Search Results - "Sarajedini, A."

The Hubble Space Telescope UV Legacy Survey of Galactic globular clusters – IX. The Atlas of multiple stellar populations by Milone, A P, Piotto, G, Renzini, A, Marino, A F, Bedin, L R, Vesperini, E, D'Antona, F, Nardiello, D, Anderson, J, King, I R, Yong, D, Bellini, A, Aparicio, A, Barbuy, B, Brown, T M, Cassisi, S, Ortolani, S, Salaris, M, Sarajedini, A, vanderMarel, R P

“…We use high-precision photometry of red-giant-branch (RGB) stars in 57 Galactic globular clusters (GCs), mostly from the 'Hubble Space Telescope (HST) UV…”
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The Hubble Space Telescope UV legacy survey of galactic globular clusters – XVI. The helium abundance of multiple populations by Milone, A P, Marino, A F, Renzini, A, D’Antona, F, Anderson, J, Barbuy, B, Bedin, L R, Bellini, A, Brown, T M, Cassisi, S, Cordoni, G, Lagioia, E P, Nardiello, D, Ortolani, S, Piotto, G, Sarajedini, A, Tailo, M, van der Marel, R P, Vesperini, E

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The Hubble Space Telescope UV Legacy Survey of galactic globular clusters – II. The seven stellar populations of NGC 7089 (M2) by Milone, A. P., Marino, A. F., Piotto, G., Bedin, L. R., Anderson, J., Renzini, A., King, I. R., Bellini, A., Brown, T. M., Cassisi, S., D'Antona, F., Jerjen, H., Nardiello, D., Salaris, M., Marel, R. P. van der, Vesperini, E., Yong, D., Aparicio, A., Sarajedini, A., Zoccali, M.

“…We present high-precision multiband photometry for the globular cluster (GC) M2. We combine the analysis of the photometric data obtained from the Hubble Space…”
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GLOBAL AND NONGLOBAL PARAMETERS OF HORIZONTAL-BRANCH MORPHOLOGY OF GLOBULAR CLUSTERS by Milone, A P, Marino, A F, Dotter, A, Norris, J E, Jerjen, H, Piotto, G, Cassisi, S, Bedin, L R, Blanco, A Recio, Sarajedini, A, Asplund, M, Monelli, M, Aparicio, A

“…The horizontal-branch (HB) morphology of globular clusters (GCs) is mainly determined by metallicity. However, the fact that GCs with almost the same…”
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The ACS survey of Galactic globular clusters – XIV. Bayesian single-population analysis of 69 globular clusters by Wagner-Kaiser, R., Sarajedini, A., von Hippel, T., Stenning, D. C., van Dyk, D. A., Jeffery, E., Robinson, E., Stein, N., Anderson, J., Jefferys, W. H.

“…Abstract We use Hubble Space Telescope (HST) imaging from the ACS Treasury Survey to determine fits for single population isochrones of 69 Galactic globular…”
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Panchromatic Hubble Andromeda Treasury XIII: The Cepheid period-luminosity relation in M31 by Wagner-Kaiser, R., Sarajedini, A., Dalcanton, J. J., Williams, B. F., Dolphin, A.

“…Using Hubble Space Telescope Advanced Camera for Surveys (HST/ACS) and Wide Field Camera 3 (WFC3) observations from the Panchromatic Hubble Andromeda Treasury…”
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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters – XII. The RGB bumps of multiple stellar populations by Lagioia, E P, Milone, A P, Marino, A F, Cassisi, S, Aparicio, A J, Piotto, G, Anderson, J, Barbuy, B, Bedin, L R, Bellini, A, Brown, T, D'Antona, F, Nardiello, D, Ortolani, S, Pietrinferni, A, Renzini, A, Salaris, M, Sarajedini, A, van der Marel, R, Vesperini, E

“…Abstract The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters is providing a major breakthrough in our knowledge of globular clusters…”
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The ACS Survey of Galactic Globular Clusters. III. The Double Subgiant Branch of NGC 1851 by Milone, A. P, Bedin, L. R, Piotto, G, Anderson, J, King, I. R, Sarajedini, A, Dotter, A, Chaboyer, B, Marín-Franch, A, Majewski, S, Aparicio, A, Hempel, M, Paust, N. E. Q, Reid, I. N, Rosenberg, A, Siegel, M

“…Photometry with the Hubble Space Telescope Advanced Camera for Surveys (HST ACS) reveals that the subgiant branch (SGB) of the globular cluster NGC 1851 splits…”
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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XX. Ages of Single and Multiple Stellar Populations in Seven Bulge Globular Clusters by Oliveira, R. A. P., Souza, S. O., Kerber, L. O., Barbuy, B., Ortolani, S., Piotto, G., Nardiello, D., Pérez-Villegas, A., Maia, F. F. S., Bica, E., Cassisi, S., D'Antona, F., Lagioia, E. P., Libralato, M., Milone, A. P., Anderson, J., Aparicio, A., Bedin, L. R., Brown, T. M., King, I. R., Marino, A. F., Pietrinferni, A., Renzini, A., Sarajedini, A., van der Marel, R., Vesperini, E.

“…In the present work we analyzed seven globular clusters (GCs) selected from their location in the Galactic bulge and with metallicity values in the range −1.30…”
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THE HUBBLE SPACE TELESCOPE UV LEGACY SURVEY OF GALACTIC GLOBULAR CLUSTERS. VII. IMPLICATIONS FROM THE NEARLY UNIVERSAL NATURE OF HORIZONTAL BRANCH DISCONTINUITIES by Brown, T M, Cassisi, S, D'Antona, F, Salaris, M, Milone, A P, Dalessandro, E, Piotto, G, Renzini, A, Sweigart, A V, Bellini, A

“…ABSTRACT The UV-initiative Hubble Space Telescope Treasury survey of Galactic globular clusters provides a new window into the phenomena that shape the…”
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The Hubble Space Telescope UV Legacy Survey of Galactic globular clusters – XXI. Binaries among multiple stellar populations by Milone, A P, Vesperini, E, Marino, A F, Hong, J, van der Marel, R, Anderson, J, Renzini, A, Cordoni, G, Bedin, L R, Bellini, A, Brown, T M, D’Antona, F, Lagioia, E P, Libralato, M, Nardiello, D, Piotto, G, Tailo, M, Cool, A, Salaris, M, Sarajedini, A

“…Abstract A number of scenarios for the formation of multiple populations in globular clusters (GCs) predict that second generation (2G) stars form in a compact…”
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BAYESIAN ANALYSIS OF TWO STELLAR POPULATIONS IN GALACTIC GLOBULAR CLUSTERS. I. STATISTICAL AND COMPUTATIONAL METHODS by Stenning, D. C., Wagner-Kaiser, R., Robinson, E., van Dyk, D. A., Hippel, T. von, Sarajedini, A., Stein, N.

“…ABSTRACT We develop a Bayesian model for globular clusters composed of multiple stellar populations, extending earlier statistical models for open clusters…”
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THE INTRIGUING STELLAR POPULATIONS IN THE GLOBULAR CLUSTERS NGC 6388 AND NGC 6441 by Bellini, A, Piotto, G, Milone, A P, King, I R, Renzini, A, Cassisi, S, Anderson, J, Bedin, L R, Nardiello, D, PIETRINFERNI, A, Sarajedini, A

“…NGC 6388 and NGC 6441 are two massive Galactic bulge globular clusters that share many properties, including the presence of an extended horizontal branch…”
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Testing Metal-poor Stellar Models and Isochrones with HST Parallaxes of Metal-poor Stars by Chaboyer, B., McArthur, B. E., O'Malley, E., Benedict, G. F., Feiden, G. A., Harrison, T. E., McWilliam, A., Nelan, E. P., Patterson, R. J., Sarajedini, A.

“…Hubble Space Telescope (HST) fine guidance sensor observations were used to obtain parallaxes of eight metal-poor ([Fe/H] < −1.4) stars. The parallaxes of…”
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HST/WFPC2 imaging of the dwarf satellites And XI and And XIII: horizontal branch morphology and RR Lyraes by Yang, S.-C., Sarajedini, A.

“…We present a study of the stellar populations in two faint M31 dwarf satellites, Andromeda XI and Andromeda XIII. Using archival images from the Wide Field…”
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Bayesian analysis of two stellar populations in Galactic globular clusters– III. Analysis of 30 clusters by Wagner-Kaiser, R, Stenning, D C, Sarajedini, A, Hippel, T von, vanDyk, D A, Robinson, E, Stein, N, Jefferys, W H

“…We use Cycle 21 Hubble Space Telescope (HST) observations and HST archival ACS Treasury observations of 30 Galactic globular clusters to characterize two…”
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The fraction of binary systems in the core of 13 low-density Galactic globular clusters by Sollima, A., Beccari, G., Ferraro, F. R., Fusi Pecci, F., Sarajedini, A.

“…We used deep observations collected with Advanced Camera for Surveys (ACS) at Hubble Space Telescope (HST) to derive the fraction of binary systems in a sample…”
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A far-ultraviolet variable with an 18-minute period in the globular cluster NGC 1851 by Zurek, D. R., Knigge, C., Maccarone, T. J., Pooley, D., Dieball, A., Long, K. S., Shara, M., Sarajedini, A.

“…We present the detection of a variable star with an 18.05 min period in far-ultraviolet (FUV) images of the globular cluster NGC 1851 taken with the Hubble…”
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The void in the Sculptor group spiral galaxy NGC 247 by Wagner-Kaiser, R, De Maio, T, Sarajedini, A, Chakrabarti, S

“…The dwarf galaxy NGC 247, located in the Sculptor Filament, displays an apparent void on the north side of its spiral disc. The existence of the void in the…”
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BAYESIAN ANALYSIS OF TWO STELLAR POPULATIONS IN GALACTIC GLOBULAR CLUSTERS. II. NGC 5024, NGC 5272, AND NGC 6352 by Wagner-Kaiser, R., Stenning, D. C., Robinson, E., Hippel, T. von, Sarajedini, A., Dyk, D. A. van, Stein, N., Jefferys, W. H.

“…ABSTRACT We use Cycle 21 Hubble Space Telescope (HST) observations and HST archival Advanced Camera for Surveys Treasury observations of Galactic Globular…”
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