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The CMS Collaboration is preparing to build replacement endcap calorimeters for the HL-LHC era. The new high-granularity calorimeter (HGCAL) is, as the name implies, a highly-granular sampling calorimeter with approximately six million…

Instrumentation and Detectors · Physics 2022-12-21 Thorben Quast

This paper introduces a new methodology for detecting anomalies in time series data, with a primary application to monitoring the health of (micro-) services and cloud resources. The main novelty in our approach is that instead of modeling…

Machine Learning · Computer Science 2020-07-31 Fadhel Ayed , Lorenzo Stella , Tim Januschowski , Jan Gasthaus

We present and analyze a series of synthetic galaxy survey fields based on the IllustrisTNG Simulation suite. With the Illustris public data release and JupyterLab service, we generated a set of twelve lightcone catalogs covering areas from…

Astrophysics of Galaxies · Physics 2022-11-30 Gregory F. Snyder , Theodore Pena , L. Y. Aaron Yung , Caitlin Rose , Jeyhan Kartaltepe , Harry Ferguson

I show that the standard microlensing technique to measure the angular radius of a star using color/surface-brightness relations can be inverted, via late-time proper motion measurements, to calibrate these relations. The method is…

Solar and Stellar Astrophysics · Physics 2015-06-22 Andrew Gould

We present a new technique for creating mock catalogues of the individual stars that make up the accreted component of stellar haloes in cosmological simulations and show how the catalogues can be used to test and interpret observational…

Astrophysics of Galaxies · Physics 2014-11-27 Ben Lowing , Wenting Wang , Andrew Cooper , Rachel Kennedy , John Helly , Carlos Frenk , Shaun Cole

The DAMIC experiment employs large-area, thick charge-coupled devices (CCDs) to search for the interactions of low-mass dark matter particles in the galactic halo with silicon atoms in the CCD target. From 2017 to 2019, DAMIC collected data…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-04 Alvaro E. Chavarria

We present a comprehensive re-analysis of stellar photometric variability in the field of the open cluster M37 following the application of a new photometry and de-trending method to MMT/Megacam image archive. This new analysis allows a…

Solar and Stellar Astrophysics · Physics 2015-05-19 S. -W. Chang , Y. -I. Byun , J. D. Hartman

We present a digital catalog of images of 113 galaxies in this paper. These galaxies are all nearby, bright, large and well resolved. All images were recorded with charge coupled devices (CCDs) at the Palomar Observatory with the 1.5 meter…

Astrophysics · Physics 2010-04-06 Zsolt Frei , Puragra Guhathakurta , James E. Gunn , J. Anthony Tyson

We present the Cardinal mock galaxy catalogs, a new version of the Buzzard simulation that has been updated to support ongoing and future cosmological surveys, including DES, DESI, and LSST. These catalogs are based on a one-quarter sky…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-23 Chun-Hao To , Joseph DeRose , Risa H. Wechsler , Eli Rykoff , Hao-Yi Wu , Susmita Adhikari , Elisabeth Krause , Eduardo Rozo , David H. Weinberg

With a primary goal of conducting precision weak lensing measurements from space, the COSMOS survey has imaged the largest contiguous area observed by the Hubble Space Telescope (HST) to date using the Advanced Camera for Surveys (ACS).…

Building a comprehensive catalog of galaxy clusters is a fundamental task for the studies on the structure formation and galaxy evolution. In this paper, we present COSMIC (Cluster Optical Search using Machine Intelligence in Catalogs), an…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-29 Da-Chuan Tian , Yang Yang , Zhong-Lue Wen , Jun-Qing Xia

DIRECT is a project to obtain directly the distances to two Local Group galaxies, M31 and M33, which occupy a crucial position near the bottom of the cosmological distance ladder. As the first step of the DIRECT project we have searched for…

Astrophysics · Physics 2009-11-06 B. J. Mochejska , J. Kaluzny , K. Z. Stanek , D. D. Sasselov , A. H. Szentgyorgyi

The Core Cosmology Library (CCL) provides routines to compute basic cosmological observables to a high degree of accuracy, which have been verified with an extensive suite of validation tests. Predictions are provided for many cosmological…

Sophisticated analysis of modern large-scale structure surveys requires mock catalogs. Mock catalogs are used to optimize survey design, test reduction and analysis pipelines, make theoretical predictions for basic observables and propagate…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Martin White , Jeremy L Tinker , Cameron K McBride

Using twin ground-based telescopes, the Two Micron All Sky Survey (2MASS) scanned both equatorial hemi- spheres, detecting more than 500 million stars and resolving more than 1.5 million galaxies in the near-infrared (1 - 2.2 microns)…

Astrophysics · Physics 2009-11-10 Thomas Jarrett

The wish list of astronomers includes a tool that reveals quenching of star formation in galaxies directly as it proceeds. Here, we present a proof-of-concept for a new quenching-and-bursting diagnostic, a "change index" for star formation,…

Astrophysics of Galaxies · Physics 2019-04-19 Christian Wolf , Jacob Golding , Christopher A. Onken , Li Shao

To determine the local dark matter density (LDMD) of the solar system is a classical problem in astronomy. Recently, a novel method of determining the LDMD from stellar distribution and vertical velocity dispersion profiles perpendicular to…

Astrophysics of Galaxies · Physics 2015-06-15 Shigeki Inoue , Naoteru Gouda

Taking advantage of $\sim4700$ deg$^2$ optical coverage of the Southern sky offered by the VST ATLAS survey, we construct a new catalogue of photometrically selected galaxy groups and clusters using the {\sc orca} cluster detection…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-08 B. Ansarinejad , D. N. A. Murphy , T. Shanks , N. Metcalfe
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