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| Query : 2001MNRAS.322..218G |
2001MNRAS.322..218G - Mon. Not. R. Astron. Soc., 322, 218-230 (2001/April-1)
RXTE observations of Seyfert 2 galaxies: evidence for spectral variability.
GEORGANTOPOULOS I. and PAPADAKIS I.E.
Abstract (from CDS):
We present a series of RXTE observations of the nearby obscured Seyfert galaxies ESO103-G35, IC5063, NGC 4507 and NGC 7172. The period of monitoring ranges from seven days for NGC 7172 up to about seven months for ESO103-G035. The spectra of all galaxies fit well with a highly obscured (NH>1023cm–2) power-law and an Fe line at 6.4keV. We find strong evidence for the presence of a reflection component in ESO103-G35 and NGC 4507. The observed flux presents strong variability on day time-scales in all objects. Spectral variability is also detected in the sense that the spectrum steepens with increasing flux similar to the behaviour witnessed in some Seyfert 1 galaxies.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): galaxies: active - galaxies: individual: ESO 103-G35 - galaxies: individual: IC 5063 - galaxies: individual: NGC 4507 - galaxies: individual: NGC 7172 - X-rays: galaxies
Simbad objects: 11
| Number of rows : 11 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NGC 526 | Sy2 | 01 23 54.3772245792 | -35 03 55.710850788 | 14.76 | 14.60 | 13.46 | ~ | 354 | 2 | ||
| 2 | NGC 4051 | Sy1 | 12 03 09.6101337312 | +44 31 52.682601288 | 11.08 | 12.92 | 9.94 | ~ | 2270 | 1 | ||
| 3 | NGC 4151 | Sy1 | 12 10 32.5759813872 | +39 24 21.063527532 | 12.18 | 11.48 | ~ | 3938 | 2 | |||
| 4 | NGC 4253 | Sy1 | 12 18 26.5163572920 | +29 48 46.531535472 | 14.34 | 13.57 | ~ | 1106 | 1 | |||
| 5 | NGC 4507 | Sy2 | 12 35 36.6338976888 | -39 54 33.710416272 | 12.95 | 13.54 | 11.70 | 12.4 | ~ | 532 | 1 | |
| 6 | MCG-06-30-015 | Sy1 | 13 35 53.7691256160 | -34 17 44.160716796 | 13.89 | 13.61 | 8.9 | ~ | 1559 | 0 | ||
| 7 | ESO 103-35 | Sy2 | 18 38 20.3204821536 | -65 25 39.141804936 | 14.75 | 14.53 | 13.24 | ~ | 342 | 0 | ||
| 8 | IC 5063 | Bla | 20 52 02.15 | -57 04 06.7 | 12.92 | 13.60 | 11.30 | ~ | 710 | 1 | ||
| 9 | NGC 7172 | Sy2 | 22 02 01.897 | -31 52 11.60 | 12.72 | 13.61 | 11.15 | 25.10 | ~ | 572 | 2 | |
| 10 | NAME MR 2251-178 | Sy1 | 22 54 05.8858611984 | -17 34 55.402233708 | 14.99 | 14.36 | 15.12 | ~ | 467 | 4 | ||
| 11 | NGC 7582 | Sy2 | 23 18 23.60 | -42 22 13.3 | 11.62 | 10.92 | 10.62 | ~ | 978 | 3 |
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