Table 4
Nuclear X-ray absorbing column densities of extragalactic H2O kilomaser galaxies*. This table is an updated version of that presented by Zhang et al. (2006).
| Source | Typea | Telescopeb | Epochc | N H | References |
| (1023 cm-2) | |||||
|
|
|||||
| IC 10 | X-1 | C | 2003.03.12 |
|
Bauer & Brandt (2004) |
| NGC 253 | SBG | B | 1996.11.29 |
|
Cappi et al. (1999) |
| C | 1999.12.16 |
|
Weaver et al. (2002) | ||
| NGC 520 | X-12 | C | 2003.01.29 | 0.23 | Read (2005) |
| R | 2003.01.29 | 0.029 | Henriksen & Cousineau (1999) | ||
| M 33 | A | 1993.07 |
|
Takano et al. (1994) | |
| X-8 | X | 2000–2002 |
|
Foschini et al. (2004) | |
| NGC 1106 | – | – | – | – | – |
| IC 342 | A | 2000.02.24 |
|
Kubota et al. (2002) | |
| X-21 | X | 2001.02.11 |
|
Kong (2003) | |
| NGC 2146 | SBG | A | 1997.03.26 |
|
della Ceca et al. (1999) |
| NGC 2273 | S2, C | B | 1997.02.12 | >100 | Maiolino et al. (1998) |
| X | 2003.09.05 | ≥18 | Guainazzi et al. (2005) | ||
| He 2-10 | BCD | R | 1992.05.14 | 0.0084−0.047 | Méndez et al. (1999) |
| C | ... |
|
Ott et al. (2005) | ||
| M 82d | SBG | B | 1997.12.06 |
|
Cappi et al. (1999) |
| X | 2001.05.06 |
|
Stevens et al. (2003) | ||
| C | 2002 | 0.012 | Strickland et al. (2004) | ||
| NGC 3256 | X | 2001.12.15 | 0.015 | Jenkins et al. (2004) | |
| X-7 (N) | C | 2000.01.05 | 0.01 | Lira et al. (2002) | |
| X-8 (S) | C | 2000.01.05 | 0.5 | Lira et al. (2002) | |
| NGC 3359 | – | – | – | – | – |
| NGC 3556 | X-35 | C | 2001.09.08 |
|
Wang et al. (2003b) |
| NGC 3620 | – | – | – | – | – |
| Arp 299 (A; IC 694) | X-16 | C |
|
Zezas et al. (2003) | |
| Arp 299 (C’; overlap) | X-8 | C | ??? | Zezas et al. (2003) | |
| Antennae | X-25 (NGC 4038) | C | 1999.12.01 |
|
Zezas et al. (2002) |
| X-29 (NGC 4039) | C | 1999.12.01 | 0.014 | Zezas et al. (2002) | |
| NGC 4051 | S1/1.5 | A | 1993.04.25 |
|
George et al. (1998) |
| C | 2000.04.25 | ~0.01 | Collinge et al. (2001) | ||
| X | 2001.05.16 | ~3.6 | Pounds et al. (2004) | ||
| NGC 4151 | S1.5 | A | 1993.12.07 |
|
George et al. (1998) |
| A, B | 1999–2000 |
|
Schurch & Warwick (2002) | ||
| C | ... | 1.5 | Wang et al. (2010) | ||
| NGC 4214 | BCD | C | ... |
|
Ott et al. (2005) |
| NGC 4293 | LINER | R | ... | see Table 3 | HEASARC |
| NGC 4527 | – | – | – | – | – |
| M 51 | S2, C | A | 1993.05.11 |
|
Bassani et al. (1999), Terashima et al. (1998) |
| B | 2000.01.18 |
|
Fukazawa et al. (2001) | ||
| NGC 5253 | Dwarf SBG | C | ... |
|
Ott et al. (2005) |
| NGC 6300 | S2, C? | RX | 1997.02 | >100 | Leighly et al. (1999) |
| B | 1999.08 |
|
Guainazzi et al. (2002) | ||
| X | 2001.03.02 |
|
Matsumoto et al. (2004) | ||
Notes. ∗Chandra and XMM-Newton results are given whenever possible. For sources not observed by these satellites most recent (but usually older) results are quoted.
Type of nuclear activity. In the absence of a starburst and a prominent nuclear source, the X-ray source (e.g. X-1 or X-8) is given. BCD: Blue Compact Dwarf; SBG: StarBurst Galaxy; S2: Seyfert 2; LINER: Low-Ionization Nuclear Emission Line Region; ULIRG: UltraLuminous InfraRed Galaxy; FRII: Fanarov-Riley type II galaxy; C: Compton-thick, i.e. NH ≳ 1024 cm-2; C?: possibly varying between Compton-thick and Compton-thin.
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