NASA's Chandra X-ray Observatory Finds Planet That Makes Star Act Deceptively Old

Chandra_579_1024

chandra_579 September 16th, 2014

Credit: X-ray: NASA/CXC/SAO/I.Pillitteri et al; Optical: DSS; Illustration: NASA/CXC/M.Weiss

The artist's illustration featured in the main part of this graphic depicts a star and its planet, WASP-18b, a giant exoplanet that orbits very close to it. A new study using Chandra data has shown that WASP-18b is making the star that it orbits act much older than it actually is. The lower inset box reveals that no X-rays were detected during a long Chandra observation. This is surprising given the age of the star, suggesting the planet is weakening the star's magnetic field through tidal forces.

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2014/wasp18/

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

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

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Image Details Image Details

Image Type
Collage
Object Name
WASP-18
Subject - Milky Way
Planet > Special Cases > Transiting

Distance Details Distance

Universescale1
326 light years

Position Details Position Details

Position (ICRS)
RA = 1h 37m 25.0s
DEC = -45° 40’ 40.1”
Constellation
Phoenix

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Magenta Chandra (ACIS) X-ray (X-ray) 826.7 pm
Blue DSS (DSS2B) Optical (B-band) 443.0 nm
Green DSS (DSS2R) Optical (R-band) 660.0 nm
Red DSS (DSS2R) Optical (IR-band) 798.0 nm
Describes inset X-ray and Optical images
Spectrum_xray1
Magenta
Blue
Green
Red
Chandra_579_1280
×
ID
579
Subject Category
B.1.3.1  
Subject Name
WASP-18
Credits
X-ray: NASA/CXC/SAO/I.Pillitteri et al; Optical: DSS; Illustration: NASA/CXC/M.Weiss
Release Date
2014-09-16
Lightyears
326
Redshift
326
Reference Url
http://chandra.harvard.edu/photo/2014/wasp18/
Type
Collage
Image Quality
Good
Distance Notes
Facility
Chandra, DSS, DSS, DSS
Instrument
ACIS, DSS2B, DSS2R, DSS2R
Color Assignment
Magenta, Blue, Green, Red
Band
X-ray, Optical, Optical, Optical
Bandpass
X-ray, B-band, R-band, IR-band
Central Wavelength
0.8267, 443, 660, 798
Start Time
Integration Time
Dataset ID
Notes
D
Coordinate Frame
ICRS
Equinox
J200
Reference Value
24.3542, -45.6778
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
Position
FITS Header
Notes
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
wasp18.tif
Metadata Date
2014-09-17T11:33:10-04:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
326 light years

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