The population in the background of open clusters: tracer of the Norma-Cygnus arm

2006/08/31 by A. K. Pandey, S. Sharma, Saurabh Sharma +2 · 33 citations
Medicine · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Galactic plane #Gamma-ray bursts and supernovae #Magnitude (astronomy) #Medicine #Open cluster #Physics #Population #Range (aeronautics) #Stars #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1111/j.1365-2966.2006.11015.x

published in Monthly Notices of the Royal Astronomical Society 373(1), 255-262 (Oxford University Press) · Accepted for the publication in MNRAS, 9 pages, 9 figures, 2 tables

arxiv created 2006/08/31 · openalex publication_date 2006/10/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present colour–magnitude diagrams of open clusters, located in the range 112° < l < 252°, manifesting stellar populations in the background of clusters. Some of the populations are found to be located beyond the Perseus arm and may be the part of the Norma-Cygnus (outer) arm. The outer arm seems to be continued from l∼ 120° to ∼235°. The background populations follow the downward warp of the Galactic plane around l∼ 240°.

Citations

• One ring to encompass them all: a giant stellar structure that surrounds the Galaxy
• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• Detection of the Canis Major galaxy at (l;b) = (244°; −8°) and in the background of Galactic open clusters
• New catalogue of optically visible open clusters and candidates

Cited by

• Blue straggler stars in Galactic open clusters and the effect of field star contamination
• Star formation in young star cluster NGC 1893
• MASS FUNCTIONS AND PHOTOMETRIC BINARIES IN NINE OPEN CLUSTERS
• Photometry of a Galactic Field atl = 232°,b = -6°: The Old Open Cluster Auner 1, the Norma-Cygnus Spiral Arm, and the Signature of the Warped Galactic Thick Disk