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The NASA/ESA Hubble Space Telescope has actually recorded a striking picture of an obscure galaxy called WISEA J070815.11 +210422.3.
SN 2022aajn shows up as a blue dot at the center of this Hubble image, lightening up the hazy body of WISEA J070815.11 +210422.3. Image credit: NASA/ ESA/ Hubble/ R.J. Foley, UC Santa Cruz.
WISEA J070815.11 +210422.3 lies roughly 600 million light-years away in the constellation of Gemini.
This image was taken approximately 2 months after the SN 2022aajn supernova occasion took place in the galaxy.
“Other than the statement of its discovery in November 2022, SN 2022aajn has actually never ever been the topic of released research study,” the Hubble astronomers composed in a declaration.
“Why, then, would Hubble observe this supernova? SN 2022aajn is what’s referred to as a Type Ia supernova, which arises from the surge of the core of a dead star.”
Type Ia supernovae aid astronomers determine the range to far galaxies.
“This is possible since Type Ia supernovae are believed to be of the very same intrinsic luminosity– no matter how intense they appear from Earth, they put out the exact same quantity of light as other Type Ia supernovae,” the scientists composed.
“Thus, by comparing the observed brightness to the anticipated brightness, we can determine the range to the supernova and its host galaxy.”
“This apparently easy measurement technique is made complex by cosmic dust.”
“The further away a supernova is, the fainter and redder it will appear– however intergalactic dust can make a supernova appear fainter and redder also.”
“To comprehend this problem, we will utilize Hubble to survey an overall of 100 Type Ia supernovae in 7 wavelength bands from the ultraviolet to the near-infrared.”
The color picture of WISEA J070815.11 +210422.3 was made from different direct exposures taken in the infrared area of the spectrum with Hubble’s Wide Field Camera 3 (WFC3).
4 filters were utilized to sample different infrared wavelengths. The color arises from designating various shades to each monochromatic image connected with a specific filter.
“This image integrates information taken at 4 infrared wavelengths,” the researchers composed.
“Infrared light goes through dust more quickly than noticeable or ultraviolet light.”
“By comparing the brightness of the tested supernovae throughout various wavelengths, we can disentangle the results of dust and range, assisting to enhance measurements of galaxies billions of light-years away and even the growth of our Universe.”
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