Search Results - "WEISZ, Daniel R"
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The Orbital Histories of Magellanic Satellites Using Gaia DR2 Proper Motions
Published in The Astrophysical journal (01-04-2020)“…With the release of Gaia DR2, it is now possible to measure the proper motions (PMs) of the lowest-mass, ultrafaint satellite galaxies in the Milky Way's (MW)…”
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Discovery and characterization of 3000+ main-sequence binaries from APOGEE spectra
Published in Monthly notices of the Royal Astronomical Society (01-05-2018)“…Abstract We develop a data-driven spectral model for identifying and characterizing spatially unresolved multiple-star systems and apply it to APOGEE DR13…”
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A Sun-like star orbiting a black hole
Published in Monthly notices of the Royal Astronomical Society (01-01-2023)“…ABSTRACT We report discovery of a bright, nearby ($G = 13.8;\, \, d = 480\, \rm pc$) Sun-like star orbiting a dark object. We identified the system as a black…”
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Where are the most ancient stars in the Milky Way?
Published in Monthly notices of the Royal Astronomical Society (01-10-2018)“…The oldest stars in the Milky Way (MW) bear imprints of the Galaxy's early assembly history. We use FIRE cosmological zoom-in simulations of three MW-mass disc…”
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THE STAR FORMATION HISTORIES OF LOCAL GROUP DWARF GALAXIES. II. SEARCHING FOR SIGNATURES OF REIONIZATION
Published in The Astrophysical journal (10-07-2014)“…We search for signatures of reionization in the star formation histories (SFHs) of 38 Local Group dwarf galaxies (10 super(4) < M sub([sstarf]) < 10 super(9) M…”
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On the Reionization-era Globular Cluster in the Low-mass Galaxy Eridanus II
Published in The Astrophysical journal (01-05-2023)“…Abstract Using color–magnitude diagrams from deep archival Hubble Space Telescope imaging, we self-consistently measure the star formation history of Eridanus…”
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Panchromatic Hubble Andromeda Treasury. XVIII. The High-mass Truncation of the Star Cluster Mass Function
Published in The Astrophysical journal (20-04-2017)“…We measure the mass function for a sample of 840 young star clusters with ages between 10 and 300 Myr observed by the Panchromatic Hubble Andromeda Treasury…”
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The Ionizing Photon Production Efficiency (ξ ion ) of Lensed Dwarf Galaxies at z ∼ 2
Published in The Astrophysical journal (01-06-2020)“…Abstract We measure the ionizing photon production efficiency ( ξ ion ) of low-mass galaxies (10 7.8 –10 9.8 M ⊙ ) at 1.4 < z < 2.7 to better understand the…”
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THE STAR FORMATION HISTORIES OF LOCAL GROUP DWARF GALAXIES. III. CHARACTERIZING QUENCHING IN LOW-MASS GALAXIES
Published in The Astrophysical journal (10-05-2015)“…We explore the quenching of low-mass galaxies (10 super(4) [<, ~] M[lowstar] [<, ~] 10 super(8) M sub([middot in circle])) as a function of lookback time using…”
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Stellar Feedback and Resolved Stellar IFU Spectroscopy in the Nearby Spiral Galaxy NGC 300
Published in The Astrophysical journal (01-03-2020)“…We present MUSE integral field unit (IFU) observations of five individual H ii regions in two giant star-forming complexes in the low-metallicity, nearby dwarf…”
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From Carbon to Cobalt: Chemical Compositions and Ages of z ∼ 0.7 Quiescent Galaxies
Published in The Astrophysical journal (01-05-2023)“…Abstract We present elemental abundance patterns (C, N, Mg, Si, Ca, Ti, V, Cr, Fe, Co, and Ni) for a population of 135 massive quiescent galaxies at z ∼ 0.7…”
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Validating Stellar Abundance Measurements from Multiresolution Spectroscopy
Published in The Astrophysical journal. Supplement series (01-07-2023)“…Abstract Large-scale surveys will provide spectroscopy for ∼50 million resolved stars in the Milky Way and Local Group. However, these data will have a high…”
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Metallicity Distribution Functions of 13 Ultra-faint Dwarf Galaxy Candidates from Hubble Space Telescope Narrowband Imaging
Published in The Astrophysical journal (01-12-2023)“…Abstract We present uniformly measured stellar metallicities of 463 stars in 13 Milky Way (MW) ultra-faint dwarf galaxies (UFDs; M V = −7.1 to −0.8) using…”
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The Heavy Metal Survey: The Evolution of Stellar Metallicities, Abundance Ratios, and Ages of Massive Quiescent Galaxies since z ∼ 2
Published in The Astrophysical journal (01-05-2024)“…Abstract We present the elemental abundances and ages of 19 massive quiescent galaxies at z ∼ 1.4 and z ∼ 2.1 from the Keck Heavy Metal Survey. The ultradeep…”
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THE SUPERNOVA PROGENITOR MASS DISTRIBUTIONS OF M31 AND M33: FURTHER EVIDENCE FOR AN UPPER MASS LIMIT
Published in The Astrophysical journal (10-11-2014)“…Using Hubble Space Telescope photometry to measure star formation histories, we age-date the stellar populations surrounding supernova remnants (SNRs) in M31…”
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Comparing the ancient star formation histories of the Magellanic Clouds
Published in Monthly notices of the Royal Astronomical Society (01-05-2013)“…We present preliminary results from a new Hubble Space Telescope (HST) archival program aimed at tightly constraining the ancient (>4 Gyr ago) star formation…”
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The JWST Resolved Stellar Populations Early Release Science Program. II. Survey Overview
Published in The Astrophysical journal. Supplement series (01-09-2023)“…Abstract We present the JWST Resolved Stellar Populations Early Release Science (ERS) program. We obtained 27.5 hr of NIRCam and NIRISS imaging of three…”
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The JWST Resolved Stellar Populations Early Release Science Program. V. DOLPHOT Stellar Photometry for NIRCam and NIRISS
Published in The Astrophysical journal. Supplement series (01-04-2024)“…Abstract We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including…”
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Erratum: “The Orbital Histories of Magellanic Satellites Using Gaia DR2 Proper Motions” (2020, ApJ, 893, 121)
Published in The Astrophysical journal (01-09-2023)Get full text
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STELLAR CLUSTERINGS AROUND "ISOLATED" MASSIVE YSOs IN THE LMC
Published in The Astrophysical journal (01-01-2017)“…ABSTRACT Observations suggest that there is a significant fraction of O stars in the field of the Milky Way that appear to have formed in isolation or in…”
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