File:Region of Globular Star Cluster NGC 6397 (1994-41-197).tiff
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Region_of_Globular_Star_Cluster_NGC_6397_(1994-41-197).tiff (600 × 600 pixels, file size: 355 KB, MIME type: image/tiff)
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[edit]DescriptionRegion of Globular Star Cluster NGC 6397 (1994-41-197).tiff |
English: 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. |
Date |
17 October 1994 (upload date) Taken on 3 March 1994 |
Source | Region of Globular Star Cluster NGC 6397 |
Author | Credit: F. Paresce, ST ScI & ESA and NASA |
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Keywords InfoField | Star Clusters; Globular Clusters |
Licensing
[edit]Public domainPublic domainfalsefalse |
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:15, 5 March 2024 | 600 × 600 (355 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://stsci-opo.org/STScI-01EVTB2F60PGP16TQ160AM5DVY.tif via Commons:Spacemedia |
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Width | 600 px |
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Height | 600 px |
Bits per component | 8 |
Compression scheme | Uncompressed |
Pixel composition | Black and white (Black is 0) |
Image data location | 3,348 |
Number of components | 1 |
Number of rows per strip | 600 |
Bytes per compressed strip | 360,000 |
Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |