Research & Science Home ESA Public Web Site Sci-Tech Portal      XMM-Newton Public Web Site XMM-Newton Sci-Tech Portal
Astrophysics Missions Planetary Exploration Missions Solar Terrestrial Science Missions Fundamental Physics Missions Science Faculty

XMM-Newton SOC
Home Page
Conferences & Meetings
Latest News
News Archive
Quarterly Status Report
General User Support
XMM-Newton Helpdesk
Users Group
Proposers Info
Documents & Manuals
AO-15 Information
AO-16 Timeline
OTAC Results
Target Visibility Tool
Target Search Tool
Observers Info
ToO Alert
ToO Details
Proposal Enhancement
Long Term Plan
Short Term Schedule
Scheduled Observations Search
Scheduling Guided Tour
Observation Log Browser
Data Analysis
SAS News
What is SAS?
How to use SAS
SAS Workshops
SAS Version Changes
Download and Install SAS
Science Simulator (SciSim)
Archive, Pipeline & Catalogues
XMM-Newton Science Archive
Pipeline Processing System
Observation & Data Status
Time Correlation Fix
Serendipitous Source Catalogue
OM Serendipitous Source Catalogue
Slew Survey Catalogue
Latest Slew Results
Browsing Interface for RGS Data
Live Radiation Monitor Plots
Radiation Monitor Files
Calibration & Background
Background Analysis
SOC Info
XMM-Newton Contact Details
How to get to ESAC
ESA Research Fellowships
ESAC Trainee Projects
ESA Young Graduate Trainees
About XMM-Newton
Image Gallery
XMM-Newton Technical Details
XMM-Newton SOC Overview
XMM-Newton 10th Anniversary
Large Programmes
Publication Guidelines
Source Naming Convention
Communicating your Results
Other Links
Project Related Links
Space Weather Links
Research Projects
Other X-ray Missions
Where is XMM-Newton Now?
Search the XMM-Newton website
XMM-Newton Image Gallery

Due to a planned migration of the XMM-Newton SOC web portal, all SOC internet services (including ToO Alerts) will be unavailable Wednesday, 10 February from 10:00 to 13:00 (GMT).

 Go to the Gallery Home Page

 XMM-Newton Home > Gallery Home > Stars > Stellar Clusters > M 55, omega cen, M 22, NGC 3201, ...

XMM-Newton false colour images of six Galactic globular clusters

Minimum credit line: Image courtesy of ESA. (for details, see Conditions of Use).

The image above can be displayed at full size and may be downloaded by clicking the image above.

About this Image

False colour observations of six Galactic globular clusters. Globular clusters are very dense groups of very old stars. The clusters appear less dense in the X-ray image as only a few of the objects that they contain emit at such high energies. However, it is thanks this that we can find the more exotic objects contained in globular clusters, such as neutron star X-ray binaries, cataclysmic variables, millisecond pulsars etc. The globular clusters in the image are M 55 (NGC 6805), Omega Centauri (NGC 5139), M 22 (NGC 6656), NGC 3201, NGC 2808 and M 13 (NGC 6205). Each image is composed of an image in the 0.5-1.0 keV band (red), one in the 1.0-2.0 keV band (green) and one in the 2.0-4.5 keV band. A number of exotic sources can then be fairly easily picked out by eye. The brighter red objects towards the centre of each image are neutron star X-ray binaries, a number of blue/white objects towards the centre are cataclysmic variables, and some of the fainter red objects towards the centre are millisecond pulsars.

Investigator(s):  N.A. Webb, D. Barret, M. Servillat, B. Gendre

For More Information

Alternate Resolutions (Help)

This image is available in the following downloadable versions: Higher resolution versions of this image may be available, please contact the XMM-Newton HelpDesk.

Search the Image Gallery

To search the Image Gallery for a particular object, fill in the object name in the box below and click the Submit button.
Object Name Show Results As:  
To search the Image Gallery for other images, fill in any of the fields below and click the Submit button.
Category Sub-Category Instrument Show Results As:
For more search options, please use our Advanced Search form.

XMM-Newton; Europe's X-Ray Observatory
Last update: 02-Jun-2015 by