On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
| Autor: | A. V. Veselova, I. I. Nikiforov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
galaxy: fundamental parameters Spiral galaxy High Energy Physics::Lattice Astronomy Galactic Center FOS: Physical sciences Order (ring theory) Astronomy and Astrophysics Geometry QB1-991 Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics - Astrophysics of Galaxies law.invention galaxy: structure Space and Planetary Science law masers Astrophysics of Galaxies (astro-ph.GA) Maser Trigonometry Spiral Astrophysics::Galaxy Astrophysics |
| Zdroj: | Open Astronomy, Vol 24, Iss 4, Pp 387-394 (2015) |
| ISSN: | 2543-6376 |
| Popis: | A new approach to determining the solar galactocentric distance, $R_0$, from the geometry of spiral-arm segments is proposed. Geometric aspects of the problem are analyzed and a simplified three-point method for estimating $R_0$ from objects in a spiral segment is developed in order to test the proposed approach. An estimate of $R_0 = 8.44 \pm 0.45$ kpc is obtained by applying the method to masers with measured trigonometric parallaxes, and statistical properties of the $R_0$ estimation from spiral segments are analyzed. 8 pages, 7 figures. Published in Baltic Astronomy (BA) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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