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White Dwarf Stars in M4

White Dwarf Stars in M4


Depicts: M4, NGC 6121
Copyright: Harvey Richer (University of British Columbia, Vancouver, Canada), M. Bolte (University of California, Santa Cruz) and NASA

Right Image

A view of globular cluster M4 (fourth object in the Messier catalog of star clusters and nebulae). The nearest globular cluster to Earth (7,000 light-years away), and containing more than 100,000 stars, M4 was the target of a Hubble Space Telescope search for white dwarf stars.

The box (right of center) shows the small area that Hubble telescope probed.

Credit: M. Bolte (University of California, Santa Cruz) and Kitt Peak National Observatory 0.9-meter telescope


Left Image

A Hubble Space Telescope color image of a small portion of the cluster only 0.63 light-years across reveals eight white dwarf stars (inside blue circles) among the cluster's much brighter population of yellow sun-like stars and cooler red dwarf stars.

Hubble reveals a total of 75 white dwarfs in one small area within M4, out of the total of about 40,000 white dwarfs that the cluster is predicted to contain.

Credit: Harvey Richer (University of British Columbia, Vancouver, Canada) and NASA

Last Update: 1 September 2019
28-Oct-2021 15:22 UT

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https://sci.esa.int/s/w0J6gl8

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