NGC 6791 is an open star cluster in the Lyra constellation. [1] . It was discovered by Friedrich August Theodor Winnecke in 1853. At roughly 8 billion years old, and with an iron to hydrogen …

2024年10月25日 · An eight-billion-year-old cluster of stars 13,000 light-years from Earth, called NGC 6791, can be seen in the image. Clusters are families of stars that form together out of …

NGC 6791是我们所知最老和最大的 疏散星团 之一，但它为什么会含有如此大量的杂质，则仍然是个悬案。 典型的 疏散星团，通常是由数百颗恒星所组成，而且恒星的年龄少于十亿年。 NGC …

2018年10月29日 · NGC 6791 is a unique stellar cluster, key to our understanding of both the multiple stellar population phenomenon and the evolution and assembly of the Galaxy. …

2012年2月20日 · The evolutionary properties of the old metal-rich Galactic open cluster NGC6791 are assessed, based on deep UB photometry and 2Mass JK data. For 4739 stars in the …

2006年6月1日 · We report on high-resolution echelle spectroscopy of 20 giant stars in the Galactic old open cluster NGC 6791, obtained with Hydra at the WIYN telescope. High …

Open Cluster NGC 6791 in constellation Lyra. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 …

NGC 6791 (NGC6791) is a open star cluster that has a distance from Earth of 13,000.00 light years. It can be found in the constellation of Lyra. It was discovered in 1853 by Friedrich …

Explanation: NGC 6791 is one of the oldest and largest open clusters of stars known. But how did it get so dirty? Open star clusters usually contain a few hundred stars each less than a billion …

2012年9月17日 · We studied solar-like oscillations in 115 red giants in the three open clusters, NGC 6791, NGC 6811, and NGC 6819, based on photometric data covering more than 19 …