Table 1.
Overview of some general properties of IC 1553.
| Stellar mass (1): | 13.40 × 109 M⊙ |
| Gas disk mass (2): | 2.96 × 109 M⊙ |
| Distance (3): | 36.5 Mpc |
| Absolute g-band brightness (4): | −18.90 mag |
| Maximum rotational velocity (5): | 128 km s−1–142 km s−1 |
| Metallicity (6) (12 + log(O/H)): | 8.47 − 8.48 dex |
Notes. The maximum rotational velocity and metallicity give ranges of singular measurements and are not meant as statistically significant intervals.
Sum of bulge-, thin, and thick disk masses reported by Comerón et al. (2018).
From the Dark Energy Survey (The Dark Energy Survey Collaboration 2005; Abbott et al. 2018, 2021), assuming a distance of 36.5 Mpc.
128 km s−1 from H I data (Courtois et al. 2009) and 142 km s−1 from optical nebular emission lines (Comerón et al. 2019). Our fit to the optical emission lines yields a value of 134 km s−1 (see Appendix C).
Estimated from two H II regions in the northern disk (marked with red circles in the second panel of Fig. 3) with the S23 diagnostic (Eq. (10)), as outlined by Kewley & Dopita (2002).
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