2000A&A...355.1031H

Query : 2000A&A...355.1031H

2000A&A...355.1031H - Astronomy and Astrophysics, volume 3551031-1040 (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 - 2026 		#notes
1 V* AP Scl a2* 01 05 55.6980950160 -26 43 44.007202704   8.60 8.40     A2Vp 121 0
2 V* VV Scl EB* 01 16 06.8199004056 -34 08 55.745106432   8.59 8.37     ApSrCrEu 56 0
3 V* BN Cet a2* 02 06 15.8004336360 -19 07 26.305108608   10.56 10.17     ApSrEuCr 54 0
4 V* BT Hyi a2* 03 00 37.0849651248 -81 54 07.305942240   9.64 9.35     ApSrEuCr 55 0
5 HD 22488 * 03 32 46.2667196760 -66 43 46.125267240   7.88 7.50     ApSrEuCr 33 0
6 HD 23207 PM* 03 42 44.5604785200 -18 42 49.677913800   7.79 7.54     ApSrEuCr 38 0
7 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 411 0
8 HD 27285 * 04 17 48.1510435176 -19 52 59.387461212   9.99 9.73     ApEuSrCr 18 0
9 HD 29578 * 04 36 30.7825149216 -54 37 16.161212064   8.82 8.51     ApSrEuCr 42 0
10 V* SY Pic a2* 04 48 38.5184339256 -49 10 11.844118056   9.16 8.85     ApSrCrEu 54 0
11 HD 35353 * 05 23 43.6351674672 -08 17 22.519071384   7.87 7.66     ApSrEuCr 38 0
12 HD 51684 ** 06 56 29.8894824432 -40 59 25.049785740   8.25 7.94     ApSrEuCr 48 0
13 V* V409 Car a2* 07 30 56.9886639144 -57 59 28.238685684   9.13 8.89     ApSr(Eu) 132 0
14 * 49 Cam a2* 07 46 27.4146675768 +62 49 49.882910592   6.750 6.458     A7VpSrCrEuSiKsn 146 0
15 V* LX Hya a2* 09 18 25.0298292960 -20 22 16.256631972   8.08 7.77     A9IIs 75 0
16 V* KU Hya a2* 09 22 50.8563427 -09 50 19.659199 6.86 6.75 6.53     ApEuCrSr 176 0
17 HD 81588 * 09 24 54.4141546032 -48 29 07.357356492   8.72 8.45     ApSrCrEu 32 0
18 HD 83368 a2* 09 36 25.4255061727 -48 45 04.240404102   6.49 6.23     A8VSrCrEu 277 0
19 V* V437 Car a2* 09 54 53.4231457944 -58 41 45.371092740   9.70 9.38     ApSr 53 0
20 HD 92499 * 10 40 08.5912210416 -43 04 50.514871224   9.29 8.88     ApSrEuCr 43 0
21 V* TX Crt a2* 11 05 34.0436531568 -25 01 09.250435488   9.88 9.45     ApSrEuCr 43 0
22 HD 99563 a2* 11 27 16.63609 -08 52 08.1942       9.193   A9III 86 0
23 V* V816 Cen dS* 11 37 37.0409608152 -46 42 34.877876832 8.99 8.79 8.03     F8/G0p 332 0
24 HD 110072 a2* 12 39 50.2107240144 -34 22 28.924668876   10.42 9.97     ApSr(Cr) 25 0
25 HD 112528 a2* 12 57 35.3157391344 -19 45 01.674889956   8.58 8.25     ApSrEu(Cr) 40 0
26 HD 115606 * 13 18 02.4609064584 +13 00 00.462136140 8.970 8.860 8.550     kA2hA7mF0(IV)EuSr 39 0
27 V* HH Com a2* 13 18 37.2495284424 +26 21 56.748367008   8.08 7.83     A2p 118 0
28 HD 116114 PM* 13 21 46.3079033856 -18 44 31.563482928   7.34 7.02     F0VpSrCrEu 145 0
29 V* PP Vir a2* 14 04 48.9376773456 +05 24 51.459774732   8.70 8.29     F0 86 0
30 * alf Cir a2* 14 42 30.4206520931 -64 58 30.478845491 3.55 3.43 3.19 2.96 2.86 A7VpSrCrEu 384 0
31 HD 131750 V* 14 56 20.7606981672 -30 52 37.946166060   8.81 8.56     ApSrCrEu 22 0
32 V* HI Lib a2* 15 09 02.4051867312 -13 59 58.675373736   7.84 7.46     F2VpSrCrEu 136 0
33 * bet CrB a2* 15 27 49.7540595700 +29 06 20.494640434 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 703 0
34 * 33 Lib a2* 15 29 34.7424021408 -17 26 27.377921220 7.22 7.07 6.69     F0VspEuGdSr 260 0
35 HD 138777 * 15 34 27.7519101336 -06 53 16.388289744   10.20 9.73     F2IV 27 0
36 V* V953 Sco a2* 16 20 09.8193304032 -25 51 26.425530468   10.19 9.65     A8/9V 49 0
37 HD 151301 Pu* 16 49 28.3161273384 -54 26 48.017458788   8.96 8.54     ApSrCrEu 19 0
38 HD 154708 a2* 17 10 28.5163457616 -58 00 17.416695708   9.23 8.76     ApSrEu 91 0
39 HD 165474 * 18 05 42.8401334904 +12 00 12.191017896   7.69 7.40     A6VpSrCrEuSi 105 0
40 HD 170565 Pe* 18 30 08.2792427952 -02 35 27.303527040   9.54 9.12     A5pSrEuCrSi 34 0
41 * 10 Aql a2* 18 58 46.9240671288 +13 54 23.941711692 6.23 6.14 5.89     A7VpSrEu_Ksn 292 0
42 HD 184471 SB* 19 33 20.4267326904 +32 34 37.124341284   9.31 9.00     A8SrCrEu 53 0
43 HD 190145 * 19 58 59.5795987488 +67 28 19.570775592   7.84 7.55     A2p 43 0
44 HD 200405 SB* 21 01 38.2998330624 +47 54 47.270657412   8.98 8.90     A0pSrCr 39 0
45 * gam Equ a2* 21 10 20.5000721160 +10 07 53.691967776 5.03 4.94 4.68 4.43 4.32 A9VpSrCrEu 564 0
46 V* BD Ind a2* 21 56 56.6970333720 -61 50 46.320856080   7.42 7.19     ApSrEuCr 66 0
47 V* BP Gru a2* 23 01 46.8211202616 -44 50 26.878698672   7.99 7.52     ApSrSi: 137 0
48 HD 218994 ** 23 13 16.03824 -60 35 02.8514           ApSr 40 0

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