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We present a sensitive $\lambda$20cm VLA continuum survey of the Galactic center region using new and archival data based on multi-configuration observations taken with relatively uniform {\it uv} coverage. The high dynamic range images…

Astrophysics · Physics 2009-05-29 F. Yusef-Zadeh , J. Hewitt , W. Cotton

The Wide-field Nearby Galaxy-cluster Survey (WINGS) is a wide-field multi-wavelength survey of X-ray selected clusters at z =0.04-0.07. The original 34'x34' WINGS field-of- view has now been extended to cover a 1 sq.deg field with both…

We analyse a 154 MHz image made from a 12 h observation with the Murchison Widefield Array (MWA) to determine the noise contribution and behaviour of the source counts down to 30 mJy. The MWA image has a bandwidth of 30.72 MHz, a…

Our aim is to compile a catalog of white dwarfs within 40 parsecs of the Sun, in which newly discovered objects would significantly increase the completeness of the current census. White dwarf candidates are identified from the SUPERBLINK…

Solar and Stellar Astrophysics · Physics 2015-05-20 M. -M. Limoges , P. Bergeron , Sebastien Lepine

We present here medium resolution (\lambda /\Delta\lambda\sim1200) H- and K-band spectra of M type dwarf stars covering the wavelength range 1.50 - 1.80 {\mu}m and 1.95 - 2.45 {\mu}m. The sample includes 53 dwarf stars (M0V-M7V) from new…

Solar and Stellar Astrophysics · Physics 2021-07-30 Dhrimadri Khata , Soumen Mondal , Ramkrishna Das , Supriyo Ghosh , Samrat Ghosh

As of 2012 Jan 21, the Pan-STARRS 1 3\pi Survey has observed the 3/4 of the sky visible from Hawaii with a minimum of 2 and mean of 7.6 observations in 5 filters, g_p1, r_p1, i_p1, z_p1, y_p1. Now at the end of the second year of the…

Spectroscopic surveys allow spatially resolved spectroscopy of galaxies to study their interstellar medium (ISM). However, observations of Galactic H$\alpha$ emission are contaminated by geocoronal H$\alpha$ emission. The latter is known to…

Instrumentation and Methods for Astrophysics · Physics 2026-02-03 Wai-Kiu Ricky Wong , Renbin Yan , Zesen Lin

A systematic study of 80 known pulsars observed at 185 MHz has been conducted using archival incoherent-sum data from the Murchison Widefield Array (MWA). The dataset comprises 48 drift-scan observations from the MWA Voltage Capture System,…

High Energy Astrophysical Phenomena · Physics 2025-10-13 Ting Yu , Hongyu Gong , Zhifu Gao , Zhongli Zhang , Zhigang Wen , Yujie Wang , Tao An

The Galactic CO survey of Dame, Hartmann, & Thaddeus (2001; hereafter DHT) is composed of both large-scale unbiased surveys, mainly concentrated within 10-deg of the Galactic plane, and targeted observations of clouds at higher latitudes.…

Astrophysics · Physics 2007-05-23 T. M. Dame , P. Thaddeus

We describe technical aspects of an astrometric and photometric survey of the North Celestial Cap (NCC), from the Pole (DEC=90 deg) to DEC=80 deg, in support of the TAUVEX mission. This region, at galactic latitudes from ~ 17 deg to ~ 37…

Instrumentation and Methods for Astrophysics · Physics 2014-11-20 Evgeny Gorbikov , Noah Brosch , Cristina Afonso

We simulate the scientific performance of the Wide-Field Infrared Survey Telescope (WFIRST) High Latitude Survey (HLS) on dark energy and modified gravity. The 1.6 year HLS Reference survey is currently envisioned to image 2000 deg$^2$ in…

The scientific data collected during slews of the XMM-Newton satellite are used to construct a slew survey catalogue. This comprises of the order of 4000 sources detected in the EPIC-pn 0.2-12 keV band with exposures of less than 15s and a…

Astrophysics · Physics 2007-05-23 M. J. Freyberg , B. Altieri , D. Bermejo , M. P. Esquej , V. Lazaro , A. M. Read , R. D. Saxton

We develop a framework for a new definition of the Galactic midplane, allowing for tilt (rotation about Galactic azimuth 90deg.), and roll (rotation about Galactic azimuth 0deg.) of the midplane with respect to the current definition.…

Astrophysics of Galaxies · Physics 2019-09-11 L. D. Anderson , Trey V. Wenger , W. P. Armentrout , Dana S. Balser , T. M. Bania

R-band surface photometry is presented for 171 late-type dwarf and irregular galaxies. For a subsample of 46 galaxies B-band photometry is presented as well. We present surface brightness profiles as well as isophotal and photometric…

Astrophysics · Physics 2009-11-07 R. A. Swaters , M. Balcells

Much data on the Galactic polarized radio emission has been gathered in the last five decades. All-sky surveys have been made, but only in narrow, widely spaced frequency bands, and the data are inadequate for the characterization of…

The Stellar Abundances and Galactic Evolution Survey (SAGES) is a multi-band survey that covers the northern sky area of ~12000 deg2. Nanshan One-meter Wide-field Telescope (NOWT) of Xinjiang Astronomical Observatory (XAO) carried out…

The Sloan Digital Sky Survey (SDSS) is collecting photometry and intermediate resolution spectra for ~ 10**5 stars in the thick-disk and stellar halo of the Milky Way. This massive dataset can be used to infer the properties of the stars…

Astrophysics · Physics 2007-05-23 C. Allende Prieto , T. C. Beers , Y. Li , H. J. Newberg , R. Wilhelm , B. Yanny

(Abridged) We present R-band images covering more than 11 square degrees of sky obtained with the KPNO 4-m telescope in preparation for the Spitzer Space Telescope First Look Survey. The FLS was designed to characterize the mid-infrared sky…

Astrophysics · Physics 2009-11-10 Dario Fadda , Buell Jannuzi , Alyson Ford , Lisa J. Storrie-Lombardi

By selecting astrometric and photometric data from the Sloan Digital Sky Survey (SDSS), the L{\'e}pine & Shara Proper Motion North Catalog (LSPM-North), the Two Micron All Sky Survey (2MASS), and the USNO-B1.0 catalog, we use a succession…

Solar and Stellar Astrophysics · Physics 2015-06-04 Conor Sayres , John P. Subasavage , P. Bergeron , P. Dufour , James R. A. Davenport , Yusra AlSayyad , Benjamin M. Tofflemire

The Pan-STARRS1 survey has obtained multi-epoch imaging in five bands (Pan-STARRS1 gps, rps, ips, zps, and yps) on twelve "Medium Deep Fields", each of which spans a 3.3 degree circle. For the period between Apr 2009 and Apr 2011 these…