SUMMARY OF PROPOSAL 52127
HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS
60 GARDEN STREET, MS-42
CAMBRIDGE
MA USA 02138
Tel: 617-495-7294 Fax: 617-495-7345
Medium: 2GB8MM
Subject: AGN
THE X-RAY PROPERTIES OF LOW-LUMINOSITY SEYFERT 1 NUCLEI
ABSTRACT
We request ASCA observations of NGC 4639 and NGC 5033 as part of a multiwavelength study of low-luminosity Seyfert 1 nuclei. We already have VLA, HST, and ROSAT (HRI and PSPC) data for these objects, and NGC 5033 was previously observed in AO4. The existing data suggest that these objects are scaled-down versions of "classical" Seyfert 1 nuclei, but the true relationship between the two luminosity classes is not known. The ASCA data will be used to (1) study the short timescale variability, (2) investigate the X-ray continuum shape, including a possible soft excess, and (3) search for the iron fluorescence emission line. These properties will be compared with those in high-luminosity sources to study luminosity-dependent effects.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| ANDREW PTAK | UNIVERSITY MARYLAND | USA |
| YUICHI TERASHIMA | NAYOGA UNIVERSITY | JAPAN |
| HIDEYO KUNIEDA | NAYOGA UNIVERSITY | JAPAN |
| PETER SERLEMITSOS | NASA/GSFC | USA |
| TAHIR YAQOOB | NASA/GSFC | USA |
| ANURADHA KORATKAR | STSCI | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)NGC 4639 | 3 | 190.7179 | 13.2573 | 40 ks | N | Y | P | 0.01500 | 2 |
| 2)NGC 5033 | 3 | 198.3658 | 36.5944 | 40 ks | N | Y | P | 0.17400 | 1 |