2013A&A...558A..55M


Query : 2013A&A...558A..55M

2013A&A...558A..55M - Astronomy and Astrophysics, volume 558A, 55-55 (2013/10-1)

HATS-2b: a transiting extrasolar planet orbiting a K-type star showing starspot activity.

MOHLER-FISCHER M., MANCINI L., HARTMAN J.D., BAKOS G.A., PENEV K., BAYLISS D., JORDAN A., CSUBRY Z., ZHOU G., RABUS M., NIKOLOV N., BRAHM R., ESPINOZA N., BUCHHAVE L.A., BEKY B., SUC V., CSAK B., HENNING T., WRIGHT D.J., TINNEY C.G., ADDISON B.C., SCHMIDT B., NOYES R.W., PAPP I., LAZAR J., SARI P. and CONROY P.

Abstract (from CDS):

We report the discovery of HATS-2b, the second transiting extrasolar planet detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a V=13.6mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230±0.0003 AU and with a period of 1.3541 days. The planetary parameters have been robustly determined using a simultaneous fit of the HATSouth, MPG/ESO 2.2m/GROND, Faulkes Telescope South/Spectral transit photometry, and MPG/ESO 2.2m/FEROS, Euler 1.2m/CORALIE, AAT 3.9m/CYCLOPS radial-velocity measurements. HATS-2b has a mass of 1.37±0.16MJ, a radius of 1.14±0.03RJ, and an equilibrium temperature of 1567±30K. The host star has a mass of 0.88±0.04M and a radius of 0.89±0.02R, and it shows starspot activity. We characterized the stellar activity by analyzing two photometric follow-up transit light curves taken with the GROND instrument, both obtained simultaneously in four optical bands (covering the wavelength range of 3860-9520Å). The two light curves contain anomalies compatible with starspots on the photosphere of the host star along the same transit chord.

Abstract Copyright:

Journal keyword(s): planetary systems - techniques: spectroscopic - stars: fundamental parameters - techniques: photometric - stars: individual: HATS-2 - stars: individual: GSC 6665-00236

VizieR on-line data: <Available at CDS (J/A+A/558/A55): hats2_ft.dat hats2_g1.dat hats2_r1.dat hats2_i1.dat hats2_z1.dat hats2_g2.dat hats2_r2.dat hats2_i2.dat hats2_z2.dat>

Simbad objects: 20

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Number of rows : 20
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 WASP-32b Pl 00 15 50.8077849942 +01 12 01.586829951           ~ 32 1
2 WASP-45b Pl 00 20 56.9940389706 -35 59 53.747385579           ~ 30 1
3 HD 283750 BY* 04 36 48.2421502608 +27 07 55.888214520   9.354   7.4   K2.5Ve 264 2
4 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 982 0
5 V* YY Gem BY* 07 34 37.4474327544 +31 52 10.179641496 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 842 0
6 V* LQ Hya BY* 09 32 25.5683895648 -11 11 04.692242760 9.316 8.761 7.891 7.288 6.815 K1Vp 434 0
7 V* V557 Car BY* 10 42 41.5146144624 -64 21 04.333829688   11.26 12.03     G2V 57 0
8 HATS-2 * 11 46 57.3702458424 -22 33 46.817348148   14.53 13.62 13.40   ~ 33 1
9 HATS-2b Pl 11 46 57.3702861837 -22 33 46.816907262           ~ 19 1
10 HD 118100 Er* 13 34 43.2063495866 -08 20 31.338030204 11.578 10.552 9.372 8.602 7.930 K5Ve 335 0
11 V* EK Dra BY* 14 39 00.2104038120 +64 17 29.979649860   8.243 7.604     G1.5V 417 0
12 V* BY Dra BY* 18 33 55.7720712062 +51 43 08.897780286 10.22 9.23   8.733   K4Ve+K7.5Ve 603 0
13 HAT-P-37 * 18 57 11.0562256392 +51 16 08.850467640   13.1 13.23 13.58   ~ 24 1
14 NAME V672 Lyr b Pl 19 04 09.8516024106 +36 37 57.445911611           ~ 321 1
15 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 305 2
16 NGC 6811 OpC 19 37 22 +46 22.7   7.47 6.8     ~ 312 0
17 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 814 1
18 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1029 0
19 V* EV Lac Er* 22 46 49.7312610268 +44 20 02.374381562   11.85 10.26 9.89   M4.0Ve 861 2
20 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1128 1

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2022.09.27-01:20:23

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