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Collection:
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NASA Hubble Space Telescope Collection
Collection
NASA Hubble Space Telescope Collection
Collection
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Title:
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Hubble Space Telescope Finds Stellar Graveyard
Title
Hubble Space Telescope Finds Stellar Graveyard
Title
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Object Name:
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M4
Object_Name
M4
Object Name
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Object Name:
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NGC 6121
Object_Name
NGC 6121
Object Name
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Acknowledgement:
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*Left Credit:* Kitt Peak National Observatory 0.9-meter telescope, National Optical Astronomy Observatories; courtesy M. Bolte (University of California, Santa Cruz)
Acknowledgement
*Left Credit:* Kitt Peak National Observatory 0.9-meter telescope, National Optical Astronomy Observatories; courtesy M. Bolte (University of California, Santa Cruz)
Acknowledgement
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Acknowledgement:
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*Right Credit:* Harvey Richer (University of British Columbia, Vancouver, Canada) and NASA [ http://www.nasa.gov/]
Acknowledgement
*Right Credit:* Harvey Richer (University of British Columbia, Vancouver, Canada) and NASA [ http://www.nasa.gov/] Acknowledgement
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Fast Facts:
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note:
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*Image Type:*: Astronomical/Illustr ation
note
*Image Type:*: Astronomical/Illustr ation
note
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note:
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*Release Date*:August 28, 1995 12:00 AM (EDT)
note
*Release Date*:August 28, 1995 12:00 AM (EDT)
note
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note:
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*News Release Number:*: STScI-1995-32a
note
*News Release Number:*: STScI-1995-32a
note
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note:
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*Title*:Hubble Space Telescope Finds Stellar Graveyard
note
*Title*:Hubble Space Telescope Finds Stellar Graveyard
note
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note:
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*Description*:
[Left] - 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. Ancient red giant stars are predominant in this view from a ground-based telescope. The field is 47 light-years across. The box (right of center) shows the small area that Hubble telescope probed.
[Right] - 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. The Hubble results will allow astronomers to refine theoretical predictions of the rate at which white dwarfs cool ? an important prerequisite for making reliable estimates for the age of the universe and of our Milky Way galaxy, based on white dwarf temperatures. The image was taken with the Wide Field and Planetary Camera 2.
note
*Description*:
[Left] - 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. Ancient red giant stars are predominant in this view from a ground-based telescope. The field is 47 light-years across. The box (right of center) shows the small area that Hubble telescope probed.
[Right] - 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. The Hubble results will allow astronomers to refine theoretical predictions of the rate at which white dwarfs cool ? an important prerequisite for making reliable estimates for the age of the universe and of our Milky Way galaxy, based on white dwarf temperatures. The image was taken with the Wide Field and Planetary Camera 2.
note
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facet_what:
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Sun
facet_what
Sun
facet_what
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Camera 2
facet_what
Camera 2
facet_what
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Hubble Space Telescope (HST)
facet_what
Hubble Space Telescope (HST)
facet_what
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facet_what:
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Columbia
facet_what
Columbia
facet_what
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facet_where:
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Milky Way Galaxy
facet_where
Milky Way Galaxy
facet_where
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facet_where:
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California
facet_where
California
facet_where
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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Canada
facet_where
Canada
facet_where
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facet_where:
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Santa Cruz
facet_where
Santa Cruz
facet_where
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facet_where:
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Vancouver
facet_where
Vancouver
facet_where
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facet_when:
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August 28, 1995
facet_when
August 28, 1995
facet_when
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facet_when_year:
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1995
facet_when_year
1995
facet_when_year
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UID:
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SPD-HUBBLE-STScI-199 5-32a
UID
SPD-HUBBLE-STScI-199 5-32a
UID
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original url:
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original_url
original url
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Release Date:
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August 28, 1995 12:00 AM (EDT)
Release_Date
August 28, 1995 12:00 AM (EDT)
Release Date
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