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Tracing the Extent of Narrow Line Emission in Type II QSOs
Kevin Hainline & Ryan Hickox Using SALT RSS longslit spectra of nearby Type II QSOs, we can measure the extent of the narrow-line region, and compare to the size of the galaxy stellar continuum. Greene et al. (2011) SDSS J z = 0.35 [OIII] 5007 To estimate the spatial extent of our features, we deconvolve our observed lines with the seeing, and use a width that represents 10% of the maximum surface brightness. 2.0” Surface Brightness At z = 0.35, 2” corresponds to 9.9 kpc. (log R/pc = 3.99) Spatial Position (pixel)
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SDSS J084107.1+033441.3 Type II QSO z = 0.27 Top of slit 20”
Galaxy rotation as measured through [OIII] 5007 narrow-line emission.
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SDSS J122217.9-00743.8 Type II QSO z = 0.17 Top of slit 20”
A dual AGN, with [OIII] tracing the movement of both galaxies.
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I also wrote up my longslit reduction recipe here:
(or The site describes basic longslit reduction in a similar manner to what is described on the SALT wiki. Overall, while it would be good if there was some way of obtaining absolute flux calibration, there is a variety of science that we have been doing without an estimate of the absolute fluxes. Finally, I think SALT data could use extra information in the image headers, such as a calculation of the airmass and sidereal time for the observation.
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Rapid Supernova Identification and Follow-up With SALT
A Target of Opportunity (ToO) campaign to classify nearby supernova candidates soon after they are discovered. Supernovae of interest may be monitored with additional follow-up spectra. The program is straightforward with rapid turn-around between initial observations and published identifications. PI: Robert Fesen CoI: Dan Milisavljevic CoI: Tim Pickering Paper submitted Paper forthcoming Papers forthcoming (DIBs changing!) Paper forthcoming
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This is paper one of many on the way.
Superbroad Halpha at -14d, which disappears and then you change classification! This is paper one of many on the way. We are very grateful for help from: T. Pickering, S. Crawford, A. Kniazev, P. Kotze, Encarni Romero-Colmenero, Petri Vaisanen, Christian Hettlage, & A. Gulbis
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Rapid Supernova Identification and Follow-up With SALT
Questions: Can method of triggering Target of Opportunity programs be improved? Currently need to on case-by-case basis to request to unlock proposal and this isn’t always convenient. Is there a way to rapidly access via web how many hours are left in a TOO program? Do leftover TOO hours from one semester carry over into the next? What is the official procedure when two TOO programs trigger on the same object?
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