Searching for the Best Black Hole Recipe

Chandra_528_1024

chandra_528 December 6th, 2012

Credit: X-ray (NASA/CXC/SAO/A.Prestwich et al); Optical (NASA/STScI)

NGC 922 was formed by the collision between two galaxies one seen in this composite image (where X-rays from Chandra are red and optical data from Hubble appear as pink, blue, and yellow) and another located outside the field of view. This collision triggered the formation of new stars in the shape of a ring. Some of these were massive stars that evolved and collapsed to form black holes. Astronomers are studying NGC 922 and other galaxies to determine the galactic composition that produces the biggest stellar-mass black holes.

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2012/ngc922/

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

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

Image Details

Image Type
Observation
Object Name
NGC 922
Subject - Local Universe
Galaxy > Type > Ring
Galaxy > Activity > Starburst
Galaxy > Activity > Ultraluminous
Galaxy > Component > Ring

Distance

Universescale3
157,000,000 light years
Chandra_528_128
 

Position Details

Position (ICRS)
RA = 2h 25m 4.3s
DEC = -24° 47’ 24.5”
Orientation
North is 0.1° CW
Field of View
1.7 x 1.7 arcminutes
Constellation
Fornax

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFC3) Optical (I-band) 814.0 nm
Red Hubble (WFPC2) Optical (R-band) 665.0 nm
Green Hubble (WFC3) Optical (R-band) 621.0 nm
Green Hubble (WFC3) Optical (Y-band) 547.0 nm
Blue Hubble (WFPC2) Optical (B-band) 439.0 nm
Blue Hubble (WFPC2) Optical (U-band) 300.0 nm
Red Chandra (ACIS) X-ray (X-ray) 826.7 pm
Spectrum_xray1
Red
Red
Green
Green
Blue
Blue
Red
Chandra_528_1280
×
ID
528
Subject Category
C.5.1.5   C.5.3.3   C.5.3.4   C.5.4.5  
Subject Name
NGC 922
Credits
X-ray (NASA/CXC/SAO/A.Prestwich et al); Optical (NASA/STScI)
Release Date
2012-12-06
Lightyears
157,000,000
Redshift
157,000,000
Reference Url
http://chandra.harvard.edu/photo/2012/ngc922/
Type
Observation
Image Quality
Good
Distance Notes
Facility
Hubble, Hubble, Hubble, Hubble, Hubble, Hubble, Chandra
Instrument
WFC3, WFPC2, WFC3, WFC3, WFPC2, WFPC2, ACIS
Color Assignment
Red, Red, Green, Green, Blue, Blue, Red
Band
Optical, Optical, Optical, Optical, Optical, Optical, X-ray
Bandpass
I-band, R-band, R-band, Y-band, B-band, U-band, X-ray
Central Wavelength
814, 665, 621, 547, 439, 300, 0.8267
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
36.2677853, -24.7901362
Reference Dimension
3600.0, 3600.0
Reference Pixel
1801.0, 1801.0
Scale
7.6602e-06, 7.6601964e-06
Rotation
-0.06
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
WCS retrieved using CXCs PinpointWCS
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
ngc922.tif
Metadata Date
2012-12-06T10:41:40-05:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
157,000,000 light years

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