7,129 datasets found

Keywords: visible astronomy

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  • 3XMM-DR4 QSO candidates optical spectroscopy

    We present the results of optical spectroscopy for 58 quasar candidates at photometric redshifts z>~3, 57 of which enter into the Khorunzhev et al. (2016, Cat. J/PAZh/42/313)...
  • Byurakan-IRAS galaxies (BIG) with SDSS spectra

    The sample of Byurakan-IRAS galaxies (BIG) has been created based on optical identifications of IRAS Point Source Catalog (PSC) at high galactic latitudes. As a result, 1178...
  • AI CMi UBV light curves

    The U BV photometry and low-resolution spectroscopy for the semiregular variable AI CMi, a candidate for post-AGB objects, performed in 1996-2016 and 2000-2013, respectively,...
  • S5 0716+714 polarization & brightness 1991-2004

    We investigate the photometric and polarimetric behavior of the blazar S5 0716+714 based on the observations carried out in 1991-2004 at the 125-cm Crimean Astrophysical...
  • V1027 Cygni UBV and JHKLM photometry

    We present the results of our UBV and JHKLM photometry for the semiregular pulsating variable V1027 Cyg, a supergiant with an infrared excess, over the period from 1997 to 2015...
  • 3XMM-DR4 QSO candidates at 3<z<5.5

    A catalog of quasar candidates at redshifts 3<z<5.5 is presented. These candidates have been selected among X-ray sources in the XMM-Newton Serendipitous Source Catalog...
  • V1016 Cyg light curves and spectroscopy

    As a result of the next cycle of our long-term monitoring, we present our UBV JHKLM photometry for the symbiotic nova V1016 Cyg in 2008-2014. The star continued to...
  • Long-term monitoring of SZ Cam

    We present the results of the reduction of our photometric and spectroscopic observations for the eclipsing binary SZ Cam performed with the telescopes at the Astronomical...
  • V1329 Cyg UBV light curves and spectrum

    The photoelectric UBV observations of the peculiar symbiotic star V1329 Cyg performed at the Crimean Station of the SAI-MSU during 245 nights over the period 2003-2014 are...
  • U Sgr BV light curves

    For the classical Cepheid U Sgr, we have constructed an O-C diagram spanning a time interval of 144 years. The O-C diagram has the shape of a parabola, which has made it...
  • Proper motions and photometry in NGC 2323

    The results of a comprehensive study of the Galactic open cluster NGC 2323 are presented. The positions of stars to a limiting magnitude B<=16.7mag in a 42.5x42.5arcmin area...
  • IRAS 19336-0400 UBV light curves

    We present photoelectric and spectral observations of a hot candidate proto-planetary nebula early B-type supergiant with emission lines in spectrum-IRAS 19336-0400. The light...
  • SN 2009nr UBVRI light curves

    We present the results of our UBVRI CCD photometry for the second brightest supernova of 2009, SN 2009nr, discovered during a sky survey with the telescopes of the MASTER...
  • V340 Ser and V448 Lac light curves

    We analyze long-term UBV observations and ASAS-3 photometry for five candidates for protoplanetary nebulae - F and G supergiants with infrared excesses at high Galactic...
  • UBV light curves of LT Del

    Long-term photometric and spectroscopic observations of the yellow symbiotic star LT Del are analyzed. UBV light curves are presented. Based on the observations of 20 cycles, we...
  • ASAS 101538-5933.1 BV light curves

    In the plate collection of the Harvard College Observatory, we have obtained 528 photographic magnitude estimates for the recently discovered long-period classical Cepheid ASAS...
  • Variability of 3 protoplanetary nebulae

    We present new photometric data and analyze long-term UBV observations of three candidates for protoplanetary nebulae - F supergiants with infrared excesses at high Galactic...
  • Photometry in 6 galactic open star clusters

    We present the results of our BVRcIc CCD photometry for six Galactic open star clusters toward the Perseus spiral arm performed at the Special Astrophysical Observatory of the...
  • 2000-2008 UBV observations of HD 179821

    We present new results of our UBV photometry for HD 179821=V1427 Aql, an F supergiant with an infrared excess, from 2000 to 2008. The semiregular low-amplitude...
  • Photometry of FG Sge at the ejection state

    New photometric observations of the variable star FG Sge, a rapidly evolving planetary nebula nucleus, were performed in 2003-2008. On 230 nights, we obtained 86 UBV and 155...
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