37 citations · 82 across the 3 of their papers we have counts for
5 papers · 1 filter
Core-collapse supernovae in low-metallicity environments and future all-sky transient surveys
D. R. Young, S. J. Smartt, S. Mattila +5
Aims: Massive stars in low-metallicity environments may produce exotic explosions such as long-duration gamma-ray bursts and pair-instability supernovae when they die as core-colla…
Multi-object Spectroscopy of Young Star Clusters in NGC 4676
Li-Hsin Chien, Joshua E. Barnes, Lisa J. Kewley +1
Galaxy interactions are known to trigger starbursts. The young star clusters formed in mergers may be young globular clusters. The ages of these young star clusters yield the timin…
Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars
Rajib Ganguly, Michael S. Brotherton, Nahum Arav +35
We present low-resolution ultraviolet spectra of 14 low redshift (z<0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outf…
23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7
Brian J. Barris, John Tonry, Stephane Blondin +29
We present photometric and spectroscopic observations of 23 high redshift supernovae spanning a range of z=0.34-1.03, 9 of which are unambiguously classified as Type Ia. These supe…
Spectroscopy of Ultra--Steep Spectrum Radio Sources: A Sample of z>2 Radio Galaxies
H. J. A. Röttgering, R. van Ojik, G. K. Miley +3
We present spectroscopic observations for 64 radio galaxies having ultra steep radio spectra. Twenty-nine objects have redshifts , the largest redshifts being almost 4. Our ul…