منابع مشابه
The WSRT wide - field H survey II . Local Group features ⋆
We have used the Westerbork array to carry out an unbiased wide-field survey of H emission features, achieving an sensitivity of about 18 mJy/Beam at a velocity resolution of 17 km s−1 over 1800 deg2 and between −1000 < VHel < + 6500 km s−1. The primary data consists of auto-correlation spectra with an effective angular resolution of 49 FWHM. The survey region is centered approximately on...
متن کاملThe WSRT wide - field H survey I . The background galaxy sample
We have used the Westerbork array to carry out an unbiased wide-field survey for H emission features, achieving an sensitivity of about 18 mJy/Beam at a velocity resolution of 17 km s−1 over 1800 deg2 and between −1000 < VHel < + 6500 km s−1. The primary data consists of auto-correlation spectra with an effective angular resolution of 49′ FWHM, although cross-correlation data were also ac...
متن کاملThe WSRT Virgo Filament Survey
In the last few years the realization has emerged that the universal baryons are almost equally distributed by mass in three components: (1) galactic concentrations, (2) a warm-hot intergalactic medium (WHIM) and (3) a diffuse intergalactic medium. These three components are predicted by hydrodynamical simulations and are probed by QSO absorption lines. To observe the WHIM in neutral hydrogen, ...
متن کاملWide-Field Survey Reveals the Variable Sky
Figure 1. A comparison in area and depth between current major surveys and the FSVS. Adapted from the National Optical Astronomy Observatory (NOAO) Deep Wide-Field Survey Web pages (see www. noao.edu/noao/noaodeep/): SDSS, Sloan Digital Sky Survey (York et al. 2000); EIS (deep), ESO Imaging Survey (Deep) (Nonino et al. 1999); Deeprange, (Postman et al. 1998); INT-WAS, INT Wide Angle Survey (McM...
متن کاملThe INT Wide Field Imaging Survey ( WFS )
The 2.5m Isaac Newton Telescope(INT) is currently being used to carry out a major multi-colour, multi-epoch, CCD based wide field survey over an area of ∼100deg 2. The survey parameters have been chosen to maximise scientific return over a wide range of scientific areas and to complement other surveys being carried out elsewhere. Unique aspects of the survey is that it concentrates on regions o...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20034423