2015A&A...582A..33A


Query : 2015A&A...582A..33A

2015A&A...582A..33A - Astronomy and Astrophysics, volume 582A, 33-33 (2015/10-1)

One of the closest exoplanet pairs to the 3:2 mean motion resonance: K2-19b and c.

ARMSTRONG D.J., SANTERNE A., VERAS D., BARROS S.C.C., DEMANGEON O., LILLO-BOX J., McCORMAC J., OSBORN H.P., TSANTAKI M., ALMENARA J.-M., BARRADO D., BOISSE I., BONOMO A.S., BROWN D.J.A., BRUNO G., CERDA J.R., COURCOL B., DELEUIL M., DIAZ R.F., DOYLE A.P., HEBRARD G., KIRK J., LAM K.W.F., POLLACCO D.L., RAJPUROHIT A., SPAKE J. and WALKER S.R.

Abstract (from CDS):

The K2 mission has recently begun to discover new and diverse planetary systems. In December 2014, Campaign 1 data from the mission was released, providing high-precision photometry for ∼22000 objects over an 80-day timespan. We searched these data with the aim of detecting more important new objects. Our search through two separate pipelines led to the independent discovery of K2-19b and c, a two-planet system of Neptune-sized objects (4.2 and 7.2R), orbiting a K dwarf extremely close to the 3:2 mean motion resonance. The two planets each show transits, sometimes simultaneously owing to their proximity to resonance and the alignment of conjunctions. We obtained further ground-based photometry of the larger planet with the NITES telescope, demonstrating the presence of large transit timing variations (TTVs), and used the observed TTVs to place mass constraints on the transiting objects under the hypothesis that the objects are near but not in resonance. We then statistically validated the planets through the PASTIS tool, independently of the TTV analysis.

Abstract Copyright:

Journal keyword(s): planets and satellites: individual: EPIC201505350c - planets and satellites: detection - planets and satellites: general - planets and satellites: dynamical evolution and stability - planets and satellites: individual: EPIC201505350b

VizieR on-line data: <Available at CDS (J/A+A/582/A33): nites.dat>

Simbad objects: 7

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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 - 2022
#notes
1 K2-19 * 11 39 50.4803341248 +00 36 12.875047920   13.80 13.00 12.88   ~ 41 0
2 K2-19c Pl 11 39 50.4804464997 +00 36 12.877309991           ~ 27 0
3 K2-19b Pl 11 39 50.4804464997 +00 36 12.877309991           ~ 26 0
4 PSR B1257+12 Psr 13 00 03.1075 +12 40 55.155           ~ 502 1
5 Kepler-132 Ro* 18 52 56.5641599064 +41 20 34.997513460   12.49 11.92     ~ 80 0
6 BD+46 2629 Er* 19 07 53.104944 +46 52 06.00420   10.12 9.70 9.80   A0 143 0
7 Kepler-372c Pl 19 25 01.4897001781 +49 15 32.293409690           ~ 19 0

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2022.09.27-17:09:05

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