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36 Result(s)

within V. I. Shenavrin Remove this filter Astronomy, Observations and Techniques Remove this filter Astrophysics and Astroparticles Remove this filter

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  1. No Access

    Article

    Spectral and photometric observations of fast irregular variables III. VX Cas, UX Ori, BN Ori, and WW Vul-results of U, B, V, J, H, K, and L photometry

    E. A. Kolotilov, G. V. Zaitseva, V. I. Shenavrin in Astrophysics (1977)

  2. No Access

    Article

    Optical and infrared observations of SU Tau

    V. T. Doroshenko, Yu. S. Efimov, A. É. Rozenbush, V. Yu. Terebizh… in Astrophysics (1978)

  3. No Access

    Article

    Infrared photometry of Sakurai’s object (V4334 Sgr) in 1996–1999

    The infrared photometric observations of V4334 Sgr in 1996–1999 are presented. Together with optical data, they have allowed us to accurately estimate the bolometric flux from this star and to investigate the ...

    A. M. Tatarnikov, V. I. Shenavrin, B. F. Yudin, P. A. Whitelock… in Astronomy Letters (2000)

  4. No Access

    Article

    Infrared photometry of the symbiotic novae V1016 Cyg and HM Sge in 1978–1999

    The photometric JHKLM observations of the symbiotic novae V1016 Cyg and HM Sge in 1978–1999 are presented. Parameters of the cool stars themselves and the dust envelopes are estimated. The periods of 470±5 days (...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2000)

  5. No Access

    Article

    Infrared photometry of the X-ray binary XTE J1118+480 in April 2000

    We present the IR photometry of the X-ray binary XTE J1118+480 performed during seven nights in April and two nights in May–June 2000. A significant IR excess has been detected in the object, which may be due ...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2001)

  6. No Access

    Article

    Infrared observations of the star R Cas

    We present our JHKLM photometry for R Cas performed during 1988–2000. The pulsation period of R Cas is $$P \approx 429\mathop .\limit...

    A. É. Nadzhip, A. M. Tatarnikov, V. I. Shenavrin, G. Weigelt… in Astronomy Letters (2001)

  7. No Access

    Article

    Infrared photometry of five long-period binaries

    We present and discuss JHKLM photometry for five long-period binaries (VV Cep, ZZ CMi, WY Gem, ε Aur, and ζ Aur). The IR radiation from WY Gem may contain a component with a period of ∼430 days, attributable to t...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2001)

  8. No Access

    Article

    Infrared photometry of Sakurai’s object (V4334 Sgr) in 2000

    The infrared photometric observations of V4334 Sgr in 2000 are presented. They show that a gradual, but nonmonotonic increase in the optical depth of its dust envelope, which was formed early in 1997, had cont...

    A. M. Tatarnikov, V. I. Shenavrin, P. A. Whitelock, M. W. Feast… in Astronomy Letters (2001)

  9. No Access

    Article

    JHKLM photometry for carbon stars

    We discuss our JHKLM photometry for nine carbon Mira stars, eighteen carbon semiregular variables, and two oxygen Mira stars. For fourteen carbon stars, we present and analyze their infrared light and color curve...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2004)

  10. No Access

    Article

    Infrared photometry for five close binary systems

    We present the JHKLM photometry for five close (W Ser) binary systems obtained in the period 1996–2004. Positive phase shifts (with respect of the adopted ephemerides) have been found in the orbital infrared ligh...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2005)

  11. No Access

    Article

    Infrared variability of the nucleus of the Seyfert galaxy NGC 1068 in 1998–2004

    Our 8-year-long JHKLM photometry of the Seyfert galaxy NGC 1068 has confirmed its IR variability. The amplitudes of the brightness variations in the J (1.25 µm) and K (2.2 µm) bands are within 0 .

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2006)

  12. No Access

    Article

    JHKLM photometry for 22 hot stars

    We discuss our JHKLM photometry for 22 hot stars, 11 of which were identified in the General Catalogue of Variable Stars. For all of the observed objects, we have estimated the interstellar reddening, angular dia...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2006)

  13. No Access

    Article

    Unusual infrared fading of CH Cygni in 2006

    Infrared observations of the unique symbiotic system CH Cyg in 2003–2006 are presented. Analysis of the observations has shown that a fairly dense dust structure (a cloud or a shell) appeared on the line of si...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2007)

  14. No Access

    Article

    Infrared photometry of eight planetary nebulae

    We discuss the infrared (IR) (1.25–5 µm) photometry of eight planetary nebulae performed in 1999–2006. For all of the nebulae under study, we have firmly established IR brightness and color variations on time ...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2007)

  15. No Access

    Article

    Near-infrared observations of Comet C/2004 Q2 (Machholz)

    Our observations of Comet C/2004 Q2 (Machholz) in the range from 1.2 to 4.8 µm indicate that the material outflowed from the cometary surface in the form of fragments that separated into gas and dust under sub...

    I. A. Maslov, A. E. Nadzhip, V. I. Shenavrin in Astronomy Letters (2008)

  16. No Access

    Article

    Infrared photometry for two RV Tau stars and V1027 Cyg

    We present and discuss the results of our long-term JHKLM photometry for two RV Tau stars (R Sge and RV Tau) and the yellow supergiant V1027 Cyg, a candidate for protoplanetary nebulae. The amplitude of the infra...

    O. G. Taranova, V. I. Shenavrin, A. M. Tatarnikov in Astronomy Letters (2009)

  17. No Access

    Article

    Infrared photometry for three RV Tau variable stars

    We have analyzed our long-term (1995–2008) JHKLM photometry for three variable RV Tau supergiants. It follows from this analysis that: the amplitude of the JHK brightness variations is approximately the same, 0 ...

    O. G. Taranova, V. I. Shenavrin, A. M. Tatarnikov in Astronomy Letters (2010)

  18. No Access

    Article

    WR 140 (=V1687 Cyg): Infrared photometry, 2001–2010

    We present the results of our infrared observations of WR 140 (=V1687 Cyg) in 2001–2010. Analysis of the observations has shown that the J brightness at maximum increased near the periastron by about 0 ...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2011)

  19. No Access

    Article

    New activity cycle of the classical symbiotic star V1413 Aql

    We present the results of our photometric UBV JHKLM observations in 2008–2011 for the classical symbiotic star V1413 Aql. At the end of 2008, the hot component of V1413 Aql experienced the next strong outburst (Δ

    E. A. Kolotilov, G. V. Komissarova, A. A. Tatarnikova… in Astronomy Letters (2012)

  20. No Access

    Article

    FG SGE: Evolution of the circumstellar dust shell (JHKLM Photometry in 1985–2013)

    Long-term (1985–2013) JHKLM photometry for FG Sge is analyzed. Parameters of the supergiant and optical properties of the dust in the dust shell (DS) have been refined. Given the optical photometry, the spectral ...

    O. G. Taranova, V. I. Shenavrin in Astronomy Letters (2013)

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