Table 1.
Basic properties of NGC 891 and 4565.
| NGC 891 | Ref. | NGC 4565 | Ref. | |
|---|---|---|---|---|
| RA (J2000) | 02h22m33 41 |
(1) | 12h36m20 78 |
(1) |
| Dec (J2000) | +42°20′56 9 |
(1) | +25°59′15 6 |
(1) |
| D [Mpc] | 9.1 | (2) | 11.9 | (2) |
| Morph. type | SBb | (3) | SB(r)b | (4) |
| Inclination [°] | 89.8 | (5) | 86.3 | (6) |
| Position angle [°] | 23.25 | (5) | 44.5 | (6) |
| d25 [′] (a) | 12.2 | (1) | 16.2 | (1) |
| SFR [M⊙ yr−1] | 3.3/1.55 | (7)/(8) | 1.3 / 0.74 | (7)/(8) |
| ΣSFR [10−3 M⊙ yr−1 kpc−2] | 3.13 | (8) | 0.73 | (8) |
| Vrot [km s−1] | 225 | (9) | 245 | (10) |
| Total atomic gas mass (b) [109 M⊙] | 5.6 | (11) | 9.9 | (12) |
Notes.
References. (1) Irwin et al. (2012), (2) Radburn-Smith et al. (2011), (3) Garcia-Burillo & Guelin (1995), (4) Kormendy & Barentine (2010), (5) Kregel & van der Kruit (2005), (6) this work, (7) Krause (2012), (8) Wiegert et al. (2015), (9) Swaters et al. (1997), (10) Heald et al. (2011), (11) Oosterloo et al. (2007), (12) Zschaechner et al. (2012).
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