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We report on a novel search for radio gravitational lenses. Using the Very Large Array, we imaged ten candidates with both dual redshifts in Sloan Digital Sky Survey spectra and 1.4 GHz radio flux >2 mJy in the FIRST survey. The VLA maps…

Virtual Observatory (VO) is a collection of interoperating data archives and software tools. Taking advantages of the latest information technologies, it aims to provide a data-intensively online research environment for astronomers all…

Astrophysics · Physics 2009-11-10 Chenzhou Cui , Yongheng Zhao , Xiaoqian Wang , Jian Sang , Ze Luo

The Plate Archive of the Cordoba Observatory includes 20.000 photographs and spectra on glass plates dating from 1893 to 1983. This contribution describes the work performed since the plate archive was transferred to the Observatory Library…

Instrumentation and Methods for Astrophysics · Physics 2016-07-04 Verónica Lencinas

This paper describes the first data release (DR1) of the VIMOS Ultra Deep Survey (VUDS). The DR1 includes all low-resolution spectroscopic data obtained in 276.9 arcmin2 of the CANDELS-COSMOS and CANDELS-ECFDS survey areas, including…

The Virtual Observatory has reached sufficient maturity for its routine scientific exploitation by astronomers. To prove this statement, here I present a brief description of the complete VO-powered PhD thesis entitled "Galactic and…

Instrumentation and Methods for Astrophysics · Physics 2010-01-12 Ivan Zolotukhin

Operation of the US Virtual Astronomical Observatory shares some issues with modern physical observatories, e.g., intimidating data volumes and rapid technological change, and must also address unique concerns like the lack of direct…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Thomas A. McGlynn , Robert J. Hanisch , G. Bruce Berriman , Aniruddha R. Thakar

The VESPA data access system focuses on applying Virtual Observatory (VO) standards and tools to Planetary Science. Building on a previous EC-funded Europlanet program, it has reached maturity during the first year of a new Europlanet 2020…

The Atlasmaker project is using Grid technology, in combination with NVO interoperability, to create new knowledge resources in astronomy. The product is a multi-faceted, multi-dimensional, scientifically trusted image atlas of the sky,…

Astrophysics · Physics 2007-05-23 R. D. Williams , S. G. Djorgovski , M. T. Feldmann , J. C. Jacob

We present a single-dish mapping algorithm with a number of advantages over traditional techniques. (1) Our algorithm makes use of weighted modeling, instead of weighted averaging, to interpolate between signal measurements. This smooths…

The VLA-COSMOS large project is described and its scientific objective is discussed. We present a catalog of ~ 3,600 radio sources found in the 2deg^2 COSMOS field at 1.4 GHz. The observations in the VLA A and C configuration resulted in a…

Data visualisation is an essential ingredient of scientific analysis, discovery, and communication. Along with a human (to do the looking) and the data (something to look at), an image display device is a key component of any data…

Instrumentation and Methods for Astrophysics · Physics 2024-12-18 Christopher J. Fluke , Hugo K. Walsh , Lewis de Zoete Grundy , Brian Brady

We present a model for generating postage stamp images of synthetic Fanaroff-Riley Class I and Class II radio galaxies suitable for use in simulations of future radio surveys such as those being developed for the Square Kilometre Array.…

Instrumentation and Methods for Astrophysics · Physics 2021-03-24 David J. Bastien , Anna M. M. Scaife , Hongming Tang , Micah Bowles , Fiona Porter

We describe the remote facilities operated by the Southeastern Association for Research in Astronomy (SARA), a consortium of colleges and universities in the US partnered with Lowell Observatory, the Chilean National Telescope Allocation…

We report the results of optical identification of a sample of RC catalog radio sources with the FIRST and SDSS surveys. For 320 sources identified with NVSS and FIRST objects we perform optical identification with the SDSS survey. When…

Cosmology and Nongalactic Astrophysics · Physics 2010-11-11 O. P. Zhelenkova , A. I. Kopylov

Data archiving is one of the most critical issues for modern astronomical observations. With the development of a new generation of radio telescopes, the transfer and archiving of massive remote data have become urgent problems to be…

Instrumentation and Methods for Astrophysics · Physics 2021-12-08 Cong-Ming Shi , Hui Deng , Feng Wang , Ying Mei , Shao-Guang Guo , Chen Yang , Chen Wu , Shou-Lin Wei , Andreas Wicenec

The Simons Observatory (SO) is a Cosmic Microwave Background experiment located in the Atacama Desert in Chile. SO consists of three small aperture telescopes (SATs) and one large aperture telescope (LAT) with a total of 60,000 detectors in…

The explosive growth of multimodal data - spanning text, image, video, spatial, and relational modalities, coupled with the need for real-time semantic search and retrieval over these data - has outpaced the capabilities of existing…

Databases · Computer Science 2025-09-25 Jingyi Yang , Songsong Mo , Jiachen Shi , Zihao Yu , Kunhao Shi , Xuchen Ding , Gao Cong

Self-supervised VO methods have shown great success in jointly estimating camera pose and depth from videos. However, like most data-driven methods, existing VO networks suffer from a notable decrease in performance when confronted with…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Shunkai Li , Xin Wang , Yingdian Cao , Fei Xue , Zike Yan , Hongbin Zha

VANDELS is a uniquely-deep spectroscopic survey of high-redshift galaxies with the VIMOS spectrograph on ESO's Very Large Telescope (VLT). The survey has obtained ultra-deep optical (0.48 < lambda < 1.0 micron) spectroscopy of ~2100…

The Virtual Observatory (VO) simulation standards, Simulation Data Model (SimDM) and Simulation Data Access Layer (SimDAL), establish a framework for the discoverability and dissemination of data created in simulation projects. These…

Digital Libraries · Computer Science 2019-11-26 Chaitra , Sara Bertocco , Marco Molinaro , Sergio Molinari , Antonio Ragagnin , Giuliano Taffoni