SUMMARY OF SEQUENCE NUMBER 700178

SUMMARY OF SEQUENCE NUMBER 700178

Title: THE SOFT X-RAY EMISSION LINE SPECTRUM OF MARKARIAN 3

Observer: KAHN

Subject Category: Active Galaxies and Quasars

Seq: 700178 ObsId: 00873

Long-term Plan bin: 14-Mar-2000

ABSTRACT

X-ray spectra of Seyfert II galaxies exhibit discrete spectral features in the soft X-ray band. The line formation mechanisms are not well understood and detailed spectroscopy will provide a wealth of information about the structure of the circumnuclear regions. Mkn 3 is one of the brightest Seyfert II galaxies in soft X-rays and we propose an AXAF observation with the HETGS to obtain high resolution X-ray spectra of the emission-line regions in Mkn 3. Our primary goal is to determine the underlying line emission mechanisms and to constrain the ionization structure of the active nucleus.

TARGET SUMMARY

TARGET NAME RADEC TIME SI GRAT TYPE TC ROLL PRE PHASE MULTI PRI
MARKARIAN 3
93.900000
71.034583
100.0000
ACIS-S
HETG
GO
no
yes
no
no
no
5

IMAGES

(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)

Roll/Visibility

PARAMETERS

Obscat Parameters