On the Component Masses of Visual Binaries
In the Sixth Catalog of Orbits of Visual Binary Stars we found those belonging to the Main Sequence to form a sample containing 432 visual binaries. Their total masses were obtained dynamically, i.e. they were calculated using the orbital elements and the new Hipparcos parallaxes. For the same pairs...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Astronomical Observatory, Department of Astronomy, Belgrade
2010-06-01
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| Series: | Serbian Astronomical Journal |
| Subjects: | |
| Online Access: | http://saj.matf.bg.ac.rs/180/pdf/071-080.pdf |
| _version_ | 1811250574318895104 |
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| author | Ninkovic, S. Cvetkovic, Z. |
| author_facet | Ninkovic, S. Cvetkovic, Z. |
| author_sort | Ninkovic, S. |
| collection | DOAJ |
| description | In the Sixth Catalog of Orbits of Visual Binary Stars we found those belonging to the Main Sequence to form a sample containing 432 visual binaries. Their total masses were obtained dynamically, i.e. they were calculated using the orbital elements and the new Hipparcos parallaxes. For the same pairs the total mass was also found astrophysically - by applying the mass-luminosity relation. The apparent magnitudes of the components were found in two different ways: by deriving them from total magnitudes and magnitude differences, and by taking their values directly from a catalogue. The results for these two approaches show no essential discrepancy. The values of total masses obtained dynamically have a large dispersion involving even completely unrealistic values. This is a clear indication that the input data are not sufficiently reliable. Nevertheless, in a large number of cases the agreement between total masses obtained by usin two different ways is quite satisfactory indicating that i) for many visual binaries, as a rule not too distant and with high-quality orbital elements, the dynamical total masses can be reliable; ii) the mass-luminosity relation yields quite satisfactory estimates for the component masses when they belong to the Main Sequence and iii) a correlation between the relative parallax error and orbit grade exists. |
| first_indexed | 2024-04-12T16:06:32Z |
| format | Article |
| id | doaj.art-c434c7cd47974484939f77045699ecc6 |
| institution | Directory Open Access Journal |
| issn | 1450-698X |
| language | English |
| last_indexed | 2024-04-12T16:06:32Z |
| publishDate | 2010-06-01 |
| publisher | Astronomical Observatory, Department of Astronomy, Belgrade |
| record_format | Article |
| series | Serbian Astronomical Journal |
| spelling | doaj.art-c434c7cd47974484939f77045699ecc62022-12-22T03:26:02ZengAstronomical Observatory, Department of Astronomy, BelgradeSerbian Astronomical Journal1450-698X2010-06-011807180On the Component Masses of Visual BinariesNinkovic, S.Cvetkovic, Z.In the Sixth Catalog of Orbits of Visual Binary Stars we found those belonging to the Main Sequence to form a sample containing 432 visual binaries. Their total masses were obtained dynamically, i.e. they were calculated using the orbital elements and the new Hipparcos parallaxes. For the same pairs the total mass was also found astrophysically - by applying the mass-luminosity relation. The apparent magnitudes of the components were found in two different ways: by deriving them from total magnitudes and magnitude differences, and by taking their values directly from a catalogue. The results for these two approaches show no essential discrepancy. The values of total masses obtained dynamically have a large dispersion involving even completely unrealistic values. This is a clear indication that the input data are not sufficiently reliable. Nevertheless, in a large number of cases the agreement between total masses obtained by usin two different ways is quite satisfactory indicating that i) for many visual binaries, as a rule not too distant and with high-quality orbital elements, the dynamical total masses can be reliable; ii) the mass-luminosity relation yields quite satisfactory estimates for the component masses when they belong to the Main Sequence and iii) a correlation between the relative parallax error and orbit grade exists.http://saj.matf.bg.ac.rs/180/pdf/071-080.pdfBinaries: visualStars: fundamental parameters |
| spellingShingle | Ninkovic, S. Cvetkovic, Z. On the Component Masses of Visual Binaries Serbian Astronomical Journal Binaries: visual Stars: fundamental parameters |
| title | On the Component Masses of Visual Binaries |
| title_full | On the Component Masses of Visual Binaries |
| title_fullStr | On the Component Masses of Visual Binaries |
| title_full_unstemmed | On the Component Masses of Visual Binaries |
| title_short | On the Component Masses of Visual Binaries |
| title_sort | on the component masses of visual binaries |
| topic | Binaries: visual Stars: fundamental parameters |
| url | http://saj.matf.bg.ac.rs/180/pdf/071-080.pdf |
| work_keys_str_mv | AT ninkovics onthecomponentmassesofvisualbinaries AT cvetkovicz onthecomponentmassesofvisualbinaries |