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We demonstrate the feasibility of determining magnitudes of stars on archival photographic plates using a commercially available scanner. We describe one photometric approach that could serve as a useful example for other studies. In…

The Sloan Digital Sky Survey (SDSS) has scanned the entire region containing the Draco dwarf spheroidal galaxy to 23rd magnitude in g*. We present a catalog of stars found in a 453 square arcminute, elliptical region centered on the Draco…

We present a list of 130 Galactic Open Clusters, found in the All-Sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5). For these clusters we determined and publish a homogeneous set of astrophysical parameters such as size, membership,…

Astrophysics · Physics 2016-08-16 N. V. Kharchenko , A. E. Piskunov , S. Röser , E. Schilbach , R. -D. Scholz

The Century Survey Galactic Halo Project is a photometric and spectroscopic survey from which we select relatively blue stars (V-R<0.30 mag) as probes of the Milky Way halo. The Survey strip spans the range of Galactic latitude 35<b<88 deg,…

Simulated galaxy catalogues have become an essential tool for preparing and exploiting observations from galaxy surveys. They constitute a key ingredient in modelling the systematic uncertainties present in the analysis. However, in order…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-01 I. Tutusaus , P. Fosalba , L. Blot , P. Tallada-Crespí , J. Carretero , F. J. Castander , E. J. Gonzalez , A. Alarcon

Current and future large astronomical surveys will yield multiparameter databases on millions or even billions of objects. The scientific exploitation of these will require powerful, robust, and automated classification tools tailored to…

Astrophysics · Physics 2007-05-23 C. A. L. Bailer-Jones

Wide-angle cameras are widely used in photogrammetry and autonomous systems which rely on the accurate metric measurements derived from images. To find the geometric relationship between incoming rays and image pixels, geometric camera…

Image and Video Processing · Electrical Eng. & Systems 2024-10-16 Jianzhu Huai , Yuan Zhuang , Yuxin Shao , Grzegorz Jozkow , Binliang Wang , Yijia He , Alper Yilmaz

We have exploited ALMA calibration observations to carry out a novel, wide and deep submm survey, ALMACAL. These calibration data comprise a large number of observations of calibrator fields in a variety of frequency bands and array…

Astrophysics of Galaxies · Physics 2016-05-25 I. Oteo , M. A. Zwaan , R. J. Ivison , I. Smail , A. D. Biggs

If properly calibrated, the shapes of galaxy clusters can be used to investigate many physical processes: from feedback and quenching of star formation, to the nature of dark matter. Theorists frequently measure shapes using moments of…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-11 David Harvey , Andrew Robertson , Sut-Ieng Tam , Mathilde Jauzac , Richard Massey , Jason Rhodes , Ian G. McCarthy

We build templates of rotation curves as a function of the $I-$band luminosity via the mass modeling (by the sum of a thin exponential disk and a cored halo profile) of suitably normalized, stacked data from wide samples of local spiral…

Astrophysics of Galaxies · Physics 2018-05-23 A. Lapi , P. Salucci , L. Danese

Weak Gravitational Lensing is a powerful probe of the dark sector of the Universe. One of the main challenges for this technique is the treatment of systematics in the measurement of cosmic shear from galaxy shapes. In an earlier work,…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-15 Claudio Bruderer , Andrina Nicola , Adam Amara , Alexandre Refregier , Jörg Herbel , Tomasz Kacprzak

The online Data Quality Monitoring system (DQM) of the CMS electromagnetic calorimeter (ECAL) is a crucial operational tool that allows ECAL experts to quickly identify, localize, and diagnose a broad range of detector issues that would…

Instrumentation and Detectors · Physics 2023-09-01 Abhirami Harilal , Kyungmin Park , Michael Andrews , Manfred Paulini

Gamma-ray astronomy is able to acquire large data volumes that astronomers use to draw scientific conclusions from. Ensuring the possibility of accessing and utilizing this data also after the lifetime of currently running experiments…

Instrumentation and Methods for Astrophysics · Physics 2025-12-01 C. P. Walther , C. Nigro , D. Elsässer , W. Rhode

Cross-identifications for 14,574 intrinsically luminous galactic stars (mostly OB stars) to objects in the 2MASS survey have been determined using a search box of +/-0.0015 degrees (+/- 5.4 arcsec) in both RA and Dec. Instructions on…

Astrophysics · Physics 2007-05-23 B. Cameron Reed

We identify compact groups of galaxies (CGs) in the IllustrisTNG-300 simulation using a Friends-of-Friends (FoF) algorithm. Our approach is designed to be comparable to systematic CG searches based on spectroscopic surveys, while avoiding…

Astrophysics of Galaxies · Physics 2026-05-12 Seungwu Yoo , Jubee Sohn

The Master Catalogue of stars towards the Magellanic Clouds (MC2) is a multi-wavelength reference catalogue. The current paper presents the first results of the MC2 project. We started with a massive cross-identification of the two recently…

Astrophysics · Physics 2009-11-07 N. Delmotte , C. Loup , D. Egret , M. -R. Cioni , F. Pierfederici

We discuss experiments achievable via monitoring of stellar dynamics near the massive black hole at the Galactic center with a next generation, extremely large telescope (ELT). Given the likely observational capabilities of an ELT and…

Astrophysics · Physics 2009-11-10 Nevin N. Weinberg , Milos Milosavljevic , Andrea M. Ghez

We present a new algorithm for identifying superbubbles in HI column density maps of both observed and simulated galaxies that has only a single adjustable parameter. The algorithm includes an automated galaxy-background separation step to…

Astrophysics of Galaxies · Physics 2024-09-19 Brock Wallin , Benjamin D. Wibking , G. Mark Voit