2016ApJ...831...27H

Query : 2016ApJ...831...27H

2016ApJ...831...27H - Astrophys. J., 831, 27-27 (2016/November-1)

Rapidly rotating, X-ray bright stars in the Kepler field.

HOWELL S.B., MASON E., BOYD P., SMITH K.L. and GELINO D.M.

Abstract (from CDS):

We present Kepler light curves and optical spectroscopy of twenty X-ray bright stars located in the Kepler field of view. The stars, spectral type F-K, show evidence for rapid rotation including chromospheric activity 100 times or more above the Sun at maximum and flaring behavior in their light curves. Eighteen of our objects appear to be (sub)giants and may belong to the class of FK Com variables, which are evolved rapidly spinning single stars with no excretion disk and high levels of chromospheric activity. Such stars are rare and are likely the result of W UMa binary mergers, a process believed to produce the FK Com class of variable and their descendants. The FK Com stage, including the presence of an excretion disk, is short lived but leads to longer-lived stages consisting of single, rapidly rotating evolved (sub)giants with high levels of stellar activity.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: activity - stars: chromospheres - stars: evolution - stars: rotation - stars: rotation

Simbad objects: 27

goto Full paper

goto View the references in ADS

Number of rows : 27
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 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 551 0
2 V* YY Men Ro* 04 58 17.9369735112 -75 16 37.987856868   9.11 8.05     K1IIIp 133 0
3 V* W UMa SB* 09 43 45.4704536952 +55 57 09.061630668   8.54 7.75     G2Vn 686 0
4 V* FK Com PM* 13 30 46.7996390256 +24 13 57.781233768   9.04 8.245   7.204 G4III 384 1
5 V* ET Dra Ro* 17 50 25.1179947720 +70 45 36.437554548   10.71 9.67     K2.5 49 1
6 BD+43 3055 Em* 18 43 58.6806482184 +43 28 27.737177988   9.94 9.40     F8V 24 0
7 ASAS J185038+4326.7 Er* 18 50 37.8955171488 +43 26 41.556992316   11.85 11.05   10.288 ~ 12 0
8 TYC 3127-147-1 Pu* 18 50 57.0658071912 +42 58 54.260845068   12.22 11.29     ~ 8 0
9 UCAC4 666-070853 PM* 18 53 39.4019464464 +43 09 48.065223528           M5Ve 8 0
10 2MASS J19052248+4328030 * 19 05 22.4848699944 +43 28 02.987449968     12.687   11.716 ~ 20 0
11 BD+41 3238 Er* 19 07 13.6623784680 +41 31 26.881658148   10.61 9.43     K1.5III 8 0
12 BD+42 3262 * 19 10 49.3437202608 +42 55 37.258821480   10.13 9.47     G0 22 0
13 2MASS J19141726+4236315 * 19 14 17.2632000192 +42 36 31.619189772           G2V 14 0
14 TYC 3142-221-1 Er* 19 28 38.8707382128 +41 44 37.302904104   11.84 11.57     G3V 12 0
15 BD+42 3367 SB* 19 30 41.1806496312 +43 02 15.753831468   9.40 7.73     M0 13 0
16 2MASS J19324084+4248265 Er* 19 32 40.8465790608 +42 48 26.561021832           K1.5IVe 13 1
17 BD+42 3393 * 19 35 49.8639044520 +42 21 57.954092580   9.79 8.12     K5 11 0
18 UCAC4 659-075534 V* 19 36 49.0372650408 +41 47 27.479121792   14.843 14.554 14.516   ~ 3 0
19 ASAS J193726+4146.7 EB* 19 37 25.4837958432 +41 46 37.947437508   12.44 11.56   10.139 K3 13 0
20 2MASS J19455741+4145026 gD* 19 45 57.4174307064 +41 45 02.628254520           F5V 7 0
21 UCAC4 658-079884 * 19 47 56.5989524040 +41 32 27.693914424       15.108   ~ 2 0
22 HD 187523 PM* 19 48 44.0723379816 +39 54 59.941234296   7.40 7.01     F3V 22 0
23 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 919 1
24 HD 226195 ** 19 51 24.7965961891 +40 44 07.419472809   8.866 8.28     G1.5V 37 0
25 HD 188667 HB* 19 54 35.3281295448 +41 27 51.792519816   8.31 7.39     K0 33 0
26 ASAS J195503+4055.3 Pu* 19 55 03.0032676720 +40 55 19.492221684     12.007   10.984 G2V 15 0
27 HD 199178 Ro* 20 53 53.6520433056 +44 23 11.080108284   8.01 7.22     G5III-IV 222 1

To bookmark this query, right click on this link: simbad:objects in 2016ApJ...831...27H and select 'bookmark this link' or equivalent in the popup menu