Spirals and supernovae

Esahubble_potw1811a_1024

esahubble_potw1811a March 12th, 2018

Credit: ESA/Hubble & NASA, A. Riess (STScl/JHU)

This stunning image from Hubble shows the majestic galaxy NGC 1015, found nestled within the constellation of Cetus (The Whale) 118 million light-years from Earth. In this image, we see NGC 1015 face-on, with its beautifully symmetrical swirling arms and bright central bulge creating a scene akin to a sparkling Catherine wheel firework. NGC 1015 has a bright, fairly large centre and smooth, tightly wound spiral arms and a central bar of gas and stars. This shape leads NGC 1015 to be classified as a barred spiral galaxy just like our home, the Milky Way. Bars are found in around two-thirds of all spiral galaxies, and the arms of this galaxy swirl outwards from a pale yellow ring encircling the bar itself. Scientists believe that any hungry black holes lurking at the centre of barred spirals funnel gas and energy from the outer arms into the core via these glowing bars, feeding the black hole, fueling star birth at the centre and building up the galaxys central bulge. In 2009, a Type Ia supernova named SN 2009ig was spotted in NGC 1015 one of the bright dots to the upper right of the galaxys centre. These types of supernova are extremely important: they are all caused by exploding white dwarfs which have companion stars, and always peak at the same brightness. Knowing the true brightness of these events, and comparing this with their apparent brightness, gives astronomers a unique chance to measure distances in the Universe.

Image Source: https://www.spacetelescope.org/images/potw1811a/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
NGC 1015
Subject - Local Universe
Galaxy > Type > Spiral
Galaxy > Type > Barred
Esahubble_potw1811a_1280
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ID
potw1811a
Subject Category
C.5.1.1   C.5.1.2  
Subject Name
NGC 1015
Credits
ESA/Hubble & NASA, A. Riess (STScl/JHU)
Release Date
2018-03-12T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1811a/
Type
Observation
Image Quality
Distance Notes
Facility
Instrument
Color Assignment
Band
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
3928.0, 4538.0
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw1811a
Metadata Date
2018-03-02T13:24:10+01:00
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.