2024ApJ...975L..12P

Query : 2024ApJ...975L..12P

2024ApJ...975L..12P - Astrophys. J., 975, L12 (2024/November-1)

Quadratic Frequency Dispersion in the Oscillations of Intermediate-mass Stars.

PANDA S.K., HANASOGE S., DHANPAL S. and VAGEESH D.C.

Abstract (from CDS):

Asteroseismology, the study of stellar vibration, has met with great success, shedding light on stellar interior structure, rotation, and magnetism. Prominently known as δ Scutis, the intermediate-mass main-sequence oscillators that often exhibit rapid rotation and possess complex internal stratification are important targets of asteroseismic study. δ Scuti pulsations are driven by the κ (opacity) mechanism, resulting in a set of acoustic modes that can be challenging to interpret. Here, we apply machine learning to identify new patterns in the pulsation frequencies of δ Scuti stars, discovering resonances spaced according to quadratic functions of integer mode indices. This unusual connection between mode frequencies and indices suggests that rotational influence may play an important role in determining the frequencies of these acoustic oscillations.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Delta Scuti variable stars

Simbad objects: 85

goto Full paper

goto View the references in ADS

Number of rows : 85
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 HD 1543 * 00 18 56.3476965984 -76 52 36.217052076   9.64 9.37     A4V 9 0
2 HD 2929 * 00 33 06.1605246408 +52 41 35.967141384   9.21 9.07     A0 14 0
3 HD 3239 * 00 36 05.8735087440 +54 50 54.544629156   8.10 7.84     A2 14 0
4 HD 12870 * 02 06 28.3239003048 +18 28 54.184845864   9.01 8.80     A0 10 0
5 HD 15259 Em* 02 27 22.2040972104 -01 01 27.276238308   9.47 9.23 9.3   A5/7IV 26 0
6 HD 18295 * 02 57 54.0852135888 +46 39 40.380697044   7.75 7.58     A5 17 0
7 HD 22603 * 03 40 34.5237251952 +52 00 30.206485116   9.49 9.10     AmF0 26 0
8 HD 25496 * 03 52 38.6873003328 -79 20 30.203682756   9.34 9.12     A2V 9 0
9 HD 24283 * 03 56 00.8175802944 +65 24 30.969899136   8.51 8.28     A3 9 0
10 HD 26206 * 04 05 31.3117664040 -58 28 41.930707080   8.14 7.98     A3/4V 15 0
11 HD 27984 * 04 24 45.8667108240 -09 13 24.536277228   7.88 7.69     A3V 13 0
12 BD+49 1277 * 04 57 45.3485497464 +50 13 19.465954644   9.66 9.42     ~ 6 0
13 HD 31748 * 04 58 11.8038574584 -05 15 06.069072348   9.60 9.47 10.0   A1IV 17 0
14 HD 33023 * 05 07 11.8780477848 -03 29 46.918184568   8.41 8.29     A2/3V 30 0
15 HD 32731 * 05 09 17.4376575096 +61 30 39.511784484   9.05 8.86     A0 15 0
16 HD 33634 * 05 11 49.9260384360 +05 59 49.313004612   9.18 8.81     A3 4 0
17 HD 33964 * 05 13 25.5762767040 -12 54 48.781134360   9.29 8.98     A9V 9 0
18 * 14 Cam * 05 13 31.2449981304 +62 41 28.077814176   6.678 6.477     A7Vn 36 0
19 HD 35714 V* 05 26 59.9951056104 +07 10 13.023218856   7.16 7.03     A2V 25 0
20 CPD-63 472 * 05 39 17.4289517990 -63 43 39.853817006   10.768 10.519 10.653   ~ 9 0
21 HD 35540 * 05 40 03.5262236208 +81 23 42.897894756   8.91 8.65     F2 5 0
22 HD 40528 * 05 52 20.9288420784 -72 20 33.339258636   9.31 9.01     A8IV/V 10 0
23 HD 39841 * 05 52 52.8079260480 -45 18 07.086536964   7.92 7.70     A8/9V 13 0
24 TYC 5934-955-1 * 06 21 14.4628153968 -15 24 39.833054136   10.76 10.45     ~ 6 0
25 HD 45981 * 06 29 53.1691430520 -20 13 53.088497040   8.52 8.31     A3II/III 14 0
26 HD 47542 * 06 35 36.5534044032 -57 53 09.227053140   10.14 9.98     A1V 10 0
27 BD+36 1468 * 06 37 04.6057174896 +36 34 19.972233192   9.80 9.57     A2 4 0
28 HD 51535 * 06 58 18.8064010560 +13 15 03.339428832   8.24 8.01     A5 8 0
29 HD 52247 * 06 58 29.5036685584 -41 57 37.814740574   8.85 8.59     A7V 6 0
30 HD 267671 Pe* 07 00 55.1854691880 +30 04 18.685047360   9.51 9.27     kA3hA5mA7Sr 8 0
31 HD 293072 * 07 03 07.3766872992 -00 26 10.810427640   10.81 10.63     A0 7 0
32 TYC 8920-1708-1 * 07 06 56.4165480168 -67 25 14.210090796   11.49 11.17     ~ 5 0
33 TYC 766-1405-1 * 07 12 10.1743437216 +10 26 39.260346144   10.40 10.24     ~ 3 0
34 HD 57177 * 07 25 10.5379932984 +67 08 49.869408048   7.70 7.62     A0 12 0
35 HD 59871 * 07 29 01.1807226888 -54 31 01.792735752   10.33 10.02     A9IV/V 6 0
36 HD 60882 * 07 35 04.0552984776 -37 06 52.503870996   8.65 8.38     A7IV 11 0
37 HD 60979 * 07 35 14.4686363136 -40 50 40.491939012   9.36 9.16     A4V 10 0
38 TYC 8560-1128-1 * 07 36 29.7131556984 -57 53 45.142989756   11.06 10.68     ~ 10 0
39 BD+00 2081 * 07 47 05.5244967240 +00 01 50.437863336   9.83 9.61     A2 15 0
40 HD 64995 * 07 54 48.9112229880 -39 59 47.359192236   8.54 8.27     F0V 12 0
41 HD 65897 * 07 56 38.0910148368 -65 36 50.122461240   8.94 8.83     A1Vn 18 0
42 CD-60 2013 * 08 00 07.3422137952 -61 01 51.206141676   10.9 10.5     ~ 23 0
43 HD 76162 * 08 51 52.0143670920 -57 17 37.136210568   8.16 7.97     A3V 21 0
44 HD 78981 * 09 11 52.4673473568 +23 37 51.143389248   9.15 8.94     A 7 0
45 HD 83351 * 09 38 35.7145622088 +30 45 41.297495076   8.68 8.41     F0 19 0
46 HD 82371 * 09 41 45.0095875608 +82 21 54.514048032   7.66 7.49     A0 15 0
47 HD 86449 * 09 57 48.7921533336 -33 16 02.704925640   8.99 8.76     A5V 6 0
48 HD 89684 * 10 18 51.6974253912 -65 23 29.210206164   9.07 8.77     A8V 6 0
49 HD 93812 * 10 49 43.8058519056 -11 06 37.939220280   9.72 9.51     A9V 13 0
50 HD 237958 * 10 59 06.1747244904 +55 41 38.466948084   9.93 9.62     A7 5 0
51 HD 95282 * 10 59 54.5156031504 -17 19 01.089695316   8.62 8.38     A2/3II/III 21 0
52 HD 105873 * 12 11 12.0193035768 -46 23 37.254854796   9.72 9.48     A5IV 14 0
53 HD 108200 * 12 25 21.4102193160 +59 33 54.532711872   8.58 8.37     A3 14 0
54 HD 108324 * 12 26 53.9736164688 -32 58 48.136481400   9.23 8.97     A5IV/V 6 0
55 HD 121774 * 13 59 37.0866629592 -63 09 28.969426656   10.23 9.92     A5V 5 0
56 HD 125766 * 14 23 29.5102675248 -56 32 00.244402476   8.63 8.35     A3III/IV 7 0
57 HD 135118 * 15 06 53.6331741552 +75 59 07.042251768   8.45 8.29     A2 14 0
58 TYC 4427-1021-1 HS* 17 04 58.3764154176 +73 04 43.201031304   10.57 10.90     sdB 11 0
59 HD 156696 * 17 17 55.5233845416 +28 54 22.771356192   7.73 7.46     F0 16 0
60 HD 158652 * 17 26 27.2933038248 +61 59 53.858058180   9.03 8.81     F2 14 0
61 TYC 9061-1955-1 * 17 27 43.3270513056 -64 15 09.412305300   11.32 11.01     ~ 1 0
62 HD 238789 * 17 58 58.7036319288 +59 59 04.587309024   9.87 9.54     A5 6 0
63 HD 166265 * 18 11 03.2657764872 -29 45 08.839890324   8.02 7.75     A9V 13 0
64 HD 341747 Em* 18 13 01.5935533776 +22 05 24.152050356   9.96 9.68 9.7   kA2hA8mA7 9 0
65 HD 348246 * 18 15 13.2708754104 +19 21 42.078794760   10.16 9.89     A5 8 0
66 HD 336765 * 18 41 58.3798496400 +24 37 27.082941240   10.32 10.02     A2 6 0
67 HD 176911 * 18 55 26.8857066504 +73 09 47.378831292   9.02 8.82     A2 9 0
68 CD-68 2038 * 19 00 13.6481665968 -68 34 12.913814172   9.82 9.52     ~ 6 0
69 HD 175609 * 19 02 41.5309442568 -71 51 54.350423820   8.67 8.48     A3IV 5 0
70 HD 178327 dS* 19 05 40.6256764176 +49 18 20.569417056   8.80 8.44     kA6hA9mF0(III) 26 0
71 HD 178423 * 19 10 26.4381762744 -42 17 44.213233884   9.56 9.30     A6III/IV 6 0
72 HD 182271 dS* 19 22 17.5992118296 +37 53 08.496880656   8.84 8.67     A3IVn 20 0
73 HD 185080 * 19 33 56.9599739592 +60 16 17.109255252   9.83 9.59     A2 13 0
74 V* V1745 Cyg dS* 19 37 29.8965090432 +29 36 54.409781952   7.58 7.44     A2 24 0
75 HD 186563 * 19 48 17.0686364352 -57 43 31.277432820   7.60 7.42     A5V 16 0
76 HD 187609 * 19 53 26.0674875360 -52 18 56.156148612   9.41 9.23     A4V 9 0
77 HD 190219 * 20 06 31.6401819576 -54 05 04.962858792   8.37 8.27     A1/2Vn 11 0
78 HD 195572 * 20 34 58.4199585024 -57 48 54.875939292   8.94 8.72     A8V 7 0
79 HD 196392 * 20 42 05.1950052456 -70 55 51.409260444   7.92 7.78     A2V 13 0
80 HD 199966 Pu* 21 04 16.0549890072 -67 33 48.294954648   9.17 9.00   8.59 A3V 11 0
81 HD 201857 * 21 11 11.7819847824 +36 39 18.100649556   8.31 8.05     A5 14 0
82 HD 211408 * 22 16 24.9567358560 +24 11 39.536953044   8.55 8.35     A0 10 0
83 HD 216948 * 22 56 44.5038779016 +36 01 32.065546980   8.56 8.31     A2 9 0
84 HD 222496 * 23 41 19.6031150328 -33 34 18.957171828   9.68 9.48     A5IV 12 0
85 HD 223785 * 23 52 39.8812147416 -18 33 42.744260052   6.916 6.824     A1V 30 0

To bookmark this query, right click on this link: simbad:objects in 2024ApJ...975L..12P and select 'bookmark this link' or equivalent in the popup menu