Results 1 to 10 of about 37,423 (345)
The globular cluster migratory origin of nuclear star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 19 pages, 20 figures, submitted to ...
ARCA SEDDA, MANUEL +1 more
openaire +3 more sources
Spectroscopy of Main-Sequence and Subgiant Stars in Globular Star Clusters [PDF]
Symposium - International Astronomical Union, 1984 Since the mid-1970's it has been apparent that giant stars of similar V and B-V within a “normal” globular cluster [i.e., one with a narrow giant branch in its color-magnitude diagram (CMD)] exhibit a perplexing range of strengths for such spectral features as CH, CN and NH.
James E. Hesser +3 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present a photometric analysis of globular cluster 47 Tuc (NGC 104) using near-IR imaging data from the GeMS/GSAOI Galactic Globular Cluster Survey (G4CS), which is in operation at Gemini-South telescope.
Mirko Simunovic +7 more
doaj +1 more source
The Astronomical Journal, 2023 Wide-field and deep DECam multiband photometry, combined with HST data for the core of the Galactic globular cluster NGC 2808, allowed us to study the distribution of various stellar subpopulations and stars in different evolutionary phases out to the ...
Christian I. Johnson +9 more
doaj +1 more source
Probing the Faintest Stars in a Globular Star Cluster [PDF]
Science, 2006 NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed an ultradeep color-magnitude diagram for this cluster. We see a clear truncation in each of its two major stellar sequences.
Richer, Harvey B. +12 more
openaire +4 more sources
oMEGACat. I. MUSE Spectroscopy of 300,000 Stars within the Half-light Radius of ω Centauri
The Astrophysical Journal, 2023 Omega Centauri ( ω Cen) is the most massive globular cluster of the Milky Way and has been the focus of many studies that reveal the complexity of its stellar populations and kinematics.
M. S. Nitschai +19 more
doaj +1 more source
Young Star Clusters: Progenitors of Globular Clusters!? [PDF]
Highlights of Astronomy, 2005 AbstractStar cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. Young clusters are observed to form in a variety of such galaxies, a substantial number resembling the progenitors of globular clusters in mass and size, but with significantly enhanced metallicity.
Anders, Peter +2 more
openaire +3 more sources
Blue hook stars in globular clusters [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2009 Abstract Blue hook (BHk) stars are a rare class of horizontal branch stars that have so far been found in only very few Galactic globular clusters (GCs). The dominant mechanism for producing these objects is currently still unclear.
Dieball, A. +6 more
openaire +3 more sources
Dynamics of Stars and Globular Clusters in M87 [PDF]
The Astrophysical Journal, 2001 We examine the dynamics of the stars and globular clusters in the nearby giant galaxy M87 and constrain the mass distribution, using all the available data over a large range of radii, including higher-order moments of the stellar line-of-sight velocity distributions and the discrete velocities of over two hundred globular clusters.
Romanowsky, Aaron J., Kochanek, C. S.
openaire +4 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