The NASA/ESA Hubble Space Telescope took this photo of barred spiral galaxy NGC 1672, visible from the southern hemisphere.
This Hubble image shows NGC 1672, a barred spiral galaxy about 49 million light-years away in the constellation Sera. Color images were created from separate exposures taken in the ultraviolet, visible, and near-infrared regions of the spectrum using Hubble’s Advanced Survey Camera (ACS) and Wide Field Camera 3 (WFC3). Six filters were used to sample different wavelengths. Color is obtained by assigning different hues to each monochromatic image associated with an individual filter. Image credits: ESA / Hubble / NASA / O. Fox / L. Jenkins / S. Van Dijk / A. Filipenko / J. Li / PHANGS-HST Team / D. De Martin / M. Zamani.
NGC1672 is located approximately 49 million light-years away in the constellation Sera.
This galaxy, also known as ESO 118-43, IRAS 04449-5920, LEDA 15941, or VV 826, has a diameter of 75,000 light years.
it was discovered It was proposed by Scottish astronomer James Dunlop on November 5, 1826.
NGC 1672 is a typical barred spiral galaxy, which differs from normal spiral galaxies in that its spiral arms do not twist all the way to the center.
Instead, they are attached to each end of the star’s straight rod that surrounds the core.
NGC 1672 is visible almost head-on and shows regions of intense star formation.
The highest concentrations of star-forming regions are near the edges of galaxies’ strong galactic bars.
NGC 1672 is Seyfert Galaxyis named after astronomer Carl Keenan Seifert, who extensively studied galaxies containing active nuclei in the 1940s. The energy output of these nuclei can exceed that of the host galaxy.
Active galaxies also include the exotically named quasars and blazars.
Each type has unique characteristics, and they are all thought to be powered by the same engine – a supermassive black hole – but seen from different angles.
“NGC 1672 is a versatile light show that showcases the impressive lights of a variety of celestial objects,” Hubble astronomers said in a statement.
“Like other spiral galaxies, its disk is filled with billions of bright stars, giving it a beautiful glow.”
“Along its two large arms, bubbles of hydrogen gas glow with a striking red light due to the powerful radiation of newly formed stars within.”
“There are some particularly spectacular stars near the center: newly formed, extremely hot stars that are embedded in a ring of hot gas and emit powerful X-rays,” the researchers said. added.
“And at its center lies an even brighter X-ray source, an active galactic nucleus produced by the heated accretion disk around NGC 1672’s supermassive black hole. This makes NGC 1672 a Seyfert galaxy. Masu.”
“But the highlight of the new photos is the most fleeting and ephemeral of these lights: supernovae. SN2017 GaxIt appears in only one of the six Hubble images that make up this composite image. ”
“this is Type I supernova Caused by the collapse of a core and the subsequent explosion of a giant star, it goes from invisible to new light in the sky in just a few days. ”
“In images taken later that year, the supernova was already fading, so it’s only visible here as a small green dot just below the bend of the spiral arm on the right.”
“In fact, this was intentional. We wanted to look for companion stars that the supernova progenitor might have had, something that would be impossible to find outside of a living supernova.”
Source: www.sci.news
