An analysis of four stellar rings
arXiv:2609.08942 · doi:10.1002/asna.201913547
Abstract
About 50 years ago, one thousand ring-like structures (called stellar-rings) were discovered by Isserstedt (1968). They were believed to be groups of young stars formed by shell-like triggered star formation, which would make them excellent tracers of spiral arms, for example. Neglected for 40 years, we used highly accurate kinematic, astrometric, and photometric data to investigate the four most prominent stellar rings. The aim is to investigate if those structures are indeed physically related groups of stars. We used proper motions and parallaxes from the Gaia DR2 to calculate distances and to search for common properties. Color-magnitude diagrams using BVJHKs measurements were investigated and isochrones fitted. None of the four stellar rings consists of a physically related group of young stars. The location of stars in the line-of-sight mimics a ring-like structure on the sky. The color-magnitude diagrams are typical for an integrated field population and not for a young star cluster, for example. The currently available data are sufficient to analyze ring-like structures with a high statistical significance. This allows a new search for such structures in the Milky Way.
arXiv comment9 pages, 6 figures, Astronomische Nachrichten, 2018, Volume 339, Issue 672, pp. 672-679
References in corpus (24)
- The Gaia mission
- PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
- Gaia Data Release 2: The astrometric solution
- New catalogue of optically visible open clusters and candidates
- A Gaia DR2 view of the Open Cluster population in the Milky Way
- Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
- VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
- Galactic Reddening in 3D from Stellar Photometry - An Improved Map
- Galactic Rotation and Solar Motion from Stellar Kinematics
- Comoving stars in Gaia DR1: An abundance of very wide separation co-moving pairs
- UCAC5: New Proper Motions using Gaia DR1
- Gaia Data Release 2: Processing the spectroscopic data
- Hot Stuff for One Year (HSOY) - A 583 million star proper motion catalogue derived from Gaia DR1 and PPMXL
- Stellar contents and star formation in the young open cluster Stock 8
- The Milky Way Project: Leveraging Citizen Science and Machine Learning to Detect Interstellar Bubbles
- WIYN Open Cluster Study. XXVI. Improved kinematic membership and spectroscopy of IC 2391
- New and Known Moving Groups And Clusters Identified in a Gaia Co-Moving Catalog
- Astrometric and photometric study of Dias 4, Dias 6 and other five open clusters using ground based and Gaia DR2 data
- The APOGEE-2 Survey of the Orion Star Forming Complex: I. Target Selection and Validation with early observations
- Far-infrared loops in the 2nd Galactic Quadrant
- A new compact young moving group around V1062 Sco
- Red Runaways: Hypervelocity Stars, Hills Ejecta and Other Outliers in the F-M Star Regime
- Testing stellar proper motions of the TGAS using data of the HSOY, UCAC5 and PMA catalogues
- Red Runaways II: Low mass Hills stars in SDSS Stripe 82