VEGAS-SSS. II. Comparing the globular cluster systems in NGC 3115 and NGC 1399 using VEGAS and FDS survey data. The quest for a common genetic heritage of globular cluster systems
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201730649
Abstract: We analyze the globular cluster (GC) systems in two very different galaxies, N3115 and N1399. With the papers of this series, we aim at highlighting common and different properties in the GC systems in galaxies… read more here.
Keywords: red gcs; globular cluster; vegas fds; cluster systems ... See more keywords
Abundances of Mg and K in the atmospheres of turn-off starsin Galactic globular cluster 47 Tucanae
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DOI: 10.1051/0004-6361/201731659
Abstract: We determined abundances of Mg and K in the atmospheres of 53 (Mg) and 75 (K) turn-off (TO) stars of the Galactic globular cluster 47 Tuc. The obtained abundances, together with those of Li, O,… read more here.
Keywords: galactic globular; abundances atmospheres; atmospheres turn; abundance ... See more keywords
EXTraS discovery of a peculiar flaring X-ray source in the Galactic globular cluster NGC 6540
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201833086
Abstract: We report the discovery of a flaring X-ray source in the globular cluster NGC 6540, obtained during the EXTraS project devoted to a systematic search for variability in archival data of the XMM-Newton satellite. The… read more here.
Keywords: ngc 6540; flaring ray; ray source; ray ... See more keywords
An outer shade of Pal: Abundance analysis of the outer halo globular cluster Palomar 13
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DOI: 10.1051/0004-6361/201936710
Abstract: At a Galactocentric distance of 27 kpc, Pal 13 is an old globular cluster (GC) in the outer halo. We present a chemical abundance analysis of this remote system from high-resolution spectra obtained with Keck/HIRES.… read more here.
Keywords: outer halo; analysis; abundance; outer ... See more keywords
Properties of the brightest globular cluster in M 81 based on multicolour observations
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DOI: 10.1051/0004-6361/202140574
Abstract: Context. Researching the properties of the brightest globular cluster (referred to as GC1) in M 81 can provide a fossil record of the earliest stages of galaxy formation and evolution. The Beijing–Arizona–Taiwan–Connecticut (BATC) Multicolour Sky… read more here.
Keywords: age mass; gc1; brightest globular; cluster ... See more keywords
Globular cluster ejection, infall, and the host dark matter halo of the Pegasus dwarf galaxy
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DOI: 10.1093/mnras/staa004
Abstract: Recent photometric observations revealed a massive, extended (MGC ≳ 105 M⊙; Rh ∼ 14 pc) globular cluster (GC) in the central region (D3D ≲ 100 pc) of the low-mass (M* ∼ 5 × 106 M⊙) dwarf irregular galaxy Pegasus. This massive… read more here.
Keywords: galaxy; dark matter; host; dwarf ... See more keywords
Multi-epoch X-ray imaging of globular cluster M62 with Chandra
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DOI: 10.1093/mnras/staa2462
Abstract: Using archival spectral-imaging data with a total exposure of $\sim144$ ks obtained by {\it Chandra}, 43 X-ray sources are detected within the half-light radius of globular cluster M62 (NGC6266). Based on the X-ray colour-luminosity diagram… read more here.
Keywords: term; m62; cluster m62; ray ... See more keywords
A high-resolution spectroscopic study of two new Na- and Al-rich field giants–likely globular cluster escapees in the Galactic halo
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa671
Abstract: The stars SDSS J064655.6+411620.5 and SDSS J193712.01+502455.5 are relatively bright stars that were initially observed as part of the SDSS/MARVELS pre-survey. They were selected, on the basis of their weak CH $G$-bands, along with a… read more here.
Keywords: resolution spectroscopic; high resolution; globular cluster; halo ... See more keywords
Chandra and HST studies of six millisecond pulsars in the globular cluster M13
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DOI: 10.1093/mnras/stab117
Abstract: We analyse 55 ks of Chandra X-ray observations of the Galactic globular cluster (GC) M13. Using the latest radio timing positions of six known millisecond pulsars (MSPs) in M13 from Wang et al. (2020), we detect… read more here.
Keywords: ray; j1641; millisecond pulsars; m13 ... See more keywords
Far-ultraviolet investigation into the galactic globular cluster M30 (NGC 7099): II. Potential X-ray counterparts and variable sources
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DOI: 10.1093/mnras/stac1039
Abstract: We present a far-ultraviolet (FUV) study of the globular cluster M30 (NGC 7099). The images were obtained using the Advanced Camera for Surveys (ACS/SBC, F150LP, FUV) and the Wide Field Planetary Camera 2 (WFPC2, F300W,… read more here.
Keywords: variable sources; m30 ngc; cluster m30; far ultraviolet ... See more keywords
On the Determination of Galactic Globular Cluster Metallicities from the Periods and V-Band Amplitudes of their Fundamental-Mode RR Lyrae Variables
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DOI: 10.1093/mnras/stad1066
Abstract: There are primarily two relations currently being used in the literature to calculate the metal abundance of ab-type RR Lyrae variables from their periods and V-band amplitudes. They are the one from Alcock et al., which… read more here.
Keywords: lyrae variables; globular cluster; galactic globular; cluster ... See more keywords