2010ApJ...709..159A


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET22:23:18

2010ApJ...709..159A - Astrophys. J., 709, 159-167 (2010/January-3)

Wasp-17b: an ultra-low density planet in a probable retrograde orbit.

ANDERSON D.R., HELLIER C., GILLON M., TRIAUD A.H.M.J., SMALLEY B., HEBB L., COLLIER CAMERON A., MAXTED P.F.L., QUELOZ D., WEST R.G., BENTLEY S.J., ENOCH B., HORNE K., LISTER T.A., MAYOR M., PARLEY N.R., PEPE F., POLLACCO D., SEGRANSAN D., UDRY S. and WILSON D.M.

Abstract (from CDS):

We report the discovery of the transiting giant planet WASP-17b, the least-dense planet currently known. It is 1.6 Saturn masses, but 1.5-2 Jupiter radii, giving a density of 6%-14% that of Jupiter. WASP-17b is in a 3.7 day orbit around a sub-solar metallicity, V = 11.6, F6 star. Preliminary detection of the Rossiter-McLaughlin effect suggests that WASP-17b is in a retrograde orbit (λ ≈ -150°), indicative of a violent history involving planet-planet or star-planet scattering. WASP-17b's bloated radius could be due to tidal heating resulting from recent or ongoing tidal circularization of an eccentric orbit, such as the highly eccentric orbits that typically result from scattering interactions. It will thus be important to determine more precisely the current orbital eccentricity by further high-precision radial velocity measurements or by timing the secondary eclipse, both to reduce the uncertainty on the planet's radius and to test tidal-heating models. Owing to its low surface gravity, WASP-17b's atmosphere has the largest scale height of any known planet, making it a good target for transmission spectroscopy.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: WASP-17

VizieR on-line data: <Available at CDS (J/ApJ/709/159): table1.dat>

Simbad objects: 21

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Number of rows : 21

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 17156b Pl 02 49 44.4866941172 +71 45 11.632197644           ~ 156 1
2 XO-3b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 170 1
3 HD 37605b Pl 05 40 01.7280924476 +06 03 38.074320708           ~ 33 1
4 WASP-12b Pl 06 30 32.7966788910 +29 40 20.266334158           G0 503 1
5 CoRoT-7b Pl 06 43 49.4690410679 -01 03 46.825797768           ~ 334 1
6 HD 80606b Pl 09 22 37.5769478105 +50 36 13.434928660           ~ 268 1
7 WASP-15b Pl 13 55 42.7119654298 -32 09 34.615276547           ~ 54 1
8 HAT-P-12b Pl 13 57 33.4668502171 +43 29 36.602501754           ~ 114 1
9 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 117 1
10 WASP-17b Pl 15 59 50.9489706053 -28 03 42.309432433           ~ 191 1
11 WASP-17 * 15 59 50.9489706053 -28 03 42.309432433   11.83 11.59 11.31 10.92 F4 92 1
12 HD 147506b Pl 16 20 36.3579144486 +41 02 53.109043943           ~ 208 1
13 HD 149026b Pl 16 30 29.6184841164 +38 20 50.310893575           ~ 291 1
14 TrES-4 Pl 17 53 13.0490781575 +37 12 42.586106196           ~ 179 1
15 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 112 1
16 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1036 1
17 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1428 1
18 V* V376 Peg EP* 22 03 10.7729598762 +18 53 03.548248479   8.21 7.63     F9V 979 1
19 HAT-P-1b Pl 22 57 46.8443014981 +38 40 30.355384717           ~ 192 1
20 WASP-6b Pl 23 12 37.7368657624 -22 40 26.277489164           ~ 91 1
21 WASP-4b Pl 23 34 15.0858223039 -42 03 41.049468209           ~ 112 1

    Equat.    Gal    SGal    Ecl

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2020.02.17-22:23:18

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