A Companion Galaxy to the Poststarburst Quasar UN J1025−0040
Open Access
- 1 January 2000
- journal article
- research article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 119 (1) , 59-62
- https://doi.org/10.1086/301190
Abstract
UN J1025-0040 is a quasar at z = 0.6344 that shows an extremely bright post starburst population of age ~400 Myr (Brotherton et al.). Images of UN J1025-0040 show a nearly stellar object 42 south-southwest of the quasar. We present imaging and spectroscopy that confirm that this object is a companion galaxy at redshift z = 0.6341. We estimate an age of ~800 Myr for the dominant stellar population in the companion. The companion appears to be interacting with the quasar host galaxy, and this interaction may have triggered both the starburst and the quasar activity in UN J1025-0040.Keywords
All Related Versions
This publication has 14 references indexed in Scilit:
- 3C 48: Stellar Populations and the Kinematics of Stars and Gas in the Host GalaxyThe Astrophysical Journal, 2000
- A Spectacular Poststarburst QuasarThe Astrophysical Journal, 1999
- The HAWAII Infrared Detector Arrays: testing and astronomical characterization of prototype and science-grade devicesNew Astronomy, 1996
- LUMINOUS INFRARED GALAXIESAnnual Review of Astronomy and Astrophysics, 1996
- Gasdynamics and Starbursts in Major MergersThe Astrophysical Journal, 1996
- The Keck Low-Resolution Imaging SpectrometerPublications of the Astronomical Society of the Pacific, 1995
- The Near Infrared Camera on the W.M. Keck TelescopePublished by Springer Nature ,1994
- UBVRI photometric standard stars in the magnitude range 11.5-16.0 around the celestial equatorThe Astronomical Journal, 1992
- Spectrophotometric standardsThe Astrophysical Journal, 1988
- Spectroscopy of the nebulosity around eight high-luminosity QSOsThe Astrophysical Journal, 1984