Zobrazeno 1 - 10
of 250
pro vyhledávání: '"BERDNIKOV, L. N."'
Publikováno v:
MNRAS, 2021, v. 507, p. 4409
A model of the Galaxy with the outer ring R1R2 can explain the observed distribution of the radial, VR, and azimuthal, VT, velocity components along the Galactocentric distance, R, derived from the Gaia EDR3 data. We selected stars from the Gaia EDR3
Externí odkaz:
http://arxiv.org/abs/2106.09531
This paper presents results from photometric and statistical-parallax analysis of a sample of 850 field RR Lyrae (RRL) variables. The photometric and spectroscopic data for sample RRLs are obtained from (1) our new spectroscopic observations (for 448
Externí odkaz:
http://arxiv.org/abs/2101.03899
We present the results of study of the Galactic candidate luminous blue variable Wray 15-906, revealed via detection of its infrared circumstellar shell (of \approx2 pc in diameter) with the Wide-field Infrared Survey Explorer and the Herschel Space
Externí odkaz:
http://arxiv.org/abs/2008.12797
We report the results of optical spectroscopy of the blue supergiant Sk-69 279 and its circular shell in the Large Magellanic Cloud (LMC) with the Southern African Large Telescope (SALT). We classify Sk-69 279 as an O9.2 Iaf star and analyse its spec
Externí odkaz:
http://arxiv.org/abs/1711.00874
Autor:
Berdnikov, L. N., Burlak, M. A., Vozyakova, O. V., Dodin, A. V., Lamzin, S. A., Tatarnikov, A. M.
Comparing the images of the jet of the young star RW Aur A, separated by a period of 21.3 years, we found that the outermost jet's knots have emerged $\approx 350$ yr ago. We argue that at that moment the jet itself has appeared and intensive accreti
Externí odkaz:
http://arxiv.org/abs/1708.08488
Long-slit spectroscopy with the Southern African Large Telescope (SALT) of central stars of mid-infrared nebulae detected with the Spitzer Space Telescope and Wide-field Infrared Survey Explorer (WISE) led to the discovery of numerous candidate lumin
Externí odkaz:
http://arxiv.org/abs/1612.00292
In this paper, we report the results of spectroscopic and photometric observations of the candidate evolved massive star MN48 disclosed via detection of a mid-infrared circular shell around it with the Spitzer Space Telescope. Follow-up optical spect
Externí odkaz:
http://arxiv.org/abs/1604.03942
We report the results of optical spectroscopy of the candidate evolved massive star MN44 revealed via detection of a circular shell with the Spitzer Space Telescope. First spectra taken in 2009 May--June showed the Balmer lines in emission as well as
Externí odkaz:
http://arxiv.org/abs/1509.08931
Autor:
Gvaramadze, V. V., Kniazev, A. Y., Bestenlehner, J. M., Bodensteiner, J., Langer, N., Greiner, J., Grebel, E. K., Berdnikov, L. N., Beletsky, Y.
We report the results of spectrophotometric observations of the massive star MN18 revealed via discovery of a bipolar nebula around it with the Spitzer Space Telescope. Using the optical spectrum obtained with the Southern African Large Telescope, we
Externí odkaz:
http://arxiv.org/abs/1508.06288
Autor:
Dambis, A. K., Berdnikov, L. N., Efremov, Yu. N., Kniazev, A. Yu., Rastorguev, A. S., Glushkova, E. V., Kravtsov, V. V., Turner, D. G., Majaess, D. J., Sefako, R.
We use the currently most complete collection of reliable Cepheid positions (565 stars) out to ~5 kpc based mostly on our photometric data to outline the spiral pattern of our Galaxy. We find the pitch-angle to be equal to 9--10 degrees with the most
Externí odkaz:
http://arxiv.org/abs/1505.01782