Spectrophotometry of Supernovae

Radio Supernovae Radio Supernovae

In this article I will briefly review the current status of radio observations of nearby supernovae and their remnants. This review will initially address observations of the radio light curves of nearby core-collapse supernovae, followed by a more detailed summary of recent Very Long Baseline Interferometric observations of the expansion of nearby supernovae and their remnants. These later sec...

Fluorescence Spectrophotometry

Fluorescence and phosphorescence are photon emission processes that occur during molecular relaxation from electronic excited states. These photonic processes involve transitions between electronic and vibrational states of polyatomic fluorescent molecules (fluorophores). The Jablonski diagram (Figure 1) offers a convenient representation of the excited state structure and the relevant transiti...

Spectrophotometry and Imaging of AGNs

We present low resolution spectrophotometric and imaging ISO observations of a sample of 58 AGN's over the 2.5-11.6 Jl range. The data strongly support unification schemes and set new constraints on models of the molecular torus.

Low-temperature spectrophotometry

Photoreactions of the fourth rhodopsin-like pigment, phoborhodopsin (pR480), of Hulobacrerium halobium were studied by low-temperature spectrophotometry. Upon irradiation of pR480 at -80 as well as 170°C with 436 nm light, a new intermediate having a difference absorption maximum at about 520 nm was produced. We designate this intermediate ‘P520’. Prolonged irradiation caused the formation of a...

Basic UV/Visible Spectrophotometry