Close Encounters of the Galactic Kind

Chandra_493_1024

chandra_493 October 25th, 2011

Credit: X-ray: NASA/CXC/IPMU/J.Silverman et al; Optical: NASA/STScI/Caltech/N.Scoville et al.

Researchers have looked at thousands of galaxies in a large survey to test a prediction that close encounters between galaxies can trigger the rapid growth of supermassive black holes. They found that galaxies in early stages of an encounter were more likely to have actively growing black holes in their cores than isolated, or "lonelier" galaxies. The galaxies range in distances from about 3 billion to 8 billion light years from Earth, and two of the pairs are shown here in X-rays from Chandra (purple) and optical light from Hubble (gold). Chandra's unique ability to pinpoint actively growing black holes through the X-rays they generate was critical in determining this result.

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2011/cid/

Curator: Chandra X-ray Observatory, Cambridge, MA, USA

Image Use Policy: http://chandra.harvard.edu/photo/image_use.html

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Image Details

Image Type
Collage
Object Name
CID 1711
Subject - Distant Universe
Galaxy > Activity > AGN
Galaxy > Grouping > Pair

Distance

Universescale2
6,700,000 light years

Position Details

Position (ICRS)
RA = 9h 59m 34.7s
DEC = 1° 56’ 51.2”
Constellation
Sextans

Color Mapping

  Telescope Spectral Band Wavelength
Purple Chandra (ACIS) X-ray (X-ray) 826.7 pm
Yellow Hubble (ACS) Optical (I-band) 814.0 nm
Spectrum_xray1
Purple
Yellow
Chandra_493_1280
×
ID
493
Subject Category
D.5.3.2   D.5.5.1  
Subject Name
CID 1711
Credits
X-ray: NASA/CXC/IPMU/J.Silverman et al; Optical: NASA/STScI/Caltech/N.Scoville et al.
Release Date
2011-10-25
Lightyears
6,700,000
Redshift
6,700,000
Reference Url
http://chandra.harvard.edu/photo/2011/cid/
Type
Collage
Image Quality
Good
Distance Notes
distance given for CID 1711 only
Facility
Chandra, Hubble
Instrument
ACIS, ACS
Color Assignment
Purple, Yellow
Band
X-ray, Optical
Bandpass
X-ray, I-band
Central Wavelength
0.8267, 814
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
149.8944020, 1.9475439
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
Position
FITS Header
Notes
Creator (Curator)
Chandra X-ray Observatory
URL
http://chandra.harvard.edu
Name
Chandra X-ray Observatory Center
Email
cxcpub@cfa.harvard.edu
Telephone
617.496.7941
Address
60 Garden St.
City
Cambridge
State/Province
MA
Postal Code
02138
Country
USA
Rights
http://chandra.harvard.edu/photo/image_use.html
Publisher
Chandra X-ray Observatory Center
Publisher ID
chandra
Resource ID
cid.tif
Resource URL
http://chandra.harvard.edu/photo/2011/cid/cid.tif
Related Resources
Metadata Date
2024-02-02T16:16:10-05:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
6,700,000 light years

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