On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments

On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments

A new approach to determining the solar galactocentric distance, R0, from the geometry of spiral-arm segments is proposed. Geometric aspects of the problem are analyzed and a simplified three-point method for estimating R0 from objects in a spiral segment is developed in order to test the proposed a...

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Main Authors: Nikiforov I. I., Veselova A. V.
Format: Article
Language:English
Published: De Gruyter 2015-12-01
Series:Open Astronomy
Subjects:
galaxy: structure
galaxy: fundamental parameters
masers
Online Access:https://doi.org/10.1515/astro-2017-0240
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spelling doaj-c953fbd208e74cbeab6fa38c0164b90e2021-09-06T19:40:12ZengDe GruyterOpen Astronomy2543-63762015-12-0124438739410.1515/astro-2017-0240astro-2017-0240On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm SegmentsNikiforov I. I.0Veselova A. V.1Department of Celestial Mechanics, Saint Petersburg State University, Universitetskij Prospekt 28, Staryj Peterhof, Saint Petersburg 198504, Russian FederationDepartment of Celestial Mechanics, Saint Petersburg State University, Universitetskij Prospekt 28, Staryj Peterhof, Saint Petersburg 198504, Russian FederationA new approach to determining the solar galactocentric distance, R0, from the geometry of spiral-arm segments is proposed. Geometric aspects of the problem are analyzed and a simplified three-point method for estimating R0 from objects in a spiral segment is developed in order to test the proposed approach. An estimate of R0 = 8.44 ± 0.45 kpc is obtained by applying the method to masers with measured trigonometric parallaxes, and statistical properties of the R0 estimation from spiral segments are analyzed.https://doi.org/10.1515/astro-2017-0240galaxy: structuregalaxy: fundamental parametersmasers
collection DOAJ
language English
format Article
sources DOAJ
author Nikiforov I. I.
Veselova A. V.
spellingShingle Nikiforov I. I.
Veselova A. V.
On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
Open Astronomy
galaxy: structure
galaxy: fundamental parameters
masers
author_facet Nikiforov I. I.
Veselova A. V.
author_sort Nikiforov I. I.
title On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
title_short On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
title_full On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
title_fullStr On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
title_full_unstemmed On the Possibility of Determining the Distance to the Galactic Center from the Geometry of Spiral Arm Segments
title_sort on the possibility of determining the distance to the galactic center from the geometry of spiral arm segments
publisher De Gruyter
series Open Astronomy
issn 2543-6376
publishDate 2015-12-01
description A new approach to determining the solar galactocentric distance, R0, from the geometry of spiral-arm segments is proposed. Geometric aspects of the problem are analyzed and a simplified three-point method for estimating R0 from objects in a spiral segment is developed in order to test the proposed approach. An estimate of R0 = 8.44 ± 0.45 kpc is obtained by applying the method to masers with measured trigonometric parallaxes, and statistical properties of the R0 estimation from spiral segments are analyzed.
topic galaxy: structure
galaxy: fundamental parameters
masers
url https://doi.org/10.1515/astro-2017-0240
work_keys_str_mv AT nikiforovii onthepossibilityofdeterminingthedistancetothegalacticcenterfromthegeometryofspiralarmsegments
AT veselovaav onthepossibilityofdeterminingthedistancetothegalacticcenterfromthegeometryofspiralarmsegments
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