822 citations
- Space Telescope Science InstituteUS108 papers
- Gemini North ObservatoryUS83 papers
- European Southern ObservatoryCL77 papers
- Centre National de la Recherche ScientifiqueFR76 papers
- University of ArizonaUS72 papers
- California Institute of TechnologyUS60 papers
- Herzberg Institute of AstrophysicsCA51 papers
- University of California, BerkeleyUS51 papers
- Johns Hopkins UniversityUS50 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS49 papers
- Instituto de Astrofísica de CanariasES45 papers
- Ames Research CenterUS43 papers
Showing 2012 · astro-ph.COShow all
2 papers · 2 filters
astro-ph.CO2012★ 61 cited
A sample of Seyfert-2 galaxies with ultra-luminous galaxy-wide NLRs -- Quasar light echos?
Mischa Schirmer, Ruben Diaz, Karianne Holhjem +2
We report the discovery of Seyfert-2 galaxies in SDSS-DR8 with galaxy-wide, ultra-luminous narrow-line regions (NLRs) at redshifts z=0.2-0.6. With a space density of 4.4 per cubic…
astro-ph.CO2012★ 26 cited
Short timescale variations of the Hα double-peaked profile of the nucleus of NGC 1097
Jaderson S. Schimoia, Thaisa Storchi-Bergmann, Rodrigo S. Nemmen +2
The broad (FWHM ~ 10,000 km/s) double-peaked Hα profile from the LINER/Seyfert 1 nucleus of NGC 1097 was discovered in 1991, and monitored for the following 11 years. The profile s…