Towards a census of the Galactic anticentre star clusters - III: tracing the spiral structure in the Outer Disk

Abstract

In this paper we investigate the nature of 27 star cluster candidates, most of them projected towards the Galactic anticentre. We derive fundamental parameters for 20 confirmed clusters, among these 7 are new identifications. Four of the remaining are uncertain cases that require deeper photometry to establish their nature, and 4 are probably field fluctuations. In addition, we provide a partial census of the open clusters towards the Galactic anticentre. We also include in this study some interesting objects outside the anticentre region, in the second and third Galactic quadrants, mainly in the Perseus and Outer arms. These clusters confirm the extension of the Outer arm along the third quadrant. We also point out that the embedded cluster FSR 486, at a distance of 7.2 +/- 1.3 kpc from de Sun, is projected on the line of sight of the Local Group irregular dwarf galaxy IC 10. Thus, part of the unusual properties of IC 10 may be explained by a Galactic contamination. We point out the importance of embedded clusters in tracing the spiral structure.

References in corpus (14)

• Spitzer Observations of NGC 1333: A Study of Structure and Evolution in a Nearby Embedded Cluster
• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• A systematic survey for infrared star clusters with |b|<20deg using 2MASS
• Open clusters in dense fields: the importance of field-star decontamination for NGC5715, Lynga4, Lynga9, Trumpler23, Trumpler26 and Czernik37
• Spiral structure in the outer Galactic disk. I. The Third Galactic Quadrant
• Triggered massive-star formation on the borders of Galactic HII regions. IV- Star formation at the periphery of Sh2-212
• Spiral structure of the Third Galactic Quadrant and the solution to the Canis Major debate
• Automated search for galactic star clusters in large multiband surveys: I. Discovery of 15 new open clusters in the Galactic anticenter region
• Old open clusters in the inner Galaxy: FSR1744, FSR89 and FSR31
• On the distance and reddening of the starburst galaxy IC10
• On the infant weight loss of low- to intermediate-mass star clusters
• The population in the background of open clusters: Tracer of the Norma-Cygnus arm
• Galactic Rotation Parameters from Data on Open Star Clusters
• Towards a census of the Galactic anticentre star clusters II: exploring lower overdensities

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• Characterizing star cluster formation with WISE: 652 newly found star clusters and candidates
• Milky Way Tomography with K and M Dwarf Stars: the Vertical Structure of the Galactic Disk
• The spiral structure in the Solar neighborhood
• Into the Darkness: Classical and Type II Cepheids in the Zona Galactica Incognita
• Bridge over troubled gas: clusters and associations under the SMC and LMC tidal stresses
• New Galactic embedded clusters and candidates from a WISE Survey
• Discovery of two embedded clusters with WISE in the high Galactic latitude cloud HRK 81.4-77.8
• New detections of embedded clusters in the Galactic halo
• The star formation environment of the FU Ori type star V582 Aur
• Extracting parameters from Colour-Magnitude Diagrams
• The IC 5146 star forming complex and its surroundings with 2MASS, WISE and Spitzer