NGC 6553 is a globular cluster in the constellation Sagittarius. NGC 6553 has an apparent magnitude of about 8th magnitude with an apparent diameter of 8.2 arcminutes. [2] Its Shapley–Sawyer Concentration Class is XI, [2] meaning the star concentration is very loose even at the center; it has stars of magnitude 20 and dimmer.

1999年12月8日 · As part of a large HST project to study the formation and evolution of rich star clusters in the Large Magellanic Cloud, we present results for the Galactic bulge metal-rich globular cluster NGC6553. HST observations using WFPC2, NICMOS and STIS were obtained for …

NGC 6553 is a Globular Cluster in the Sagittarius constellation. NGC 6553 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its B magnitude of 9.08, NGC 6553 is visible with the help of a binocular with a 60-70mm aperture or a small telescope.

2016年10月21日 · In this work, we use the high resolution near-infrared (NIR) spectroscopic data from APOGEE to study the chemical abundances of NGC 6553, which is one of the most metal-rich bulge GCs. We identify ten red giants as cluster members using their positions, radial velocities, iron abundances, and NIR photometry.

2019年12月8日 · In this article, we present a detailed chemical analysis of seven red giant members of NGC 6553 using high-resolution spectroscopy from VLT FLAMES. We obtained the stellar parameters (Teff, Log (g), vt, [Fe/H]) of these stars from the spectra, and we measured the chemical abundance for 20 elements, including light elements, iron-peak elements ...

2021年3月15日 · The aim of our research is to perform a detailed analysis of chemical abundances to a sample of stars of the bulge globular cluster NGC 6553, in order to determine chemical patterns that allow us to appreciate the phenomenon of Multiple Population in one of the most metal-rich Globular Clusters in the Galaxy.

We present a Hubble Space Telescope study of the metal-rich globular cluster NGC 6553 using WFPC2, NICMOS, and STIS. Our primary motivation is to calibrate the STIS broadband LP magnitude against V 555 and I 814 magnitudes for stars of known metallicity and absolute (visual) magnitude, for application to our study of LMC globular clusters.

1992年11月1日 · Stellar evolutionary tracks for metal-rich HB stars have been used to construct synthetic population models for the peculiar HB clump in NGC 6553. Although the uncertainties are large, it is possible to derive an age for NGC 6553 in the range 8-13 Gyr, which supports the idea that the disk globular cluster system is younger than the oldest ...

The globular clusters NGC 6544 and 6553 are located in the constellation Sagittarius, roughly one and two degrees southeast of the gorgeous Lagoon Nebula (Messier 8).

NGC 6553 was the first GC found by William Herschel. It is unusually metal-rich. I obtained the calibrated lights frames used to create the final image from Telescope Live. The frames were imaged by the CHI-1-CMOS Telescope at the El Sauce Observatory in Chile.