230 citations · 1.6k across the 49 of their papers we have counts for
Showing 2009Show all
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astro-ph.CO2009★ 27 cited
Structural Parameters of the M87 Globular Clusters
Juan P. Madrid, William E. Harris, John P. Blakeslee +1
We derive structural parameters for ~2000 globular clusters in the giant Virgo elliptical M87 using extremely deep Hubble Space Telescope images in F606W (V) and F814W (I) taken wi…
astro-ph.CO2009★ 37 cited
Hubble Space Telescope observations of an extraordinary flare in the M87 jet
Juan P. Madrid
HST-1, a knot along the M87 jet located 0.85 arcsec from the nucleus of the galaxy has experienced dramatic and unexpected flaring activity since early 2000. We present analysis of…
astro-ph.IM2009★ 14 cited
High-Impact Astronomical Observatories
Juan P. Madrid, Duccio Macchetto
We derive the ranking of the astronomical observatories with the highest impact in astronomy based on the citation analysis of papers published in 2006. We also present a descripti…