Table A.1.
Properties of the Hα selected regions in the extended disk of Malin 1 as discussed in Sect. 2.2.2.
| Region | R.A | Dec. | Distance | Area | Hα | Hα/Hβ | 12 + log O/H | 12 + log O/H |
|---|---|---|---|---|---|---|---|---|
| (deg) | (deg) | (kpc) | (arcsec2) | [N2] | [O3N2] | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| 1 | 189.2470 | 14.3287 | 9.13 | 1.80 | 1.11 ± 0.04 | 2.95 ± 0.45 | 8.52 ± 0.02 | 8.43 ± 0.02 |
| 2 | 189.2474 | 14.3292 | 6.05 | 1.00 | 1.48 ± 0.05 | 2.60 ± 0.28 | 8.56 ± 0.02 | 8.44 ± 0.01 |
| 3 | 189.2478 | 14.3293 | 6.18 | 0.84 | 3.29 ± 0.11 | 3.65 ± 0.55 | 8.55 ± 0.02 | 8.39 ± 0.02 |
| 4 | 189.2473 | 14.3303 | 1.64 | 17.04 | 26.07 ± 0.15 | 3.23 ± 0.06 | 8.68 ± 0.00 | 8.50 ± 0.00 |
| 5 | 189.2459 | 14.3299 | 7.96 | 0.52 | 0.71 ± 0.06 | 2.02 ± 0.45 | 8.58 ± 0.04 | 8.47 ± 0.03 |
| 6 | 189.2455 | 14.3302 | 9.76 | 0.52 | 0.61 ± 0.05 | 2.35 ± 0.66 | 8.55 ± 0.05 | 8.46 ± 0.04 |
| 7 | 189.2449 | 14.3309 | 13.39 | 0.80 | 0.57 ± 0.05 | 2.52 ± 0.59 | 8.57 ± 0.04 | – |
| 8 | 189.2462 | 14.3311 | 7.63 | 1.12 | 1.69 ± 0.04 | 2.89 ± 0.25 | 8.53 ± 0.01 | 8.42 ± 0.01 |
| 9 | 189.2446 | 14.3312 | 15.40 | 0.64 | 0.46 ± 0.04 | 1.94 ± 0.46 | 8.53 ± 0.06 | – |
| 10 | 189.2495 | 14.3313 | 12.99 | 1.28 | 0.57 ± 0.03 | – | 8.43 ± 0.05 | – |
| 11 | 189.2465 | 14.3313 | 7.32 | 0.40 | 2.85 ± 0.14 | 3.69 ± 0.69 | 8.54 ± 0.03 | 8.40 ± 0.02 |
| 12 | 189.2478 | 14.3316 | 7.61 | 1.92 | 0.82 ± 0.04 | 2.11 ± 0.27 | 8.57 ± 0.03 | 8.55 ± 0.03 |
| 13 | 189.2483 | 14.3315 | 8.13 | 0.48 | 0.55 ± 0.05 | 1.83 ± 0.42 | 8.59 ± 0.04 | – |
| 14 | 189.2450 | 14.3316 | 14.48 | 0.76 | 0.81 ± 0.06 | 3.30 ± 1.07 | 8.45 ± 0.06 | – |
| 15 | 189.2493 | 14.3319 | 13.72 | 1.04 | 0.88 ± 0.04 | 2.76 ± 0.41 | 8.48 ± 0.03 | 8.42 ± 0.02 |
| 16 | 189.2504 | 14.3322 | 19.69 | 1.64 | 0.53 ± 0.03 | – | 8.41 ± 0.05 | – |
| 17 | 189.2489 | 14.3322 | 13.52 | 0.44 | 0.94 ± 0.06 | – | 8.49 ± 0.04 | – |
| 18 | 189.2451 | 14.3324 | 16.56 | 0.48 | 0.94 ± 0.06 | – | 8.52 ± 0.04 | – |
| 19 | 189.2501 | 14.3328 | 20.29 | 2.28 | 1.18 ± 0.04 | 3.43 ± 0.55 | 8.44 ± 0.03 | 8.39 ± 0.02 |
| 20 | 189.2452 | 14.3327 | 17.67 | 0.48 | 0.89 ± 0.05 | – | 8.39 ± 0.06 | – |
| 21 | 189.2456 | 14.3332 | 19.02 | 1.68 | 2.98 ± 0.15 | 5.69 ± 2.04 | 8.49 ± 0.03 | 8.36 ± 0.04 |
| 22 | 189.2493 | 14.3334 | 20.40 | 0.92 | 0.50 ± 0.03 | 2.78 ± 0.71 | 8.53 ± 0.04 | – |
| 23 | 189.2516 | 14.3338 | 30.08 | 5.48 | 1.68 ± 0.03 | 3.24 ± 0.20 | 8.45 ± 0.01 | 8.34 ± 0.01 |
| 24 | 189.2465 | 14.3337 | 19.68 | 2.64 | 0.78 ± 0.03 | 3.19 ± 0.55 | 8.40 ± 0.05 | 8.39 ± 0.03 |
| 25 | 189.2431 | 14.3348 | 33.79 | 0.36 | 1.09 ± 0.10 | 3.55 ± 1.39 | – | – |
| 26 | 189.2441 | 14.3356 | 35.05 | 6.12 | 0.76 ± 0.01 | 2.92 ± 0.21 | 8.46 ± 0.01 | 8.38 ± 0.01 |
| 28 | 189.2540 | 14.3364 | 49.75 | 7.24 | 1.41 ± 0.03 | 3.62 ± 0.33 | 8.47 ± 0.01 | 8.42 ± 0.01 |
| 29 | 189.2462 | 14.3363 | 34.08 | 1.68 | 1.00 ± 0.04 | 3.45 ± 0.63 | 8.41 ± 0.04 | 8.36 ± 0.03 |
| 30 | 189.2394 | 14.3363 | 54.77 | 0.44 | 3.78 ± 0.21 | 4.86 ± 1.43 | 8.32 ± 0.08 | 8.36 ± 0.06 |
| 31 | 189.2459 | 14.3365 | 35.27 | 0.40 | 0.62 ± 0.05 | 2.96 ± 0.99 | – | – |
| 32 | 189.2399 | 14.3368 | 54.99 | 7.12 | 4.93 ± 0.03 | 3.38 ± 0.07 | 8.43 ± 0.00 | 8.32 ± 0.00 |
| 33 | 189.2459 | 14.3368 | 37.40 | 1.08 | 0.76 ± 0.05 | 3.21 ± 0.74 | 8.53 ± 0.04 | 8.46 ± 0.04 |
| 34 | 189.2411 | 14.3371 | 51.01 | 2.84 | 6.66 ± 0.04 | 3.26 ± 0.07 | 8.39 ± 0.01 | 8.29 ± 0.00 |
| 35 | 189.2537 | 14.3371 | 51.31 | 1.96 | 3.84 ± 0.16 | 5.78 ± 1.66 | 8.42 ± 0.04 | 8.33 ± 0.04 |
| 36 | 189.2558 | 14.3375 | 60.95 | 1.68 | 0.49 ± 0.03 | 2.26 ± 0.35 | 8.36 ± 0.07 | 8.38 ± 0.04 |
| 37 | 189.2416 | 14.3374 | 50.76 | 1.44 | 7.35 ± 0.07 | 3.35 ± 0.10 | 8.37 ± 0.01 | 8.26 ± 0.00 |
| 38 | 189.2546 | 14.3375 | 56.21 | 0.52 | 1.56 ± 0.06 | 3.07 ± 0.47 | 8.39 ± 0.04 | 8.35 ± 0.03 |
| 39 | 189.2549 | 14.3375 | 57.57 | 0.48 | 14.82 ± 0.47 | 6.82 ± 1.64 | 8.44 ± 0.02 | 8.31 ± 0.03 |
| 40 | 189.2535 | 14.3376 | 52.92 | 1.28 | 0.65 ± 0.04 | 3.17 ± 0.79 | – | – |
| 41 | 189.2513 | 14.3377 | 46.75 | 1.32 | 0.57 ± 0.04 | 2.80 ± 0.77 | 8.44 ± 0.07 | 8.41 ± 0.05 |
| 42 | 189.2408 | 14.3379 | 55.51 | 2.32 | 1.09 ± 0.04 | 3.46 ± 0.48 | 8.34 ± 0.05 | 8.31 ± 0.03 |
| 43 | 189.2531 | 14.3379 | 52.63 | 1.76 | 3.42 ± 0.16 | 5.84 ± 1.99 | 8.45 ± 0.04 | – |
| 44 | 189.2417 | 14.3385 | 55.58 | 4.48 | 1.63 ± 0.02 | 3.03 ± 0.15 | 8.42 ± 0.01 | 8.37 ± 0.01 |
| 45 | 189.2370 | 14.3387 | 73.60 | 2.56 | 1.46 ± 0.04 | 3.34 ± 0.43 | 8.31 ± 0.05 | 8.26 ± 0.03 |
| 46 | 189.2410 | 14.3387 | 57.92 | 1.12 | 1.44 ± 0.04 | 2.87 ± 0.24 | 8.49 ± 0.02 | 8.46 ± 0.02 |
| 47 | 189.2415 | 14.3395 | 61.56 | 10.20 | 3.63 ± 0.02 | 3.14 ± 0.06 | 8.46 ± 0.00 | 8.34 ± 0.00 |
| 48 | 189.2421 | 14.3391 | 56.91 | 0.56 | 0.68 ± 0.05 | 2.15 ± 0.44 | 8.41 ± 0.07 | – |
| 50 | 189.2520 | 14.3397 | 58.63 | 1.44 | 1.66 ± 0.05 | 3.61 ± 0.51 | 8.38 ± 0.04 | 8.41 ± 0.03 |
| 51 | 189.2516 | 14.3400 | 58.87 | 0.56 | 1.13 ± 0.05 | 2.76 ± 0.38 | 8.42 ± 0.04 | 8.42 ± 0.03 |
| 52 | 189.2512 | 14.3401 | 58.70 | 0.64 | 1.10 ± 0.05 | 2.86 ± 0.41 | 8.41 ± 0.04 | 8.43 ± 0.03 |
| 53 | 189.2475 | 14.3404 | 57.36 | 5.92 | 0.66 ± 0.02 | 2.99 ± 0.36 | 8.43 ± 0.03 | 8.43 ± 0.02 |
| 54 | 189.2500 | 14.3404 | 58.69 | 3.44 | 1.11 ± 0.04 | 3.48 ± 0.48 | 8.37 ± 0.04 | 8.29 ± 0.02 |
| 55 | 189.2492 | 14.3404 | 57.53 | 3.64 | 1.51 ± 0.04 | 3.99 ± 0.59 | 8.39 ± 0.03 | 8.33 ± 0.02 |
| 56 | 189.2506 | 14.3404 | 58.98 | 0.48 | 0.57 ± 0.05 | 2.09 ± 0.50 | – | – |
| 57 | 189.2439 | 14.3406 | 60.95 | 2.68 | 1.15 ± 0.04 | 3.47 ± 0.49 | 8.48 ± 0.02 | 8.37 ± 0.02 |
| 58 | 189.2522 | 14.3408 | 64.35 | 0.64 | 0.54 ± 0.04 | – | 8.40 ± 0.07 | – |
| 59 | 189.2504 | 14.3409 | 61.72 | 1.48 | 0.83 ± 0.04 | 3.41 ± 0.68 | 8.32 ± 0.07 | 8.21 ± 0.04 |
| 60 | 189.2399 | 14.3415 | 74.44 | 0.48 | 0.45 ± 0.05 | – | – | – |
| 61 | 189.2431 | 14.3426 | 72.14 | 0.52 | 0.64 ± 0.04 | 1.72 ± 0.27 | 8.48 ± 0.05 | 8.42 ± 0.03 |
| 62 | 189.2444 | 14.3488 | 104.76 | 0.72 | 0.52 ± 0.05 | – | – | – |
Notes. (1) ID of the region as shown in Fig. 3. Region 4, marked as bold, corresponds to the central region of Malin 1. Note that the regions with ID 27 and 49 are excluded from this work as they do not have an S/N > 2.5 in any of the emission lines (see Sect. 2.2.2); (2-3) Sky coordinates of the region; (4) Distance of the region from the center of Malin 1; (5) Area of the region; (6) Hα surface brightness of the region in units of 10−17 erg s−1 cm−2 arcsec−2. The Hα flux given here is corrected for Galactic extinction, underlying stellar absorption, and dust attenuation as discussed in Sect. 3; (7) Mean Balmer ratio of the region; (8-9) Mean oxygen abundance of the region estimated using the Marino et al. (2013) N2 and O3N2 calibrators, respectively.
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