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IYL 2015: Chandra Celebrates The International Year of Light

  • New images are being released to celebrate the International Year of Light 2015.

  • Each image contains X-rays from Chandra, along with data in other types of light from various telescopes.

  • These images illustrate how astronomers use different types of light together to get a more complete view of objects in space.

The year of 2015 has been declared the International Year of Light (IYL) by the United Nations. Organizations, institutions, and individuals involved in the science and applications of light will be joining together for this yearlong celebration to help spread the word about the wonders of light.

In many ways, astronomy uses the science of light. By building telescopes that can detect light in its many forms, from radio waves on one end of the "electromagnetic spectrum" to gamma rays on the other, scientists can get a better understanding of the processes at work in the Universe.

NASA's Chandra X-ray Observatory explores the Universe in X-rays, a high-energy form of light. By studying X-ray data and comparing them with observations in other types of light, scientists can develop a better understanding of objects likes stars and galaxies that generate temperatures of millions of degrees and produce X-rays.

To recognize the start of IYL, the Chandra X-ray Center is releasing a set of images that combine data from telescopes tuned to different wavelengths of light. From a distant galaxy to the relatively nearby debris field of an exploded star, these images demonstrate the myriad ways that information about the Universe is communicated to us through light.

The images, beginning at the upper left and moving clockwise, are:

M51

Messier 51 (M51):
This galaxy, nicknamed the "Whirlpool," is a spiral galaxy, like our Milky Way, located about 30 million light years from Earth. This composite image combines data collected at X-ray wavelengths by Chandra (purple), ultraviolet by the Galaxy Evolution Explorer (GALEX, blue); visible light by Hubble (green), and infrared by Spitzer (red).

SNR E0519-69.0

SNR E0519-69.0:
When a massive star exploded in the Large Magellanic Cloud, a satellite galaxy to the Milky Way, it left behind an expanding shell of debris called SNR 0519-69.0. Here, multimillion degree gas is seen in X-rays from Chandra (blue). The outer edge of the explosion (red) and stars in the field of view are seen in visible light from Hubble.

MSH 11-62

MSH 11-62:
When X-rays, shown in blue, from Chandra and XMM-Newton are joined in this image with radio data from the Australia Telescope Compact Array (pink) and visible light data from the Digitized Sky Survey (DSS, yellow), a new view of the region emerges. This object, known as MSH 11-62, contains an inner nebula of charged particles that could be an outflow from the dense spinning core left behind when a massive star exploded.

Cygnus A

Cygnus A:
This galaxy, at a distance of some 700 million light years, contains a giant bubble filled with hot, X-ray emitting gas detected by Chandra (blue). Radio data from the NSF's Very Large Array (red) reveal "hot spots" about 300,000 light years out from the center of the galaxy where powerful jets emanating from the galaxy's supermassive black hole end. Visible light data (yellow) from both Hubble and the DSS complete this view.

RCW 86

RCW 86:
This supernova remnant is the remains of an exploded star that may have been witnessed by Chinese astronomers almost 2,000 years ago. Modern telescopes have the advantage of observing this object in light that is completely invisible to the unaided human eye. This image combines X-rays from Chandra (pink and blue) along with visible emission from hydrogen atoms in the rim of the remnant, observed with the 0.9-m Curtis Schmidt telescope at the Cerro Tololo Inter-American Observatory (yellow).

In addition to these newly released images, the Chandra X-ray Center has created a new online repository of images called "Light: Beyond the Bulb" for IYL. This project places astronomical objects in context with light in other fields of science and research.

NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory in Cambridge, Massachusetts, controls Chandra's science and flight operations.

For more information on "Light: Beyond the Bulb," visit the website at http://lightexhibit.org

For more information on the International Year of Light, go to http://www.light2015.org/Home.html

Fast Facts for Whirlpool Galaxy:
Credit  X-ray: NASA/CXC/SAO; UV: NASA/JPL-Caltech; Optical: NASA/STScI; IR: NASA/JPL-Caltech
Release Date  January 22, 2015
Scale  Image is 6 x 10 arcmin across. (About 52,000 x 87,000 light years)
Category  Normal Galaxies & Starburst Galaxies
Coordinates (J2000)  RA 13h 29m 52.3s | Dec +47 11' 54
Constellation  Canes Venatici
Observation Dates  11 pointings between Mar 2000 and Oct 2012
Observation Time  232 hours 10 min (9 days 16 hours 10 min)
Obs. IDs  353, 354, 1622, 3932, 13812-13816, 15496, 15553
Instrument  ACIS
Also Known As NGC 5194, NGC 5195
Color Code  X-ray (Purple); Ultraviolet (Blue); Optical (Green); Infrared (Red)
IR
Optical
UV
X-ray
Distance Estimate  About 30 million light years
distance arrow
Fast Facts for SNR E0519-69.0:
Credit  X-ray: NASA/CXC/Rutgers/J.Hughes; Optical: NASA/STScI
Release Date  January 22, 2015
Scale  Image is 1.5 arcmin across. (about 70 light years)
Category  Supernovas & Supernova Remnants
Coordinates (J2000)  RA 05h 19m 34.90s | Dec -69 02' 07.30"
Constellation  Dorado
Observation Dates  4 pointings between Jun 2000 and Feb 2010
Observation Time  25 hours 16 min (1 day 1 hour 16 min)
Obs. IDs  118, 11241, 12062, 12063
Instrument  ACIS
Color Code  X-ray (Blue); Optical (Red, Green, Blue)
Optical
X-ray
Distance Estimate  About 160,000 light years
distance arrow
Fast Facts for MSH 11-62:
Credit  X-ray: NASA/CXC/SAO/P.Slane et al; Optical: DSS; Radio: CSIRO/ATNF/ATCA
Release Date  January 22, 2015
Scale  Image is 55 arcmin across. (256 light years)
Category  Supernovas & Supernova Remnants
Coordinates (J2000)  RA 11h 11m 52.00s | Dec -60 39' 12.00"
Constellation  Carina
Observation Dates  1 pointing in Apr 2002 and 8 between Oct 2013 and Jan 2014
Observation Time  131 hours 17 min (5 days 11 hours 17 min)
Obs. IDs  2782, 14822-14824, 16496, 16497, 16512, 16541, 16566
Instrument  ACIS
Color Code  X-ray (Blue); Optical (Yellow); Radio (Pink)
Radio
Optical
X-ray
Distance Estimate  About 16,000 light years
distance arrow
Fast Facts for Cygnus A:
Credit  X-ray: NASA/CXC/SAO; Optical: NASA/STScI; Radio: NSF/NRAO/AUI/VLA
Release Date  January 22, 2015
Scale  Image is 2.7 arcmin across. (about 550,000 light years)
Category  Quasars & Active Galaxies
Coordinates (J2000)  RA 19h 59m 28.30s | Dec +40° 44' 02.00"
Constellation  Cygnus
Observation Dates  11 pointings between Mar 2000 and Sep 2005
Observation Time  67 hours 35 min (2 days 19 hours 35min)
Obs. IDs  359, 360, 1707, 5830, 5831, 6225, 6226, 6228, 6229, 6250, 6252
Instrument  ACIS
Color Code  X-ray: Blue; Optical: Yellow; Radio: Red
Radio
Optical
X-ray
Distance Estimate  About 700 million light years
distance arrow
Fast Facts for RCW 86:
Credit  X-ray: NASA/CXC/MIT/D.Castro et al, Optical: NOAO/AURA/NSF/CTIO
Release Date  January 22, 2015
Scale  Image is 19.5 arcmin across. (about 46.5 light years)
Category  Supernovas & Supernova Remnants
Coordinates (J2000)  RA 14h 45m 02.30s | Dec -62º 20' 32.00"
Constellation  Circinus
Observation Dates  3 pointings in Feb, 2013
Observation Time  28 hours 57 min (1 day 4 hours 57 min )
Obs. IDs  14890, 15608, 15609
Instrument  ACIS
Also Known As G315.4-2.1
Color Code  X-ray (Blue and Pink); Optical (Yellow)
Optical
X-ray
Distance Estimate  About 8,200 light years
distance arrow
Visitor Comments (4)

Why can't I find a button to share this page on Facebook? These are so totally awesome. Thank you.

Posted by Marti C on Friday, 10.9.15 @ 14:29pm


Absolutely gorgeous photos, great layout of information. Thank you for all you do.

Posted by Joseph Connolly on Monday, 02.2.15 @ 14:37pm


This information and research is fascinating and the photography is fabulous. thanks to all who put it together.

Posted by marina newby on Saturday, 01.24.15 @ 08:50am


This is great stuff...

Posted by calvin on Friday, 01.23.15 @ 02:53am


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