2014A&A...570A.130S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:30:54

2014A&A...570A.130S - Astronomy and Astrophysics, volume 570A, 130-130 (2014/10-1)

Kepler detection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC 10001893.

SILVOTTI R., CHARPINET S., GREEN E., FONTAINE G., TELTING J.H., OSTENSEN R.H., VAN GROOTEL V., BARAN A.S., SCHUH S. and FOX MACHADO L.

Abstract (from CDS):

KIC 10001893 is one out of 19 subdwarf-B (sdB) pulsators observed by the Kepler spacecraft in its primary mission. In addition to tens of pulsation frequencies in the g-mode domain, its Fourier spectrum shows three weak peaks at very low frequencies, which is too low to be explained in terms of g modes. The most convincing explanation is that we are seeing the orbital modulation of three Earth-size planets (or planetary remnants) in very tight orbits, which are illuminated by the strong stellar radiation. The orbital periods are P1=5.273, P2=7.807, and P3=19.48h, and the period ratios P2/P1=1.481 and P3/P2=2.495 are very close to the 3:2 and 5:2 resonances, respectively. One of the main pulsation modes of the star at 210.68 µHz corresponds to the third harmonic of the orbital frequency of the inner planet, suggesting that we see, for the first time in an sdB star, g-mode pulsations tidally excited by a planetary companion. The extreme planetary system that emerges from the Kepler data is very similar to the recent discovery of two Earth-size planets orbiting the sdB pulsator KIC 05807616 (Charpinet et al., 2011Natur.480..496C).

Abstract Copyright:

Journal keyword(s): planetary systems - stars: horizontal-branch - stars: oscillations - asteroseismology - techniques: photometric - techniques: radial velocities

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Feige 48 HS* 11 47 14.4977747924 +61 15 31.790488292   13.12 13.28     sdB 111 0
2 Kepler-429d Pl 19 09 33.4134010391 +46 59 04.107766133           ~ 1 0
3 Kepler-429c Pl 19 09 33.4134010391 +46 59 04.107766133           ~ 1 0
4 Kepler-429b Pl 19 09 33.4134010391 +46 59 04.107766133           ~ 1 0
5 Kepler-429 HS* 19 09 33.4134010391 +46 59 04.107766133           sdB 20 0
6 Kepler-36b Pl 19 25 00.0430855076 +49 13 54.631289830           ~ 115 1
7 Kepler-70 HS* 19 45 25.4746134531 +41 05 33.882016627 13.80 14.71 14.87 15.43 15.72 sdB 60 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2014A&A...570A.130S and select 'bookmark this link' or equivalent in the popup menu


2020.07.10-02:30:54

© Université de Strasbourg/CNRS

    • Contact