2022MNRAS.515.4350C

Query : 2022MNRAS.515.4350C

2022MNRAS.515.4350C - Mon. Not. R. Astron. Soc., 515, 4350-4358 (2022/September-3)

Spectroscopic study of five SB1 stars with CP components.

CATANZARO G., COLOMBO C., FERRARA C. and GIARRUSSO M.

Abstract (from CDS):

In this paper, we present the results of a spectroscopic campaign devoted to ascertaining the actual nature of a sample of five objects reported as chemically peculiar stars in the Catalogue of Ap, HgMn and Am stars (2009, A&A, 498, 961). Spectroscopic observations were obtained with Catania Astrophysical Observatory Spectropolarimeter. For each of the objects, we derive the effective temperature, gravity, rotational and radial velocities, and chemical abundances using the spectral synthesis method. All the targets were found to be SB1 systems. Our abundance analysis led us to classify HD 40788 and HD 187959 as marginal Am stars and HD 202431 as an Am star, and to confirm HD 134793 as an SrEuCr Ap star and, finally, HD 189652 as a normal star. Finally, we confirm that Am stars can possibly be used as an accurate tool to date stellar populations in galaxies.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): line: formation - line: identification - radiative transfer - stars: abundances - binaries: spectroscopic - stars: chemically peculiar

Simbad objects: 21

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Number of rows : 21
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 27411 PM* 04 18 37.4916446424 -22 58 10.995306132   6.372 6.060     A3mA5-F2 62 0
2 HD 40788 ** 06 02 09.4107450480 +23 55 47.279814816   9.27 9.04     kA2hA6mA7Si 20 0
3 HD 43509 ** 06 17 29.0021180376 +20 48 26.789435928   9.47 9.23 9.06   kA2hA9mF1SiEu 14 1
4 HD 50766 * 06 55 48.1220211888 +27 14 58.221931632   7.92 7.78     A3/4 10 0
5 HD 52403 * 07 02 07.2047099880 +25 25 32.176732512   7.15 7.04     A2 23 0
6 HD 58246A * 07 25 35.2943501104 +20 29 42.509707902   7.61 7.28 8.27   A5 17 0
7 * 2 Hya EB* 08 26 27.2059310314 -03 59 14.749144878   5.809 5.590     F0VmA6 101 0
8 * 67 UMa dS* 12 02 06.7790915049 +43 02 44.028988799   5.47   5.1   F0Vam 122 0
9 HD 113878 * 13 06 00.7403095944 +48 01 41.297136024   8.62 8.24     kA6hF2mF3(III)EuBa 39 0
10 HD 118660 * 13 38 07.8883267440 +14 18 06.932355120   6.750 6.489     A9Vs 59 0
11 V* LV Ser a2* 15 11 34.3636106712 +08 31 01.409246868   7.68 7.54     A3p 80 0
12 HD 162132 SB* 17 47 08.0338354344 +47 36 44.093422656   6.549 6.465   6.37 A2Vs 77 0
13 HD 176483 * 19 00 00.3767622672 +13 42 29.617394436   9.81 9.61     A0 5 0
14 HD 180347 SB* 19 13 38.7883645776 +50 54 30.923568252 8.760 8.64 8.39     kA1hA8mA8 31 0
15 HD 181206 dS* 19 17 24.9155230776 +46 35 35.272623012   9.10 8.84     F0Vs 32 0
16 HD 185658 Em* 19 38 05.1897089136 +45 53 03.825938724   8.33 8.11     F2IIIs 31 0
17 HD 187254 SB* 19 47 11.4301422264 +44 50 53.621412720   8.94 8.71     kA5hA5mF2V 42 0
18 HD 189652 PM* 19 48 04.5706655712 +81 35 10.287959532   8.32 7.96     F0 31 0
19 HD 187959 SB* 19 52 09.4638664800 +15 19 23.784600324   8.04 7.78     kA6hA9mF2(V)EuBa 23 0
20 HD 190165 gD* 20 01 46.7156874888 +45 28 35.844023964 7.940 7.840 7.530     kA3hF0.5mF3(III)Am 38 0
21 HD 202431 SB* 21 11 32.4415469496 +70 49 31.116088776   7.89 7.51     A3 18 0

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