-MT) systems, we investigate how magnetic braking affects the spin-down of individual stars during binary evolution with the MESAbinary module.
Meng Sun, Seth Gossage, Emily M. Leiner, Aaron M. Geller   +3 more
doaj   +1 more source

A new, Gaia-based, catalogue of blue straggler stars in open clusters [PDF]

, 2021
M. J. Rain, J. A. Ahumada, G. Carraro, M. J. Rain, J. A. Ahumada, G. Carraro   +5 more
openalex   +1 more source

The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067

The Astrophysical Journal
We present the analysis of the extended main-sequence turnoff (eMSTO) in the open cluster NGC 6067. We derive the projected rotational velocity, v sin i , of the stars belonging to the eMSTO region of the main sequence (MS) utilizing Gaia-ESO spectra ...
Jayanand Maurya, Yu Zhang, Sebastian Kamann, Hubiao Niu, Yves Frémat, Kaixiang Lang, Y. C. Joshi, M. R. Samal, Peter De Cat, Ali Esamdin   +9 more
doaj   +1 more source

Discovery of a Barium Blue Straggler Star in M67 and “Sighting” of Its White Dwarf Companion

The Astrophysical Journal Letters
We report the discovery of a barium blue straggler star (BSS) in M67, exhibiting enhancements in slow neutron-capture ( s -)process elements. Spectroscopic analysis of two BSSs (WOCS 9005 & WOCS 1020) and four stars located near the main-sequence turn ...
Harshit Pal, Annapurni Subramaniam, Arumalla B. S. Reddy, Vikrant V. Jadhav   +3 more
doaj   +1 more source

Evidence for Blue Straggler Stars Rejuvenating the Integrated Spectra of Globular Clusters [PDF]

, 2008
A. Javier Cenarro, J. L. Cervantes, Michael A. Beasley, Antonio Marin-Franch, Alexandre Vazdekis, A. Javier Cenarro, J. L. Cervantes, Michael A. Beasley, Antonio Marin-Franch, Alexandre Vazdekis   +9 more
openalex   +1 more source

The new detection of blue straggler stars in 50 open clusters using Gaia DR3 [PDF]

, 2023
Chunyan Li, Jing Zhong, Songmei Qin, Li Chen   +3 more
openalex   +1 more source

Wind Roche-lobe Overflow in Low-mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers

The Astrophysical Journal
Wind Roche-lobe overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski for stellar binaries wherein the wind acceleration zone of the donor star exceeds its Roche-lobe radius, allowing stellar wind material to be transferred ...
Meng Sun, Sasha Levina, Seth Gossage, Vicky Kalogera, Emily M. Leiner, Aaron M. Geller, Zoheyr Doctor   +6 more
doaj   +1 more source

Chemical properties of field halo and thick disk blue straggler stars: first results [PDF]

, 2005
A. Bragaglia, E. Carretta, A. Recio Blanco, C. Cacciari, T. D. Kinman   +4 more
openalex   +1 more source

Observations of Spin-down in Post-mass-transfer Stars and the Possibility for Blue Straggler Gyrochronology [PDF]

, 2018
Emily Leiner, Robert D. Mathieu, Natalie M. Gosnell, Alison Sills   +3 more
openalex   +1 more source