The Gould Belt, the de Vaucouleurs-Dolidze Belt, and the Orion Arm
arXiv:1411.2915 · doi:10.1134/S1063773714120020
Abstract
Based on masers with measured trigonometric parallaxes, we have redetermined the spatial orientation parameters of the Local (Orion) arm. Using 23 sources (the Gould Belt objects were excluded), we have found that their spatial distribution can be approximated by a very narrow ellipsoid elongated in the direction L_1=77.1+/-2.9^o whose symmetry plane is inclined to the Galactic plane at an angle of 5.6+/-0.2^o. The longitude of the ascending node of the symmetry plane is l_Ω=70+/-3^o. A new estimate for the pitch angle of the Local spiral arm has been obtained by an independent method: i=12.9+/-2.9^o. Previously, a belt of young B stars, the de Vaucouleurs.Dolidze belt, was pointed out on the celestial sphere with parameters close to such an orientation. We have refined the spatial orientation parameters of this belt based on a homogeneous sample of protostars. The de Vaucouleurs.Dolidze belt can be identified with the Local arm, with the belt proper as a continuous band on the celestial sphere like the Gould Belt being absent due to the peculiarities of the spatial orientation of the Local arm. Using the entire sample of 119 Galactic masers, we have shown that the third axis of their position ellipsoid has no deviation from the direction to the Galactic pole: B_3=89.7+/-0.1^o.
arXiv comment14 pages, 5 figures
References in corpus (24)
- Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
- A Hipparcos census of the nearby OB associations
- Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
- The observed spiral structure of the Milky Way
- Revisiting the population of Galactic open clusters
- The Trigonometric Parallax of Cygnus X-1
- ON the Nature of the Local Spiral Arm of the Milky Way
- VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy
- Distance to Orion KL Measured with VERA
- The Bar and Spiral Structure Legacy (BeSSeL) Survey: Mapping the Milky Way with VLBI Astrometry
- VLBA determination of the distance to nearby star-forming regions II. Hubble 4 and HDE 283572 in Taurus
- Trigonometric Parallaxes of 6.7 GHz Methanol Masers
- VLBA determination of the distance to nearby star-forming regions III. HP Tau/G2 and the three-dimensional structure of Taurus
- Kinematics of OB-associations and the new reduction of the Hipparcos data
- VLBA determination of the distance to nearby star-forming regions V. Dynamical mass, distance and radio structure of V773 Tau A
- The Milky Way Spiral Structure Parameters from Data on Masers and Selected Open Clusters
- On the Spiral Structure of the Milky Way Galaxy
- VLBA determination of the distance to nearby star-forming regions VI. The distance to the young stellar object HW 9 in Cepheus A
- Distance and Proper Motion Measurement of the Red Supergiant, PZ Cas, in Very Long Baseline Interferometry H2O Maser Astrometry
- Annual Parallax Distance to the K-type star system IRAS 22480+6002 measured with VERA
- Galactic Kinematics from a Sample of Young Massive Stars
- Kinematics of the Gould Belt Based on Open Clusters
- VLBI Observations of H2O Maser Annual Parallax and Proper Motion in IRAS 20143+3634: Reflection on the Galactic Constants
- Orientation Parameters of the Cepheid System in the Galaxy
Cited by in corpus (14)
- Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: III. The Total Neutral Gas Disk
- Distances and Kinematics of Gould Belt Star-Forming Regions with Gaia DR2 results
- A guided map to the Spiral arms in the galactic disk of the Milky Way
- Different studies of the global pitch angle of the Milky Way's spiral arms
- The z Distribution of Hydrogen Clouds and Masers with Kinematic Distances
- Determination of the Galactic Rotation Curve from OB Stars
- Meta-analysis from different tracers of the small Local Arm around the Sun - extent, shape, pitch, origin
- Galactic Kinematics from Data on Open Star Clusters from the MWSC Catalogue
- Study of the Galactic Rotation Based on Masers and Radio Stars with VLBI Measurements of Their Parallaxes
- The System of Molecular Clouds in the Gould Belt
- Estimation of the Parameters of the Spiral Pattern in the Galaxy Based on a Sample of Classical Cepheids
- Kinematics of T Tauri Stars Close to the Sun from the Gaia DR2 Catalogue
- Estimation of the Vertical Disk Scale Height Using Young Galactic Objects
- Determination of the Solar Galactocentric distance from masers kinemics