Although the Sloan Digital Sky Survey (SDSS) was primarily envisioned as a tool for understanding the nature of the `high redshift' universe, significant...
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PublicationPhysical Parameters of SDSS Stars, the Nature of the SDSS `Ring around the Galaxy', and the SEGUE Project
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NewsPossible evidence of planet formation found in the Orion Nebula
International research led by scientists at the Instituto de Astrofísica de Canarias (IAC) has shown the existence of solid sulphur compounds in HH514, a jet of...
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PublicationSEGUE-2: Old Milky Way Stars Near and Far
The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2) obtained 128,288 low-resolution spectra (R ~ 1800) of 118,958 unique stars in the...
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PublicationThe Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable
Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric...
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PublicationThe Central Star of NGC 2346 as a Clue to Binary Evolution through the Common Envelope Phase
We present an analysis of the binary central star of the planetary nebula NGC 2346 based on archival data from the International Ultraviolet Explorer, and new...
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PublicationThe Open Cluster Chemical Abundances and Mapping Survey. VI. Galactic Chemical Gradient Analysis from APOGEE DR17
The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the...
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PublicationThe Open Cluster Chemical Abundances and Mapping Survey. VII. APOGEE DR17 [C/N]-Age Calibration
Large-scale surveys open the possibility to investigate Galactic evolution both chemically and kinematically; however, reliable stellar ages remain a major...
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PublicationThe Similarity of Abundance Ratio Trends and Nucleosynthetic Patterns in the Milky Way Disk and Bulge
We compare abundance ratio trends in a sample of ∼11,000 Milky Way bulge stars (R GC < 3 kpc) from the Apache Point Observatory Galactic Evolution Experiment...