16914
收藏DataCite Commons2023-04-21 更新2025-04-15 收录
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We propose WFC3-UVIS F336W comma F438W comma and F814W observations for 8 Luminous Infrared Galaxies (LIRGs) in the Great Observatories All-Sky LIRG Survey (GOALS) scheduled for JWST Cycle 1 (GO1) observations. With a proprietary period of 0 days for 50% of the GO1 LIRGs comma observations taken now will provide the concurrent WFC3-UVIS imaging necessary to reliably age-date the star clusters detected in these systems. In addition to our science goals these data will be made available for use by the community immediately comma ensuring the maximum science return for the inaugural JWST Cycle. Recent HST observations provide evidence that the rate of cluster destruction in the nuclear regions of LIRGs is higher than that in their extranuclear regions comma and higher than that observed in normal star-forming galaxies. The combination of HST and JWST NIRSPEC and MIRI IFU observations make possible a complete inventory of the properties of star clusters in the nuclear regions. The HST filters are needed to break the age-reddening degeneracy comma and the JWST IFU observations will detect hydrogen recombination and PAH emission associated with the most embedded nuclear clusters. We will measure key properties such as the fraction of star formation residing in clusters comma the nuclear and extranuclear cluster destruction rates comma and the cluster formation efficiency. No telescopes other than the combination of HST and JWST are capable of obtaining the deep comma high-resolution data required for such a multi-wavelength study of star clusters in LIRGs.
提供机构:
European Space Agency
创建时间:
2023-04-21



