White Dwarf Stars in M4

Esahubble_opo9532c_1024

esahubble_opo9532c August 28th, 1995

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

A Hubble Space Telescope colour image of a small portion of the cluster only 0.63 light-years across reveals eight white dwarf stars 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.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/opo9532c/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
M 4 Messier 4 NGC 6121
Subject - Milky Way
Star > Grouping > Cluster > Globular
Esahubble_opo9532c_128
 

Position Details

Position (ICRS)
RA = 16h 23m 40.5s
DEC = -26° 30’ 43.8”
Orientation
North is 35.1° CCW
Field of View
0.3 x 0.3 arcminutes
Constellation
Scorpius

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFPC2) Infrared (I) 814.0 nm
Green Hubble (WFPC2) Optical (V) 555.0 nm
Blue Hubble (WFPC2) Ultraviolet (U) 336.0 nm
Spectrum_base
Red
Green
Blue
Esahubble_opo9532c_1280
×
ID
opo9532c
Subject Category
B.3.6.4.2  
Subject Name
M 4, Messier 4, NGC 6121
Credits
Harvey Richer (University of British Columbia, Vancouver, Canada) and NASA/ESA
Release Date
1995-08-28T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/opo9532c/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFPC2, WFPC2, WFPC2
Color Assignment
Red, Green, Blue
Band
Infrared, Optical, Ultraviolet
Bandpass
I, V, U
Central Wavelength
814, 555, 336
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
245.918657781, -26.5121590071
Reference Dimension
408.0, 457.0
Reference Pixel
204.0, 228.5
Scale
-1.26223617265e-05, 1.26223617265e-05
Rotation
35.139999999999482
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
opo9532c
Metadata Date
2003-12-09T17:44:24+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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