4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
The Proceedings of SAIP2016 published on 24 December 2017
Home > Timetable > Session details > Contribution details
PDF | XML | iCal

Analysis of the rich optical iron-line spectrum of the x-ray variable I Zw 1 AGN 1H0707-495

Presented by Prof. Hartmut WINKLER on 6 Jul 2016 from 16:10 to 18:00
Type: Poster Presentation
Track: Track D1 - Astrophysics
Board #: D1.015

Abstract

Thirty years ago the optical counterpart of the x-ray source 1H0707-495 was discovered to be a 15th magnitude broad-line Seyfert galaxy with a rich FeII emission line spectrum typical of the AGN subclass sometimes referred to as the I Zw 1 objects after their progenitor. This object became the subject of much interest and investigation just over five years ago when it was shown to have undergone dramatic x-ray luminosity variations. This paper presents an extensive series of medium resolution spectra recorded at the 1.9 m telescope at Sutherland in January 2016. Through co-adding the spectra, we are able to achieve a signal-to-noise hitherto not achieved for this object, allowing us to resolve individual FeII lines and measure their relative strengths and profiles to a degree of accuracy not previously available for this AGN. We provide possible physical interpretations of our measurements and investigate links between the spectral evidence collected in this study and the known x-ray behaviour.

Award

No

Level

N/A

Paper

Yes

Permission

Yes

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room:


Primary authors

More

Co-authors

More