2019MNRAS.483.2300S

Query : 2019MNRAS.483.2300S

2019MNRAS.483.2300S - Mon. Not. R. Astron. Soc., 483, 2300-2324 (2019/February-3)

A volume-limited survey of mCP stars within 100 pc - I. Fundamental parameters and chemical abundances.

SIKORA J., WADE G.A., POWER J. and NEINER C.

Abstract (from CDS):

We present the first results of a volume-limited survey of main-sequence (MS) magnetic chemically peculiar (mCP) stars. The sample consists of all identified intermediate-mass MS stars (mCP and non-mCP) within a heliocentric distance of 100 pc as determined using Hipparcos parallaxes. The two populations are compared in order to determine the unique properties that allow a small fraction of MS stars with masses ≳1.4 M_☉to host strong, large-scale magnetic fields. A total of 52 confirmed mCP stars are identified using published magnetic, spectroscopic, and photometric observations along with archived and newly obtained spectropolarimetric (Stokes V) observations. We derive the fundamental parameters (effective temperatures, luminosities, masses, and evolutionary states) of the mCP and non-mCP populations using homogeneous analyses. A detailed analysis of the mCP stars is performed using the LLMODELS code, which allows observed spectral energy distributions to be modelled while incorporating chemical peculiarities and magnetic fields. The surface gravities and mean chemical abundances are derived by modelling averaged spectra using the GSSP and ZEEMAN spectral synthesis codes. Masses and stellar ages are derived using modern, densely calculated evolutionary model grids. We confirm a number of previously reported evolutionary properties associated with mCP stars including a conspicuously high incidence of middle-aged MS stars with respect to the non-mCP subsample; the incidence of mCP stars is found to sharply increase with mass from 0.3 per cent at 1.5 M_☉to ≃11 per cent at 3.8 M_☉. Finally, we identify clear trends in the mean photospheric chemical abundances with stellar age.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: abundances - stars: chemically peculiar - stars: early-type - stars: magnetic field

Simbad objects: 65

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Number of rows : 65
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 * ksi Phe a2* 00 41 46.3972997520 -56 30 04.738422240   5.90 5.70     A3VpSrCr_Ksn 137 0
2 * gam02 Ari PM* 01 53 31.8129284424 +19 17 37.879979172   4.49 4.52     A2IVpSiSrCr 162 0
3 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 85 0
4 * alf Psc B * 02 02 02.702254 +02 45 49.72064   5.389 5.135     kA2hF2mF2(IV) 100 1
5 * alf Psc A * 02 02 02.8219762236 +02 45 49.579059841   4.06 4.11     kA0hA7Sr 183 0
6 HD 15144 a2* 02 26 00.3479612520 -15 20 28.495226652 6.06 5.97 5.83 5.71 5.67 A3VpSrCrEu 185 0
7 * iot Cas a2* 02 29 03.94780 +67 24 08.9170           A3IIIpSr+F5V 268 0
8 HD 15717 PM* 02 32 12.1490563800 +22 00 25.149854196   7.71 7.34     F0 26 0
9 * 21 Per a2* 02 57 17.2817216760 +31 56 03.193498176   5.081 5.093     A2VspSiEu 206 0
10 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 411 0
11 * 56 Tau a2* 04 19 36.7048893816 +21 46 24.566827836   5.231 5.346     A0VpSi 193 0
12 * alf Dor a2* 04 33 59.77719 -55 02 41.9243 2.83 3.18 3.28 3.29 3.38 B8IIIpSi 151 0
13 HD 32576 * 05 04 41.8039046808 +14 51 32.503017528   6.91 6.77     A3p 18 0
14 V* V1054 Ori a2* 05 48 25.5041382456 -00 45 34.610849136   7.69       ApSrEuCr 71 0
15 * tet Aur a2* 05 59 43.27012 +37 12 45.3047 2.36 2.54 2.62 2.62 2.68 A0VpSi 296 1
16 * gam Gem SB* 06 37 42.71050 +16 23 57.4095 1.98 1.92 1.92 1.86 1.87 A1.5IV+ 525 1
17 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1610 0
18 V* V592 Mon a2* 06 50 42.3030217728 -08 02 27.587802588 6.31 6.29 6.29     B9V 120 0
19 V* V386 Car a2* 07 04 18.3094021056 -56 44 58.928100288   5.13 5.17     ApSi 120 0
20 * L01 Pup a2* 07 13 13.3506005472 -45 10 57.855357732   4.855 4.874     B9V 98 0
21 * 49 Cam a2* 07 46 27.4146675768 +62 49 49.882910592   6.750 6.458     A7VpSrCrEuSiKsn 146 0
22 * 53 Cam a2* 08 01 42.4403874648 +60 19 27.806833200   6.177 6.008     A3VpSrSiCrEu 410 0
23 HD 64486 PM* 08 04 47.0588749680 +79 28 46.609833972 5.210 5.339 5.387     B9.5IVs 88 0
24 * 3 Hya a2* 08 35 28.1987898408 -07 58 56.257821768 5.68 5.69 5.72     A1VpSrCr 178 0
25 HD 74067 a2* 08 40 19.1757463872 -40 15 49.936471416   5.18 5.22     kB8hA0III(CrEu) 76 0
26 HD 83368 a2* 09 36 25.4255061727 -48 45 04.240404102   6.49 6.23     A8VSrCrEu 277 0
27 * bet UMa PM* 11 01 50.4797515135 +56 22 56.761138187 2.35 2.35 2.37 2.31 2.35 A1IVps 462 0
28 * 46 Cen a2* 11 07 16.6899055992 -42 38 19.247612928   5.25 5.24     ApSrCrEu 73 0
29 * tet Leo PM* 11 14 14.4056705348 +15 25 46.455911128 3.40 3.33 3.35 3.32 3.34 A2IV 353 0
30 * bet Hya a2* 11 52 54.52149 -33 54 29.2672 3.85 4.18 4.28 4.27 4.35 kB8hB8HeA0VSi 110 0
31 HD 107452 * 12 21 08.4642826368 -11 28 32.698292520   8.85 8.58     A0/2V+F0(V) 31 0
32 * 17 Com a2* 12 28 54.7022406648 +25 54 46.265813136   5.208 5.236     B9VCrEu 288 0
33 * 21 Com a2* 12 31 00.5605002264 +24 34 01.797245328   5.496 5.436     A2pv 295 0
34 * gam Mus SB* 12 32 28.0129260853 -72 07 58.763241944 3.12 3.73 3.88 3.91 4.08 B5V+A: 155 0
35 * eps UMa a2* 12 54 01.7495922 +55 57 35.362645 1.76 1.75 1.77 1.79 1.82 A1III-IVpkB9 488 0
36 * alf02 CVn a2* 12 56 01.6655889007 +38 19 06.155170512 2.44 2.76 2.88 2.98 3.05 A0VpSiEu 707 0
37 HD 117025 PM* 13 29 07.9098687240 -64 40 32.882662236 6.23 6.20 6.07     ApSrEuCr 54 0
38 * o Vir a2* 13 34 07.9312445507 +03 39 32.288960317 4.96 4.96 4.94 4.86 4.89 ApEuCrSr 356 0
39 V* CQ UMa a2* 13 40 21.3848060304 +57 12 27.374885568   6.380 6.273     A2IVpSrCr 124 0
40 * 84 UMa a2* 13 46 35.6567876472 +54 25 57.643558644   5.632 5.675     A0VpSrCrEu 168 0
41 HD 122811 * 14 06 06.8636826552 -61 30 52.009205004   9.03 9.00     ApSi 23 0
42 V* CU Vir a2* 14 12 15.8055434051 +02 24 33.945178515 4.46 4.90 5.02 5.10 5.23 ApSi 411 0
43 * alf Cir a2* 14 42 30.4206520931 -64 58 30.478845491 3.55 3.43 3.19 2.96 2.86 A7VpSrCrEu 384 0
44 * mu. Lib ** 14 49 19.05130 -14 08 56.4766 5.33 5.38 5.31     ApSrEuCr 122 0
45 * bet CrB a2* 15 27 49.7540595700 +29 06 20.494640434 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 703 0
46 * 33 Lib a2* 15 29 34.7424021408 -17 26 27.377921220 7.22 7.07 6.69     F0VspEuGdSr 260 0
47 * chi Ser a2* 15 41 47.4147355608 +12 50 51.093705840 5.42 5.37 5.33 5.28 5.32 A2VpMnEu(Sr) 194 0
48 V* BP Boo a2* 15 42 50.7602109000 +52 21 39.243860316   5.430 5.482     A0VpSiCr 140 0
49 * ome Her a2* 16 25 24.9546742056 +14 01 59.762072676 4.53 4.57 4.58 4.51 4.55 A2VpCrSr 242 0
50 * ome Oph a2* 16 32 08.2003815598 -21 27 59.052127058 4.69 4.56 4.45 4.32 4.30 ApSrEuCr 167 0
51 HD 151199 PM* 16 42 58.4585883288 +55 41 24.433991268   6.249 6.172     A2VpSr 105 0
52 * 52 Her a2* 16 49 14.21821 +45 58 59.9620   4.914 4.823     A1VpSiSrCr 267 0
53 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 200 0
54 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
55 * 10 Aql a2* 18 58 46.9240671288 +13 54 23.941711692 6.23 6.14 5.89     A7VpSrEu_Ksn 292 0
56 AG-01 2311 * 19 06 34.8474846816 -01 20 32.674550064   9.817 9.593 9.69   A0V 17 0
57 V* V3961 Sgr a2* 19 51 50.6106718344 -39 52 27.738309468 5.05 5.27 5.33     ApCr(Si) 191 0
58 V* V1291 Aql a2* 19 53 18.7357174440 -03 06 52.063556976   5.837 5.619     F0VpSrCrEu 285 0
59 * gam Equ a2* 21 10 20.5000721160 +10 07 53.691967776 5.03 4.94 4.68 4.43 4.32 A9VpSrCrEu 564 0
60 * tet01 Mic a2* 21 20 45.6194367384 -40 48 34.620146136 4.77 4.84 4.82 4.73 4.69 ApCrEuSr 142 0
61 V* BP Gru a2* 23 01 46.8211202616 -44 50 26.878698672   7.99 7.52     ApSrSi: 137 0
62 HD 217831 PM* 23 04 52.2201409680 -68 49 12.812522844   5.894 5.514     F3III 41 0
63 * kap Psc a2* 23 26 55.9558721856 +01 15 20.177913204 4.94 4.98 4.94 4.87 4.90 A2VpSrCrSi 290 0
64 * iot Phe a2* 23 35 04.5603656472 -42 36 54.503275932 4.86 4.79 4.71 4.59 4.52 ApSrCrEu 126 0
65 * i03 Aqr Pe* 23 51 21.3383366673 -18 54 32.990905266 4.62 5.04 5.18     A0VpSiSr 207 0

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