One of my on-going research interests concerns the dust shells of proto-planetary nebulae or PPNs (also called pre-planetary nebulae, transition objects, and post-AGB objects in the literature; the latter term also applies to a wider selection of objects such as RV Tauri stars), especially the carbon-rich ones that show the unidentified "21 micron' emission feature. ... I am working to find a complete sample of proto-planetary nebulae in these satellite galaxies from the millions of detected stars. ...
ST-ECF Instrument Science Report ACS-2006-03 Wavelength and Flux calibration of the ACS/HRC PR200L prism S. S. Larsen, J. Walsh and M. KЭmmel, March 2006 ABSTRACT Wavelength- and flux calibrations are presented for the ACS/HRC PR200L slitless spectroscopy mode. ... Wavelength solutions for the PR200L prism. ... Wavelength. ... 12 ST-ECF Instrument Science Report ACS-2006-03 Figure 7: Comparison of the aXe-extracted prism spectra of the two flux standards with the reference spectra. ...
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... Some of these commands are L A T E X macros, while oth ers belong to plain T E X; no attempt to differen tiate them is made. ``/ --- ordinary space after period. ``! --- negative thin space = \Gamma 1 6 quad; xx``!x yields xxx (math mode). ``'' makes an umlaut, as Ёo. ``# prints a pound sign: #. ``$ prints a dollar sign: $. ``% prints a percent sign: %. ``& prints an ampersand: &. ``' in tabbing environment moves current column to the right of the previous column. ... math mode). ``phi is OE. ...