Skip to main content

10 Result(s)

within V. V. Hambaryan Remove this filter

and

  1. No Access

    Article

    Rosat source 1RXS J181333.7+453118, a Seyfert galaxy

    The ROSAT source 1RXS J181333.7+453118 is a Seyfert Sy1 galaxy with a red shift of z=0.093. A ROSAT spectrum and a spectrum over wavelengths of λ4500-7250Å taken with the 2.6-m telescope at the Byurakan Astrophys...

    K. S. Gigoyan, T. A. Movsessian, V. V. Hambaryan in Astrophysics (2010)

  2. No Access

    Article

    Late-type stars found in the FBS. New carbon stars

    We present new observations of seven late-type stars previously discovered in the First Byurakan Survey (FBS). These observations prove that they belong to the family of carbon (C) stars. Seventy-nine similar ...

    K. S. Gigoyan, D. Engels, N. Mauron, V. V. Hambaryan, C. Rossi, R. Gualandi in Astrophysics (2008)

  3. No Access

    Article

    X-ray emission of OH megamaser galaxies

    The properties of OH megamaser galaxies in the x-ray region are discussed. Observational data from the XMM-Newton x-ray satellite are presented for three megamasers, IRAS 01418+1651, IRAS 11010+4107, and IRAS ...

    R. A. Kandalyan, V. V. Hambaryan, H. A. Sabat in Astrophysics (2007)

  4. No Access

    Article

    Two-color parallel observations of flaring of the star HII 2411=FSP 377 in the Pleiades

    A 6 hour patrol search in the region of the Pleiades aggregate with the 40″ and 21″ Schmidt telescopes at the Byurakan Astrophysical Observatory provided simultaneous data in two colors (Pg and U) on a flare o...

    H. S. Chavushyan, V. V. Hambaryan in Astrophysics (2006)

  5. No Access

    Article

    On the expansion of stellar association Per OB2

    The analysis of the proper motions of bright members of the Per OB2 association on the basis of Hipparcos high-accuracy astromethc observations is presented. The existence of two different subgroups of OB-star...

    L. V. Mirzoyan, V. V. Hambaryan, A. A. Akopian, A. V. Poghosyan… in Astrophysics (1999)

  6. No Access

    Article

    First Byurakan Spectral Sky Survey. Stars of late spectral types. −11° ≤ δ ≤ −7° belt

    A 10th list of late-type M and C stars found on plates of the First Byurakan Spectral Sky Survey in the − 11° ≤ δ ≤ − 7° belt with an area of about 1070 deg2 is given. The list contains data on 169 red stars, 117...

    K. S. Gigoyan, V. V. Hambaryan, M. Azzopardi in Astrophysics (1998)

  7. No Access

    Article

    Trapezium type multiple stars — instable systems

    Trapezium type multiple stars are centers of star formation in stellar associations. Theoretical and observational studies show that they are dynamically instable. Due to the special space configurations of th...

    L. V. Mirzoyan, G. N. Salukvadze, V. V. Hambaryan, G. Sh Javakhishvily in Astrophysics (1998)

  8. No Access

    Article

    Rosat observations of pleiades flare stars

    The X-ray data of a sample of 104 flare stars (FSs) in the Pleiades cluster region obtained by Stauffer et al. [1] on the basis of deep ROSAT PSPC observations are analyzed. If we divide the X-ray emission det...

    V. V. Hambaryan, L. V. Mirzoyan, R. Wichmann, J. Krautter, R. Neuhäuser in Astrophysics (1997)

  9. No Access

    Article

    First Byurakan Spectral Sky Survey. Stars of late spectral types. ix. -15 ≤ δ ≤-11 ° belt

    A ninth list of late-type M and C stars found on plates of the First Byurakan Spectral Sky Survey in the -15 ≤ δ ≤-11° belt is given. Of the 123 selected objects, 83 were found for the first time (82 M stars a...

    H. V. Abrahamyan, K. S. Gigoyan, V. V. Hambaryan, M. Azzopardi in Astrophysics (1997)

  10. No Access

    Article

    First Byurakan Spectral Sky Survey. Late-type stars. VIII. Zone + 80 ≤ δ ≤ + 90°

    The eighth list of late-type stars of spectral classes M and C detected on the plates of the First Byurakan Spectral Sky Survey (FBS) in the zone +80 ≤ δ ≤ +90° is presented. Of the 79 objects detected, 67 are...

    K. S. Gigoyan, V. V. Hambaryan in Astrophysics (1996)