Search Results - "Beaton, Rachael"
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The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
Published in The Astrophysical journal (01-09-2019)“…Abstract We present a new and independent determination of the local value of the Hubble constant based on a calibration of the tip of the red giant branch…”
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The Exploration of Local VolumE Satellites (ELVES) Survey: A Nearly Volume-limited Sample of Nearby Dwarf Satellite Systems
Published in The Astrophysical journal (01-07-2022)“…Abstract We present the final sample of the Exploration of Local VolumE Satellites (ELVES) survey, a survey of the dwarf satellites of a nearly volume-limited…”
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Wide-field Survey of Dwarf Satellite Systems around 10 Hosts in the Local Volume
Published in The Astrophysical journal (10-03-2020)“…We present the results of an extensive search for dwarf satellite galaxies around 10 primary host galaxies in the Local Volume (LV, D < 12 Mpc) using archival…”
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Structures of Dwarf Satellites of Milky Way-like Galaxies: Morphology, Scaling Relations, and Intrinsic Shapes
Published in The Astrophysical journal (01-12-2021)“…Abstract The structure of a dwarf galaxy is an important probe of the effects of stellar feedback and environment. Using an unprecedented sample of 223…”
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Calibration of the Tip of the Red Giant Branch
Published in The Astrophysical journal (01-03-2020)“…The tip of the red giant branch (TRGB) method provides one of the most accurate and precise means of measuring the distances to nearby galaxies. Here we…”
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ELVES II: Globular Clusters and Nuclear Star Clusters of Dwarf Galaxies: the Importance of Environment
Published in The Astrophysical journal (01-03-2022)“…Abstract We present the properties of the globular clusters (GCs) and nuclear star clusters (NSCs) of low-mass (10 5.5 < M ⋆ < 10 8.5 M ⊙ ) early-type…”
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Kinematics and Metallicity of the Dwarf Spheroidal Galaxy Andromeda XVIII
Published in The Astrophysical journal (01-09-2024)“…Abstract Andromeda XVIII is an isolated dwarf galaxy 579 kpc away from the nearest large galaxy, M31. It is a candidate “backsplash galaxy” that might have…”
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Using Surface Brightness Fluctuations to Study Nearby Satellite Galaxy Systems: Calibration and Methodology
Published in The Astrophysical journal (01-07-2019)“…We explore the use of ground-based surface brightness fluctuation (SBF) measurements to constrain distances to nearby dwarf galaxies. Using archival CFHT…”
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THE M31 VELOCITY VECTOR. II. RADIAL ORBIT TOWARD THE MILKY WAY AND IMPLIED LOCAL GROUP MASS
Published in The Astrophysical journal (01-07-2012)“…We determine the velocity vector of M31 with respect to the Milky Way and use this to constrain the mass of the Local Group, based on Hubble Space Telescope…”
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Standard Galactic field RR Lyrae II: a Gaia DR2 calibration of the period–Wesenheit–metallicity relation
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)“…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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Radial Distributions of Dwarf Satellite Systems in the Local Volume
Published in The Astrophysical journal (01-10-2020)“…The radial spatial distribution of low-mass satellites around a Milky Way (MW)-like host is an important benchmark for simulations of small-scale structure…”
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Elemental Abundances in M31: Individual and Coadded Spectroscopic [Fe/H] and [α/Fe] throughout the M31 Halo with SPLASH
Published in The Astrophysical journal (01-07-2023)“…Abstract We present spectroscopic chemical abundances of red giant branch stars in Andromeda (M31), using medium-resolution ( R ∼ 6000) spectra obtained via…”
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THE CARNEGIE-CHICAGO HUBBLE PROGRAM. I. AN INDEPENDENT APPROACH TO THE EXTRAGALACTIC DISTANCE SCALE USING ONLY POPULATION II DISTANCE INDICATORS
Published in The Astrophysical journal (01-12-2016)“…ABSTRACT We present an overview of the Carnegie-Chicago Hubble Program, an ongoing program to obtain a 3% measurement of the Hubble constant ( H 0 ) using…”
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Discovery and Early Evolution of ASASSN-19bt, the First TDE Detected by TESS
Published in The Astrophysical journal (01-10-2019)“…We present the discovery and early evolution of ASASSN-19bt, a tidal disruption event (TDE) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN)…”
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TESS Stellar Rotation up to 80 Days in the Southern Continuous Viewing Zone
Published in The Astrophysical journal (01-02-2024)“…Abstract The Transiting Exoplanet Survey Satellite (TESS) mission delivers time-series photometry for millions of stars across the sky, offering a probe into…”
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The chemical characterization of halo substructure in the Milky Way based on APOGEE
Published in Monthly notices of the Royal Astronomical Society (01-04-2023)“…ABSTRACT Galactic haloes in a Λ-CDM universe are predicted to host today a swarm of debris resulting from cannibalized dwarf galaxies. The chemodynamical…”
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Identifying Sagittarius Stream Stars by Their APOGEE Chemical Abundance Signatures
Published in The Astrophysical journal (10-02-2019)“…The SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey provides precise chemical abundances of 18 chemical elements for ∼176,000…”
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The Carnegie–Chicago Hubble Program. III. The Distance to NGC 1365 via the Tip of the Red Giant Branch
Published in The Astrophysical journal (01-01-2018)“…Abstract The Carnegie–Chicago Hubble Program (CCHP) seeks to anchor the distance scale of Type Ia supernovae via the Tip of the Red Giant Branch (TRGB) method…”
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The Luminosity Profile and Structural Parameters of the Andromeda Galaxy
Published in The Astrophysical journal (20-09-2011)“…We have constructed an extended composite luminosity profile for the Andromeda galaxy, M31, and have decomposed it into three basic luminous structural…”
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Old-Aged Primary Distance Indicators
Published in Space science reviews (01-12-2018)“…Old-aged stellar distance indicators are present in all Galactic structures (halo, bulge, disk) and in galaxies of all Hubble types and, thus, are immensely…”
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