File:Search for Red Dwarfs in NGC 6397 (opo9441b).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Search_for_Red_Dwarfs_in_NGC_6397_(opo9441b).jpg ‎(800 × 600 pixels, file size: 236 KB, MIME type: image/jpeg)

Captions

Captions

Left ImageA Hubble Space Telescope image of a small region (1.4 light-years across) in the globular star cluster NGC 6397.

Summary

[edit]
Description
English: Left ImageA Hubble Space Telescope image of a small region (1.4 light-years across) in the globular star cluster NGC 6397. Simulated stars (diamonds) have been added to this view of the same region of the cluster to illustrate what astronomers would have expected to see if faint red dwarf stars were abundant in the Milky Way Galaxy. The field would then contain 500 stars, according to theoretical calculations.Right ImageThe unmodified HST image shows far fewer stars than would be expected, according to popular theories of star formation. 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. From this observation, scientists have identified the surprising cutoff point below which nature apparently doesn't make many stars smaller that 1/5 the mass of our Sun. These HST findings provide new insights into star formation in our Galaxy.
Date 17 October 1994 (upload date)
Source Search for Red Dwarfs in NGC 6397
Author F. Paresce, ST ScI & ESA and NASA
Other versions
  • JPG version
    JPG version

Licensing

[edit]
Public domain 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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:40, 19 June 2024Thumbnail for version as of 21:40, 19 June 2024800 × 600 (236 KB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://cdn.esahubble.org/archives/images/large/opo9441b.jpg via Commons:Spacemedia

You cannot overwrite this file.

The following page uses this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Search_for_Red_Dwarfs_in_NGC_6397_(opo9441b).jpg&oldid=909520333"