Faint White Dwarf Star in Globular Cluster NGC 6397

Esahubble_heic0608c_1024

esahubble_heic0608c August 17th, 2006

Credit: NASA, ESA and H. Richer (University of British Columbia)

The image pinpoints one of the dim white dwarfs seen by Hubble (in the centre of the image, between the two brighter stars). The white dwarf has been cooling for billions of years. It is so cool that instead of looking red, it has undergone a chemical change in its atmosphere that makes it appear blue.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/heic0608c/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
NGC 6397
Subject - Milky Way
Star > Grouping > Cluster > Globular
Esahubble_heic0608c_128
 

Position Details

Position (ICRS)
RA = 17h 41m 1.5s
DEC = -53° 43’ 28.5”
Orientation
North is 0.3° CW
Field of View
0.1 x 0.1 arcminutes
Constellation
Ara

Color Mapping

  Telescope Spectral Band Wavelength
Orange Hubble (ACS) Optical (I) 814.0 nm
Cyan Hubble (ACS) Optical (V) 606.0 nm
Spectrum_base
Orange
Cyan
Esahubble_heic0608c_1280
×
ID
heic0608c
Subject Category
B.3.6.4.2  
Subject Name
NGC 6397
Credits
NASA, ESA and H. Richer (University of British Columbia)
Release Date
2006-08-17T20:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/heic0608c/
Type
Observation
Image Quality
Distance Notes
Distance in light years from: http://onlinelibrary.wiley.com/doi/10.1111/j.1745-3933.2006.00153.x/pdf
Facility
Hubble Space Telescope, Hubble Space Telescope
Instrument
ACS, ACS
Color Assignment
Orange, Cyan
Band
Optical, Optical
Bandpass
I, V
Central Wavelength
814, 606
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
265.256097355, -53.7245939874
Reference Dimension
404.0, 404.0
Reference Pixel
640.0, 640.0
Scale
-2.19039295647e-06, 2.19039295647e-06
Rotation
-0.28
Coordinate System Projection:
TAN
Quality
Position
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
heic0608c
Metadata Date
2006-08-10T10:37:10-04:00
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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