2011ApJ...742...59H


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.25CET06:56:43

2011ApJ...742...59H - Astrophys. J., 742, 59 (2011/November-3)

HAT-P-32b and HAT-P-33b: two highly inflated hot jupiters transiting high-jitter stars.

HARTMAN J.D., BAKOS G.A., TORRES G., LATHAM D.W., KOVACS G., BEKY B., QUINN S.N., MAZEH T., SHPORER A., MARCY G.W., HOWARD A.W., FISCHER D.A., JOHNSON J.A., ESQUERDO G.A., NOYES R.W., SASSELOV D.D., STEFANIK R.P., FERNANDEZ J.M., SZKLENAR T., LAZAR J., PAPP I. and SARI P.

Abstract (from CDS):

We report the discovery of two exoplanets transiting high-jitter stars. HAT-P-32b orbits the bright V = 11.289 late-F-early-G dwarf star GSC 3281-00800, with a period P = 2.150008±0.000001 d. The stellar and planetary masses and radii depend on the eccentricity of the system, which is poorly constrained due to the high-velocity jitter (∼80 m/s). Assuming a circular orbit, the star has a mass of 1.16±0.04 M and radius of 1.22±0.02 R, while the planet has a mass of 0.860±0.164 MJ and a radius of 1.789±0.025 RJ. The second planet, HAT-P-33b, orbits the bright V = 11.188 late-F dwarf star GSC 2461-00988, with a period P = 3.474474±0.000001 d. As for HAT-P-32, the stellar and planetary masses and radii of HAT-P-33 depend on the eccentricity, which is poorly constrained due to the high jitter (∼50 m/s). In this case, spectral line bisector spans (BSs) are significantly anti-correlated with the radial velocity residuals, and we are able to use this correlation to reduce the residual rms to ∼35 m/s. We find that the star has a mass of 1.38±0.04 M and a radius of 1.64±0.03 R while the planet has a mass of 0.762±0.101 MJand a radius of 1.686±0.045 RJ for an assumed circular orbit. Due to the large BS variations exhibited by both stars we rely on detailed modeling of the photometric light curves to rule out blend scenarios. Both planets are among the largest radii transiting planets discovered to date.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual (HAT-P-32, GSC 3281-00800, HAT-P-33, GSC 2461-00988) - techniques: photometric - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/ApJ/742/59): table3.dat table4.dat table5.dat table6.dat>

Simbad objects: 14

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Number of rows : 14

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 HD 10069b Pl 01 37 25.0335097438 -45 40 40.376513381           ~ 228 1
2 HAT-P-32 * 02 04 10.2775457769 +46 41 16.210382751   11.79 11.44 11.23   ~ 51 1
3 HAT-P-32b Pl 02 04 10.2775457769 +46 41 16.210382751           ~ 89 1
4 WASP-11 ** 03 09 28.5427034552 +30 40 24.868785834   12.58 11.57 11.42   K3V 69 1
5 BD+57 793b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 175 1
6 WASP-12b Pl 06 30 32.7966788910 +29 40 20.266334158           G0 559 1
7 HAT-P-33 * 07 32 44.2170736940 +33 50 06.118002888   11.66 11.03 11.10   ~ 28 1
8 HAT-P-33b Pl 07 32 44.2170736940 +33 50 06.118002888           ~ 32 1
9 HAT-P-21b Pl 11 25 05.9858337926 +41 01 40.669169701           ~ 24 1
10 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 124 1
11 CD-27 10695b Pl 15 59 50.9489706053 -28 03 42.309432433           ~ 200 1
12 HD 147506 * 16 20 36.3579144486 +41 02 53.109043943   9.15 8.69     F8V 140 2
13 HD 147506b Pl 16 20 36.3579144486 +41 02 53.109043943           ~ 214 1
14 TrES-4 Pl 17 53 13.0490781575 +37 12 42.586106196           ~ 182 2

    Equat.    Gal    SGal    Ecl

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2020.10.25-06:56:43

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