WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

M. Lendl; D.~R. Anderson; A. Collier-Cameron; A.~P. Doyle; M. Gillon; C. Hellier; E. Jehin; T.~A. Lister; P.~F.~L. Maxted; F. Pepe; D. Pollacco; D. Queloz; B. Smalley; D. Ségransan; A.~M.~S. Smith; A.~H.~M.~J. Triaud; S. Udry; R.~G. West; P.~J. Wheatley

doi:10.1051/0004-6361/201219585

WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

M. Lendl, D.~R. Anderson, A. Collier-Cameron, A.~P. Doyle, M. Gillon, C. Hellier, E. Jehin, T.~A. Lister, P.~F.~L. Maxted, F. Pepe, D. Pollacco, D. Queloz, B. Smalley, D. Ségransan, A.~M.~S. Smith, A.~H.~M.~J. Triaud, S. Udry, R.~G. West, P.~J. Wheatley

Physics and Astronomy

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Abstract

We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 plusmn 0.035 M$_J$ planet orbiting a K1 star at a separation of 0.0548 plusmn 0.0017 AU with a period of 4.9816872 plusmn 7.3 times 10$^-6$ days. The radius of WASP-42 b is 1.080 plusmn 0.057 R$_J$ while its equilibrium temperature is T$_eq$ = 995 plusmn 34 K. We detect some evidence for a small but non-zero eccentricity of e = 0.060 plusmn 0.013. WASP-49 b is a 0.378 plusmn 0.027 M$_J$ planet around an old G6 star. It has a period of 2.7817387 plusmn 5.6 times 10$^-6$ days and a separation of 0.0379 plusmn 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 plusmn 0.047 R$_J$ and an equilibrium temperature of T$_eq$ = 1369 plusmn 39 K. Both planets have been followed up photometrically, and in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes. Based on photometric observations made with WASP-South, EulerCam on the Euler-Swiss telescope, the Belgian TRAPPIST telescope, the Faulkes South Telescope and spectroscopic observations obtained with CORALIE on the Euler-Swiss telescope and HARPS on the ESO 3.6 m telescope (Prog. ID: 087.C-0649).The photometric time series and radial velocity data in this work are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/544/A72

Original language	English
Pages (from-to)	A72
Journal	Astronomy and Astrophysics
Volume	544
DOIs	https://doi.org/10.1051/0004-6361/201219585
Publication status	Published - 1 Aug 2012

Keywords

planetary systems, methods: observational, techniques: photometric, techniques: spectroscopic, stars: individual: WASP-42, stars: individual: WASP-49

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10.1051/0004-6361/201219585

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Lendl, M., Anderson, D. R., Collier-Cameron, A., Doyle, A. P., Gillon, M., Hellier, C., Jehin, E., Lister, T. A., Maxted, P. F. L., Pepe, F., Pollacco, D., Queloz, D., Smalley, B., Ségransan, D., Smith, A. M. S., Triaud, A. H. M. J., Udry, S., West, R. G., & Wheatley, P. J. (2012). WASP-42 b and WASP-49 b: two new transiting sub-Jupiters. Astronomy and Astrophysics, 544, A72. https://doi.org/10.1051/0004-6361/201219585

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title = "WASP-42 b and WASP-49 b: two new transiting sub-Jupiters",

abstract = "We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 plusmn 0.035 M$_J$ planet orbiting a K1 star at a separation of 0.0548 plusmn 0.0017 AU with a period of 4.9816872 plusmn 7.3 times 10$^-6$ days. The radius of WASP-42 b is 1.080 plusmn 0.057 R$_J$ while its equilibrium temperature is T$_eq$ = 995 plusmn 34 K. We detect some evidence for a small but non-zero eccentricity of e = 0.060 plusmn 0.013. WASP-49 b is a 0.378 plusmn 0.027 M$_J$ planet around an old G6 star. It has a period of 2.7817387 plusmn 5.6 times 10$^-6$ days and a separation of 0.0379 plusmn 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 plusmn 0.047 R$_J$ and an equilibrium temperature of T$_eq$ = 1369 plusmn 39 K. Both planets have been followed up photometrically, and in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes. Based on photometric observations made with WASP-South, EulerCam on the Euler-Swiss telescope, the Belgian TRAPPIST telescope, the Faulkes South Telescope and spectroscopic observations obtained with CORALIE on the Euler-Swiss telescope and HARPS on the ESO 3.6 m telescope (Prog. ID: 087.C-0649).The photometric time series and radial velocity data in this work are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/544/A72 ",

keywords = "planetary systems, methods: observational, techniques: photometric, techniques: spectroscopic, stars: individual: WASP-42, stars: individual: WASP-49",

author = "M. Lendl and D.~R. Anderson and A. Collier-Cameron and A.~P. Doyle and M. Gillon and C. Hellier and E. Jehin and T.~A. Lister and P.~F.~L. Maxted and F. Pepe and D. Pollacco and D. Queloz and B. Smalley and D. S{\'e}gransan and A.~M.~S. Smith and A.~H.~M.~J. Triaud and S. Udry and R.~G. West and P.~J. Wheatley",

year = "2012",

month = aug,

day = "1",

doi = "10.1051/0004-6361/201219585",

language = "English",

volume = "544",

pages = "A72",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

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Lendl, M, Anderson, DR, Collier-Cameron, A, Doyle, AP, Gillon, M, Hellier, C, Jehin, E, Lister, TA, Maxted, PFL, Pepe, F, Pollacco, D, Queloz, D, Smalley, B, Ségransan, D, Smith, AMS, Triaud, AHMJ, Udry, S, West, RG & Wheatley, PJ 2012, 'WASP-42 b and WASP-49 b: two new transiting sub-Jupiters', Astronomy and Astrophysics, vol. 544, pp. A72. https://doi.org/10.1051/0004-6361/201219585

TY - JOUR

T1 - WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

AU - Lendl, M.

AU - Anderson, D.~R.

AU - Collier-Cameron, A.

AU - Doyle, A.~P.

AU - Gillon, M.

AU - Hellier, C.

AU - Jehin, E.

AU - Lister, T.~A.

AU - Maxted, P.~F.~L.

AU - Pepe, F.

AU - Pollacco, D.

AU - Queloz, D.

AU - Smalley, B.

AU - Ségransan, D.

AU - Smith, A.~M.~S.

AU - Triaud, A.~H.~M.~J.

AU - Udry, S.

AU - West, R.~G.

AU - Wheatley, P.~J.

PY - 2012/8/1

Y1 - 2012/8/1

N2 - We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 plusmn 0.035 M$_J$ planet orbiting a K1 star at a separation of 0.0548 plusmn 0.0017 AU with a period of 4.9816872 plusmn 7.3 times 10$^-6$ days. The radius of WASP-42 b is 1.080 plusmn 0.057 R$_J$ while its equilibrium temperature is T$_eq$ = 995 plusmn 34 K. We detect some evidence for a small but non-zero eccentricity of e = 0.060 plusmn 0.013. WASP-49 b is a 0.378 plusmn 0.027 M$_J$ planet around an old G6 star. It has a period of 2.7817387 plusmn 5.6 times 10$^-6$ days and a separation of 0.0379 plusmn 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 plusmn 0.047 R$_J$ and an equilibrium temperature of T$_eq$ = 1369 plusmn 39 K. Both planets have been followed up photometrically, and in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes. Based on photometric observations made with WASP-South, EulerCam on the Euler-Swiss telescope, the Belgian TRAPPIST telescope, the Faulkes South Telescope and spectroscopic observations obtained with CORALIE on the Euler-Swiss telescope and HARPS on the ESO 3.6 m telescope (Prog. ID: 087.C-0649).The photometric time series and radial velocity data in this work are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/544/A72

AB - We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 plusmn 0.035 M$_J$ planet orbiting a K1 star at a separation of 0.0548 plusmn 0.0017 AU with a period of 4.9816872 plusmn 7.3 times 10$^-6$ days. The radius of WASP-42 b is 1.080 plusmn 0.057 R$_J$ while its equilibrium temperature is T$_eq$ = 995 plusmn 34 K. We detect some evidence for a small but non-zero eccentricity of e = 0.060 plusmn 0.013. WASP-49 b is a 0.378 plusmn 0.027 M$_J$ planet around an old G6 star. It has a period of 2.7817387 plusmn 5.6 times 10$^-6$ days and a separation of 0.0379 plusmn 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 plusmn 0.047 R$_J$ and an equilibrium temperature of T$_eq$ = 1369 plusmn 39 K. Both planets have been followed up photometrically, and in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes. Based on photometric observations made with WASP-South, EulerCam on the Euler-Swiss telescope, the Belgian TRAPPIST telescope, the Faulkes South Telescope and spectroscopic observations obtained with CORALIE on the Euler-Swiss telescope and HARPS on the ESO 3.6 m telescope (Prog. ID: 087.C-0649).The photometric time series and radial velocity data in this work are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/544/A72

KW - planetary systems, methods: observational, techniques: photometric, techniques: spectroscopic, stars: individual: WASP-42, stars: individual: WASP-49

U2 - 10.1051/0004-6361/201219585

DO - 10.1051/0004-6361/201219585

M3 - Article

SN - 0004-6361

VL - 544

SP - A72

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

WASP-42 b and WASP-49 b: two new transiting sub-Jupiters

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Keywords

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