Cepheid Variable Star in Galaxy M100

Esahubble_opo9449d_1024

esahubble_opo9449d October 26th, 1994

Credit: Dr. Wendy L. Freedman, Observatories of the Carnegie Institution of Washington, and NASA/ESA

This NASA/ESA Hubble Space Telescope image of a region of the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies. Based on the Hubble observation, the distance to M100 has been measured accurately as 56 million light-years (+/- 6 million light-years), making it the farthest object where intergalactic distances have been determined precisely.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/opo9449d/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Messier 100
Subject - Local Universe
Star > Type > Variable
Galaxy > Type > Spiral
Esahubble_opo9449d_128
 

Position Details

Position (ICRS)
RA = 12h 23m 0.5s
DEC = 15° 49’ 22.2”
Orientation
North is 164.7° CW
Field of View
2.5 x 1.8 arcminutes
Constellation
Coma Berenices

Color Mapping

  Telescope Spectral Band Wavelength
Grayscale Hubble (WFPC2) Optical -
Esahubble_opo9449d_1280
×
ID
opo9449d
Subject Category
C.3.2.1   C.5.1.1  
Subject Name
Messier 100
Credits
Dr. Wendy L. Freedman, Observatories of the Carnegie Institution of Washington, and NASA/ESA
Release Date
1994-10-26T19:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/opo9449d/
Type
Observation
Image Quality
Distance Notes
Distance in light years from NED
Facility
Hubble Space Telescope
Instrument
WFPC2
Color Assignment
Grayscale
Band
Optical
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
185.752272926, 15.822822487
Reference Dimension
1524.0, 1087.0
Reference Pixel
762.0, 543.5
Scale
-2.75561363123e-05, 2.75561363123e-05
Rotation
-164.6599999999998
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
opo9449d
Metadata Date
2003-12-09T17:43:04+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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