2.3k citations
- Columbia UniversityUS5 papers
- National Institute for AstrophysicsIT4 papers
- Space Telescope Science InstituteUS4 papers
- Yale UniversityUS4 papers
- Brera Astronomical ObservatoryIT3 papers
- California Institute of TechnologyUS3 papers
- DePaul UniversityUS3 papers
- Goddard Space Flight CenterUS3 papers
- Lawrence Livermore National LaboratoryUS3 papers
- The University of Texas at AustinUS3 papers
- University of California, BerkeleyUS3 papers
- University of California, Santa CruzUS3 papers
Showing 2012 · astro-ph.COShow all
2 papers · 2 filters
astro-ph.CO2012★ 21 cited
Accretion Disk Temperatures of QSOs: Constraints from the Emission Lines
E. W. Bonning, G. A. Shields, A. C. Stevens +1
QSO emission-line spectra are compared to predictions based on theoretical ionizing continua of accretion disks. Observed line intensities do not show the expected trend of higher…
astro-ph.CO2012★ 46 cited
Precision Measurement of The Most Distant Spectroscopically Confirmed Supernova Ia with the Hubble Space Telescope
D. Rubin, R. A. Knop, E. Rykoff +25
We report the discovery of a redshift 1.71 supernova in the GOODS North field. The Hubble Space Telescope (HST) ACS spectrum has almost negligible contamination from the host or ne…