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24 April 2024 |
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The star-formation rate in the host of GRB 990712 | | P. M. Vreeswijk
; R. P. Fender
; M. A. Garrett
; S. J. Tingay
; A. S. Fruchter
; L. Kaper
; | | Date: |
25 Oct 2001 | | Subject: | astro-ph | | Affiliation: | University of Amsterdam; JIVE; ATNF; STScI | | Abstract: | We have observed the host galaxy of GRB 990712 at 1.4 GHz with the Australia Telescope Compact Array, to obtain an estimate of its total star-formation rate. We do not detect a source at the position of the host. The 2 sigma upper limit of 70 microJy implies that the total star-formation rate is lower than 100 Msun/yr, using conservative values for the spectral index and cosmological parameters. This upper limit is in stark contrast with recent reports of radio/submillimeter-determined star-formation rates of roughly 500 Msun/yr for two other GRB host galaxies. Our observations present the deepest radio-determined star-formation rate limit on a GRB host galaxy yet, and show that also from the unobscured radio point-of-view, not every GRB host galaxy is a vigorous starburst. | | Source: | arXiv, astro-ph/0110547 | | Services: | Forum | Review | PDF | Favorites | |
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