Utilizing ESA’s Gaia satellite, Turkish astronomers from the Istanbul College have explored a Galactic open cluster often known as Berkeley 6. Outcomes of the research, revealed June 27 within the Bitlis Eren College Journal of Science, shed extra gentle on the properties and nature of this cluster.
Open clusters (OCs), shaped from the identical big molecular cloud, are teams of stars loosely gravitationally sure to one another. Thus far, greater than 1,000 of them have been found within the Milky Way, and scientists are nonetheless on the lookout for extra, hoping to search out a wide range of these stellar groupings. Increasing the listing of identified galactic open clusters and learning them intimately might be essential for bettering our understanding of the formation and evolution of our galaxy.
Situated between 7,900 and 10,000 gentle years away from the Earth, Berkeley 6 (or Be 6 for brief) is a Galactic open cluster with a core radius of 0.54 arcminutes and reddening at a stage of 0.9 magazine. The cluster is estimated to be between 32 and 400 million years outdated.
On condition that many parameters of Berkeley 6 stay unknown or unsure, astronomers Seliz Koc and Talar Yontan determined to research this poorly-studied cluster with Gaia. By analyzing the third photometric, spectroscopic, and astrometric knowledge launch (DR3) from Gaia, they managed to get extra insights into the properties of this OC.
“On this research, we offered structural and astrophysical parameters of the Be 6 open cluster through the use of Gaia DR3 photometric and astrometric knowledge,” the researchers wrote within the paper.
Gaia DR3 supplies prime quality astrometric and photometric knowledge on greater than 1.5 billion celestial objects. Primarily based on this catalog, Koc and Yontan obtained 23,139 stars with magnitudes starting from 7 to 22 magazine after which calculated the membership chances of stars positioned within the area of Berkeley 6.
In outcome, the authors of the paper recognized 119 bodily member stars for this cluster and located a central stellar density for this OC of roughly 38.84 stars per sq. arcminute. The imply correct movement Berkeley 6 was measured to be -0.894 and -0.533, in right ascension and declination, respectively.
Moreover, the research discovered that Berkeley 6 is about 350 million years outdated, has a limiting radius of some 12.45 gentle years, and colour extra of 0.918 magazine. The outcomes point out that the cluster has a solar metallicity.
On the subject of the gap estimates, the astronomers obtained parallax and isochrone distances for Berkeley 6, they have been measured to be 10,000 and eight,560 gentle years. Though there’s a vital distinction of about between these two outcomes, the researchers famous that the 2 distance values are suitable inside the errors. The galactocentric distance for the cluster was measured to be 32,300 light years.
Extra info:
Seliz KOÇ et al, Astrophysical Parameters of the Open Cluster Berkeley 6, Bitlis Eren Üniversitesi Fen Bilimleri Dergisi (2023). DOI: 10.17798/bitlisfen.1213059. On arXiv: arxiv.org/abs/2306.15367
Journal info:
arXiv
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