Researchers re-evaluated extremely red objects (EROs) in the JWST data and found similarities with BluDOGs previously identified from Subaru Telescope data. This discovery contributes to a broader understanding of quasar evolution and points to the need for further research using advanced telescopes like GREX-PLUS. Credit: SciTechDaily.com
Space researchers have discovered that extremely red objects (EROs) exist in space. james webb space telescope This data is similar to the Subaru Telescope’s BluDOG, challenging previous assumptions and highlighting the complexity of studying quasar evolution.
Not every discovery is actually a new discovery. This is the case for extremely red objects (EROs) found in the James Webb Space Telescope (JWST) data. The analysis showed that it is very similar to a blue-excessive dust-covered galaxy (BluDOG) previously reported using data from the Subaru Telescope.
Quasars, some of the brightest objects in the universe, are powered by supermassive black holes with masses that can reach more than a billion times that of the Sun. Although these objects are the focus of much research, how they form is still poorly understood. A leading theory is that quasars form within galaxies with clouds of gas and dust that obscure the growing quasar until they become powerful enough to blow away the clouds. If this is true, we should be able to catch a short window of time when a quasar breaks out of the cloud.
A galaxy covered in blue excess dust (BluDOG) photographed by the Subaru Telescope.Credit: National Astronomical Observatory of Japan/HSC cooperation
Because the transition period is short, we must observe a large number of prequasar candidates and hope that we are lucky enough to catch a galaxy just as the quasar begins to erupt. Examining the JWST data, a group of extremely red objects (EROs) were identified as possible transitional quasars. But researchers at the Subaru telescope, a Japanese telescope in Hawaii, say that although ERO is called “red,” it is similar to the blue-excess dust-encrusted galaxy (BluDOG) found in big data. I noticed that it also has an important blue component. It was obtained from the Subaru Telescope and described in last year’s report.
Our analysis shows that ERO and BluDOG are likely objects of the same class, but that there are also important differences. One possibility is that ERO is at an earlier stage of evolution than BluDOG. More candidate samples need to be collected to determine the true relationship between ERO, BluDOG, and quasars. Larger samples will be studied by next-generation astronomical instruments, including a planned infrared space telescope project in Japan called GREX-PLUS.
References:
“Similarities between the compact, very red object discovered by JWST at the dawn of the universe and the blue, dust-covered galaxy known at the noon of the universe” Akatoki Noboriguchi, Akio Inoue, Toru Nagao, Yoshiki Toba, Toru Misawa, December 14, 2023 of Astrophysics Journal Letter.
DOI: 10.3847/2041-8213/ad0e00
“The extreme properties of four blue dust-covered galaxies revealed by optical spectroscopy” Akatoki Noboriguchi, Toru Nagao, Yoshiki Toba, Kohei Ichikawa, Masaru Kajisawa, Nanako Kato, Toshihiro Kawaguchi, Hideo Matsubara , Yoshiki Matsuoka, Kyoko Onishi, Masafusa Onoe, Nozomu Tamada, Koki Terao, Yuichi Terashima, Yoshihiro Ueda, Takuji Yamashita, December 23, 2022, of astrophysical journal.
DOI: 10.3847/1538-4357/aca403
“Optical properties of galaxies covered with infrared bright dust seen with Subaru Hyper Supreme Cam” Akatoki Noboriguchi, Toru Nagao, Yoshiki Toba, Mana Niida, Masaru Kajisawa, Masafusa Onoe, Yoshiki Matsuoka, Takuji Yamashita, Yuyan Zhang , Toshihiro Kawaguchi, Yutaka Komiyama, Kodai Nobehara, Yuichi Terashima, Yoshihiro Ueda, May 13, 2019, astrophysical journal.
DOI: 10.3847/1538-4357/ab1754
Source: scitechdaily.com
