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High Metallicity LGRB Hosts
J. F. Graham, A. S. Fruchter, E. M. Levesque +9
We present our imaging and spectroscopic observations of the host galaxies of two dark long bursts with anomalously high metallicities, LGRB 051022 and LGRB 020819B, which in conju…
No Correlation Between Host Galaxy Metallicity and Gamma-Ray Energy Release for Long-Duration Gamma-Ray Bursts
Emily M. Levesque, Alicia M. Soderberg, Lisa J. Kewley +1
We compare the redshifts, host galaxy metallicities, and isotropic (E_gamma,iso) and beaming-corrected (E_gamma) gamma-ray energy release of 16 long-duration gamma-ray bursts (LGRB…
The Double-Peaked 2008 Outburst of the Accreting Milli-Second X-ray Pulsar, IGR J00291+5934
F. Lewis, D. M. Russell, P. G. Jonker +18
In August 2008, the accreting milli-second X-ray pulsar (AMXP), IGR J00291+5934, underwent an outburst lasting ~ 100 days, the first since its discovery in 2004. We present data fr…
A High-Metallicity Host Environment for the Long-Duration GRB 020819
Emily M. Levesque, Lisa J. Kewley, John F. Graham +1
We present spectroscopic observations of the host galaxy and explosion site of the long-duration gamma-ray burst GRB 020819. We determine a metallicity for this host environment of…
The High-Metallicity Explosion Environment of the Relativistic Supernova 2009bb
E. M. Levesque, A. M. Soderberg, R. J. Foley +23
We investigate the environment of the nearby (d ~ 40Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a cent…
GRB 090426: The Environment of a Rest-Frame 0.35-second Gamma-Ray Burst at Redshift z=2.609
Emily M. Levesque, Joshua S. Bloom, Nathaniel R. Butler +14
We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst with an observed du…