Zobrazeno 1 - 10
of 67
pro vyhledávání: '"A. K. Dambis"'
Publikováno v:
Odessa Astronomical Publications, Vol 20, Iss 1, Pp 197-202 (2007)
We present the review of the main results of more than two decades of the Moscow program of Cepheid studies, carried out at the Institute of Astronomy (INASAN) and Sternberg Astronomical Institute (SAI). This program consists of extensive photometry
Externí odkaz:
https://doaj.org/article/d9d24adb1612448184bf3dbf0b339bb9
Publikováno v:
Astronomy Letters. 46:691-701
In 2012–2014 we obtained 3296 CCD frames in the $$BVI_{c}$$ photometric system for the RR Lyrae star T Men with the 76-cm telescope of the South African Astronomical Observatory (SAAO, SAR) and the 1-m telescopes of the Las Cumbres Observatory Glob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::599f3f2bcc0d724017ce57f982c19d25
https://doi.org/10.1134/s1063773720100035
https://doi.org/10.1134/s1063773720100035
Autor:
A. Yu. Kniazev, L. N. Berdnikov, E. N. Pastukhova, A. K. Dambis, Ivan Yu. Katkov, Valery V. Kravtsov
Publikováno v:
Astrophysical Bulletin. 74:183-195
We took a total of 635 B-, V-, and Ic-band CCD frames for the RRab Lyr type variable DVMon, which has a close bright visual companion with a separation of about 1.9′. Observations were made with the 76-cm telescope of the South African Astronomical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85da4a0ed392a70d00e9bef597afcaab
https://doi.org/10.1134/s199034131902007x
https://doi.org/10.1134/s199034131902007x
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96e409592d62225d52e9fc398ca39341
http://arxiv.org/abs/2106.09531
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58376584ebb908c3e155c71d5271e2c6
http://arxiv.org/abs/2101.03899
http://arxiv.org/abs/2101.03899
Autor:
A. K. Dambis, A. M. Mel'nik
We estimated the contribution of binary systems to the velocity dispersion inside OB-associations derived from Gaia DR2 proper motions. The maximum contribution to the velocity dispersion is given by the systems with the period of revolution of P=5.9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8a7182178133a4af33a6dfdf83aaa46
http://arxiv.org/abs/2009.04577
http://arxiv.org/abs/2009.04577
Autor:
A. K. Dambis, A. M. Mel'nik
We calculated the median parallaxes for 47 OB associations including at least 10 stars with known Gaia DR2 parallaxes. A comparison between trigonometric and photometric parallaxes of OB associations reveals a zero-point offset of delta_pi=-0.11 +\-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f19477310165f306e78d8579460ff733
http://arxiv.org/abs/2006.14649
http://arxiv.org/abs/2006.14649
Autor:
A. K. Dambis, A. M. Mel'nik
We study the motions inside 28 OB-associations with the use of Gaia DR2 proper motions. The average velocity dispersion calculated for 28 OB-associations including more than 20 stars with Gaia DR2 proper motion is sigma_v =4.5 km s-1. The median viri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00dc9de0db2003d04aeb3ef275442f00
Autor:
Nikita D Utkin, A. K. Dambis
We report the first determination of the distance to the Galactic centre based on the kinematics of halo objects. We apply the statistical-parallax technique to the sample of ~2500 Blue Horizontal Branch (BHB) stars compiled by Xue et al. (2011) to s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55f1cda5a3fde251af3dd2d55fd30a9b
Publikováno v:
Astronomy Reports. 62:986-992
Position data for stars in the vicinities of 119 Galactic globular clusters from the USNOB1, 2MASS, URAT1, and ALLWISE catalogs have been reduced in the system of the UCAC5 reference catalog. The published positions are used together with positions f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7112a1dbd53fd97c2465dd6e1e96b3a
https://doi.org/10.1134/s1063772918120065
https://doi.org/10.1134/s1063772918120065