2018MNRAS.476.4418J

Query : 2018MNRAS.476.4418J

2018MNRAS.476.4418J - Mon. Not. R. Astron. Soc., 476, 4418-4434 (2018/June-1)

Stellar photospheric abundances as a probe of discs and planets.

JERMYN A.S. and KAMA M.

Abstract (from CDS):

Protoplanetary discs, debris discs, and disrupted or evaporating planets can all feed accretion on to stars. The photospheric abundances of such stars may then reveal the composition of the accreted material. This is especially likely in B to mid-F type stars, which have radiative envelopes and hence less bulk-photosphere mixing. We present a theoretical framework (CAM), considering diffusion, rotation, and other stellar mixing mechanisms to describe how the accreted material interacts with the bulk of the star. This allows the abundance pattern of the circumstellar material to be calculated from measured stellar abundances and parameters (vrot, Teff). We discuss the λ Bootis phenomenon and the application of CAM on stars hosting protoplanetary discs (HD 100546, HD 163296), debris discs (HD 141569, HD 21997), and evaporating planets (HD 195689/KELT-9).

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

Journal keyword(s): planets and satellites: composition - protoplanetary discs - stars: abundances - stars: atmospheres - stars: chemically peculiar - circumstellar matter

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * pi. Cet SB* 02 44 07.3477594066 -13 51 31.279407049 3.66 4.112 4.236     B7IV 332 0
2 HD 21997 PM* 03 31 53.6470102728 -25 36 50.940001116   6.501 6.372   6.25 A3IV/V 153 0
3 HD 278937 Y*O 03 40 46.9605708144 +32 31 53.715087444   10.66 10.40     A7III:kA2.5mA3e(r) 85 0
4 V* AB Aur Ae* 04 55 45.8458932216 +30 33 04.292077032 7.20 7.16 7.05 6.96 6.70 A0Ve 1067 2
5 HD 31648 Ae* 04 58 46.2655706952 +29 50 36.987625680 7.84 7.78 7.62 7.76 7.43 A5Vep 518 0
6 HD 36112 Ae* 05 30 27.5285630040 +25 19 57.076288752   8.57 8.27     A8Ve 469 0
7 HD 244604 Or* 05 31 57.2511172320 +11 17 41.368840404   9.61 9.43     A0Vesh 75 0
8 HD 245185 Ae* 05 35 09.6034684104 +10 01 51.465413208 10.05 10.07 9.93     A0Vae 127 0
9 V* T Ori Ae* 05 35 50.4482802768 -05 28 34.925254536 12.724 11.637 11.248 10.09 10.043 A8VnekA1mA2_lB 247 0
10 BD-06 1253 Ae* 05 36 25.4320468080 -06 42 57.684730284   11.65 10.9 10.29   A1e 435 1
11 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1903 1
12 HD 68695 Y*O 08 11 44.5714665288 -44 05 08.777141772   9.93 9.87     A3VbekA0mA0_lB 43 0
13 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 806 1
14 * lam Boo dS* 14 16 23.0184083839 +46 05 17.895459693 4.31 4.26 4.18 4.16 4.13 A0Va_lB 348 0
15 HD 139614 Ae? 15 40 46.3820275416 -42 29 53.538761832   8.47 8.24     A9VekA5mA5(_lB) 209 0
16 HD 141569 Y*O 15 49 57.7482550392 -03 55 16.341617064 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 540 0
17 HD 142666 TT* 15 56 40.0221861696 -22 01 40.005872148 9.41 9.37 8.82 8.31 8.01 F0V_sh 269 0
18 HD 144432 Ae* 16 06 57.9533126832 -27 43 09.760564056 8.47 8.53 8.19 7.82 7.53 A9/F0V 245 1
19 HD 163296 Ae* 17 56 21.2881851168 -21 57 21.871819008 7.00 6.93 6.85 6.86 6.67 A3VaekA1mA1 1110 0
20 HD 169142 Ae* 18 24 29.7799891464 -29 46 49.327400568   8.42 8.16     F1VekA3mA3_lB? 448 0
21 HD 176386 Y*O 19 01 38.9318002416 -36 53 26.561166432 7.28 7.44 7.32 8.11   B9Vbs 136 0
22 HD 179218 Ae* 19 11 11.2538919456 +15 47 15.636008472 7.55 7.476 7.39 7.25 7.21 A0Ve 255 0
23 HD 181327 PM* 19 22 58.9437222504 -54 32 16.975668624   7.50 7.04   6.49 F6V 285 0
24 HD 185603b Pl 19 38 38.7352230144 +31 13 09.217127532           ~ 127 0
25 HD 195689b Pl 20 31 26.3534153736 +39 56 19.773037500           ~ 278 0
26 HD 195689 SB* 20 31 26.3534153736 +39 56 19.773037500   7.59 7.56     A0 121 0
27 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1236 3
28 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1138 0

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