Ribbons and pearls

Eso_potw1801a_1024

eso_potw1801a January 1st, 2018

Credit: ESO

This week’s picture shows spectacular ribbons of gas and dust wrapping around the pearly centre of the barred spiral galaxy NGC 1398. This galaxy is located in the constellation of Fornax (The Furnace), approximately 65 million light-years away. Rather than beginning at the very middle of the galaxy and swirling outwards, NGC 1398’s graceful spiral arms stem from a straight bar, formed of stars, that cuts through the galaxy’s central region. Most spiral galaxies — around two thirds — are observed to have this feature, but it’s not yet clear whether or how these bars affect a galaxy’s behaviour and development. This image comprises data gathered by the FOcal Reducer/low dispersion Spectrograph 2 (FORS2) instrument, mounted on ESO’s Very Large Telescope (VLT) at Paranal Observatory, Chile. It shows NGC 1398 in striking detail, from the dark lanes of dust mottling its spiral arms, through to the pink-hued star-forming regions sprinkled throughout its outer regions. This image was created as part of the ESO Cosmic Gems programme, an outreach initiative to produce images of interesting, intriguing or visually attractive objects using ESO telescopes, for the purposes of education and public outreach. The programme makes use of telescope time that cannot be used for science observations. All data collected may also be suitable for scientific purposes, and are made available to astronomers through ESO’s science archive.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/potw1801a/

Curator: European Southern Observatory, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 1398
Subject - Local Universe
Galaxy > Type > Spiral
Eso_potw1801a_128
 

Position Details

Position (ICRS)
RA = 3h 38m 51.9s
DEC = -26° 20’ 13.3”
Orientation
North is up
Field of View
7.2 x 7.3 arcminutes
Constellation
Fornax

Color Mapping

  Telescope Spectral Band Wavelength
Blue VLT (FORS2) Optical (B) 440.0 nm
Green VLT (FORS2) Optical (V) 557.0 nm
Red VLT (FORS2) Optical (R) 655.0 nm
Magenta VLT (FORS2) Optical (H-alpha) 660.0 nm
Spectrum_base
Blue
Green
Red
Magenta
Eso_potw1801a_1280
×
ID
potw1801a
Subject Category
C.5.1.1  
Subject Name
NGC 1398
Credits
ESO
Release Date
2018-01-01T06:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/potw1801a/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
FORS2, FORS2, FORS2, FORS2
Color Assignment
Blue, Green, Red, Magenta
Band
Optical, Optical, Optical, Optical
Bandpass
B, V, R, H-alpha
Central Wavelength
440, 557, 655, 660
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
54.7163794414, -26.3370257903
Reference Dimension
3416.0, 3463.0
Reference Pixel
1708.0, 1731.5
Scale
-3.49717890587e-05, 3.49717890587e-05
Rotation
-0
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
potw1801a
Metadata Date
2016-07-08T19:27:15+02:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.

 

Providers | Sign In