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We present ultraviolet (UV) integrated colors of 44 Galactic globular clusters (GGCs) observed with the Galaxy Evolution Explorer (GALEX) in both FUV and NUV bands. This data-base is the largest homogeneous catalog of UV colors ever…

Ultraviolet observations are the best tool to study hot stellar populations which emit most of their light at short wavelengths. As part of a large project devoted to the characterization of the UV properties of Galactic globular clusters…

Solar and Stellar Astrophysics · Physics 2015-06-18 E. P. Lagioia , E. Dalessandro , F. R. Ferraro , B. Lanzoni , M. Salaris

We present $V$ and $I$ photometry for $\sim 150$ globular clusters with $20 < V < 27$ $\sim 2.5$ arcmin from the centre of M87, the cD galaxy in the Virgo cluster. The data were acquired with the Hubble Space Telescope which, with effective…

Astrophysics · Physics 2015-06-24 Rebecca A. W. Elson , Basilio X. Santiago

As part of the Swift/UVOT Stars Survey, we present near-ultraviolet point-source photometry for 103 Galactic open clusters. These data, taken over the span of the mission, provide a unique and unprecedented set of near-ultraviolet…

Solar and Stellar Astrophysics · Physics 2019-07-10 Michael H. Siegel , Samuel J. Laporte , Blair L. Porterfield , Lea M. Z. Hagen , Caryl A. Gronwall

We introduce the SDSS/APOGEE Value Added Catalogue of Galactic Globular Cluster (GC) Stars. The catalogue is the result of a critical search of the APOGEE data release 17 (DR17) catalogue for candidate members of all known Galactic GCs.…

We have mosaiced 2MASS images to derive surface brightness profiles in JHK for 104 Galactic globular clusters. We fit these with King profiles, and show that the core radii are identical to within the errors for each of these IR colors, and…

Astrophysics · Physics 2009-11-11 Judith G. Cohen , Scott Hsieh , Stanimir Metchev , S. G. Djorgovski , M. Malkan

The Hubble Space Telescope has been used to obtain WFPC2 (V,I) photometry for a large sample of stars in the outer halo of the giant elliptical NGC 5128 (d = 4 Mpc). The globular cluster N5128-C44, at the center of the Planetary Camera…

Astrophysics · Physics 2009-10-30 G. L. H. Harris , G. B. Poole , W. E. Harris

The GSC-II is an all-sky database of objects derived from the uncompressed DSS that the STScI has created from the Palomar and UK Schmidt survey plates and made available to the community. Like its predecessor (GSC-I), the GSC-II was…

Hubble Space Telescope allows us to study the central surface brightness profiles for globular clusters at unprecedented detail. We have mined the HST archives to obtain 38 WFPC2 images of galactic globular clusters with adequate exposure…

Astrophysics · Physics 2008-11-26 E. Noyola , K. Gebhardt

We present deep Hubble Space Telescope optical imaging observations of two Galactic globular clusters, 47 Tuc and M15, using the Space Telescope Imaging Spectrograph (STIS) longpass (LP) filter and the Wide Field and Planetary Camera 2…

Astrophysics · Physics 2009-10-31 Mark L. Houdashelt , Rosemary F. G. Wyse , Gerard Gilmore

We use Hubble Space Telescope (HST) imaging from the ACS Treasury Survey to determine fits for single population isochrones of 69 Galactic globular clusters. Using robust Bayesian analysis techniques, we simultaneously determine ages,…

Solar and Stellar Astrophysics · Physics 2017-03-03 R. Wagner-Kaiser , A. Sarajedini , T. von Hippel , D. C. Stenning , D. A. van Dyk , E. Jeffery , E. Robinson , N. Stein , J. Anderson , W. H. Jefferys

This paper presents a detailed description of the acquisition and processing of a large body of imaging data for three fields in the globular cluster M4 taken with the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope.…

We present the first results from our HST Brightest Cluster Galaxy (BCG) survey of seven central supergiant cluster galaxies and their globular cluster (GC) systems. We measure a total of 48000 GCs in all seven galaxies, representing the…

We present wide field photometry of the Galactic Globular Cluster M~22 in the B, V and I passbands for more than 186,000 stars. The study is complemented by the photometry in two narrowband filters centered on H$_{\alpha}$ and the adjacent…

Astrophysics · Physics 2016-08-30 L. Monaco , E. Pancino , F. R. Ferraro , M. Bellazzini

We investigate the broadband optical emission of diffuse intergalactic stars in galaxy clusters at z~0.25 by means of an image stacking technique. The images of 654 clusters, selected with the max-BCG algorithm from a subsample of the…

Astrophysics · Physics 2009-11-10 Stefano Zibetti , Simon D. M. White

NGC 5846 is a giant elliptical galaxy with a previously well studied globular cluster system (GCS), known to have a bimodal colour distribution with a remarkably high red fraction. Here we revisit the central galaxy regions searching for…

Astrophysics · Physics 2009-11-11 A. L. Chies-Santos , M. G. Pastoriza , B. X. Santiago , D. A. Forbes

We present new isochrone fits to colour-magnitude diagrams of the Galactic globular cluster NGC\,6205 (M13). We utilise 34 photometric bands from the ultraviolet to mid-infrared by use of data from the {\it HST}, {\it Gaia} DR2, SDSS,…

Astrophysics of Galaxies · Physics 2020-08-25 G. A. Gontcharov , M. Yu. Khovritchev , A. V. Mosenkov

We present the gMOSS (Galaxies of Medium-band One-meter Schmidt telescope Survey) catalog of $\sim$ 19,000 galaxies in 20 filters (4 broadband SDSS and 16 medium-band filters). We observed 2.386 $\mathrm{deg^2}$ on the central part of the…

Astrophysics of Galaxies · Physics 2022-06-08 A. Grokhovskaya , S. N. Dodonov , T. A. Movsessian , S. S. Kotov

This paper supplements Jiang et al. (2003), who studied 172 M31 globular clusters (GCs) and globular cluster candidates from Battistini et al. (1987) on the basis of integrated photometric measurements in the…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 Jun Ma , Zhou Fan , Richard de Grijs , Zhenyu Wu , Xu Zhou , Jianghua Wu