Table 2.
Parameters obtained from stellar population fits (see Sect. 3.1.2).
| Galaxy | a1 | a2 | abr | b | c | ||
|---|---|---|---|---|---|---|---|
| Component | Sérsic | Sérsic | Exp. disc | Sérsic | Exp. disc | Sérsic | Exp. disc |
| RA (J2000), 15h58m50s + | 0.45s | 0.34s | 0.39s | 0.33s | 0.22s | 0.65s | 0.74s |
| Dec (J2000), 27°23′20″ + | 4.6″ | 2.6″ | 3.3″ | 8.0″ | 9.0″ | 9.3″ | 10.7″ |
| Offset, arcsec | – | – | – | 1.74 ± 0.02 | 1.75 ± 0.02 | ||
| PAphot | (29.9 ± 0.3)° | ( − 25 ± 1)° | (40.7 ± 0.4)° | (12 ± 8)° | (64 ± 4)° | ( − 14 ± 4)° | ( − 32 ± 1)° |
| Reff, arcsec | 3.56 ± 0.08 | 3.89 ± 0.92 | 0.80 ± 0.01 | 0.64 ± 0.01 | 3.0 ± 0.03 | 0.61 ± 0.01 | 2.37 ± 0.04 |
| b/a | 0.597 ± 0.002 | 0.622 ± 0.007 | 0.61 ± 0.01 | 0.967 ± 0.005 | 0.823 ± 0.008 | 0.878 ± 0.008 | 0.496 ± 0.008 |
| mr, comp | 16.11 ± 0.02 | 17.36 ± 0.10 | 17.52 ± 0.01 | 17.99 ± 0.01 | 18.01 ± 0.02 | 18.99 ± 0.01 | 18.94 ± 0.01 |
| mr, total | 16.11 ± 0.02 | 17.36 ± 0.10 | 17.52 ± 0.01 | 17.25 ± 0.02 | 18.2 ± 0.02 | ||
| Age, Gyr | 1.46 ± 0.03 | 0.38 ± 0.07 | – | 2.3 ± 0.3 | 2.4 ± 0.2 | ||
| [Fe/H], dex | −1.21 ± 0.06 | −0.7 ± 0.4 | – | −0.1 ± 0.1 | −0.2 ± 0.2 | ||
| (M/L), (M⊙/L⊙) | 0.43 ± 0.01 | 0.27 ± 0.04 | – | 0.87 ± 0.14 | 0.88 ± 0.12 | ||
| M★, 109 M⊙ | 20.7 ± 0.6 | 4.0 ± 0.7 | – | 14.6 ± 2.3 | 6.1 ± 0.9 | ||
Notes. First part of the table contains parameters from photometric analysis: Right Ascension (RA) and Declination (Dec) were calculated from the centre positions of ‘cores’ in the GALFIT analysis in the CFHT MegaPipe r image; PA, Reff, and b/a are the position angle, effective radius and axis ratio of the extended component, and mr, total is the total magnitude of the galaxy. Second part of the table shows parameters of stellar populations of galaxies: age and metallicity [Fe/H] were obtained from a two-component NBURSTS analysis (the properties of a1 were taken from the fit including galaxy b, the values consistent with those obtained from fits with other galaxies), the mass-to-light (M/L) ratio was calculated based on these stellar population parameters in the r filter, and M★ is the stellar mass of the components, which was calculated from luminosity and the mass-to-light ratio in the r band.
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