... in M31 and M33 06671 Deep V, I Photometry for 20 M31 Globular Clusters 06833 A Cepheid Search in the VirgoCluster Galaxy NGC 4571 06967 Blue Continuum Snapshots of 3CR Radio - Continued Galaxies 07272 Helium Absorption by Protogalactic Gas 07274 Secular ...
... The present program will use the IR channel of Wide-Field Camera 3 (F110W and F160W filters) to observe seventeen galaxies in the Fornax and Virgoclusters to provide a reliable calibration of this technique. ...
... between Feedback and Galaxy Evolu tion 10530 Probing Evolution And Reionization Spectroscopically (PEARS) 10543 Microlensing in M87 and the VirgoCluster 10548 Near-UV Snapshot Survey of Low Luminosity AGNs 10552 The distance of the Orion Nebula Cluster ...
... As a result, the distance to the Virgocluster core remains uncertain by as much as 20 determination is directly affected by a lingering 0.1 mag {5 uncertainty in the photometric calibration of the WFPC2. ...
... between Feedback and Galaxy Evolu tion 10530 Probing Evolution And Reionization Spectroscopically (PEARS) 10543 Microlensing in M87 and the VirgoCluster 10548 Near-UV Snapshot Survey of Low Luminosity AGNs 10552 The distance of the Orion Nebula Cluster ...
... FOS/RD 5695 (Black Holes and Nuclear Dynamics in a Completed Sample of Virgo Ellipticals) The Faint Object Spectrograph (Red Side) was used to make observations of the nuclear region of elliptical galaxy NGC-4570 which is located in the VirgoCluster ...