Astronomers using the NASA/ESA Hubble Space Telescope have taken surprising new photos of spiral galaxy NGC 2090.
This Hubble image shows NGC 2090, a spiral galaxy located south of the constellation Columba, about 40 million light-years away. Color images were created from separate exposures taken in the ultraviolet, visible, and near-infrared regions of the spectrum using Hubble's Wide Field Camera 3 (WFC3). This is based on data obtained through six filters. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / D. Tilker.
NGC2090 It is a spiral galaxy located south of the constellation Columba.
Also known as ESO 363-23, IRAS 05452-3416, LEDA 17819. discovered It was announced by Scottish astronomer James Dunlop on October 29, 1826.
“NGC 2090 is notable as part of a group of galaxies being studied. Hubble's Extragalactic Distance Scale Key Project“This study aimed to determine a new, state-of-the-art value for the Hubble constant, one of the main scientific goals of the then-new telescope,” Hubble astronomers said in a statement.
“NGC 2090's contribution was to calibrate the Tully-Fisher (TF) distance method by observing Cepheid variable stars in the galaxy.”
“Cepheid-based measurements from a 1998 study estimated the distance of NGC 2090 to be 37 million light-years.”
“Latest measurements in 2020 using the TF method place NGC 2090 slightly further away, at 40 million light-years.”
Before and after that project, NGC 2090 has been well studied as a very prominent nearby example of star formation.
It has been described as a cotton-like spiral, meaning a spiral galaxy with a speckled, dusty disk and flaky or no visible arms.
“This Hubble image gives a good indication of why NGC 2090 received such a description, with its spiral arms looking like lanes of light winding through the dust,” the astronomers said. said.
“NGC 2090 remains an active galaxy, with clusters of star formation in various stages of evolution spread throughout the disk.”
“Investigating star formation and the movement of matter within galaxies was the motivation for these Hubble observations taken in October of this year.”
“Likewise, Hubble's partner in space astronomy, NASA/ESA/CSA's James Webb Space Telescope, also scouted this galaxy to add infrared data to the picture of galaxy evolution.”
Source: www.sci.news
