PC Only With Location of Cepheids Marked

Hubble observed the spiral galaxy NGC 4603, located about 120 million light years away from Earth in the constellation Centaurus. The goal of this observation was to study Cepheid variable stars, of which about 40 were found in the galaxy. The positions of four Cepheid stars are marked on the picture.

Cepheids are 4-20 times more massive than the Sun and 100 000 times more luminous. As their luminosity and pulsation period are connected to each other they are used as to measure the distance of galaxies. Due to their immense luminosity this is possisble out to large distances.

Credit:

NASA & ESA

About the Image

NASA press release
NASA caption
Id:opo9919c
Type:Observation
Release date:25 May 1999, 17:00
Size:740 x 740 px

About the Object

Name:Cepheids, IRAS 12382-4042, NGC 4603
Type:• Local Universe : Star : Type : Variable
• Local Universe : Galaxy : Type : Spiral
• X - Galaxies Images/Videos
Distance:120 million light years

Colours & filters

BandWavelengthTelescope
Optical
V
555 nm Hubble Space Telescope
WFPC2
Infrared
I
814 nm Hubble Space Telescope
WFPC2

Image Formats

Large JPEG
300.1 KB
Screensize JPEG
476.1 KB

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