Showing 1 - 7 results of 7 for search '"Globular cluster"', query time: 0.03s Refine Results
  1. 1

    Stellar Streams Reveal the Mass Loss of Globular Clusters by Yingtian Chen, Hui Li, Oleg Y. Gnedin

    Published 2025-01-01
    “…Globular cluster (GC) streams, debris of stars tidally stripped from their progenitor GCs, have densities that correlate positively with the GC mass-loss rate. …”
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  2. 2

    Observations of the Ultraviolet-bright Star III-60 in the Globular Cluster NGC 6723 by William V. Dixon

    Published 2025-01-01
    “…We have analyzed archival far-ultraviolet spectra of the UV-bright star III-60 in the globular cluster NGC 6723 obtained with the Far Ultraviolet Spectroscopic Explorer and the Cosmic Origins Spectrograph. …”
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  3. 3

    A Second Candidate Magnetic Helium Core White Dwarf and 3 Other Variable White Dwarfs in the Globular Cluster NGC 6397 by Manuel Pichardo Marcano, Liliana E. Rivera Sandoval, Thomas J. Maccarone, Rene D. Rohrmann, Leandro G. Althaus, Craig O. Heinke, Diogo Belloni, Arash Bahramian

    Published 2025-01-01
    “…Using archival Hubble Space Telescope observations, we report the discovery of four variable low-mass white dwarfs (WDs; 0.18 M _⊙ ≤ M ≤ 0.5 M _⊙ ) in the globular cluster NGC 6397. One source exhibits a periodic optical modulation of 5.21 ± 0.02 hr, which we interpret as potentially due to the rotation of a magnetic helium core WD (He WD). …”
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  4. 4

    Intermediate Mass Black Holes: Their Motion and Associated Energetics by C. Sivaram, Kenath Arun

    Published 2014-01-01
    “…The active galaxy M82 and the globular cluster G1 in M31, for example, are known to host such objects. …”
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  5. 5

    The Multiple Extended Tidal Tails of NGC 288 by Carl J. Grillmair

    Published 2025-01-01
    “…Using photometry and proper motions from Pan-STARRS, DECaLS, and Gaia Data Release 3, we detect a ∼35°–70° long trailing stellar debris stream associated with the globular cluster NGC 288. The trajectory of the trailing tail is not well matched by a model stream evolved in a static Galactic potential, but is reasonably well matched by a stream modeled in a potential that incorporates a massive, infalling Large Magellanic Cloud. …”
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  6. 6

    GD-1 Stellar Stream and Cocoon in the DESI Early Data Release by M. Valluri, P. Fagrelius, S. E. Koposov, T. S. Li, Oleg Y. Gnedin, E. F. Bell, R. G. Carlberg, A. P. Cooper, J. Aguilar, S. Ahlen, C. Allende Prieto, V. Belokurov, L. Beraldo e Silva, D. Brooks, A. Byström, T. Claybaugh, K. Dawson, A. Dey, P. Doel, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, J. Han, K. Honscheid, T. Kisner, A. Kremin, A. Lambert, M. Landriau, L. Le Guillou, M. E. Levi, A. de la Macorra, M. Manera, P. Martini, G. E. Medina, A. Meisner, R. Miquel, J. Moustakas, A. D. Myers, J. Najita, C. Poppett, F. Prada, M. Rezaie, G. Rossi, A. H. Riley, E. Sanchez, D. Schlegel, M. Schubnell, D. Sprayberry, G. Tarlé, G. Thomas, B. A. Weaver, R. H. Wechsler, R. Zhou, H. Zou

    Published 2025-01-01
    “…The progenitor of the GD-1 stream was an accreted globular cluster (GC) and: (a) the cocoon was produced by pre-accretion tidal stripping of the GC while it was still inside its parent dwarf galaxy; (b) the cocoon comprises debris from the parent dwarf galaxy; (c) an initially thin GC tidal stream was heated by impacts from dark subhalos in the Milky Way; (d) an initially thin GC stream was heated by a massive Sagittarius dwarf galaxy; or a combination of some of these. …”
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  7. 7

    Rates of Stellar Tidal Disruption Events around Intermediate-mass Black Holes by Janet N. Y. Chang, Lixin Dai, Hugo Pfister, Rudrani Kar Chowdhury, Priyamvada Natarajan

    Published 2025-01-01
    “…The IMBH TDEs from galactic nuclei have an overall volumetric rate comparable to SMBH TDEs at ∼10 ^−7 Mpc ^−3 yr ^−1 , and off-center IMBH TDEs from globular clusters have a volumetric rate that is one or two orders of magnitude lower, assuming that their occupation fraction varies within 10%–100%. …”
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