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6 papers · 2 filters
VERITAS Observations of day-scale flaring of M87 in 2010 April
E. Aliu, T. Arlen, T. Aune +88
VERITAS has been monitoring the very-high-energy (VHE; >100GeV) gamma-ray activity of the radio galaxy M87 since 2007. During 2008, flaring activity on a timescale of a few days wa…
Galaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxies
O. Ivy Wong, K. Schawinski, S. Kaviraj +12
We present a study of local post-starburst galaxies (PSGs) using the photometric and spectroscopic observations from the Sloan Digital Sky Survey (SDSS) and the results from the Ga…
The 2010 very high energy gamma-ray flare & 10 years of multi-wavelength observations of M 87
The H. E. S. S. Collaboration, :, A. Abramowski +442
Abridged: The giant radio galaxy M 87 with its proximity, famous jet, and very massive black hole provides a unique opportunity to investigate the origin of very high energy (VHE;…
Galaxy Zoo: The Environmental Dependence of Bars and Bulges in Disc Galaxies
Ramin A. Skibba, Karen L. Masters, Robert C. Nichol +8
We present an analysis of the environmental dependence of bars and bulges in disc galaxies, using a volume-limited catalogue of 15810 galaxies at z<0.06 from the Sloan Digital Sky…
Galaxy Zoo: Bar Lengths in Nearby Disk Galaxies
Ben Hoyle, Karen. L. Masters, Robert C. Nichol +7
We present an analysis of bar length measurements of 3150 local galaxies in a volume limited sample of low redshift (z < 0.06) disk galaxies. Barred galaxies were initially selecte…
Spectroscopic Determination of the Low Redshift Type Ia Supernova Rate from the Sloan Digital Sky Survey
K. Simon Krughoff, Andrew Connolly, Joshua Frieman +3
Supernova rates are directly coupled to high mass stellar birth and evolution. As such, they are one of the few direct measures of the history of cosmic stellar evolution. In this…