Revealing Dusty Supernovae in High-redshift (Ultra) Luminous Infrared Galaxies through Near-infrared Integrated Light Variability

被引:3
作者
Yan, Haojing [1 ]
Ma, Zhiyuan [1 ]
Beacom, John F. [2 ,3 ,4 ]
Runge, James [1 ]
机构
[1] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA
[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[3] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA
[4] Ohio State Univ, Ctr Cosmol & AstroParticle Phys CCAPP, Columbus, OH 43210 USA
关键词
dust; extinction; galaxies: active; galaxies: starburst; submillimeter: galaxies; supernovae: general; TIDAL DISRUPTION; NUCLEAR REGIONS; STAR-FORMATION; DISCOVERY; RATES; EVOLUTION; SEARCH; 2010P;
D O I
10.3847/1538-4357/aadf38
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Luminous and ultra-luminous infrared galaxies ((U)LIRGs) are rare today but are increasingly abundant at high redshifts. They are believed to be dusty starbursts, and hence should have high rates of supernovae (multiple events per year). Due to their extremely dusty environment, however, such supernovae could only be detected in rest-frame infrared and longer wavelengths, where our current facilities lack the capability of finding them individually beyond the local universe. We propose a new technique for higher redshifts, which is to search for the presence of supernovae through the variability of the integrated rest-frame infrared light of the entire hosts. We present a pilot study to assess the feasibility of this technique. We exploit a unique region, the "IRAC Dark Field" (IDF), that the Spitzer Space Telescope has observed for more than 14 years in 3-5 mu m. The IDF also has deep far-infrared data (200-550 mu m) from the Herschel Space Observatory that allow us to select high-redshift (U) LIRGs. We obtain a sample of (U) LIRGs that have secure optical counterparts, and examine their light curves in 3-5 mu m. While the variabilities could also be caused by AGNs, we show that such contaminations can be identified. We present two cases where the distinct features in their light curves are consistent with multiple supernovae overlapping in time. Searching for supernovae this way will be relevant to the James Webb Space Telescope (JWST) to probe high-redshift (U)LIRGs into their nuclear regions where JWST will be limited by its resolution.
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页数:11
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