2024MNRAS.531.1244H

Query : 2024MNRAS.531.1244H

2024MNRAS.531.1244H - Mon. Not. R. Astron. Soc., 531, 1244-1255 (2024/June-2)

Identification of A-type supergiants from LAMOST DR5.

HUO Z., LIU Z., LIU J., CUI W., LIU C., JU J., TIAN M., FENG S., SUN M. and LI L.

Abstract (from CDS):

We present a new method for selecting A-type supergiants (A-SGs hereafter) in the LAMOST DR5 data set using the line indices, and identify 40 spectra of 30 A-SG candidates. Based on the analysis of the absolute magnitude of Gaia DR3, SIMBAD data base, ZTF light variation data, and spectral characteristics of A-SGs, we classified the 30 A-SG candidates into 18 A-SGs and 12 A-SG candidates with different levels of credibility. We also subclassify spectral types of 18 A-SGs and 12 A-SG candidates by using human eyes and find a good consistency between our results and those of MKCLASS for most of them. The spatial distribution of 18 A-SGs and 12 A-SG candidates indicates that they are located in the Galactic latitude smaller than 20 . In addition, the distribution of 13 A-SGs and 7 A-SG candidates with reliable Gaia DR3 kinematic parameters in the Toomre diagram indicates that they are located in the Galactic disc, which also suggests that they are young, massive stars. Our selection has worked out well, in that only one A-SG candidate and one A-SG appear to exhibit discrepant kinematics.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): catalogues - stars: early-type - (stars:) supergiants

Simbad objects: 31

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Number of rows : 31
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 BD+52 669 sg* 03 13 47.7288873768 +53 23 05.527151628 13.289 10.79 10.02     A0Ib 11 0
3 LAMOST J031503.13+552602.5 sg* 03 15 03.1367512484 +55 26 02.534892290           ~ 1 0
4 TYC 3724-705-1 sg* 03 39 16.0043546592 +57 35 17.434941108   12.37 11.54     ~ 1 0
5 ATO J055.0364+42.1926 Em* 03 40 08.7456508953 +42 11 33.436239128   13.002 12.274 11.910   ~ 3 0
6 TYC 3334-223-1 sg* 03 53 21.2204041440 +49 35 57.869384496   12.74 11.62     A0Ib 3 0
7 LS V +56 55 sg* 04 07 06.2817859800 +56 14 33.218339388 13.622 11.20 10.69     B 11 0
8 BD+55 887 sg* 04 30 43.5079044336 +55 19 53.439024864   10.90 10.21     B 9 0
9 LAMOST J043155.26+532631.7 sg? 04 31 55.2629437671 +53 26 31.685959090           ~ 1 0
10 LAMOST J050007.97+450827.9 sg* 05 00 07.98 +45 08 28.0           A0Ib 2 0
11 LAMOST J051500.01+362607.0 sg? 05 15 00.0134873632 +36 26 07.053516429           ~ 1 0
12 LAMOST J052000.14+335712.9 sg? 05 20 00.1428000 +33 57 12.913200           ~ 1 0
13 TYC 2398-1273-1 * 05 23 00.6613612320 +34 08 22.962785532   12.69 11.54     ~ 1 0
14 TYC 2909-388-1 sg* 05 28 22.1496468744 +39 08 09.090377520   11.43 10.88     A0/B9.5Ib 3 0
15 LAMOST J054626.95+285348.8 sg* 05 46 26.9566915475 +28 53 48.849497191           ~ 1 0
16 HD 248587 sg* 05 52 22.8174549120 +19 08 58.936773120 8.71 9.16 8.88 8.59   A0Iab 31 0
17 LAMOST J055340.40+273151.8 sg* 05 53 40.4028000 +27 31 51.866400           ~ 1 0
18 TYC 1316-1052-1 sg? 05 57 05.2840717008 +17 19 27.172963164   12.30 11.85 11.70   OB 11 0
19 TYC 1321-1264-1 sg* 06 07 27.8690197176 +18 59 47.817255912   10.11 9.42     ~ 3 0
20 HD 253658 s*b 06 13 56.8108237968 +17 11 01.228285572   10.53 9.79 9.36   B8Ib 14 0
21 TYC 1328-1550-1 sg? 06 30 55.3034643264 +15 24 41.732138088   12.57 11.97     ~ 1 0
22 HD 288810 s*b 06 32 49.7312416584 +00 57 39.292132176   10.10 9.40     B9Iab/Ib 11 0
23 LAMOST J063830.18+034424.9 sg* 06 38 30.18 +03 44 25.0           A0Ib 2 0
24 HD 48452 sg* 06 43 58.2819880392 +11 46 18.628532544   9.04 8.56     A5 18 0
25 HD 48716 sg? 06 45 14.5796661648 +13 20 09.360357684   7.58 7.27     A0 17 0
26 LAMOST J181450.88-011819.0 sg* 18 14 50.8912093968 -01 18 19.116737316           ~ 1 0
27 LAMOST J183458.83+030717.9 sg? 18 34 58.8289430710 +03 07 18.038703487           ~ 1 0
28 LAMOST J190148.95+282213.9 sg? 19 01 48.9394456432 +28 22 14.014297739           ~ 1 0
29 LAMOST J193736.73+260040.5 sg? 19 37 36.7363959471 +26 00 40.583985000           ~ 1 0
30 LAMOST J203421.16+441645.3 s*b 20 34 21.17 +44 16 45.3           B9Ib 2 0
31 2MASS J20432378+4326016 sg* 20 43 23.7807279576 +43 26 01.660430976           ~ 2 0

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