2017MNRAS.468.3907K

Query : 2017MNRAS.468.3907K

2017MNRAS.468.3907K - Mon. Not. R. Astron. Soc., 468, 3907-3916 (2017/July-2)

Rayleigh scattering in the transmission spectrum of HAT-P-18b.

KIRK J., WHEATLEY P.J., LOUDEN T., DOYLE A.P., SKILLEN I., McCORMAC J., IRWIN P.G.J. and KARJALAINEN R.

Abstract (from CDS):

We have performed ground-based transmission spectroscopy of the hot Jupiter HAT-P-18b using the ACAM instrument on the William Herschel Telescope (WHT). Differential spectroscopy over an entire night was carried out at a resolution of R ≃ 400 using a nearby comparison star. We detect a blueward slope extending across our optical transmission spectrum that runs from 4750 to 9250 Å. The slope is consistent with Rayleigh scattering at the equilibrium temperature of the planet (852 K). We do not detect enhanced sodium absorption, which indicates that a high-altitude haze is masking the feature and giving rise to the Rayleigh slope. This is only the second discovery of a Rayleigh-scattering slope in a hot Jupiter atmosphere from the ground, and our study illustrates how ground-based observations can provide transmission spectra with precision comparable to the Hubble Space Telescope.

Journal keyword(s): methods: observational - techniques: spectroscopic - planets and satellites: atmospheres - planets and satellites: individual: HAT-P-18b - planets and satellites: individual: HAT-P-18b

VizieR on-line data: <Available at CDS (J/MNRAS/468/3907): table1.dat>

Simbad objects: 12

Full paper

View the references in ADS

Number of rows : 12

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	WASP-12b	Pl	06 30 32.7966788910	+29 40 20.266334158					G0	728	1
2	WASP-31b	Pl	11 17 45.3578468391	-19 03 17.216528280					~	121	1
3	HAT-P-12b	Pl	13 57 33.4668726399	+43 29 36.601508739					~	167	1
4	HAT-P-12	PM*	13 57 33.4668726399	+43 29 36.601508739	12.6	12.84			K5	79	1
5	WASP-39	*	14 29 18.4151689656	-03 26 40.204480380	12.93	12.09	12.17	11.29	~	56	1
6	WASP-39b	Pl	14 29 18.4151765921	-03 26 40.203046112					~	159	1
7	TYC 2594-731-1	*	17 05 08.5177481520	+33 02 19.533842844	12.62	11.36			~	4	0
8	HAT-P-18	*	17 05 23.1475097496	+33 00 44.940001716	11.9		12.61		K2V	50	1
9	HAT-P-18b	Pl	17 05 23.1475847690	+33 00 44.939145027					~	105	1
10	HD 189733b	Pl	20 00 43.7130382888	+22 42 39.071811263					~	1373	1
11	HD 209458b	Pl	22 03 10.7729598762	+18 53 03.548248479					~	1799	1
12	WASP-6b	Pl	23 12 37.7368657624	-22 40 26.277489164					~	129	1

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