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Author

D. Schlegel

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3 papers indexed here

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Preprint Oct 2026

The Evolution of the Circumgalactic Medium after a starburst in DESI Post-Starburst Galaxies

We present a statistical study of the cool circumgalactic medium (CGM) around massive post-starburst galaxies, traced by Mg II $\lambda\lambda2796,2803$ absorption in background quasar spectra from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2. Cross-matching ~1.98 million quasar sightlines with lumino...

Zoe Harvey, Sahyadri Krishna, R. Tojeiro et al. · 0 citations
Review Oct 2026

The scale of homogeneity in DESI Data Release 1

We present measurements of the scale of cosmic homogeneity using the first data release (DR1) of the Dark Energy Spectroscopic Instrument (DESI), the largest publicly available spectroscopic extragalactic survey to date. Using a counts-in-spheres estimator applied to nearly 5 million galaxies and quasars across six ind...

C. Howlett, L. Giani, Elizabeth G. O'Brien et al. · 0 citations
Preprint Sep 2026

Intrinsic Tidal Shear at the Largest Scales: Galaxy Multiplet Alignment in DESI DR2

We measure the intrinsic alignment (IA) of galaxy multiplets with the large-scale tidal field traced by galaxy positions in DESI Data Release 2. Using the BGS, LRG, and ELG samples spanning $0.01<z<1.6$, we optimize the scales which define multiplets in each sample to minimize measurement noise. We measure multiplet ti...

C. Lamman, J. Aguilar, S. Ahlen et al. · 0 citations

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