ST ScI Preprint #1380 . Authors: A. A. Suchkov, 1 M. McMaster 1 We find evidence for the presence of a population of numerous binaries with comparably bright components (C-binaries) among HIPPARCOS F stars that are flagged in the HIPPARCOS catalogue as single. ... The criterion is based on comparison of absolute magnitude M V obtained from the HIPPARCOS parallax and Johnson V magnitude with absolute magnitude derived from the dereddened uvby luminosity index c 0 , M c 0 . ...

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... Flux density at 1 GHz (/Jy): 25 . ... ADS . ... Caswell et al. 1975, A&A, 45, 239. ... Arecibo S 430 MHz =82?51 Jy, also Algonquin 46-m at 10.6 GHz (3': S=12?2 Jy), and Haystack 36-m at 15.5 GHz (2'.3: S=8.5?3.0 Jy). ... 1985, ApJ, 296, 461. VLA at 1.4 and 5 GHz (8''), plus Einstein observations. ... VLA at 327 MHz (3'.5?3'.6: S=46.3 Jy). ... ASCA and ROSAT observations. ... VLA at 1.5 GHz (6".9?6".6) and 4.8 GHz (46".4?5".6), including polarisation and comparison with ROSAT image. ...

... Modules . ... Classes . Files . ... File List . File Members . components . ... National Radio Astronomy Observatory 00023 //# 520 Edgemont Road 00024 //# Charlottesville, VA 22903-2475 USA 00025 //# 00026 //# $Id: ComponentModels.h 20691 2009-07-14 03:13:54Z Malte.Marquarding $ 00027 00028 #ifndef COMPONENTS _ COMPONENTMODELS _H 00029 #define COMPONENTS _ COMPONENTMODELS _H 00030 00031 # include components / ComponentModels /ComponentType.h 00032 00033 # include components / ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Sample fits to the SB2 observations of HD 22128 (top two frames) and HD 56495 (bottom two frames). Fits (smooth lines) to the observations (points) show the combined synthetic spectra, as well as the two component synthetic spectra. ... HD 22128 and HD 56495 are both double-lined spectroscopic binary systems with short orbital periods, which have been proposed to host magnetic Ap stars. ...

Next: Combining Flat Fields Up: Preparing Your Calibration Previous: Combining Bias Frames . Similarly to the bias combination one can obtain an average dark current frame. However, one should consider whether the dark correction should really be applied: one needs a reasonable number of dark frames in order not to degrade the S/N, and obviously this takes telescope time. ... In that case, provided a good linearity of the CCD, one could do with the subtraction of an average dark frame. ...

. Comment on J1130-1449 . There are two dominant components in our image. Comparison with the 15 GHz image of Kellermann et al. (1998) reveals that the western component is brighter at the higher frequency, indicating that the brighter (eastern) component in our image may have a steep spectrum. VLBApls home page . Last modified: 16 Oct 2000