A problem that has plagued astronomers working in the infrared has been resolved through a study utilizing data from both terrestrial and sky-based telescopes. The findings, which were published in Nature Astronomy on April 20, could aid in the production of more precise observations regarding the c
Observations of the dwarf galaxy Markarian 71 with infrared and optical telescopes resolve a problem in infrared astronomy and allow better measurements of the composition of galaxies and interstellar dust clouds. Composite image of Markarian 71 from the Hubble Space Telescope. Credit: Hubble Space Telescope/NASA
The recombination line method consistently produces measurements about double those from collisionally excited lines. Scientists attribute the discrepancy to temperature fluctuations in gas clouds, but this has not been directly proven, Chen said. The Herschel Space Observatory, named after astronomers William and Caroline Herschel, was an infrared space telescope operated by theWith data from these instruments, Chen and Jones examined oxygen abundance in Markarian 71 while correcting for temperature fluctuations. They found that the result from collisionally excited infrared lines was still 50% less than that from the recombination line method, even after eliminating the effect of temperature.
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