Search Results - "Rich, Jeffrey A"
-
1
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…”
Get full text
Journal Article -
2
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…”
Get full text
Journal Article -
3
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…”
Get full text
Journal Article -
4
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…”
Get full text
Journal Article -
5
The Carnegie–Chicago Hubble Program. V. The Distances to NGC 1448 and NGC 1316 via the Tip of the Red Giant Branch
Published in The Astrophysical journal (20-10-2018)“…Abstract The Carnegie–Chicago Hubble Program (CCHP) is recalibrating the extragalactic SN Ia distance scale using exclusively Population II stars. This effort…”
Get full text
Journal Article -
6
The TYPHOON Stellar Population Synthesis Survey. I. The Young Stellar Population of the Great Barred Spiral NGC 1365
Published in The Astrophysical journal (01-01-2024)“…Abstract We analyze TYPHOON long-slit-absorption line spectra of the starburst barred spiral galaxy NGC 1365 obtained with the Progressive Integral Step Method…”
Get full text
Journal Article -
7
The Carnegie Chicago Hubble Program. VI. Tip of the Red Giant Branch Distances to M66 and M96 of the Leo I Group
Published in The Astrophysical journal (11-09-2019)“…We determine the distances to the Type Ia supernova host galaxies M66 (NGC 3627) and M96 (NGC 3368) of the Leo I Group using the Tip of the Red Giant Branch…”
Get full text
Journal Article -
8
GOALS-JWST: Hidden Star Formation and Extended PAH Emission in the Luminous Infrared Galaxy VV 114
Published in Astrophysical journal. Letters (01-11-2022)“…Abstract James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) images of the luminous infrared (IR) galaxy VV 114 are presented. This redshift…”
Get full text
Journal Article -
9
GOALS-JWST: Mid-infrared Molecular Gas Excitation Probes the Local Conditions of Nuclear Star Clusters and the Active Galactic Nucleus in the LIRG VV 114
Published in The Astrophysical journal (01-05-2024)“…Abstract The enormous increase in mid-IR sensitivity and spatial and spectral resolution provided by the JWST spectrographs enables, for the first time,…”
Get full text
Journal Article -
10
GOALS-JWST: Revealing the Buried Star Clusters in the Luminous Infrared Galaxy VV 114
Published in Astrophysical journal. Letters (01-02-2023)“…Abstract We present the results of a James Webb Space Telescope NIRCam investigation into the young massive star cluster (YMC) population in the luminous…”
Get full text
Journal Article -
11
GOALS-JWST: Unveiling Dusty Compact Sources in the Merging Galaxy IIZw096
Published in Astrophysical journal. Letters (01-11-2022)“…Abstract We have used the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST) to obtain the first spatially resolved, mid-infrared images…”
Get full text
Journal Article -
12
Shocked gas in IRAS F17207-0014: ISM collisions and outflows
Published in Monthly notices of the Royal Astronomical Society (11-04-2015)“…We combine optical and near-infrared adaptive optics-assisted integral field observations of the merging ultraluminous infrared galaxies IRAS F17207-0014 from…”
Get full text
Journal Article -
13
GOALS-JWST: NIRCam and MIRI Imaging of the Circumnuclear Starburst Ring in NGC 7469
Published in Astrophysical journal. Letters (01-01-2023)“…Abstract We present James Webb Space Telescope (JWST) imaging of NGC 7469 with the Near-Infrared Camera and the Mid-InfraRed Instrument. NGC 7469 is a nearby,…”
Get full text
Journal Article -
14
A NEW CEPHEID DISTANCE MEASUREMENT AND METHOD FOR NGC 6822
Published in The Astrophysical journal (20-10-2014)“…We present a revised distance to the nearby galaxy NGC 6822 using a new multi-band fit to both previously published and new optical, near-, and mid-infrared…”
Get full text
Journal Article -
15
Tracing the Ionization Structure of the Shocked Filaments of NGC 6240
Published in The Astrophysical journal (01-12-2021)“…Abstract We study the ionization and excitation structure of the interstellar medium in the late-stage gas-rich galaxy merger NGC 6240 using a suite of…”
Get full text
Journal Article -
16
The Carnegie-Chicago Hubble Program. II. The Distance to IC 1613: The Tip of the Red Giant Branch and RR Lyrae Period–luminosity Relations
Published in The Astrophysical journal (20-08-2017)“…Abstract IC 1613 is an isolated dwarf galaxy within the Local Group. Low foreground and internal extinction, low metallicity, and low crowding make it an…”
Get full text
Journal Article -
17
The Chemical Evolution Carousel of Spiral Galaxies: Azimuthal Variations of Oxygen Abundance in NGC1365
Published in The Astrophysical journal (01-09-2017)“…The spatial distribution of oxygen in the interstellar medium of galaxies is the key to understanding how efficiently metals that are synthesized in massive…”
Get full text
Journal Article -
18
The Carnegie–Chicago Hubble Program. IX. Calibration of the Tip of the Red Giant Branch Method in the Megamaser Host Galaxy, NGC 4258 (M106)
Published in The Astrophysical journal (01-01-2021)“…Abstract In the nearby galaxy NGC 4258, the well-modeled orbital motion of H 2 O masers about its supermassive black hole provides the means to measure a…”
Get full text
Journal Article -
19
Grading Osteoarthritic Changes of the Zygapophyseal Joints from Radiographs: A Reliability Study
Published in Journal of manipulative and physiological therapeutics (01-06-2015)“…Abstract Objective This study tested the reliability of a 5-point ordinal scale used to grade the severity of degenerative changes of zygapophyseal (Z) joints…”
Get full text
Journal Article -
20
The Carnegie-Chicago Hubble Program. VII. The Distance to M101 via the Optical Tip of the Red Giant Branch Method
Published in The Astrophysical journal (10-11-2019)“…Abstract The Carnegie-Chicago Hubble Program (CCHP) is building a direct path to the Hubble constant ( H 0 ) using Population II stars as the calibrator of the…”
Get full text
Journal Article