MOPSS. I. Flat Optical Spectra for the Hot Jupiters WASP-4 b and WASP-52b

被引：19

作者：

May, E. M. ^{[1
]}

Zhao, M. ^{[2
]}

Haidar, M. ^{[1
]}

Rauscher, E. ^{[1
]}

Monnier, J. D. ^{[1
]}

机构：

[1] Univ Michigan, 1085 S Univ 311 West Hall, Ann Arbor, MI 48109 USA

[2] Penn State Univ, 525 Davey Lab, University Pk, PA 16802 USA

来源：

ASTRONOMICAL JOURNAL | 2018年 / 156卷 / 03期

关键词：

planets and satellites: atmospheres; planets and satellites: composition; planets and satellites: gaseous planets; planets and satellites: individual (WASP-52b; WASP-4b); starspots; EXOPLANET; ATMOSPHERE; MODEL;

D O I：

10.3847/1538-3881/aad4a8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first results from MOPSS, The Michigan Optical Planetary Spectra Survey, aimed at creating a database of optical planetary transmission spectra all observed, reduced, and analyzed with a uniform method for the benefit of enabling comparative exoplanet studies. We discuss our methods, and present results for our first two targets observed with the Magellan Baade 6.5 m telescope, one transit of the Hot Jupiter WASP-4b and two transits of the Hot Saturn WASP-52b. Both targets present flat, featureless spectra, corresponding to the presence of aerosols. We find that the cloud decks must begin no lower than 10(-4) bar for both planets. For WASP-52b, we also consider the effects of star spots on the transmission spectrum, including unocculted spots and spots on the stellar limb influencing the light curve limb-darkening parameters. We discuss the usefulness of this program in the coming James Webb Space Telescope era.

引用

页数：14

共 44 条

[1]

[Anonymous], 2001, SciPy: Open source scientific tools for Python

[2] spotrod: a semi-analytic model for transits of spotted stars [J].

Beky, Bence ;

Kipping, David M. ;

Holman, Matthew J. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 442 (04) :3686-3699

[3]

Carnall A. C, 2017, ARXIV170505165

[4] The GTC exoplanet transit spectroscopy survey VI. Detection of sodium in WASP-52b's cloudy atmosphere [J].

Chen, G. ;

Palle, E. ;

Nortmann, L. ;

Murgas, F. ;

Parviainen, H. ;

Nowak, G. .

ASTRONOMY & ASTROPHYSICS, 2017, 600

[5] The GTC exoplanet transit spectroscopy survey V. A spectrally-resolved Rayleigh scattering slope in GJ 3470b [J].

Chen, G. ;

Guenther, E. W. ;

Palle, E. ;

Nortmann, L. ;

Nowak, G. ;

Kunz, S. ;

Parviainen, H. ;

Murgas, F. .

ASTRONOMY & ASTROPHYSICS, 2017, 600

[6] Gravity and limb-darkening coefficients for the Kepler, CoRoT, Spitzer, uvby, UBVRIJHK, and Sloan photometric systems [J].

Claret, A. ;

Bloemen, S. .

ASTRONOMY & ASTROPHYSICS, 2011, 529

[7]

Crossfield I. J. M., 2017, ARXIV170800016

[8] Accurate spectroscopic parameters of WASP planet host stars [J].

Doyle, Amanda P. ;

Smalley, B. ;

Maxted, P. F. L. ;

Anderson, D. R. ;

Cameron, A. Collier ;

Gillon, M. ;

Hellier, C. ;

Pollacco, D. ;

Queloz, D. ;

Triaud, A. H. M. J. ;

West, R. G. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 428 (04) :3164-3172

[9] Near-infrared transmission spectrum of the warm-Uranus GJ 3470b with the Wide Field Camera-3 on the Hubble Space Telescope [J].

Ehrenreich, D. ;

Bonfils, X. ;

Lovis, C. ;

Delfosse, X. ;

Forveille, T. ;

Mayor, M. ;

Neves, V. ;

Santos, N. C. ;

Udry, S. ;

Segransan, D. .

ASTRONOMY & ASTROPHYSICS, 2014, 570

[10] Rayleigh scattering in the transit spectrum of HD189733b [J].

Etangs, A. Lecavelier des ;

Pont, F. ;

Vidal-Madjar, A. ;

Sing, D. .

ASTRONOMY & ASTROPHYSICS, 2008, 481 (02) :L83-L86

← 1 2 3 4 5 →