naa a22 4500 510790178 CHVBK 20180411083317.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1134/S1063773713030067 doi (NATIONALLICENCE)springer-10.1134/S1063773713030067 Corrections for the Lutz-Kelker bias for Galactic masers [Elektronische Daten] [A. Stepanishchev, V. Bobylev] Based on published data, we have collected information about Galactic maser sources with measured distances. In particular, 44 Galactic maser sources located in star-forming regions have trigonometric parallaxes, proper motions, and radial velocities. In addition, ten more radio sources with incomplete information are known, but their parallaxes have been measured with a high accuracy. For all 54 sources, we have calculated the corrections for the well-known Lutz-Kelker bias. Based on a sample of 44 sources, we have refined the parameters of the Galactic rotation curve. Thus, at R 0 = 8kpc, the peculiar velocity components for the Sun are (U ⊙, V ⊙, W ⊙) = (7.5, 17.6, 8.4) ± (1.2, 1.2, 1.2) km s−1 and the angular velocity components are ω 0 = −28.7 ± 0.5 km s−1 kpc−1, ω 0′ = +4.17 ± 0.10 km s−1 kpc−2, and ω0″ = −0.87 ± 0.06 km s−1 kpc−3. The corresponding Oort constants are A = 16.7 ± 0.6 km s−1 kpc−1 and B = −12.0 ± 1.0 km s−1 kpc−1; the circular rotation velocity of the solar neighborhood around the Galactic center is V 0 = 230 ± 16 km s−1. We have found that the corrections for the Lutz-Kelker bias affect the determination of the angular velocity ω 0 most strongly; their effect on the remaining parameters is statistically insignificant. Within themodel of a two-armed spiral pattern, we have determined the pattern pitch angle $$i = - 6_.^ \circ 5$$ and the phase of the Sun in the spiral wave χ 0 = 150°. Pleiades Publishing, Ltd., 2013 Galactic kinematics nationallicence maser sources nationallicence Lutz-Kelker bias nationallicence spiral structure nationallicence Stepanishchev A. Pulkovo Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, 196140, St. Petersburg, Russia aut Bobylev V. Pulkovo Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, 196140, St. Petersburg, Russia aut Astronomy Letters SP MAIK Nauka/Interperiodica 39/3(2013-03-01), 185-191 1063-7737 39:3<185 2013 39 11443 https://doi.org/10.1134/S1063773713030067 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063773713030067 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stepanishchev A. Pulkovo Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, 196140, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Bobylev V. Pulkovo Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, 196140, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Astronomy Letters SP MAIK Nauka/Interperiodica 39/3(2013-03-01), 185-191 1063-7737 39:3<185 2013 39 11443 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer