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Stacked Reverberation Mapping of High Redshift Quasars in DESI. I. Feasibility Analysis
Rahma Alfarsy, R. E. A. Canning, Eva-Maria Mueller +49
The broad line region of quasars has long been probed by reverberation mapping techniques that measure time lags between continuum and broad emission line variations. Stacked rever…
JWST reveals how black holes are fed: kiloparsec-scale multiphase filaments feed sub-kiloparsec circumnuclear disks
Julie Hlavacek-Larrondo, Hyunseop Choi, Minghao Guo +35
The Centaurus cluster is one of the most important archetypes of radio-mode AGN feedback, with its central galaxy, NGC 4696, launching powerful jets that inflate X-ray cavities and…
ODIN: Confirmation and 3D Reconstruction of Six Massive Protoclusters at Cosmic Noon
Ashley Ortiz, Vandana Ramakrishnan, Kyoung-Soo Lee +64
Protoclusters represent sites of accelerated galaxy formation and extreme astrophysical activity characteristic of dense environments. Identifying massive protoclusters and mapping…
Initial Investigations of the Outskirts of XLSSC 122
Eleanore. B. Todd, Jon. P. Willis, Rebecca. E. A. Canning +7
We investigate the redshift 1.98 galaxy cluster XLSSC 122 using the Hubble Space Telescope (HST) from the core of the cluster out to 3 Mpc, a scale equivalent to 10 times the R500…
Tripling the Census of Dwarf AGN Candidates Using DESI Early Data
Ragadeepika Pucha, S. Juneau, Arjun Dey +46
Using early data from the Dark Energy Spectroscopic Instrument (DESI) survey, we search for AGN signatures in 410,757 line-emitting galaxies. By employing the BPT emission-line rat…
Identifying Quasars from the DESI Bright Galaxy Survey
S. Juneau, R. Canning, D. M. Alexander +56
The Dark Energy Spectroscopic Instrument (DESI) cosmology survey includes a Bright Galaxy Survey (BGS) which will yield spectra for over ten million bright galaxies (r<20.2 AB mag)…
Emission Line Predictions for Mock Galaxy Catalogues: a New Differentiable and Empirical Mapping from DESI
Ashod Khederlarian, Jeffrey A. Newman, Brett H. Andrews +43
We present a simple, differentiable method for predicting emission line strengths from rest-frame optical continua using an empirically-determined mapping. Extensive work has been…
A Large Sample of Extremely Metal-poor Galaxies at Identified from the DESI Early Data
Hu Zou, Jipeng Sui, Amélie Saintonge +32
Extremely metal-poor galaxies (XMPGs) at relatively low redshift are excellent laboratories for studying galaxy formation and evolution in the early universe. Much effort has been…
A striking relationship between dust extinction and radio detection in DESI QSOs: evidence for a dusty blow-out phase in red QSOs
V. A. Fawcett, D. M. Alexander, A. Brodzeller +39
We present the first eight months of data from our secondary target program within the ongoing Dark Energy Spectroscopic Instrument (DESI) survey. Our program uses a mid-infrared a…
Changing-look Active Galactic Nuclei from the Dark Energy Spectroscopic Instrument. I.Sample from the Early Data
Wei-Jian Guo, Hu Zou, Victoria Anne Fawcett +34
Changing-look Active Galactic Nuclei (CL AGN) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines, associated with a transient…
Detecting and Characterizing Mg II absorption in DESI Survey Validation Quasar Spectra
Lucas Napolitano, Agnesh Pandey, Adam D. Myers +33
We present findings of the detection of Magnesium II (Mg II, λ = 2796, 2803 Å) absorbers from the early data release of the Dark Energy Spectroscopic Instrument (DESI). DESI is pro…
Galaxy populations in the most distant SPT-SZ clusters -- II. Galaxy structural properties in massive clusters at 1.4<z<1.7
V. Strazzullo, M. Pannella, J. J. Mohr +12
We investigate structural properties of massive galaxy populations in the central regions of five very massive galaxy clusters at z~1.4-1.7 from the South Pole Telescope Sunyaev Ze…
The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra
David M. Alexander, Tamara M. Davis, E. Chaussidon +69
A key component of the Dark Energy Spectroscopic Instrument (DESI) survey validation (SV) is a detailed visual inspection (VI) of the optical spectroscopic data to quantify key sur…
The XXL survey. XLIX. Linking the members star formation histories to the cluster mass assembly in the z=1.98 galaxy cluster XLSSC 122
A. Trudeau, J. P. Willis, D. Rennehan +5
The most massive protoclusters virialize to become clusters at , which is also a critical epoch for the evolution of their member galaxies. XLSSC 122 is a galaxy…
The Evolution of AGN Activity in Brightest Cluster Galaxies
T. Somboonpanyakul, M. McDonald, A. Noble +73
We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations on the full 2500 deg^2 South Pole Telescope (SPT)-SZ cluster sample. We describe a…
The DESI PRObabilistic Value-Added Bright Galaxy Survey (PROVABGS) Mock Challenge
ChangHoon Hahn, K. J. Kwon, Rita Tojeiro +16
The PRObabilistic Value-Added Bright Galaxy Survey (PROVABGS) catalog will provide measurements of galaxy properties, such as stellar mass (), star formation rate (…
Quiescent galaxies in a virialized cluster at redshift 2: Evidence for accelerated size-growth
E. Noordeh, R. E. A. Canning, J. P. Willis +4
We present an analysis of the galaxy population in XLSSC 122, an X-ray selected, virialized cluster at redshift . We utilize HST WFC3 photometry to characterize the activit…
Rapid build-up of the stellar content in the protocluster core SPT234956 at
Ryley Hill, Scott Chapman, Kedar A. Phadke +22
The protocluster SPT234956 at contains one of the most actively star-forming cores known, yet constraints on the total stellar mass of this system are highly uncer…
The environmental dependence of X-ray AGN activity at
E. Noordeh, R. E. A. Canning, A. King +9
We present an analysis of the X-ray Active Galactic Nucleus (AGN) population in a sample of seven massive galaxy clusters in the redshift range . We utilize high-quali…
Spectroscopic confirmation of a mature galaxy cluster at redshift two
J. P. Willis, R. E. A. Canning, E. S. Noordeh +6
Galaxy clusters are the most massive virialized structures in the Universe and are formed through the gravitational accretion of matter over cosmic time. The discovery of an evolve…
Galaxy populations in the most distant SPT-SZ clusters - I. Environmental quenching in massive clusters at
V. Strazzullo, M. Pannella, J. J. Mohr +25
We present first results from a galaxy population study in the highest redshift galaxy clusters identified in the 2500 deg South Pole Telescope Sunyaev Zel'dovich effect (SPT-S…
Spectroscopic Confirmation of Five Galaxy Clusters at z > 1.25 in the 2500 sq. deg. SPT-SZ Survey
G. Khullar, L. E. Bleem, M. B. Bayliss +29
We present spectroscopic confirmation of five galaxy clusters at , discovered in the deg South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) surv…
A very deep Chandra view of metals, sloshing and feedback in the Centaurus cluster of galaxies
J. S. Sanders, A. C. Fabian, G. B. Taylor +6
We examine deep Chandra X-ray observations of the Centaurus cluster of galaxies, Abell 3526. Applying a gradient magnitude filter reveals a wealth of structure, from filamentary so…