Hubble image archive
Region of Globular Star Cluster NGC 6397
Right A NASA Hubble Space Telescope image of a small region (1.4 light-years across) in the globular star cluster NGC 6397 shows far fewer stars than would be expected in faint red dwarf stars were abundant. HST resolves about 200 stars. The stellar density is so low that HST can...
- Date
- Jan 1, 1994
- Mission
- Hubble Space Telescope
- Archive ID
- hubblesite-images-1994-41-197-image
Right A NASA Hubble Space Telescope image of a small region (1.4 light-years across) in the globular star cluster NGC 6397 shows far fewer stars than would be expected in faint red dwarf stars were abundant. HST resolves about 200 stars. The stellar density is so low that HST can literally see right through the cluster and resolve far more distant background galaxies. This observation shows the surprising cutoff point below which nature apparently doesn't make many stars smaller that 1/5 the mass of our Sun. If there were lower mass stars in the cluster, then the image would contain an estimated 500 stars. This observation provides new insights into star formation in our Galaxy. Left A ground-based sky survey photograph of the globular cluster NGC 6397, one of the nearest and densest agglomerations of stars to Earth. The cluster is located 7,200 light-years away in the southern constellation Ara, and is one of 150 such objects which orbit our Milky Way Galaxy. Globular clusters are ideal laboratories for studying the formation and evolution of stars. This visible-light picture was taken on March 3, 1994 with the Wide Field Planetary Camera 2, as part of the HST parallel observing program.
Credits
Credit: F. Paresce, ST ScI & ESA and NASAImage Details
| About The Object | |
|---|---|
| Object Name | NGC 6397 |
| R.A. Position | 17h 40m 41.35s |
| Dec. Position | -53° 40' 25.29" |
Downloads
Source
Image and source material are credited to the official mission archive linked below.
View on NASA.gov