Search Results - "Sarajedini, Ata"

SX Phoenicis period-luminosity relations and the blue straggler connection by Cohen, Roger E., Sarajedini, Ata

“…This study is aimed at investigating the period-luminosity relation of SX Phoenicis (SX Phe) pulsators in Galactic globular clusters (GGCs) and Local Group…”
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Standard Galactic field RR Lyrae II: a Gaia DR2 calibration of the period–Wesenheit–metallicity relation by Neeley, Jillian R, Marengo, Massimo, Freedman, Wendy L, Madore, Barry F, Beaton, Rachael L, Hatt, Dylan, Hoyt, Taylor, Monson, Andrew J, Rich, Jeffrey A, Sarajedini, Ata, Seibert, Mark, Scowcroft, Victoria

“…ABSTRACT RR Lyrae stars have long been popular standard candles, but significant advances in methodology and technology have been made in recent years to…”
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The ACS Survey of Galactic Globular Clusters. IX. Horizontal Branch Morphology and the Second Parameter Phenomenon by Dotter, Aaron, Sarajedini, Ata, Anderson, Jay, Aparicio, Antonio, Bedin, Luigi R, Chaboyer, Brian, Majewski, Steven, Marín-Franch, A, Milone, Antonino, Paust, Nathaniel, Piotto, Giampaolo, Reid, I. Neill, Rosenberg, Alfred, Siegel, Michael

“…The horizontal branch (HB) morphology of globular clusters (GCs) is most strongly influenced by metallicity. The second parameter phenomenon, first described…”
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CCD UBV and Gaia DR3 Analyses of the Open Clusters King 6 and NGC 1605 by Gokmen, Sevinc, Eker, Zeki, Yontan, Talar, Bilir, Selçuk, Ak, Tansel, Ak, Serap, Banks, Timothy, Sarajedini, Ata

“…Abstract A detailed analysis of ground-based CCD UBV photometry and space-based Gaia Data Release 3 (DR3) data for the open clusters King 6 and NGC 1605 was…”
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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XXIV. Differences in Internal Kinematics of Multiple Stellar Populations by Libralato, Mattia, Vesperini, Enrico, Bellini, Andrea, Milone, Antonino P., van der Marel, Roeland P., Piotto, Giampaolo, Anderson, Jay, Aparicio, Antonio, Barbuy, Beatriz, Bedin, Luigi R., Brown, Thomas M., Cassisi, Santi, Nardiello, Domenico, Sarajedini, Ata, Scalco, Michele

“…Abstract Our understanding of the kinematic properties of multiple stellar populations (mPOPs) in Galactic globular clusters (GCs) is still limited compared to…”
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The ACS Survey of Galactic Globular Clusters: M54 and Young Populations in the Sagittarius Dwarf Spheroidal Galaxy by Siegel, Michael H, Dotter, Aaron, Majewski, Steven R, Sarajedini, Ata, Chaboyer, Brian, Nidever, David L, Anderson, Jay, Marín-Franch, Antonio, Rosenberg, Alfred, Bedin, Luigi R, Aparicio, Antonio, King, Ivan, Piotto, Giampaolo, Reid, I. Neill

“…As part of the ACS Survey of Galactic Globular Clusters, we present new Hubble Space Telescope photometry of the massive globular cluster M54 (NGC 6715) and…”
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Homogeneous metallicities for 14 old LMC globular clusters based on their fundamental mode RR Lyrae stars by Sarajedini, Ata

“…ABSTRACT We present the first internally consistent set of [Fe/H] values for 14 of the 15 old globular clusters in the Large Magellanic Cloud (LMC). We make…”
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Metallicities for globular clusters in the fornax, sagittarius, and canis major dwarf spheroidal galaxies and their total luminosities by Sarajedini, Ata

“…ABSTRACT We present [Fe/H] values for globular clusters associated with the Fornax, Sagittarius, and Canis Major dwarf spheroidal galaxies based on the light…”
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The properties of RR Lyrae variable stars in the Local Group dwarf galaxy LGS-3 by Sarajedini, Ata

“…ABSTRACT We present a sample of 56 RR Lyrae variable stars (48 ab-type and 8 c-type) measured from a set of F475W (≈B filter) and F814W (≈I filter) archival…”
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The properties of RR Lyrae variable stars in the isolated Local Group dwarf galaxy WLM by Sarajedini, Ata

“…ABSTRACT We present an analysis of 50 F475W (≈B filter) and F814W (≈I filter) archival images taken with the Hubble Space Telescope (HST)/Advanced Camera for…”
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A differential RR Lyrae line-of-sight distance between M31 and M33 by Sarajedini, Ata

“…ABSTRACT We present a purely differential line-of-sight distance between M31 and M33 using ab-type RR Lyrae variables observed in each galaxy by the Hubble…”
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Resolved stellar populations as a key to unlocking the formation and evolution of galaxies by Sarajedini, Ata

“…We provide highlights of research investigations over the last five decades in the area of resolved stellar populations. After discussing the early work on the…”
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Two newly identified, relatively old star clusters in the Small Magellanic Cloud by Piatti, Andrés E., Sarajedini, Ata, Geisler, Doug, Gallart, Carme, Wischnjewsky, Marina

“…We present the results on the age and metallicity estimates of the Small Magellanic Cloud (SMC) clusters L110, L112 and L113 obtained from CCD Washington CT1…”
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Wide-Field Survey of Globular Clusters in M31. II. Kinematics of the Globular Cluster System by Lee, Myung Gyoon, Hwang, Ho Seong, Kim, Sang Chul, Park, Hong Soo, Geisler, Doug, Sarajedini, Ata, Harris, William E

“…We present a kinematic analysis of the globular cluster (GC) system in M31, using the velocity data for 504 GCs including those for 150 GCs in our wide-field…”
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Young metal-rich stars in the halo of M82: a tidal dwarf galaxy? by Suwannajak, Chutipong, Sarajedini, Ata

“…ABSTRACT We present Hubble Space Telescope Advanced Camera for Surveys photometry of an arc structure of stars in the southern halo of M82. The structure is…”
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On the determination of Galactic globular cluster metallicities from the periods and V-band amplitudes of their fundamental-mode RR Lyrae variables by Sarajedini, Ata, Gokmen, Sevinc

“…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…”
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Five young star clusters in the outer region of the Small Magellanic Cloud by Piatti, Andrés E., Sarajedini, Ata, Geisler, Doug, Gallart, Carme, Wischnjewsky, Marina

“…Colour–magnitude diagrams in the Washington system are presented for the first time for five star clusters projected on to the outer region of the Small…”
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Tracing the formation history of intermediate-age star clusters in the Small Magellanic Cloud by Piatti, Andrés E., Sarajedini, Ata, Geisler, Doug, Seguel, Juan, Clark, David

“…Colour–magnitude diagrams (CMDs) are presented for the first time for 10 star clusters projected on to the Small Magellanic Cloud (SMC). The photometry was…”
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GLOBULAR CLUSTERS IN THE OUTER GALACTIC HALO: NEW HUBBLE SPACE TELESCOPE/ADVANCED CAMERA FOR SURVEYS IMAGING OF SIX GLOBULAR CLUSTERS AND THE GALACTIC GLOBULAR CLUSTER AGE-METALLICITY RELATION by DOTTER, Aaron, SARAJEDINI, Ata, ANDERSON, Jay

“…Color-magnitude diagrams (CMDs) derived from Hubble Space Telescope (HST) Advanced Camera for Surveys F606W, F814W photometry of six globular clusters (GCs)…”
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The Properties of the Magellanic Bridge Based on OGLE IV RR Lyrae Variables by Wagner-Kaiser, R., Sarajedini, Ata

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