Stromgren photometric survey in the Galactic anticenter direction

Abstract

Aims. The main purpose is to map the radial variation of the stellar space density for the young stellar population in the Galactic anticenter direction in order to understand the structure and location of the Perseus spiral arm. Methods. A uvbyHbeta Stromgren photometric survey covering 16sqrdeg in the anticenter direction was carried out using the Wide Field Camera at the Isaac Newton Telescope. This is the natural photometric system for identifying young stars and obtaining accurate estimates of individual distances and ages. The calibration to the standard system was undertaken using open clusters. Results. We present a main catalog of 35974 stars with all Stromgren indexes and a more extended one with 96980 stars with partial data. The central 8sqrdeg have a limiting magnitude of V<17m, while the outer region reaches V<15.5m. These large samples will permit us to analyze the stellar surface density variation associated to the Perseus arm also to study the properties of the stellar component and the interstellar extinction in the anticenter direction.

13 pages, 8 figures, 12 tables

References in corpus (8)

• Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions
• The Second-Generation Guide Star Catalog: Description and Properties
• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• The Bar and Spiral Structure Legacy (BeSSeL) Survey: Mapping the Milky Way with VLBI Astrometry
• Overlapping abundance gradients and azimuthal gradients related to the spiral structure of the Galaxy
• Spiral structure in the outer Galactic disk. I. The Third Galactic Quadrant
• Initial Data Release from the INT Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS)
• A large scale extinction map of the Galactic Anticenter from 2MASS

Cited by in corpus (8)

• Gaia Data Release 3: The Galaxy in your preferred colours. Synthetic photometry from Gaia low-resolution spectra
• IGAPS: the merged IPHAS and UVEX optical surveys of theNorthern Galactic Plane
• NGC 6067: a young and massive open cluster with high metallicity
• First detection of the field star overdensity in the Perseus arm
• Physical parameters of IPHAS-selected classical Be stars. (I. Determination procedure and evaluation of the results.)
• Constraining the Thin Disc Initial Mass Function using Galactic Classical Cepheids
• NGC 3105: a young open cluster with low metallicity
• Stellar physical parameters from Str ömgren photometry. Application to the young stars in the Galactic anticenter survey