1 / 8

Tracing the Extent of Narrow Line Emission in Type II QSOs

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).

dasha
Download Presentation

Tracing the Extent of Narrow Line Emission in Type II QSOs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 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 J081125.8+073235.4 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)

  2. 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.

  3. 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.

  4. I also wrote up my longslit reduction recipe here: http://www.astro.ucla.edu/~kevinhainline/salt_redux.html (or http://goo.gl/t4MPM) 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.

  5. 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

  6. 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

  7. Rapid Supernova Identification and Follow-up With SALT • Questions: • Can method of triggering Target of Opportunity programs be improved? Currently need to email 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?

More Related