Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Nathaniel Paust"'
Autor:
Gregory G. Fahlman, Ivan R. King, S. Davis, Brad M. S. Hansen, Aaron Dotter, Jarrod R. Hurley, Harvey B. Richer, Jason S. Kalirai, Nathaniel Paust, Michael M. Shara, Jay Anderson, R. Michael Rich
Publikováno v:
The Astronomical Journal. 135:2141-2154
We present the CMD from deep HST imaging in the globular cluster NGC 6397. The ACS was used for 126 orbits to image a single field in two colors (F814W, F606W) 5 arcmin SE of the cluster center. The field observed overlaps that of archival WFPC2 data
Autor:
Antonio Marín-Franch, Jay Anderson, Giampaolo Piotto, Brian Chaboyer, Nathaniel Paust, Antonio Aparicio, Steven R. Majewski, Antonino Milone, I. Neill Reid, Alfred Rosenberg, Luigi R. Bedin, Michael H. Siegel, Maren Hempel, Ata Sarajedini
Publikováno v:
The Astrophysical Journal Supplement
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
In this study we compare the photometric data of 34 Milky Way globular clusters, observed within the ACS Treasury Program (PI: Ata Sarajedini) with the corresponding ground-based data, provided by the Photometric Standard Field Catalogs of Stetson (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06069a05439c34f2b4fcb943d20dab05
http://hdl.handle.net/11577/2842765
http://hdl.handle.net/11577/2842765
Autor:
Brian Chaboyer, Alfred Rosenberg, Giampaolo Piotto, I. Neill Reid, Antonio Marín-Franch, Nathaniel Paust, Jay Anderson, Steven R. Majewski, David R. Law, Aaron Dotter, Michael H. Siegel, Antonino Milone, Ata Sarajedini, Maren Hempel, Luigi R. Bedin, Antonio Aparicio
Publikováno v:
Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
We use observations from the ACS study of Galactic globular clusters to investigate the spatial distribution of the inner regions of the disrupting Sagittarius dwarf spheroidal galaxy (Sgr). We combine previously published analyses of four Sgr member
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f271aa70793b1fd6d7439201fa1c5dce
Autor:
Luigi R. Bedin, Jay Anderson, I. Neill Reid, Antonio Marín-Franch, Aaron Dotter, Steven R. Majewski, Brian Chaboyer, Antonio Aparicio, Nathaniel Paust, Ata Sarajedini, Michael H. Siegel, Antonino Milone, Giampaolo Piotto, Alfred Rosenberg
The horizontal branch (HB) morphology of globular clusters (GCs) is most strongly influenced by metallicity. The second parameter phenomenon acknowledges that metallicity alone is not enough to describe the HB morphology of all GCs. In particular, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86fe717113dd436dcc9c65200a32f776
http://hdl.handle.net/11577/2427047
http://hdl.handle.net/11577/2427047
Autor:
Antonio Aparicio, Antonio Marín-Franch, Giampaolo Piotto, Alfred Rosenberg, Brian Chaboyer, Ata Sarajedini, Michael Siegel, Jay Anderson, Luigi R. Bedin, Aaron Dotter, Maren Hempel, Ivan King, Steven Majewski, Antonino P. Milone, Nathaniel Paust, I. Neill Reid, Giuliana Giobbi, Amedeo Tornambe, Gabriella Raimondo, Marco Limongi, L. A. Antonelli, Nicola Menci, Enzo Brocato
Publikováno v:
AIP Conference Proceedings.
The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on observations from this program, we have measured precise relative age
Autor:
Aaron Dotter, Alfred Rosenberg, Maren Hempel, Nathaniel Paust, Antonio Marín-Franch, Antonino Milone, Giampaolo Piotto, Steven R. Majewski, Jay Anderson, Ata Sarajedini, Antonio Aparicio, Brian Chaboyer, I. Neill Reid, Michael H. Siegel, Luigi R. Bedin
We have used observations obtained as part of the Hubble Space Telescope/ACS Survey of Galactic globular clusters (GCs) to construct a color-magnitude diagram for the bulge cluster, NGC 6366. The luminosity function derived from those data extends to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c53329e0f02200227e37ea1741da1ac7
http://hdl.handle.net/11577/2522216
http://hdl.handle.net/11577/2522216
Autor:
Brian Chaboyer, Ata Sarajedini, I. Neill Reid, Jay Anderson, Aaron Dotter, Alfred Rosenberg, Giampaolo Piotto, Steven R. Majewski, Ivan R. King, Nathaniel Paust, Luigi R. Bedin, Maren Hempel, Michael H. Siegel, Antonino Milone, Antonio Aparicio, Antonio Marín-Franch
The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on observations from this program, we have measured precise relative age
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f2976519adc9c24013708dfb3cdfe9b
http://arxiv.org/abs/0812.4541
http://arxiv.org/abs/0812.4541
Autor:
Antonino Milone, Alfred Rosenberg, Steven R. Majewski, I. Neill Reid, Ata Sarajedini, Antonio Aparicio, Nathaniel Paust, Luigi R. Bedin, Giampaolo Piotto, Michael H. Siegel, Jay Anderson, Brian Chaboyer, Ivan R. King
The ACS Survey of Globular Clusters has used HST's Wide-Field Channel to obtain uniform imaging of 65 of the nearest globular clusters to provide an extensive homogeneous dataset for a broad range of scientific investigations. The survey goals requir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46c1ae3a38b08c5d2e268f8b971f495d
http://hdl.handle.net/11577/2268907
http://hdl.handle.net/11577/2268907
Autor:
M. H. Siegel, Maren Hempel, I. N. Reid, Brian Chaboyer, Nathaniel Paust, Ata Sarajedini, Luigi R. Bedin, Ivan R. King, Antonino Milone, Alfred Rosenberg, Aaron Dotter, Steven R. Majewski, Giampaolo Piotto, Antonio Marín-Franch, Antonio Aparicio, Jay Anderson
Photometry with HST's ACS reveals that the subgiant branch (SGB) of the globular cluster NGC 1851 splits into two well-defined branches. If the split is due only to an age effect, the two SGBs would imply two star formation episodes separated by $\si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2484e7d9fc6f072a414bac547c224c
Publikováno v:
Publications of the Astronomical Society of the Pacific. :000-000
We present new $BVI$ photometry containing 40,000 stars of the Galactic globular cluster M15 (NGC 7078) covering a $25 \times 25$ arcminute area centered on the cluster with a magnitude range from the tip of the Red Giant Branch to three magnitudes b