SPIRE image of M74 at 250 m

Nhsc_nhsc2009-017a_1024

nhsc_nhsc2009-017a July 9th, 2009

Credit: ESA and the SPIRE Consortium

On 24 June 2009, SPIRE recorded its first images during the in-orbit commissioning phase of the Herschel mission. This picture, made before fine-tuning or in-orbit final calibration was performed, shows a SPIRE image of the galaxy M74 at a wavelength of 250 microns. The image traces emission by dust in clouds where star formation are active, and the nucleus and spiral arms show up clearly. Dust is part of the interstellar material fuelling star formation, and this image effectively shows the reservoirs of gas and dust that are available to be turned into stars in the galaxy. Significantly, the image frame is also filled with many other galaxies which are much more distant and only show up as point sources. There are also some extended structures, possibly due to clouds of dust in our own galaxy.

M74 (also known as NGC 628) is a face-on spiral galaxy located about 24 million light-years from Earth in the constellation Pisces. Visible light, produced mainly by the stars within the galaxy, reveals a bright nucleus and well-defined spiral arms that contain many small, bright regions where young massive stars have formed recently. The submillimetre SPIRE image traces the cold dust between the stars, and the spiral arms appear much more enhanced. This galaxy also contains many faint dots that are actually distant galaxies in the background and dust radiating at submillimetre wavelengths but are too distant for the structure in the galaxies to be resolved.

Provider: Herschel Space Observatory

Image Source: https://www.herschel.caltech.edu/image/nhsc2009-017a

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
Observation
Object Name
Messier 74 M74 NGC 628
Subject - Local Universe
Galaxy > Type > Spiral

Distance

Universescale2
32,000,000 light years

Color Mapping

  Telescope Spectral Band Wavelength
Pseudocolor Herschel (SPIRE) Infrared 250.0 µm
Spectrum_ir1
Pseudocolor
Nhsc_nhsc2009-017a_1280
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ID
nhsc2009-017a
Subject Category
C.5.1.1  
Subject Name
Messier 74, M74, NGC 628
Credits
ESA and the SPIRE Consortium
Release Date
2009-07-09
Lightyears
32,000,000
Redshift
0.002192
Reference Url
https://www.herschel.caltech.edu/image/nhsc2009-017a
Type
Observation
Image Quality
Good
Distance Notes
Facility
Herschel
Instrument
SPIRE
Color Assignment
Pseudocolor
Band
Infrared
Bandpass
Central Wavelength
250000
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
2018-06-21T00:14:24Z
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
32,000,000 light years