منابع مشابه
VLBI Monitoring Observations of Water Masers Around the Semi-Regular Variable Star R Crateris
[email protected] 2Mizusawa Astrogeodynamics Observatory, National Astronomical Observatory, Mizusawa, Iwate 023-0861 3VERA Project Office, National Astronomical Observatory, Mitaka, Tokyo 181-8588 4Faculty of Science, Kagoshima University, Kagoshima, Kagoshima 890-0065 5Nishi-Harima Astronomical Observatory, Sayo, Hyogo 679-5313 6Nobeyama Radio Observatory, National Astronomical Obs...
متن کاملLuminous Red Variable Star
We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...
متن کاملEfficient use of simultaneous multi-band observations for variable star analysis
Abstract The luminosity changes of most types of variable stars are correlated in the different wavelengths, and these correlations may be exploited for several purposes: for variability detection, for distinction of microvariability from noise, for period search or for classification. Principal component analysis is a simple and well-developed statistical tool to analyze correlated data. We wi...
متن کاملObservations of multiple populations in star clusters
An increasing number of photometric observations of multiple stellar populations in Galactic globular clusters is seriously challenging the paradigm of GCs hosting single, simple stellar populations. These multiple populations manifest themselves in a split of different evolutionary sequences as observed in the cluster color-magnitude diagrams. Multiple stellar populations have been identified ...
متن کاملCluster and Double Star observations of dipolarization
We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC1) were located in the same local time sector: 7 August 2004, 18:00–24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00–24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1861
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/21.8.230