ALMA and SPHERE view of GW Orionis (superimposed)

Eso_eso2014c_1024

eso_eso2014c September 3rd, 2020

Credit: ESO/Exeter/Kraus et al., ALMA (ESO/NAOJ/NRAO)

ALMA, in which ESO is a partner, and the SPHERE instrument on ESO’s Very Large Telescope have imaged GW Orionis, a triple star system with a peculiar inner region. Unlike the flat planet-forming discs we see around many stars, GW Orionis features a warped disc, deformed by the movements of the three stars at its centre. This composite image shows both the ALMA and SPHERE observations of the disc.  The ALMA image shows the disc’s ringed structure, with the innermost ring (part of which is visible as an oblong dot at the very centre of the image) separated from the rest of the disc. The SPHERE observations allowed astronomers to see for the first time the shadow of this innermost ring on the rest of the disc, which made it possible for them to reconstruct its warped shape.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso2014c/

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
GW Orionis
Subject - Milky Way
Star > Grouping > Triple
Star > Circumstellar Material > Disk > Protoplanetary
Eso_eso2014c_128
 

Position Details

Position (ICRS)
RA = 5h 29m 8.4s
DEC = 11° 52’ 12.7”
Orientation
North is up
Field of View
0.1 x 0.1 arcminutes
Constellation
Orion

Color Mapping

  Telescope Spectral Band Wavelength
Orange ALMA (Band 6) Millimeter (12CO(J = 2 → 1)) 1.3 mm
Blue VLT (SPHERE) Infrared (H) 1.6 µm
Spectrum_ir1
Orange
Blue
Eso_eso2014c_1280
×
ID
eso2014c
Subject Category
B.3.6.2   B.3.7.2.1  
Subject Name
GW Orionis
Credits
ESO/Exeter/Kraus et al., ALMA (ESO/NAOJ/NRAO)
Release Date
2020-09-03T20:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso2014c/
Type
Observation
Image Quality
Distance Notes
Facility
Atacama Large Millimeter/submillimeter Array, Very Large Telescope
Instrument
Band 6, SPHERE
Color Assignment
Orange, Blue
Band
Millimeter, Infrared
Bandpass
12CO(J = 2 → 1), H
Central Wavelength
1300000, 1625
Start Time
Integration Time
Dataset ID
None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
82.2849633278, 11.8701807192
Reference Dimension
754.0, 754.0
Reference Pixel
377.0, 377.0
Scale
-1.16501850625e-06, 1.16501850625e-06
Rotation
-0
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
https://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
eso2014c
Metadata Date
2024-02-22T14:19:26.894317
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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