174 citations · 562 across the 12 of their papers we have counts for
13 papers
Proper Motions of Jets on the Kiloparsec Scale: New Results with HST
Eileen T. Meyer, William B. Sparks, Markos Georganopoulos +7
The Hubble Space Telescope recently celebrated 25 years of operation. Some of the first images of extragalactic optical jets were taken by HST in the mid-1990s; with time baselines…
An HST Proper-Motion Study of the Large-scale Jet of 3C273
Eileen T. Meyer, William B. Sparks, Markos Georganopoulos +7
The radio galaxy 3C 273 hosts one of the nearest and best-studied powerful quasar jets. Having been imaged repeatedly by the Hubble Space Telescope (HST) over the past twenty years…
Optical Polarimetry of the Jets of Nearby Radio Galaxies: I. The Data
Eric S. Perlman, C. A. Padgett, Markos Georganopoulos +11
We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-r…
HST and UKIRT Observations of the Center of the Trifid Nebula: Evidence for the Photoevaporation of a Proplyd and a Protostellar Condensation
F. Yusef-Zadeh, J. Biretta, T. R. Geballe
The Trifid nebula (M20) is a well-known prominent optical HII region trisected by bands of obscuring dust lanes and excited by an O7.5 star HD 164492A. Previous near-IR, mid-IR and…
Proper Motion of the Irradiated Jet HH 399 in the Trifid Nebula
F. Yusef-Zadeh, J. Biretta, M. Wardle
HH 399 is one of the first Herbig Haro flows recognized to be irradiated by the UV radiation of the massive O7.5 star in the Trifid nebula. We present the proper motion of the firs…
Month-Timescale Optical Variability in the M87 Jet
Eric S. Perlman, D. E. Harris, John A. Biretta +2
A previously inconspicuous knot in the M87 jet has undergone a dramatic outburst and now exceeds the nucleus in optical and X-ray luminosity. Monitoring of M87 with the Hubble Spac…