Results 31 to 40 of about 85,801 (378)
On the absence of symbiotic stars in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Even though plenty of symbiotic stars (SySts) have been found in the Galactic field and nearby galaxies, not a single one has ever been confirmed in a Galactic globular cluster (GC). We investigate the lack of such systems in GCs for the first time by analysing 144 GC models evolved with the mocca code, which have different ...
K. Iłkiewicz +7 more
openaire +3 more sources
First Evidence of Multi-iron Subpopulations in the Bulge Fossil Fragment Candidate Liller 1
The Astrophysical Journal, 2023 In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation epoch), here we present the first determination of the metallicity distribution of Liller 1.
Chiara Crociati +11 more
doaj +1 more source
Can Neutron-star Mergers Explain the r-process Enrichment in Globular Clusters? [PDF]
Astrophysical Journal, 2019 Star-to-star dispersion of r-process elements has been observed in a significant number of old, metal-poor globular clusters (GCs). We investigate early-time neutron-star mergers as the mechanism for this enrichment.
M. Zevin +6 more
semanticscholar +1 more source
Massive Stars and Globular Cluster Formation [PDF]
The Astrophysical Journal, 2007 We first present chemodynamical simulations to investigate how stellar winds of massive stars influence early dynamical and chemical evolution of forming globular clusters (GCs). In our numerical models, GCs form in turbulent,high-density giant molecular clouds (GMCs), which are embedded in a massive dark matter halo at high redshifts. We show how high-
Masashi Chiba, Kenji Bekki
openaire +4 more sources
Future of the General Catalogue of Variable Stars from the Experience of Recent Name-lists
Open Astronomy, 2021 We briefly outline the history of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variable Stars (NSV catalogue). Recently, we have completed a revision of the NSV catalogue.
Samus Nikolay N. +5 more
doaj +1 more source
A Massive Neutron Star in the Globular Cluster M5 [PDF]
The Astrophysical Journal, 2008 10 pages in ApJ emulate format, 2 tables, 6 figures. Added February 2008 data, slightly revised mass limits.
P. C. C. Freire +3 more
openalex +7 more sources
The Astrophysical Journal, 2023 We characterize the optical counterparts to the compact X-ray source population within the nearby spiral galaxy M81 using multiband Hubble Space Telescope (HST) imaging data.
Qiana Hunt +4 more
doaj +1 more source
STAR CLUSTERS IN M31. VII. GLOBAL KINEMATICS AND METALLICITY SUBPOPULATIONS OF THE GLOBULAR CLUSTERS [PDF]
, 2016 We carry out a joint spatial–kinematical–metallicity analysis of globular clusters (GCs) around the Andromeda Galaxy (M31), using a homogeneous, high-quality spectroscopic data set.
N. Caldwell, A. Romanowsky
semanticscholar +1 more source
Searching for New Globular Clusters in M31 with Gaia EDR3
The Astrophysical Journal, 2023 We have found 50 new globular cluster (GC) candidates around M31 with Gaia Early Data Release 3 (EDR3), with the help of Pan-STARRS1 DR1 magnitudes and Pan-Andromeda Archaeological Survey (PAndAS) images.
Yilun Wang +7 more
doaj +1 more source
On the Origin of GW190521-like Events from Repeated Black Hole Mergers in Star Clusters [PDF]
Astrophysical Journal, 2020 LIGO and Virgo have reported the detection of GW190521, from the merger of a binary black hole (BBH) with a total mass around 150 M⊙. While current stellar models limit the mass of any black hole (BH) remnant to about 40–50 M⊙, more massive BHs can be ...
G. Fragione, A. Loeb, F. Rasio
semanticscholar +1 more source