The Many Layers of NGC 1808

Noirlab_iotw2320a_1024

noirlab_iotw2320a May 17th, 2023

Credit: Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURAImage processing: R. Colombari and M. Zamani (NSF NOIRLab)  

NGC 1808 is a barred spiral galaxy located in the southern constellation Columba (the dove). This image was captured using the Dark Energy Camera (DECam), which is mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF NOIRLab, in Chile. The core of NGC 1808 is thought to house a supermassive black hole, characterized by its accretion of material and higher-than-normal brightness. The smoldering center is closely surrounded by a faint blue ring populated with star clusters and supernova remnants. This region is defined by its starburst activity, producing an exceptional number of hot, bright, young stars. The abundance of rapid star formation is thought to be the result of past tidal interactions with the nearby galaxy NGC 1792. Laced throughout this middle region of NGC 1808 are dark dust lanes resulting from large outflows of hydrogen gas from the galactic nucleus. The softly glowing outer arms surrounding the galaxy are slightly warped, again pointing to tidal interactions with NGC 1792. Such an interaction could have created the asymmetrical shape of NGC 1808 and hurled gas towards the nucleus, igniting the rapid star formation in its surrounding ring. You can find a square view of this Image of the Week here.  

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/iotw2320a/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details Image Details

Image Type
Observation
Object Name
NGC 1808
Noirlab_iotw2320a_128
 

Position Details Position Details

Position (ICRS)
RA = 5h 7m 43.0s
DEC = -37° 30’ 24.0”
Orientation
North is 0.9° CW
Field of View
19.4 x 10.9 arcminutes
Constellation
Columba

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Blue Blanco-4m (DECam) Optical (g) 473.0 nm
Green Blanco-4m (DECam) Optical (r) 642.0 nm
Red Blanco-4m (DECam) Optical (i) 784.0 nm
Spectrum_base
Blue
Green
Red
Noirlab_iotw2320a_1280
×
ID
iotw2320a
Subject Category
Subject Name
NGC 1808
Credits
Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURAImage processing: R. Colombari and M. Zamani (NSF NOIRLab)  
Release Date
2023-05-17T12:00:00
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/iotw2320a/
Type
Observation
Image Quality
Distance Notes
Facility
Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope
Instrument
DECam, DECam, DECam
Color Assignment
Blue, Green, Red
Band
Optical, Optical, Optical
Bandpass
g, r, i
Central Wavelength
473, 642, 784
Start Time
Integration Time
Dataset ID
None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
76.929078174, -37.5066796915
Reference Dimension
4427.0, 2490.0
Reference Pixel
2213.5, 1245.0
Scale
-7.29531306027e-05, 7.29531306027e-05
Rotation
-0.92000000000004545
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
iotw2320a
Metadata Date
2023-03-24T21:49:23+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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