Publications (14)
Chemical Cartography with APOGEE: Two-process Parameters and Residual Abundances for 288,789 Stars from Data Release 17
Tawny Sit, David H. Weinberg, Adam Wheeler +4
Stellar abundance measurements are subject to systematic errors that induce extra scatter and artificial correlations in elemental abundance patterns. We derive empirical calibrati…
An unsupervised method for identifying -enriched stars directly from spectra: Li in LAMOST
Adam Wheeler, Melissa Ness, David W. Hogg
Stars with peculiar element abundances are important markers of chemical enrichment mechanisms. We present a simple method, tangent space projection (TSP), for the detection of …
Hundreds of new periodic signals detected in the first year of with the
Joheen Chakraborty, Adam Wheeler, David Kipping
We apply the , a nonparametric signal detection algorithm based on phase dispersion minimization, in a search for low duty-cycle periodic signals in the Transi…
ACACIAS I: Element abundance labels for 192 stars in the dwarf galaxy NGC 6822
Melissa K. Ness, J. Trevor Mendel, Sven Buder +8
The element abundances of local group galaxies connect enrichment mechanisms to galactic properties and serve to contextualise the Milky Way's abundance distributions. Individual s…
A constrained linear model for continuum normalization of stellar spectra
Andrew R. Casey, Adam Wheeler, Megan Bedell +3
Inferring stellar parameters and chemical abundances by forward modeling stellar spectra usually requires a spectral synthesis code, or an emulator constructed from a curated train…
The Nineteenth Data Release of the Sloan Digital Sky Survey
SDSS Collaboration, Gautham Adamane Pallathadka, Mojgan Aghakhanloo +209
Mapping the local and distant Universe is key to our understanding of it. For decades, the Sloan Digital Sky Survey (SDSS) has made a concerted effort to map millions of celestial…
The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
Andrés Almeida, Scott F. Anderson, Maria Argudo-Fernández +151
The eighteenth data release of the Sloan Digital Sky Surveys (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific progr…
The Weird Detector: Flagging periodic, coherent signals of arbitrary shape in time series photometry
Adam Wheeler, David Kipping
By design, model-based approaches for flagging transiting exoplanets in light curves, such as boxed least squares, excel at detecting planets with low S/N at the expense of finding…
Disentangled Representation Learning for Astronomical Chemical Tagging
Damien de Mijolla, Melissa Ness, Serena Viti +1
Modern astronomical surveys are observing spectral data for millions of stars. These spectra contain chemical information that can be used to trace the Galaxy's formation and chemi…
Spectroscopic Follow-up of Young High- Dwarf Star Candidates: Still Likely Genuinely Young
Yuxi Lu, Catherine Manea, Maryum Sayeed +9
The question of whether genuinely young high- stars exist has been discussed for over a decade since their discovery from asteroseismology of giant stars as it is challenging t…
Sloan Digital Sky Survey-V: Pioneering Panoptic Spectroscopy
Juna A. Kollmeier, Hans-Walter Rix, Conny Aerts +217
The Sloan Digital Sky Survey-V (SDSS-V) is pioneering panoptic spectroscopy: it is the first all-sky, multi-epoch, optical-to-infrared spectroscopic survey. SDSS-V is mapping the s…
Chemodynamical signatures of bar resonances in the Galactic disk: current data and future prospects
Adam Wheeler, Irene Abril-Cabezas, Wilma H. Trick +2
The Galactic disk exhibits complex chemical and dynamical substructure thought to be induced by the bar, spiral arms, and satellites. Here, we explore the chemical signatures of ba…
The Swan: Data-Driven Inference of Stellar Surface Gravities for Cool Stars from Photometric Light Curves
Maryum Sayeed, Daniel Huber, Adam Wheeler +1
Stellar light curves are well known to encode physical stellar properties. Precise, automated and computationally inexpensive methods to derive physical parameters from light curve…
Abundances in the Milky Way across five nucleosynthetic channels from 4 million LAMOST stars
Adam Wheeler, Melissa Ness, Sven Buder +10
Large stellar surveys are revealing the chemodynamical structure of the Galaxy across a vast spatial extent. However, the many millions of low-resolution spectra observed to date a…