HIFI spectrum of Comet Garradd

Nhsc_nhsc2009-021i_1024

nhsc_nhsc2009-021i November 27th, 2009

Credit: ESA/NASA/JPL-Caltech

This is one of the early spectra obtained with the HIFI instrument on Herschel. In this spectrum of Comet Garradd the strong water line is clearly evident. HIFI studies will compare the characteristics of water and volatile organic molecules released by different comets in the Solar System as they approach the Sun.

Comets, amalgamations of small dust grains held together by ice, were formed some 4.5 billion years ago in cold, outer regions of the Solar system. For most of their history, comets dwell far from the Sun and hence, they represent a rather pristine record of the early conditions when the Solar System and the planets were formed. Comets may have contributed greatly to the inventory of volatiles such as water on the Earth and other terrestrial planets. Small perturbations in their orbit can propel comets inwards. When they approach the Sun, the increased heat sublimates the ice releasing water and other molecules into the vapour phase; this means that the composition and characteristics of the comet can be easily measured.

Provider: Herschel Space Observatory

Image Source: https://www.herschel.caltech.edu/image/nhsc2009-021i

Curator: NASA Herschel Science Center, Pasadena, CA, USA

Image Use Policy: http://www.jpl.nasa.gov/imagepolicy/

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Image Details

Image Type
Chart
Object Name
Comet Garradd
Subject - Solar System
Interplanetary Body > Comet
Nhsc_nhsc2009-021i_1280
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ID
nhsc2009-021i
Subject Category
A.2.2  
Subject Name
Comet Garradd
Credits
ESA/NASA/JPL-Caltech
Release Date
2009-11-27
Lightyears
Redshift
Reference Url
https://www.herschel.caltech.edu/image/nhsc2009-021i
Type
Chart
Image Quality
Good
Distance Notes
Facility
Instrument
Color Assignment
Band
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
NASA Herschel Science Center
URL
http://www.herschel.caltech.edu/
Name
Email
Telephone
Address
1200 E. California Blvd.
City
Pasadena
State/Province
CA
Postal Code
91125
Country
USA
Rights
http://www.jpl.nasa.gov/imagepolicy/
Publisher
Publisher ID
nhsc
Resource ID
Metadata Date
2018-06-21T00:07:34Z
Metadata Version
1.2
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Detailed color mapping information coming soon...

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