Volume 374, Number 1, July IV 2001
|Page(s)||227 - 234|
|Section||Interstellar and circumstellar matter|
|Published online||15 July 2001|
New spectroscopic components in multiple systems. IV. *
Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile
2 Sternberg Astronomical Institute, 13 Universitetsky prosp., 119899 Moscow, Russia
3 Institute of Astronomy of Russian Acad. Sci., 48 Pyatnitskaya Str, 109017 Moscow, Russia e-mail: email@example.com
Corresponding author: A. A. Tokovinin, firstname.lastname@example.org
Accepted: 15 May 2001
New close sub-systems are reported and studied in eight visual multiple systems. Elements of one double-lined and eight single-lined spectroscopic orbits are given. Magnitudes, colors, spectral types and masses of individual components are estimated by combining all available data. The visual secondary component of the young binary HD 27638 is a double-lined pair of G-type dwarfs on a 17-day orbit with an unseen but massive (>1.2 ) spectroscopic tertiary on an 8-year orbit. The invisible secondary of HD 28271A is also massive, but it is not seen, probably because of a high luminosity of the primary -an F7 star with fast axial rotation and an active chromosphere which evolves off the Main Sequence. Two additional companions are found in the visual triple system HD 179484.
Key words: binaries: spectroscopic / binaries: visual
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.