2022ApJ...932...29L

Query : 2022ApJ...932...29L

2022ApJ...932...29L - Astrophys. J., 932, 29-29 (2022/June-2)

A Spectroscopic Study of Blue Supergiant Stars in Local Group Spiral Galaxies: Andromeda and Triangulum.

LIU C., KUDRITZKI R.-P., ZHAO G., URBANEJA M.A., HUANG Y., ZHANG H. and ZHAO J.

Abstract (from CDS):

Low-resolution LAMOST and Keck spectra of blue supergiant stars distributed over the disks of the Local Group spiral galaxies M31 and M33 are analyzed to determine stellar effective temperatures, gravities, metallicities, and reddening. Logarithmic metallicities at the center of the galaxies (in solar units) of 0.30 ± 0.09 and 0.11 ± 0.04 and metallicity gradients of -0.37 ± 0.13 dex/R25 and -0.36 ± 0.16 dex/R25 are measured for M31 and M33, respectively. For M33 the 2D distribution of metallicity indicates a deviation from azimuthal symmetry with an off-center peak. The flux-weighted gravity-luminosity relationship (FGLR) of blue supergiant stars is used to determine a distance modulus of 24.51 ± 0.13 mag for M31 and 24.93 ± 0.07 mag for M33. For M31 the FGLR distance agrees well with other methods. For M33 the FGLR-based distance is larger than the distances from Cepheids studies, but it is in good agreement with work on eclipsing binaries, planetary nebulae, long-period variables, and the tip of the red giant branch.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Early-type supergiant stars - Galaxy abundances

CDS comments: Table 1: IFM-B 1131 is a misprint for IFM-B 1113.

Simbad objects: 80

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Number of rows : 80
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
3 2MASS J00372064+4016376 sg* 00 37 20.6400062208 +40 16 37.706986056   16.085 15.854     ~ 5 0
4 LAMOST J003728.99+402007.8 s*b 00 37 28.9892700624 +40 20 07.679177736 16.692 17.417 17.310 17.250 17.199 B1I 3 0
5 LAMOST J004005.02+403242.2 sg* 00 40 05.0200 +40 32 42.200   17.956 17.901     ~ 1 0
6 LAMOST J004021.21+403117.1 s*y 00 40 21.2005181208 +40 31 16.942124676 16.9 16.93 16.65 16.5 16.3 F0I 4 0
7 LAMOST J004033.90+403047.1 s*b 00 40 33.8836000896 +40 30 46.983412512 17.175 17.858 17.747 17.636 17.519 BI 4 0
8 LAMOST J004036.92+410119.0 sg* 00 40 36.9167464560 +41 01 18.883737120   18.13 18.14   17.77 ~ 2 0
9 LGGS J004051.59+403303.0 s*b 00 40 51.5742503712 +40 33 02.849588100 16.444 17.205 16.989 16.769 16.576 LBV 15 0
10 LAMOST J004126.23+405214.3 sg* 00 41 26.2300 +40 52 14.300   17.793 17.485     ~ 1 0
11 LAMOST J004133.62+404208.4 sg* 00 41 33.6200 +40 42 08.400   17.862 17.841     ~ 1 0
12 LAMOST J004154.82+405706.7 sg* 00 41 54.8116738711 +40 57 06.582485431   18.078 17.910     ~ 3 0
13 LAMOST J004202.86+411434.6 sg* 00 42 02.8600 +41 14 34.600   18.344 18.088     ~ 1 0
14 LAMOST J004212.27+413527.4 s*b 00 42 12.2641205448 +41 35 27.308120568 17.111 17.766 17.541 17.380 17.207 B2-5I 4 0
15 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
16 LAMOST J004253.42+412700.5 s*b 00 42 53.3957135400 +41 27 00.400446936 16.39 16.86 17.33 17.28 17.20 B5Ie 4 0
17 UCAC4 661-003260 s*b 00 44 22.8299477256 +42 04 32.992765788 15.480 16.347 16.257 16.245 16.155 B0.5I 15 0
18 MAC 2-203 sg* 00 45 10.0452036192 +41 36 57.347103816   16.596 16.336     A3Ia-0e 7 0
19 LAMOST J004535.26+413238.6 sg* 00 45 35.2600 +41 32 38.600   17.388 16.788     ~ 1 0
20 2MASS J00462314+4138471 sg* 00 46 23.1437866800 +41 38 47.212875096 15.538 16.277 16.140 16.012   A0I 5 0
21 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
22 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
23 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
24 LGGS J013241.52+302408.6 * 01 32 41.4789465936 +30 24 08.265705948   16.28 15.55     ~ 2 0
25 LAMOST J013242.51+302455.3 * 01 32 42.5100 +30 24 55.300   15.664 15.406     ~ 2 0
26 [HS53] M 33 Var A 11 V* 01 32 51.0916097976 +30 25 40.536756552 16.430 16.409 15.859 15.526   ~ 7 0
27 [HS80] 117A sg* 01 33 00.1866085080 +30 23 23.471056572 15.964 16.582 16.440 16.373 16.301 A0I 13 0
28 LGGS J013307.46+301210.1 * 01 33 07.4356133928 +30 12 09.792098784   16.93 16.17     ~ 2 0
29 LAMOST J013322.43+303513.2 * 01 33 22.4002664698 +30 35 13.016745596   18.299 18.363     ~ 2 0
30 2MASS J01332352+3022218 * 01 33 23.5266798384 +30 22 21.648878616   17.23 16.63     ~ 3 0
31 2MASS J01332412+3005205 * 01 33 24.1260759984 +30 05 20.595002244   17.46 16.85     ~ 3 0
32 LAMOST J013334.98+303852.4 * 01 33 34.9800 +30 38 52.400   17.952 18.076     ~ 2 0
33 [HS53] C s*b 01 33 35.1032018424 +30 36 00.286017732 15.543 16.531 16.429 16.297 16.137 LBV 69 0
34 IFM-B 615 * 01 33 35.4500 +30 30 10.100   18.552 18.628     ~ 2 0
35 IFM-B 620 EB* 01 33 35.5466870863 +30 29 40.619129075   18.486 18.444     B1I 4 0
36 [HS80] B182 sg* 01 33 37.0559278800 +30 35 21.395480784 17.7 18.00 17.94 17.9 17.8 A2 8 0
37 IFM-B 665 * 01 33 38.0000 +30 33 05.600   18.49 18.538     ~ 2 0
38 2MASS J01333964+3031086 s*b 01 33 39.627 +30 31 09.05 18.136 18.296 18.991 18.994 18.086 B5I 16 1
39 IFM-B 738 Mi* 01 33 39.8842654896 +30 37 29.205532236   18.778 18.863   20.12 ~ 4 0
40 LAMOST J013340.09+302846.1 * 01 33 40.0900 +30 28 46.100   16.165 16.047     ~ 5 0
41 [HS80] B207 * 01 33 40.3346580216 +30 43 58.002344724   17.606 17.697     ~ 6 0
42 LAMOST J013340.47+303503.3 s*b 01 33 40.4386563904 +30 35 03.101093416   18.022 17.997     B9I 3 0
43 IFM-B 767 s*b 01 33 40.5021211765 +30 31 58.595626820 17.212 18.008 18.047 18.043 18.011 B3I 8 0
44 IFM-B 770 * 01 33 40.6900 +30 40 59.800   18.227 18.264     ~ 2 0
45 LAMOST J013340.84+303822.5 sg* 01 33 40.8038580080 +30 38 22.491954452   18.407 18.235     A2I 3 0
46 LAMOST J013341.36+303629.6 sg* 01 33 41.3259814011 +30 36 29.392169440   18.019 17.913     A2I 2 0
47 IFM-B 814 * 01 33 42.4600 +30 42 11.100   18.788 18.735     ~ 2 0
48 [HS80] B241 sg* 01 33 43.2114426899 +30 31 53.618556816   17.267 17.221     A0I 5 0
49 LAMOST J013344.27+304247.2 s*b 01 33 44.2335150259 +30 42 47.097721336   18.22 18.209     B3I 4 0
50 [MC83] 45 WR* 01 33 44.3906340072 +30 38 43.871534232 17.541 17.467 21.040 18.065 17.789 WC4 16 0
51 IFM-B 880 * 01 33 44.5000 +30 40 45.900   18.764 18.823     ~ 2 0
52 [HS80] B215 a sg* 01 33 44.6258259338 +30 36 31.455406536   16.935 16.904     A0I 2 0
53 [HS80] B245 s*b 01 33 44.7681881983 +30 32 17.582887256   18.04 17.94     B8I 9 0
54 LGGS J013346.16+303448.5 * 01 33 46.1228012304 +30 34 48.296154072 17.3 17.27 17.08 17.0 16.8 ~ 5 0
55 IFM-B 963 * 01 33 47.5500 +30 43 47.000   18.553 18.641     ~ 2 0
56 [HS53] B s*b 01 33 49.1985770352 +30 38 09.097655172 15.330 16.243 16.208 16.026 15.947 LBV 57 0
57 IFM-B 1026 s*b 01 33 50.159 +30 41 25.99 15.759 16.854 16.819 16.434 16.304 LBV: 16 0
58 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
59 LAMOST J013351.20+303224.5 Ce* 01 33 51.1618064161 +30 32 24.327522156   21.75 21.16     B9I 5 0
60 [MBH96] 222 s*b 01 33 51.5214900409 +30 40 05.136826920 16.462 17.141 17.102 17.059 16.938 B9I 6 0
61 IFM-B 1113 * 01 33 52.1600 +30 33 33.500   18.054 17.959     ~ 3 0
62 LGGS J013355.21+303429.9 s*b 01 33 55.253 +30 34 29.25 16.720 17.563 17.572 17.530 17.448 B5Ia 5 0
63 [HS80] B472 Pu* 01 33 56.5939257664 +30 33 16.218186903   17.04 17.05     ~ 8 0
64 2MASS J01335686+3009004 * 01 33 56.8744682832 +30 09 00.388577700   18.34 17.79     ~ 2 0
65 CBF 100 GlC 01 33 59.7091291824 +30 41 24.287776872 16.763 17.551 17.362 17.338 17.379 B2I 16 0
66 2MASS J01340299+3044104 V* 01 34 02.9855115960 +30 44 10.530812760   15.582 15.47 17.7   ~ 4 1
67 LAMOST J013406.71+303631.2 V* 01 34 06.7100 +30 36 31.200   18.23 18.18     ~ 3 0
68 LGGS J013415.42+302816.4 s*y 01 34 15.3917293848 +30 28 16.208561208 18.4 18.13 17.28 16.8 16.2 F0-F2Ia 12 0
69 LAMOST J013419.24+303607.3 * 01 34 19.2400 +30 36 07.300   18.926 18.722     ~ 1 0
70 LGGS J013419.51+305532.4 sg* 01 34 19.4823559656 +30 55 32.434669668 17.2 17.16 16.91 16.8 16.4 A8-F0I 5 0
71 LAMOST J013432.80+303942.6 * 01 34 32.7817955832 +30 39 42.562354212   17.187 17.143 17.9   B9I 5 0
72 LAMOST J013440.89+304619.2 * 01 34 40.86 +30 46 19.1   17.291 17.296     B5I 3 0
73 SDSS J013514.15+304422.4 EB* 01 35 14.1524732232 +30 44 22.534780164   16.5 17.654 17.3   ~ 4 0
74 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
75 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
76 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
77 NGC 3621 Sy2 11 18 16.300 -32 48 45.36 10.10 9.44 9.56 8.07 10.1 ~ 661 3
78 NGC 4248 GiG 12 17 49.8429850848 +47 24 33.085192824   13.12 12.53     ~ 129 1
79 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
80 NAME Local Group GrG ~ ~           ~ 9325 0

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