scholarly journals Keck laser guide star observations of 11 GOODS-South Chandra sources at z ~ 1

2007 ◽  
Vol 3 (S245) ◽  
pp. 463-464
Author(s):  
S. Mark Ammons ◽  
Jason Melbourne ◽  
David C. Koo ◽  
Claire E. Max

AbstractThe Center for Adaptive Optics (CfAO) Treasury Survey (CATS) has observed 11 Chandra sources (10 AGN) at z ~ 1 in the GOODS-South field with the laser guide star adaptive optics (LGSAO) system at Keck Observatory. We combine this K band imaging with ACS imaging in the B, V, I, and z bands to obtain multi-color imaging at a spatial resolution better than 100 mas in all bands. We attempt to remove central optical point sources from AGN using the GALFIT (Peng et al. 2002) routine. We fit Bruzual & Charlot (2003) tau-models to the residuals and find young, dusty stellar populations in the central 1-2 kpc (the mean central optical depth at rest-frame 500 nm is 4-5).

2001 ◽  
Vol 205 ◽  
pp. 453-454
Author(s):  
T. Ott ◽  
R. Davies ◽  
S. Rabien

All 8-metre class telescopes will be equipped with adaptive optics systems in order to reach their highest angular resolutions. With the additional requirement for maximal sky coverage comes the mandatory use of a laser guide star. ALFA is an adaptive optics system using a sodium laser guide star, which is installed on the 3.5-m telescope at Calar Alto observatory. It has shown that it is possible to reach Strehl ratios better than 20% in the K-band. In this contribution we describe the design of the system, the observational trade-off necessary to use a laser guide star, and the performance that might be expected.


2007 ◽  
Vol 15 (8) ◽  
pp. 4711 ◽  
Author(s):  
Richard M. Clare ◽  
Marcos A. van Dam ◽  
Antonin H. Bouchez

2003 ◽  
Vol 400 (3) ◽  
pp. 1199-1207 ◽  
Author(s):  
R. C. Flicker ◽  
F. J. Rigaut ◽  
B. L. Ellerbroek

1998 ◽  
Author(s):  
Claire E. Max ◽  
Bruce A. Macintosh ◽  
Scot S. Olivier ◽  
Donald T. Gavel ◽  
Herbert W. Friedman

2017 ◽  
Vol 54 (3) ◽  
pp. 621-639 ◽  
Author(s):  
Weston A. Marlow ◽  
Ashley K. Carlton ◽  
Hyosang Yoon ◽  
James R. Clark ◽  
Christian A. Haughwout ◽  
...  

2008 ◽  
Vol 675 (2) ◽  
pp. 1278-1292 ◽  
Author(s):  
A. Stolte ◽  
A. M. Ghez ◽  
M. Morris ◽  
J. R. Lu ◽  
W. Brandner ◽  
...  

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