2010A&A...519A..98B


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.22CEST13:28:28

2010A&A...519A..98B - Astronomy and Astrophysics, volume 519, A98-98 (2010/9-1)

WASP-21b: a hot-Saturn exoplanet transiting a thick disc star.

BOUCHY F., HEBB L., SKILLEN I., COLLIER CAMERON A., SMALLEY B., UDRY S., ANDERSON D.R., BOISSE I., ENOCH B., HASWELL C.A., HEBRARD G., HELLIER C., JOSHI Y., KANE S.R., MAXTED P.F.L., MAYOR M., MOUTOU C., PEPE F., POLLACCO D., QUELOZ D., SEGRANSAN D., SIMPSON E.K., SMITH A.M.S., STEMPELS H.C., STREET R., TRIAUD A.H.M.J., WEST R.G. and WHEATLEY P.J.

Abstract (from CDS):

We report the discovery of WASP-21b, a new transiting exoplanet discovered by the Wide Angle Search for Planets (WASP) Consortium and established and characterized with the FIES, SOPHIE, CORALIE and HARPS fiber-fed echelle spectrographs. A 4.3-d period, 1.1% transit depth and 3.4-h duration are derived for WASP-21b using SuperWASP-North and high precision photometric observations at the Liverpool Telescope. Simultaneous fitting to the photometric and radial velocity data with a Markov Chain Monte Carlo procedure leads to a planet in the mass regime of Saturn. With a radius of 1.07RJup and mass of 0.30MJup, WASP-21b has a density close to 0.24ρJup corresponding to the distribution peak at low density of transiting gaseous giant planets. With a host star metallicity [Fe/H] of -0.46, WASP-21b strengthens the correlation between planetary density and host star metallicity for the five known Saturn-like transiting planets. Furthermore there are clear indications that WASP-21b is the first transiting planet belonging to the thick disc.

Abstract Copyright:

Journal keyword(s): planetary systems - techniques: photometric - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/519/A98): table1.dat table2.dat table3.dat>

Simbad objects: 10

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Number of rows : 10

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 WASP-1 V* 00 20 40.0746033057 +31 59 23.953709844   12.06 11.31     F7V 105 1
2 NAME OGLE-TR-113b Pl 10 52 24.2808297652 -61 26 48.845891762           ~ 111 1
3 HAT-P-12b Pl 13 57 33.4668502171 +43 29 36.602501754           ~ 122 1
4 HD 149026b Pl 16 30 29.6184841164 +38 20 50.310893575           ~ 298 1
5 BD+35 3293 V* 18 34 31.6255913635 +35 39 41.489193276   11.07 10.63 10.52   F7V 109 1
6 CoRoT-8b Pl 19 26 21.2426686221 +01 25 35.178176730           ~ 43 1
7 HD 197286b Pl 20 44 10.2207500229 -39 13 30.859306335           ~ 50 1
8 WASP-21b Pl 23 09 58.2534148377 +18 23 45.882492621           ~ 40 1
9 WASP-21 * 23 09 58.2534148377 +18 23 45.882492621   12.12 11.55 11.52   G3V 38 1
10 CD-40 15273b Pl 23 51 31.0840161955 -39 54 24.259966546           ~ 49 1

    Equat.    Gal    SGal    Ecl

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2020.09.22-13:28:28

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