First Discovery of an Extragalactic Hot Molecular Core
The discovery, which marks the first important step for observational studies of extragalactic hot molecular cores and challenges the hidden chemical diversity of our universe, appears in a paper in The Astrophysical Journal Volume 827.
The scientists from Tohoku University, the University of Tokyo, the National Astronomical Observatory of Japan, and the University of Tsukuba, used the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile to observe a newborn star located in the Large Magellanic Cloud, one of the closest neighbors of our Galaxy. As a result, a number of radio emission lines from various molecular gas are detected, which indicates the presence of a hot molecular core associated with the observed newborn star (Fig. 1 and 2).
Fig.1) Artist’s concept image of the hot molecular core discovered in the Large Magellanic Cloud.
Credit: FRIS/Tohoku University. The figure is a derivative work of the following sources (ESO/M. Kornmesser; NASA, ESA, and S. Beckwith (STScI) and the HUDF Team; NASA/ESA and the Hubble Heritage Team (AURA/STScI)/HEI).
“This is the first detection of an extragalactic hot molecular core, and it demonstrates the great capability of new generation telescopes to study astrochemical phenomena beyond our Galaxy,” said Dr. Takashi Shimonishi, an astronomer at Tohoku University, Japan, and the paper’s lead author. “The observations have suggested that the chemical compositions of materials that form stars and planets are much more diverse than we expected. “
ALMA is funded by ESO on behalf of its Member States, by NSF in cooperation with the National Research Council of Canada (NRC) and the National Science Council of Taiwan (NSC) and by NINS in cooperation with the Academia Sinica (AS) in Taiwan and the Korea Astronomy and Space Science Institute (KASI).
ALMA construction and operations are led by ESO on behalf of its Member States; by the National Radio Astronomy Observatory (NRAO), managed by Associated Universities, Inc. (AUI), on behalf of North America; and by the National Astronomical Observatory of Japan (NAOJ) on behalf of East Asia. The Joint ALMA Observatory (JAO) provides the unified leadership and management of the construction, commissioning and operation of ALMA.
Contacts and sources:
Takashi Shimonishi
Frontier Research Institute for Interdisciplinary Sciences
Tohoku University
Citation: Authors: Takashi Shimonishi, Takashi Onaka, Akiko Kawamura, Yuri Aikawa
Title: The Detection of a Hot Molecular Core in the Large Magellanic Cloud with ALMA
Journal: The Astrophysical Journal, 827, 72
DOI: http://dx.doi.org/10.3847/0004-637X/827/1/72
Source:
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