ISAAC spectrum of the central region of NGC 1808
eso_eso0128e August 14th, 2001
Credit: ESO
This image is a reproduction of a long-slit ISAAC spectrum of the central region of the active galaxy NGC 1808. It is in the 2.3 µm spectral region and the wavelength increases towards right. Several strong, vertical bands are seen; they are caused by CO-molecules in the atmospheres of the stars in this area. The bright band at the centre corresponds to the nucleus of the galaxy within which the central black hole is located. The characteristic S-shape is a result of the rotation of the stars around this centre, due to the Doppler effect. Technical information: this image shows a raw, long-slit IR-spectrum in the 2.3 µm wavelength region, obtained with ISAAC along the major axis of this galaxy.
Provider: European Southern Observatory
Image Source: https://www.eso.org/public/images/eso0128e/
Curator: European Southern Observatory, Garching bei München, Germany
Image Use Policy: Creative Commons Attribution 4.0 International License
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Source TIFF (293 KB)
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Image Details
Color Mapping
- ID
- eso0128e
- Subject Category
- C.5.1.1
- Subject Name
- NGC 1808, Spectrum
- Credits
- ESO
- Release Date
- 2001-08-14T00:00:00
- Lightyears
- Redshift
- Reference Url
- https://www.eso.org/public/images/eso0128e/
- Type
- Observation
- Image Quality
- Distance Notes
- Distance in light years from NED
- Facility
- Very Large Telescope
- Instrument
- ISAAC
- Color Assignment
- Grayscale
- Band
- Infrared
- Bandpass
- Near-IR
- Central Wavelength
- 2300
- Start Time
- Integration Time
- Dataset ID
- Notes
- Coordinate Frame
- Equinox
- Reference Value
- Reference Dimension
- 800.0, 627.0
- Reference Pixel
- Scale
- Rotation
- Coordinate System Projection:
- Quality
- FITS Header
- Notes
- Creator (Curator)
- European Southern Observatory
- URL
- http://www.eso.org/
- Name
- Telephone
- Address
- Karl-Schwarzschild-Strasse 2
- City
- Garching bei München
- State/Province
- Postal Code
- D-85748
- Country
- Germany
- Rights
- Creative Commons Attribution 4.0 International License
- Publisher
- European Southern Observatory
- Publisher ID
- eso
- Resource ID
- eso0128e
- Resource URL
- https://www.eso.org/public/archives/images/original/eso0128e.tif
- Related Resources
- Metadata Date
- 2010-02-26T12:04:28+01:00
- Metadata Version
- 1.1
Detailed color mapping information coming soon...
