Table 1.
Properties of dE01+09.
| Parameter | Value | Remark |
|---|---|---|
| RA (hh:mm:ss) | 01:17:17:54.85 | 19.478555 deg |
| Dec (dd:mm:ss) | 09:58:19.10 | +9.971973 deg |
| Dproj | 1.8 deg (1.1 Mpc) | from NGC 524 |
| vr | 2400 ± 15 km s−1 | reported by DESI |
| vr | 2371 ± 29 km s−1 | measured by us |
| Mr | −15.72 ± 0.01 mag | |
| g − r | 0.67 ± 0.02 mag | |
| M* | 2.8 × 108 M⊙ | |
| Re | 1.2 ± 0.2 kpc | Global |
| n | 1.1 ± 0.1 | Global |
| μe, g | 23.4 ± 0.2 mag arcsec−2 | Global |
| Age | 8.3 ± 1.4 Gyr | SSP |
| Z | −1.19 ± 0.21 dex | SSP |
Notes. The stellar mass was estimated from the r-band luminosity using a mass-to-light ratio calibrated from the g − r color, following the empirical relation of Zhang & Bell (2017). The structural parameters were derived from surface photometry performed on CFHT g-band images. The stellar population properties were obtained via full-spectrum fitting of the DESI optical spectrum, employing E-MILES SSP models.
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