Molecular gas toward the Gemini OB1 Giant Molecular Cloud Complex I: Observation data
| Autor: | Fa-Cheng Li, Shaobo Zhang, Chen Wang, Yang Su, Ye Xu, Ji Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
010308 nuclear & particles physics Molecular cloud Perseus Arm Front (oceanography) FOS: Physical sciences Astronomy and Astrophysics Astrophysics Spatial distribution 01 natural sciences Astrophysics - Astrophysics of Galaxies Protein filament Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Perpendicular Angular resolution Observation data 010303 astronomy & astrophysics |
| Popis: | We present a large-scale mapping toward the GEM OB1 association in the galactic anti-center direction. The 9^deg * 6.5^deg area was mapped in 12CO, 13CO, and C18O with 50" angular resolution at 30" sampling. The region was divided into four main components based on spatial distribution and velocity: the Gemini OB1 Giant Molecular Cloud (GGMC) Complex, the Lynds Dark Clouds and the West Front Clouds, the Swallow and Horn, and the Remote Clouds. The GGMC Complex is located in the Perseus arm, while the Lynds Dark Clouds and the West Front Clouds are located in the Local arm. Swallow and Horn are revealed for the first time in this paper. The two clouds have a similar velocity interval ([11, 21] km s^-1) and have similar sizes (0.6 and 0.8 deg^2). We analyzed the structure of these clouds in detail and calculated their parameters (mass, temperature, etc.). Two elongated structures were discovered in a longitude-velocity map in the velocity interval [11, 30] km s^-1. We also found an interesting filament that shows a 0.8 km s^-1 pc^-1 gradient perpendicular to the direction of the long axis. 51 pages, 23 figures. Accepted by ApJS |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|