A study of the Galactic plane towards l = 305

Abstract

We present optical ($UBV{I}_C$) observations of a rich and complex field in the Galactic plane towards $l\sim 305^{\circ }$ and $b\sim 0^{\circ }$. Our analysis reveals a significantly high interstellar absorbtion ($A_V\sim 10$) and an abnormal extinction law in this line of sight. Availing a considerable number of color combinations, the photometric diagrams allow us to derive new estimates of the fundamental parameters of the two open clusters Danks~1 and Danks~2. Due to the derived abnormal reddening law in this line of sight, both clusters appear much closer (to the Sun) than previously thought. % Additionally, we present the optical colors and magnitudes of the WR~48a star and its main parameters were estimated. The properties of the two embedded clusters DBS2003~130 and 131, are also addressed. We identify a number of Young Stellar Objects which are probable members of these clusters. This new material is then used to revisit the spiral structure in this sector of the Galaxy showing evidence of populations associated with the inner Galaxy Scutum-Crux arm.

References in corpus (3)

• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• Searching for spiral features in the outer Galactic disk. The field towards WR38 and WR38a
• Embedded Stellar Populations towards Young Massive Star Formation Regions I. G305.2+0.2

Cited by in corpus (24)

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• Massive open star clusters using the VVV survey II. Discovery of six clusters with Wolf-Rayet stars
• The distance to the young open cluster Westerlund 2
• Recurrent dust formation by WR 48a on a 30-year timescale
• Constraints on the Magellanic Clouds' Interaction from the Distribution of OB Stars and the Kinematics of Giants
• The Massive Star-Forming Regions Omnibus X-Ray Catalog, Third Installment
• The G305 star-forming complex: radio continuum and molecular line observations
• XMM-Newton Observations Reveal Very High X-ray Luminosity from the Carbon-rich Wolf-Rayet Star WR 48a
• The Ara OB1a association: Stellar population and star formation history
• A Chandra Grating Observation of the Dusty Wolf-Rayet Star WR48a
• Young Stellar Clusters Containing Massive Young Stellar Objects in the VVV Survey
• Extinction in the Star Cluster SAI~113 and Galactic Structure in Carina
• A deep and wide-field view at the IC 2944 / 2948 complex in Centaurus
• UBVI CCD photometry and star counts in 9 inner disk Galactic star clusters
• Photometric distances to young stars in the inner Galactic disk. I. The L = 314${}^o$ direction
• The complex stellar populations in the lines of sight to open clusters in the third Galactic quadrant
• Stellar populations in the Carina region: The Galactic plane at l = 291
• Photometric distances to young stars in the inner galactic disk
• On the assessment of the nature of open star clusters and the determination of their basic parameters with limited data
• Accurate fundamental parameters and distance to a massive early-type eclipsing binary in the Danks 2 cluster
• Massive Stellar Content of the Galactic Supershell GSH 305+01-24
• The embedded clusters DBS 77, 78, 102, and 160-161 and their link with the interstellar medium