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- W3100235722 abstract "We present a characterization of the close environment of GRB 980425 based on 5–160 μm spectro-imaging obtained with Spitzer. The gamma-ray burst GRB 980425 occurred in a nearby (z = 0.0085) SBc-type dwarf galaxy at a projected distance of 900 pc from an H ii region with strong signatures of Wolf–Rayet (WR) stars. While this WR region produces less than 5% of the B-band emission of the host, we find that it is responsible for 45% ± 10% of the total infrared luminosity, with a maximum contribution reaching 75% at 25–30 μm. This atypical property is rarely observed among morphologically relaxed dwarfs, suggesting a strong causal link with the gamma-ray burst (GRB) event. The luminosity of the WR region (L8–1000 μm = 4.6 × 108 L☉), the peak of its spectral energy distribution at ≲100 μm, and the presence of highly ionized emission lines (e.g., [Ne iii]) also reveal extremely young (<5 Myr) star-forming activity, with a typical timescale of only 47 Myr to double the stellar mass already built. Finally, the mid-IR over B-band luminosity ratio in this region is substantially higher than in star-forming galaxies with similar LIR, but it is lower than in young dust-enshrouded stellar clusters. Considering the modest obscuration measured from the silicate features (τ9.7 μm ∼ 0.015), this suggests that the WR region is dominated by one or several star clusters that have either partly escaped or cleared out their parent molecular cloud. Combined with the properties characterizing the whole population of GRB hosts, our results reinforce the idea that long GRBs mostly happen within or in the vicinity of relatively unobscured galactic regions harboring very recent star formation." @default.
- W3100235722 created "2020-11-23" @default.
- W3100235722 creator A5000936421 @default.
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- W3100235722 creator A5052810833 @default.
- W3100235722 creator A5053165153 @default.
- W3100235722 creator A5062010375 @default.
- W3100235722 date "2012-01-18" @default.
- W3100235722 modified "2023-09-30" @default.
- W3100235722 title "THE FIRST INFRARED STUDY OF THE CLOSE ENVIRONMENT OF A LONG GAMMA-RAY BURST" @default.
- W3100235722 cites W1537691167 @default.
- W3100235722 cites W1747345020 @default.
- W3100235722 cites W1827714327 @default.
- W3100235722 cites W1913860194 @default.
- W3100235722 cites W1917496003 @default.
- W3100235722 cites W1964925572 @default.
- W3100235722 cites W1973105125 @default.
- W3100235722 cites W1975498920 @default.
- W3100235722 cites W1979622417 @default.
- W3100235722 cites W1981724524 @default.
- W3100235722 cites W1989738078 @default.
- W3100235722 cites W1991506407 @default.
- W3100235722 cites W1995830728 @default.
- W3100235722 cites W2003271886 @default.
- W3100235722 cites W2003637061 @default.
- W3100235722 cites W2004719038 @default.
- W3100235722 cites W2008573568 @default.
- W3100235722 cites W2011679625 @default.
- W3100235722 cites W2014783219 @default.
- W3100235722 cites W2015267403 @default.
- W3100235722 cites W2015295900 @default.
- W3100235722 cites W2018858432 @default.
- W3100235722 cites W2022000830 @default.
- W3100235722 cites W2026654343 @default.
- W3100235722 cites W2030142534 @default.
- W3100235722 cites W2035879704 @default.
- W3100235722 cites W2036062947 @default.
- W3100235722 cites W2039197713 @default.
- W3100235722 cites W2041673535 @default.
- W3100235722 cites W2043830471 @default.
- W3100235722 cites W2044669640 @default.
- W3100235722 cites W2046271943 @default.
- W3100235722 cites W2048186190 @default.
- W3100235722 cites W2048274049 @default.
- W3100235722 cites W2055251063 @default.
- W3100235722 cites W2062643002 @default.
- W3100235722 cites W2081690957 @default.
- W3100235722 cites W2086199187 @default.
- W3100235722 cites W2088668851 @default.
- W3100235722 cites W2095855161 @default.
- W3100235722 cites W2102925874 @default.
- W3100235722 cites W2103734507 @default.
- W3100235722 cites W2107959100 @default.
- W3100235722 cites W2119573324 @default.
- W3100235722 cites W2120075609 @default.
- W3100235722 cites W2121359722 @default.
- W3100235722 cites W2124578544 @default.
- W3100235722 cites W2126920201 @default.
- W3100235722 cites W2128517068 @default.
- W3100235722 cites W2135510400 @default.
- W3100235722 cites W2139635167 @default.
- W3100235722 cites W2147847259 @default.
- W3100235722 cites W2148135404 @default.
- W3100235722 cites W2155225310 @default.
- W3100235722 cites W2155297672 @default.
- W3100235722 cites W2155475085 @default.
- W3100235722 cites W2156056293 @default.
- W3100235722 cites W2161314581 @default.
- W3100235722 cites W2161445781 @default.
- W3100235722 cites W2162282327 @default.
- W3100235722 cites W2165084703 @default.
- W3100235722 cites W2165611224 @default.
- W3100235722 cites W2166154336 @default.
- W3100235722 cites W2167262338 @default.
- W3100235722 cites W2167335950 @default.
- W3100235722 cites W2167751215 @default.
- W3100235722 cites W2168225683 @default.
- W3100235722 cites W2170344725 @default.
- W3100235722 cites W2953227652 @default.
- W3100235722 cites W3098794262 @default.
- W3100235722 cites W3099486837 @default.
- W3100235722 cites W3099574669 @default.
- W3100235722 cites W3099575410 @default.
- W3100235722 cites W3099853610 @default.
- W3100235722 cites W3100829985 @default.
- W3100235722 cites W3101390968 @default.
- W3100235722 cites W3101917313 @default.
- W3100235722 cites W3103050444 @default.
- W3100235722 cites W3104195283 @default.
- W3100235722 cites W3105350627 @default.
- W3100235722 cites W3105502586 @default.
- W3100235722 cites W3106461171 @default.
- W3100235722 cites W3122885296 @default.
- W3100235722 cites W3124846175 @default.
- W3100235722 cites W4289253751 @default.