منابع مشابه
Bvi Photometric Variability Survey of M3
We have conducted a three band (BV I) variability survey of the globular cluster M3. This is the first three band survey of the cluster using modern image subtraction techniques. Observations were made over 9 nights in 1998 on the 1.2 m. telescope at the F. L. Whipple Observatory in Arizona. We present photometry for 180 variable stars in the M3 field, of which 12 are newly discovered. New disc...
متن کاملQSOs from the variability and proper motion survey in the M3 field
We present results of the spectroscopical follow-up observations of QSO candidates from a combined variability and proper motion (VPM) survey in a ∼ 10 square degrees region centered on the globular cluster M3. The search is based on a large number of digitised Schmidt plates with a time-baseline of three decades. This paper reviews the candidate selection, the follow-up spectroscopy, and gener...
متن کاملSurvey of Variability
Centimeter-band total ux density and linear polarization variability is a common property of extragalactic objects, including many with a steep spectrum: these variations occur on a variety of timescales and, in several cases, are clearly associated with the development of VLBI-scale hot spots. Within the framework of a hydrodynamical relativistic ow model we attribute these variations to the d...
متن کاملThe Princeton Variability Survey
The Princeton Variability Survey (PVS) is a robotic survey which makes use of readily available, “off-the-shelf” type hardware products, in conjunction with a powerful set of commercial software products, in order to monitor and discover variable objects in the night sky. The main goal of the PVS has been to devise an automated telescope and data reduction system, requiring only moderate techni...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2005
ISSN: 0004-6256,1538-3881
DOI: 10.1086/427252