O. V. Vozyakova

Lomonosov Moscow State University

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ЛН

Л. Н. Бердников

Lomonosov Moscow State University

A. K. Dambis

Lomonosov Moscow State University

АМ

А. М. Татарников

Lomonosov Moscow State University

B. S. Safonov

Lomonosov Moscow State University

V. V. Ignatova

University of Pennsylvania

АВ

А. В. Додин

Lomonosov Moscow State University

N. I. Shatsky

Lomonosov Moscow State University

V. P. Goranskij

Special Astrophysical Observatory

E. A. Barsukova

Special Astrophysical Observatory

D. Cheryasov

Lomonosov Moscow State University

Cooperative Institutions

Lomonosov Moscow State University

Astronomical Institute of the Slovak Academy of Sciences

Russian Academy of Sciences

Institute of Applied Astronomy

Moscow State University

Special Astrophysical Observatory

Institute of Astronomy

South African Radio Astronomy Observatory

Astronomical Observatory

Space Research Institute

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Search for Tidal Disruption Events Based on the SRG/eROSITA Survey with Subsequent Optical Spectroscopy

Astronomy Letters (2022)

Г. А. Хорунжев S. Sazonov П. С. Медведев M. Gilfanov К. Атапин

10.1134/s1063773723010036

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Citations (2)

RR Lyrae variables: visual and infrared luminosities, intrinsic colours and kinematics

Monthly Notices of the Royal Astronomical Society (2013)

A. K. Dambis Л. Н. Бердников A. Y. Kniazev В. В. Кравцов А. С. Расторгуев

We use UCAC4 proper motions and WISE W1-band apparent magnitudes intensity-mean for almost 400 field RR Lyrae variables to determine the parameters of the velocity distribution of Galactic RR Lyrae population and constrain the zero points of the metallicity- relation and those of the period-metallicity--band and period-metallicity--band luminosity relations via statistical parallax. We find the mean velocities of the halo- and thick-disc RR Lyrae populations in the solar neighbourhood to be (U0(Halo), V0(Halo), W0(Halo)) = (-7 +/- 9, -214 +/- 10, -10 +/- 6) km/s and (U0(Disc), V0(Disc), W0(Disc)) =(-13 +/- 7, -37 +/- 6, -17 +/- 4) km/s, respectively, and the corresponding components of the velocity-dispersion ellipsoids, (sigma VR(Halo), sigma Vphi(Halo), sigma Vtheta(Halo)) = (153 +/- 9, 101 +/- 6, 96 +/- 5) km/s and (sigma VR(Disc), sigma Vphi(Disc), sigma Vtheta(Disc)) = (46 +/- 7, 37 +/- 5, 27 +/- 4) km/s, respectively. The fraction of thick-disc stars is estimated at 0.22 +/- 0.03. The corrected IR period-metallicity-luminosity relations are = -0.769 +0.088 [Fe/H]- 2.33 mathoprm log PF and = -0.825 + 0.088 [Fe/H] -2.33 mathoprm log PF, and the optical metallicity-luminosity relation, [Fe/H]-, is = +1.094 + 0.232 [Fe/H], with a standard error of +/- 0.089, implying an LMC distance modulus of 18.32 +/- 0.09, a solar Galactocentric distance of 7.73 +/- 0.36 kpc, and the M31 and M33 distance moduli of DM(M31) = 24.24 +/- 0.09 (D = 705 +/- 30 kpc) and DM(M33) = 24.36 +/- 0.09 (D = 745 +/- 31 kpc), respectively. Extragalactic distances calibrated with our RR Lyrae star luminosity scale imply a Hubble constant of ~80 km/s/Mpc. Our results suggest marginal prograde rotation for the population of halo RR Lyraes in the Milky Way.

RR Lyrae variable

Distance modulus

Velocity dispersion

10.1093/mnras/stt1514

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Citations (82)

The Distribution and Kinematics of Classical Cepheids in the Galaxy

ASPC (1998)

Л. Н. Бердников A. K. Dambis Yu. N. Efremov A. M. Mel'Nik A. S. Rastorgouev

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VizieR Online Data Catalog: Properties of field RR Lyrae variables (Dambis+, 2013)

VizieR Online Data Catalog (2014)

A. K. Dambis Л. Н. Бердников A. Y. Kniazev В. В. Кравцов А. С. Расторгуев

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X-ray and optical transient SRGe J195057.5+672122: a possible nearby GRB afterglow/hypernova

The astronomer's telegram (2020)

S. Sazonov R. Burenin Г. А. Хорунжев A. R. Lyapin П. С. Медведев

Hypernova

Transient (computer programming)

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Photoelectric observations of Cepheids in 1995

Astronomical and Astrophysical Transactions (1997)

Л. Н. Бердников V. V. Ignatova O. V. Vozyakova

Abstract In August—October 1995, 2905 photoelectric BV(RI)c brigtness measurements were made for 156 Cepheids using the 60-cm reflector at Mt. Maidanak observatory. Tables of observations, V-light curves, and B — V, (V — R)c , and (V — I)c colour curves are presented.

Photoelectric effect

Reflector (photography)

10.1080/10556799708202995

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Citations (26)

Astrophysics and Space Science (1997)

Л. Н. Бердников A. K. Dambis O. V. Vozyakova

Photoelectric effect

Large Magellanic Cloud

10.1023/a:1000850314001

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Citations (0)