2025MNRAS.542.2866M

Query : 2025MNRAS.542.2866M

2025MNRAS.542.2866M - Mon. Not. R. Astron. Soc., 542, 2866-2876 (2025/October-1)

Characterizing bright δ Scuti pulsators using TESS light curves.

MANI P., BEDDING T.R., BERNIZZONI M., MURPHY S.J. and HEY D.

Abstract (from CDS):

We present a study of bright, young $\delta$ Scuti stars near the zero-age main sequence using TESS light curves and Gaia DR3 data. From a sample of 2041 stars with $G< 7$ and $G_{BP}-G_{RP}$ colour in the range 0-0.6, we identified 444 $\delta$ Scuti pulsators. We measured a pulsator fraction of $\sim$70 per cent in the middle of the instability strip, tapering off towards the edges. A period-luminosity diagram reveals a concentration along the fundamental mode and overtone ridges. We addressed sample completeness and identified low-frequency pulsators possibly exhibiting mixed modes. Cross-matching with nearby young associations showed that 63 $\delta$ Scuti stars from our sample are association members.

Abstract Copyright: © The Author(s) 2025. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): parallaxes - stars: oscillations - stars: variables: Scuti

Simbad objects: 66

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Number of rows : 66
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 THA MGr 00 00 -62.0           ~ 540 0
2 HD 661 ** 00 10 38.5673131503 -73 13 27.734708594   7.03 6.66     A/F 49 0
3 * 74 Psc A ** 01 05 40.9441288477 +21 28 23.490840041 5.26 5.263 5.273     A0IV-Vnn 88 0
4 * 74 Psc B PM* 01 05 41.7111106896 +21 27 55.612006704   5.405 5.455     B9IVn 76 0
5 V* V529 And gD* 01 27 26.6728869648 +41 06 04.177819368   6.711 6.425     A7m 89 0
6 HD 17163 PM* 02 45 20.9065590000 +04 42 41.874872616   6.347 6.031     kA8hA9mF0III 48 0
7 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
8 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
9 * 60 Tau dS* 04 22 03.5181398136 +14 04 37.912925064   6.054 5.710 7.05 5.38 kA3hF2mF2(III) 288 0
10 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1453 0
11 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
12 HD 32040 Pu* 05 00 33.9358613640 +03 36 56.805165648 6.220 6.550 6.630     B9V 73 0
13 HD 35673A * 05 26 31.2170279078 +02 56 09.272495341   6.65 6.71     ~ 4 0
14 HD 35673B * 05 26 31.4102091960 +02 56 10.585644648   8.80 8.56     ~ 1 0
15 NAME 32 Ori group OpC 05 27 11 +06 16.0           ~ 84 0
16 HD 38536 * 05 45 13.0856950104 -31 40 09.532787124   7.21 6.81     F3/5III 20 0
17 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
18 * 4 Mon * 06 08 25.3941883560 -11 08 46.646300184   7.03 6.90     A3V 20 0
19 * eps Mon A * 06 23 46.0854171912 +04 35 34.376500932   4.583 4.398     A8V(n) 102 0
20 * eps Mon B * 06 23 46.4858893296 +04 35 45.135912588   6.99 6.60     F5V 63 0
21 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
22 HD 69682 PM* 08 20 29.0945189208 +53 34 26.725574928 6.880 6.810 6.510     kA8hF0mF3IIIBa 50 0
23 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
24 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
25 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
26 HD 74294 * 08 42 53.7750842928 -09 48 19.999643652   7.05 6.91     A3III 13 0
27 CD-58 2350 * 08 57 03.4878094200 -59 13 35.739800940   6.74 6.87     B8IV: 14 0
28 Cl Platais 8 OpC 09 06 04.4 -58 25 09           ~ 97 0
29 V* V415 Hya gD* 09 25 27.0318666792 -06 24 16.279815204   7.29 7.00     A5II(m) 32 0
30 NAME Volans-Carina Association As* 09 37 00.0 -65 18 00           ~ 24 0
31 HD 83599 PM* 09 44 26.5813662456 +74 35 15.337141224   7.06 6.77     F0 22 0
32 HD 90931 PM* 10 30 36.0493446960 +36 16 24.531787164   7.172 6.838     F0 31 0
33 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
34 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
35 HD 98175 PM* 11 17 10.5912354240 -41 23 25.696914072   7.17 6.84     Fm_dD 23 0
36 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
37 HD 105686A PM* 12 10 02.5598876760 -34 42 17.187521256   6.34 6.35     ~ 5 0
38 HD 105686B * 12 10 02.6403618936 -34 42 13.588251192   8.29 8.00     ~ 4 0
39 * 11 Vir PM* 12 10 03.4181594064 +05 48 25.226524440       5.5   kF0hF0mF5II-III 73 0
40 V* CO Cam SB* 12 12 11.9446126056 +77 36 58.468259340   5.468 5.137   4.77 kA6hF0mF0(III) 121 0
41 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
42 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 467 1
43 HD 110698 ** 12 44 34.9722498288 -57 17 12.848313876   6.710 6.641     A0IV/V 34 0
44 HD 121626 * 13 56 04.7729036400 +28 40 21.178525116   7.025 6.984     A0 25 0
45 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
46 * pi.01 Boo * 14 40 43.5589117488 +16 25 05.975961096 4.18 4.792 4.893 4.47 4.49 B9IIIpHgMnSi 212 0
47 * pi.02 Boo * 14 40 43.9257184848 +16 25 04.071486972   5.979 5.761     A6V 53 0
48 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
49 * rho Oct PM* 15 43 16.9283472840 -84 27 54.988795584   5.676 5.568 5.76   A1/2V 47 0
50 * 40 Ser dS* 15 54 40.2746137440 +08 34 49.215329328   6.437 6.266     A7Vn 57 0
51 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
52 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
53 HD 165645 gD* 18 05 00.8067796248 +41 56 46.658872716   6.641 6.374     F1Vnn 57 0
54 HD 169778 * 18 24 10.9482163704 +42 28 00.844455684   6.736 6.652     A2 16 0
55 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
56 HD 206766 * 21 44 23.8642909464 -04 43 51.220467264   6.72 6.67   6.58 A0V 10 0
57 HD 219512 PM* 23 16 00.7210723584 +35 23 58.875335268   7.14 6.87     F0 25 0
58 HD 222226 SB* 23 38 55.6956611256 -45 36 42.690801132   7.302 7.017     A7/8III 23 0
59 NAME e Tau Association MGr ~ ~           ~ 20 0
60 NAME Psc-Eri Stream St* ~ ~           ~ 70 0
61 NAME Coma Berenices Moving Group MGr ~ ~           ~ 103 0
62 NAME Upper CrA As* ~ ~           ~ 22 0
63 NAME Carina-near Moving Group MGr ~ ~           ~ 118 0
64 NAME Carina Association As* ~ ~           ~ 188 1
65 NAME Argus Association As* ~ ~           ~ 266 0
66 NAME Octans Association As* ~ ~           ~ 101 0

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