Zobrazeno 1 - 10
of 401
pro vyhledávání: '"Bartkevičius A."'
Publikováno v:
Open Astronomy, Vol 19, Iss 3-4, Pp 225-234 (2010)
The spectroscopic orbit of a high proper motion star, BD+20 5152, is calculated from 34 CORAVEL-type radial velocity measurements. The star has a slightly eccentric orbit with a period of 5.70613 d, half-amplitude of 47.7 km/s and eccentricity of 0.0
Externí odkaz:
https://doaj.org/article/d1fc39dd32dd48778fafb77f66519456
Publikováno v:
Open Astronomy, Vol 12, Iss 4, Pp 547-554 (2003)
Methods used for the quantitative classification of metal-deficient stars in the Vilnius photometric system are reviewed. We present a new calibration of absolute magnitudes for dwarfs and subdwarfs, based on Hipparcos parallaxes. The new classificat
Externí odkaz:
https://doaj.org/article/17aa2d3ef6434b9da5c771f09ca15217
Autor:
Bartkevičius A., Gudas A.
Publikováno v:
Open Astronomy, Vol 12, Iss 4, Pp 618-621 (2003)
A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Externí odkaz:
https://doaj.org/article/b5a7928ddf34418bad707e2c2d122bf9
Autor:
Bartkevičius A., Gudas A.
Publikováno v:
Open Astronomy, Vol 10, Iss 4, Pp 481-588 (2001)
Externí odkaz:
https://doaj.org/article/b5ff5512dd624cdb9216ba137d269a78
Autor:
Bartkevičius A., Sperauskas J.
Publikováno v:
Open Astronomy, Vol 8, Iss 3, Pp 325-354 (1999)
Externí odkaz:
https://doaj.org/article/4b5b3bffdd2b4e4596c50d5bb79dda57
Autor:
Bartkevičius A.
Publikováno v:
Open Astronomy, Vol 5, Iss 2, Pp 217-230 (1996)
Externí odkaz:
https://doaj.org/article/9f29b8700a82425694416cc82827e27a
Autor:
Bartkevičius A., Lazauskaitė R.
Publikováno v:
Open Astronomy, Vol 5, Iss 1, Pp 1-82 (1996)
Externí odkaz:
https://doaj.org/article/6e33cc88829b4fa8aee1e8d19d5d652f
Autor:
Bartkevičius A., Lazauskaitė R.
Publikováno v:
Open Astronomy, Vol 3, Iss 1-2, Pp 58-66 (1994)
Externí odkaz:
https://doaj.org/article/18600a7790154787a3a0f0596a9a3a73
Autor:
Bartkevičius A., Sperauskas J.
Publikováno v:
Open Astronomy, Vol 3, Iss 1-2, Pp 49-57 (1994)
Externí odkaz:
https://doaj.org/article/852a48244d42449192f5edb80b9c6b01
Autor:
Bartkevičius A.
Publikováno v:
Open Astronomy, Vol 3, Iss 1-2, Pp 30-33 (1994)
Externí odkaz:
https://doaj.org/article/d824bd7882c5400292dac0a692af3c3b