Extensive results from the commissioning phase of PUEO, the adaptive optics instrument adaptor for the Canada–France–Hawaii telescope (CFHT), are presented and discussed. Analyses of more than 750 images recorded with a CCD and a near-IR camera on 16 nights in wavelengths from B to H are used to derive the properties of the compensated wavefront and images… (More)
The radio galaxy Fornax A (NGC 1316) is a prominent merger remnant in the outskirts of the Fornax cluster. Its giant radio lobes suggest the presence of a powerful AGN, and thus a central supermassive black hole (SMBH). Fornax A now seems to be in a transition state between active black hole growth and quiescence, as indicated by the strongly declined… (More)
The near-infrared integral field spectrograph SINFONI at the ESO VLT opens a new window for the study of central supermassive black holes. With a near-IR spatial resolution similar to HST optical and the ability to penetrate dust it provides the possibility to explore the low-mass end of the M •-σ relation (σ < 120 km s −1) where so far very few black hole… (More)
This is the first of a series of papers dedicated to unveil the mass composition and dynamical structure of a sample of flattened early type galaxies in the Coma cluster. We describe our modifications to the Schwarzschild code of Richstone et al. (in preparation). Applying a Voronoi tessellation in the surface of section we are able to assign accurate… (More)
Dynamical models for 17 early-type galaxies in the Coma cluster are presented. The galaxy sample consists of flattened, rotating as well as non-rotating early-types including cD and S0 galaxies with luminosities between M B = −18.79 and M B = −22.56. Kinematical long-slit observations cover at least the major and minor axis and extend to 1 − 4 r eff.… (More)
Through the development of simultaneous spatial and temporal focusing, platforms that can ablate tissue with excellent axial precision, and perform high-speed multiphoton imaging are converging. Recent developments in these platforms are presented.
We demonstrate and characterize a highly linearly polarized (18.8 dB) narrow spectral emission (<80 pm) from an all-fiber Tm laser utilizing femtosecond-laser-written fiber Bragg gratings. Thermally-dependent anisotropic birefringence is observed in the FBG transmission, the effects of which enable both the generation and elimination of highly linearly… (More)
We present femtosecond induced volume Bragg gratings (VBGs) using a phase mask technique. For the first time we could realize reflecting VBGs in fused silica with a high period stability and periods down to 537.5nm.