2000A&A...355.1031H


Query : 2000A&A...355.1031H

2000A&A...355.1031H - Astronomy and Astrophysics, volume 355, 1031-1040 (2000/3-3)

Rapidly oscillating Ap stars versus non-oscillating Ap stars.

HUBRIG S., KHARCHENKO N., MATHYS G. and NORTH P.

Abstract (from CDS):

The positions in the HR diagram and the kinematic characteristics of rapidly oscillating and non-oscillating chemically peculiar stars are obtained using new Hipparcos proper motions and parallaxes, and our own radial velocity measurements. We find that rapidly oscillating stars, as a group, are (-0.47±0.34)mag above the zero-age main sequence (ZAMS), while the non-oscillating stars are (-1.20 ±0.65)mag above the ZAMS and so appear slightly more evolved on average. From the comparison of the kinematical characteristics, we conclude that both groups are very similar. The results of radial velocity measurements indicate that there is a real deficiency of binaries among rapidly oscillating stars. Presently, no such star is known to be a spectroscopic binary.

Abstract Copyright:

Journal keyword(s): stars: binaries: general - stars: chemically peculiar - stars: kinematics - stars: oscillations

Simbad objects: 48

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Number of rows : 48
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 V* AP Scl a2* 01 05 55.6980950160 -26 43 44.007202704   8.60 8.40     A2Vp 109 0
2 V* VV Scl EB* 01 16 06.8199004056 -34 08 55.745106432   8.59 8.37     ApSrCrEu 49 0
3 V* BN Cet a2* 02 06 15.8004336360 -19 07 26.305108608   10.56 10.17     ApSrEuCr 49 0
4 V* BT Hyi a2* 03 00 37.0849651248 -81 54 07.305942240   9.64 9.35     ApSrEuCr 48 0
5 HD 22488 * 03 32 46.2667196760 -66 43 46.125267240   7.88 7.50     ApSrEuCr 27 0
6 HD 23207 PM* 03 42 44.5604785200 -18 42 49.677913800   7.79 7.54     ApSrEuCr 33 0
7 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 388 0
8 HD 27285 * 04 17 48.1510435176 -19 52 59.387461212   9.99 9.73     ApEuSrCr 15 0
9 HD 29578 * 04 36 30.7825149216 -54 37 16.161212064   8.82 8.51     ApSrEuCr 34 0
10 V* SY Pic a2* 04 48 38.5184339256 -49 10 11.844118056   9.16 8.85     ApSrCrEu 49 0
11 HD 35353 * 05 23 43.6351674672 -08 17 22.519071384   7.87 7.66     ApSrEuCr 30 0
12 HD 51684 ** 06 56 29.8894824432 -40 59 25.049785740   8.25 7.94     ApSrEuCr 39 0
13 V* V409 Car a2* 07 30 56.9886639144 -57 59 28.238685684   9.13 8.89     ApSr(Eu) 119 0
14 * 49 Cam a2* 07 46 27.4146675768 +62 49 49.882910592   6.750 6.458     A7VpSrCrEuSiKsn 135 0
15 V* LX Hya a2* 09 18 25.0298292960 -20 22 16.256631972   8.08 7.77     A9IIs 69 0
16 V* KU Hya a2* 09 22 50.8563427 -09 50 19.659199 6.86 6.75 6.53     ApEuCrSr 163 0
17 HD 81588 * 09 24 54.4141546032 -48 29 07.357356492   8.72 8.45     ApSrCrEu 27 0
18 HD 83368 a2* 09 36 25.40686 -48 45 04.2549   6.480 6.232     A8VSrCrEu+F9V 263 0
19 V* V437 Car a2* 09 54 53.4231457944 -58 41 45.371092740   9.70 9.38     ApSr 46 0
20 HD 92499 * 10 40 08.5912210416 -43 04 50.514871224   9.29 8.88     ApSrEuCr 35 0
21 V* TX Crt a2* 11 05 34.0436531568 -25 01 09.250435488   9.88 9.45     ApSrEuCr 37 0
22 HD 99563 a2* 11 27 16.63609 -08 52 08.1942       9.193   A9III 77 0
23 V* V816 Cen dS* 11 37 37.0409608152 -46 42 34.877876832 8.99 8.79 8.03     F8/G0p 308 0
24 HD 110072 a2* 12 39 50.2107240144 -34 22 28.924668876   10.42 9.97     ApSr(Cr) 20 0
25 HD 112528 a2* 12 57 35.3157391344 -19 45 01.674889956   8.58 8.25     ApSrEu(Cr) 35 0
26 HD 115606 * 13 18 02.4609064584 +13 00 00.462136140 8.970 8.860 8.550     kA2hA7mF0(IV)EuSr 33 0
27 V* HH Com a2* 13 18 37.2495284424 +26 21 56.748367008   8.08 7.83     A2p 109 0
28 HD 116114 PM* 13 21 46.3079033856 -18 44 31.563482928   7.34 7.02     F0VpSrCrEu 131 0
29 V* PP Vir a2* 14 04 48.9376773456 +05 24 51.459774732   8.70 8.29     F0 75 0
30 * alf Cir a2* 14 42 30.4195804 -64 58 30.493451 3.55 3.43 3.19 2.96 2.86 A7VpSrCrEu 353 0
31 HD 131750 V* 14 56 20.7606981672 -30 52 37.946166060   8.81 8.56     ApSrCrEu 18 0
32 V* HI Lib a2* 15 09 02.4051867312 -13 59 58.675373736   7.84 7.46     F2VpSrCrEu 126 0
33 * bet CrB a2* 15 27 49.7315305 +29 06 20.522375 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 673 0
34 * 33 Lib a2* 15 29 34.7424021408 -17 26 27.377921220 7.22 7.07 6.69     F0VspEuGdSr 243 0
35 HD 138777 * 15 34 27.7519101336 -06 53 16.388289744   10.20 9.73     F2IV 20 0
36 V* V953 Sco a2* 16 20 09.8193304032 -25 51 26.425530468   10.19 9.65     A8/9V 41 0
37 HD 151301 Pu* 16 49 28.3161273384 -54 26 48.017458788   8.96 8.54     ApSrCrEu 15 0
38 HD 154708 a2* 17 10 28.5163457616 -58 00 17.416695708   9.23 8.76     ApSrEu 80 0
39 HD 165474 * 18 05 42.8401334904 +12 00 12.191017896   7.685 7.402     ~ 96 0
40 HD 170565 Pe* 18 30 08.2792427952 -02 35 27.303527040   9.54 9.12     A5pSrEuCrSi 26 0
41 * 10 Aql a2* 18 58 46.9240671288 +13 54 23.941711692 6.23 6.14 5.89     A7VpSrEu_Ksn 278 0
42 HD 184471 SB* 19 33 20.4267326904 +32 34 37.124341284   9.31 9.00     A8SrCrEu 44 0
43 HD 190145 * 19 58 59.5795987488 +67 28 19.570775592   7.84 7.55     A2p 35 0
44 HD 200405 SB* 21 01 38.2998330624 +47 54 47.270657412   8.98 8.90     A0pSrCr 36 0
45 * gam Equ a2* 21 10 20.5000721160 +10 07 53.691967776 5.03 4.94 4.68 4.43 4.32 A9VpSrCrEu 533 0
46 V* BD Ind a2* 21 56 56.6970333720 -61 50 46.320856080   7.42 7.19     ApSrEuCr 56 0
47 V* BP Gru a2* 23 01 46.8211202616 -44 50 26.878698672   7.99 7.52     ApSrSi: 123 0
48 HD 218994 ** 23 13 16.03824 -60 35 02.8514   8.8 8.56     ApSr 32 1

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2022.11.30-18:23:42

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