2018MNRAS.478.2243S

Query : 2018MNRAS.478.2243S

2018MNRAS.478.2243S - Mon. Not. R. Astron. Soc., 478, 2243-2256 (2018/August-1)

KIC 3240411 - the hottest known SPB star with the asymptotic g-mode period spacing.

SZEWCZUK W. and DASZYNSKA-DASZKIEWICZ J.

Abstract (from CDS):

We report the discovery of the hottest hybrid B-type pulsator, KIC 3240411, that exhibits the period spacing in the low-frequency range. This pattern is associated with asymptotic properties of high-order gravity (g-) modes. Our seismic modelling made simultaneously with the mode identification shows that dipole axisymmetric modes best fit the observations. Evolutionary models are computed with MESA code and pulsational models with the linear non-adiabatic code employing the traditional approximation to include the effects of rotation. The problem of mode excitation is discussed. We confirm that significant modification is indispensable to explain an instability of both pressure and gravity modes in the observed frequency ranges of KIC 3240411.

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

Journal keyword(s): stars: early-type - stars: individual: KIC 3240411 - stars: oscillations - stars: rotation - stars: opacity

Simbad objects: 15

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Number of rows : 15
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 * gam Peg bC* 00 13 14.1523490172 +15 11 00.954346538 1.75 2.61 2.84 2.94 3.13 B2IV 720 0
2 HD 21071 Pu* 03 25 57.3820460520 +49 07 14.729885580 5.53 6.02 6.09     B7V 180 0
3 * nu. Eri bC* 04 36 19.1419185396 -03 21 08.857744927 2.82 3.737 3.928     B2III 407 0
4 HD 43317 Pu* 06 15 47.0134228488 +04 17 01.095049500 5.82 6.456 6.614     B3IV 129 0
5 HD 50230 Pu* 06 52 19.8143879448 -00 40 38.959876308   8.93 8.95     B3III 54 0
6 HD 179506 gD* 19 10 57.7607883552 +41 46 33.421683180   7.87 7.91     B8VsHestr(B6) 44 0
7 2MASS J19120273+4742364 Em* 19 12 02.7395758512 +47 42 36.406192932           B8.3V 72 0
8 2MASS J19253699+4523448 Pu* 19 25 36.9899720424 +45 23 44.902125744           ~ 17 0
9 TYC 3135-115-1 bC* 19 31 06.7281742056 +38 19 41.718615204   10.07 10.15     B2V 25 0
10 HD 184939 SB* 19 35 07.8332799936 +40 01 28.891242084   8.79 8.86     A2 29 0
11 BD+43 3310 Pu* 19 37 29.7688619736 +43 24 57.369736800   10.32 10.28     B9IV 62 0
12 2MASS J19405445+3834503 Pu* 19 40 54.4541104248 +38 34 50.348300448           B6.5IV 21 0
13 HD 186567 * 19 42 48.8430567072 +50 21 39.806399160   9.07 9.21   9.191 F 33 0
14 HD 201433 ** 21 08 38.88977 +30 12 20.2935           B8V 103 0
15 * 12 Lac bC* 22 41 28.6495065456 +40 13 31.609736580 4.24 5.080 5.229     B1.5III 369 0

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