NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf

Liam Raynard; Michael R. Goad; Edward Gillen; Louise D. Nielsen; Christopher A. Watson; Andrew P. G. Thompson; James McCormac; Daniel Bayliss; Maritza Soto; Szilard Csizmadia; Alexander Chaushev; Matthew R. Burleigh; Richard Alexander; David J. Armstrong; François Bouchy; Joshua T. Briegal; Juan Cabrera; Sarah L. Casewell; Bruno Chazelas; Benjamin F. Cooke; Philipp Eigmüller; Anders Erikson; Boris T. Gänsicke; Andrew Grange; Maximilian N. Günther; Simon T. Hodgkin; Matthew J. Hooton; James S. Jenkins; Gregory Lambert; Tom Louden; Lionel Metrailler; Maximiliano Moyano; Don Pollacco; Katja Poppenhaeger; Didier Queloz; Roberto Raddi; Heike Rauer; Andrew M. Read; Barry Smalley; Alexis M. S. Smith; Oliver Turner; Stéphane Udry; Simon R. Walker; Richard G. West; Peter J. Wheatley

doi:10.1093/mnras/sty2581

NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf

Liam Raynard
, Michael R. Goad
, Edward Gillen
, Louise D. Nielsen
, Christopher A. Watson
, Andrew P. G. Thompson
, James McCormac
, Daniel Bayliss
, Maritza Soto
, Szilard Csizmadia
, Alexander Chaushev
, Matthew R. Burleigh
, Richard Alexander
, David J. Armstrong
, François Bouchy
, Joshua T. Briegal
, Juan Cabrera
, Sarah L. Casewell
, Bruno Chazelas
, Benjamin F. Cooke

Philipp Eigmüller, Anders Erikson, Boris T. Gänsicke, Andrew Grange, Maximilian N. Günther, Simon T. Hodgkin, Matthew J. Hooton, James S. Jenkins, Gregory Lambert, Tom Louden, Lionel Metrailler, Maximiliano Moyano, Don Pollacco, Katja Poppenhaeger, Didier Queloz, Roberto Raddi, Heike Rauer, Andrew M. Read, Barry Smalley, Alexis M. S. Smith, Oliver Turner, Stéphane Udry, Simon R. Walker, Richard G. West, Peter J. Wheatley

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Abstract

We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478^{+94}_{-89} K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51 d orbit with mass 0.74^{+0.13}_{-0.12}MJ, radius 1.595^{+0.047}_{-0.045}RJ, and density 0.226^{+0.040}_{-0.038} g cm-3; therefore one of the lowest density exoplanets currently known. With a relatively deep 1.0{{ per cent}} transit around a bright V = 10.96 host star, NGTS-2b is a prime target for probing giant planet composition via atmospheric transmission spectroscopy. The rapid rotation (v sin i = 15.2 ± 0.8 km s-1) also makes this system an excellent candidate for Rossiter-McLaughlin follow-up observations, to measure the sky-projected stellar obliquity. NGTS-2b was confirmed without the need for follow-up photometry, due to the high precision of the NGTS photometry.

Original language	English
Pages (from-to)	4960-4970
Journal	Monthly Notices of the Royal Astronomical Society
Volume	481
Issue number	4
Early online date	20 Sept 2018
DOIs	https://doi.org/10.1093/mnras/sty2581
Publication status	Published - 01 Dec 2018

Keywords

planets and satellites: detection
planets and satellites: fundamental parameters

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10.1093/mnras/sty2581Licence: Unspecified

NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf
Copyright 2018 The Author(s)Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Final published version, 2.03 MBLicence: Unspecified

http://adsabs.harvard.edu/abs/2018MNRAS.481.4960R

Sniffing the skies of new worlds: characterising the atmospheres of extrasolar planets using ground-based secondary eclipse observations
Hooton, M. (Author), Watson, C. (Supervisor), Dec 2019
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Raynard, L., Goad, M. R., Gillen, E., Nielsen, L. D., Watson, C. A., Thompson, A. P. G., McCormac, J., Bayliss, D., Soto, M., Csizmadia, S., Chaushev, A., Burleigh, M. R., Alexander, R., Armstrong, D. J., Bouchy, F., Briegal, J. T., Cabrera, J., Casewell, S. L., Chazelas, B., ... Wheatley, P. J. (2018). NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf. Monthly Notices of the Royal Astronomical Society, 481(4), 4960-4970. https://doi.org/10.1093/mnras/sty2581

@article{6ad19622d99d412c889962e303386788,

title = "NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf",

abstract = "We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478\textasciicircum{}\{+94\}\_\{-89\} K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51 d orbit with mass 0.74\textasciicircum{}\{+0.13\}\_\{-0.12\}MJ, radius 1.595\textasciicircum{}\{+0.047\}\_\{-0.045\}RJ, and density 0.226\textasciicircum{}\{+0.040\}\_\{-0.038\} g cm-3; therefore one of the lowest density exoplanets currently known. With a relatively deep 1.0\{\{ per cent\}\} transit around a bright V = 10.96 host star, NGTS-2b is a prime target for probing giant planet composition via atmospheric transmission spectroscopy. The rapid rotation (v sin i = 15.2 ± 0.8 km s-1) also makes this system an excellent candidate for Rossiter-McLaughlin follow-up observations, to measure the sky-projected stellar obliquity. NGTS-2b was confirmed without the need for follow-up photometry, due to the high precision of the NGTS photometry.",

keywords = "planets and satellites: detection, planets and satellites: fundamental parameters",

author = "Liam Raynard and Goad, \{Michael R.\} and Edward Gillen and Nielsen, \{Louise D.\} and Watson, \{Christopher A.\} and Thompson, \{Andrew P. G.\} and James McCormac and Daniel Bayliss and Maritza Soto and Szilard Csizmadia and Alexander Chaushev and Burleigh, \{Matthew R.\} and Richard Alexander and Armstrong, \{David J.\} and Fran{\c c}ois Bouchy and Briegal, \{Joshua T.\} and Juan Cabrera and Casewell, \{Sarah L.\} and Bruno Chazelas and Cooke, \{Benjamin F.\} and Philipp Eigm{\"u}ller and Anders Erikson and G{\"a}nsicke, \{Boris T.\} and Andrew Grange and G{\"u}nther, \{Maximilian N.\} and Hodgkin, \{Simon T.\} and Hooton, \{Matthew J.\} and Jenkins, \{James S.\} and Gregory Lambert and Tom Louden and Lionel Metrailler and Maximiliano Moyano and Don Pollacco and Katja Poppenhaeger and Didier Queloz and Roberto Raddi and Heike Rauer and Read, \{Andrew M.\} and Barry Smalley and Smith, \{Alexis M. S.\} and Oliver Turner and St{\'e}phane Udry and Walker, \{Simon R.\} and West, \{Richard G.\} and Wheatley, \{Peter J.\}",

year = "2018",

month = dec,

day = "1",

doi = "10.1093/mnras/sty2581",

language = "English",

volume = "481",

pages = "4960--4970",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Raynard, L, Goad, MR, Gillen, E, Nielsen, LD, Watson, CA, Thompson, APG, McCormac, J, Bayliss, D, Soto, M, Csizmadia, S, Chaushev, A, Burleigh, MR, Alexander, R, Armstrong, DJ, Bouchy, F, Briegal, JT, Cabrera, J, Casewell, SL, Chazelas, B, Cooke, BF, Eigmüller, P, Erikson, A, Gänsicke, BT, Grange, A, Günther, MN, Hodgkin, ST, Hooton, MJ, Jenkins, JS, Lambert, G, Louden, T, Metrailler, L, Moyano, M, Pollacco, D, Poppenhaeger, K, Queloz, D, Raddi, R, Rauer, H, Read, AM, Smalley, B, Smith, AMS, Turner, O, Udry, S, Walker, SR, West, RG & Wheatley, PJ 2018, 'NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf', Monthly Notices of the Royal Astronomical Society, vol. 481, no. 4, pp. 4960-4970. https://doi.org/10.1093/mnras/sty2581

TY - JOUR

T1 - NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf

AU - Raynard, Liam

AU - Goad, Michael R.

AU - Gillen, Edward

AU - Nielsen, Louise D.

AU - Watson, Christopher A.

AU - Thompson, Andrew P. G.

AU - McCormac, James

AU - Bayliss, Daniel

AU - Soto, Maritza

AU - Csizmadia, Szilard

AU - Chaushev, Alexander

AU - Burleigh, Matthew R.

AU - Alexander, Richard

AU - Armstrong, David J.

AU - Bouchy, François

AU - Briegal, Joshua T.

AU - Cabrera, Juan

AU - Casewell, Sarah L.

AU - Chazelas, Bruno

AU - Cooke, Benjamin F.

AU - Eigmüller, Philipp

AU - Erikson, Anders

AU - Gänsicke, Boris T.

AU - Grange, Andrew

AU - Günther, Maximilian N.

AU - Hodgkin, Simon T.

AU - Hooton, Matthew J.

AU - Jenkins, James S.

AU - Lambert, Gregory

AU - Louden, Tom

AU - Metrailler, Lionel

AU - Moyano, Maximiliano

AU - Pollacco, Don

AU - Poppenhaeger, Katja

AU - Queloz, Didier

AU - Raddi, Roberto

AU - Rauer, Heike

AU - Read, Andrew M.

AU - Smalley, Barry

AU - Smith, Alexis M. S.

AU - Turner, Oliver

AU - Udry, Stéphane

AU - Walker, Simon R.

AU - West, Richard G.

AU - Wheatley, Peter J.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478^{+94}_{-89} K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51 d orbit with mass 0.74^{+0.13}_{-0.12}MJ, radius 1.595^{+0.047}_{-0.045}RJ, and density 0.226^{+0.040}_{-0.038} g cm-3; therefore one of the lowest density exoplanets currently known. With a relatively deep 1.0{{ per cent}} transit around a bright V = 10.96 host star, NGTS-2b is a prime target for probing giant planet composition via atmospheric transmission spectroscopy. The rapid rotation (v sin i = 15.2 ± 0.8 km s-1) also makes this system an excellent candidate for Rossiter-McLaughlin follow-up observations, to measure the sky-projected stellar obliquity. NGTS-2b was confirmed without the need for follow-up photometry, due to the high precision of the NGTS photometry.

AB - We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478^{+94}_{-89} K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51 d orbit with mass 0.74^{+0.13}_{-0.12}MJ, radius 1.595^{+0.047}_{-0.045}RJ, and density 0.226^{+0.040}_{-0.038} g cm-3; therefore one of the lowest density exoplanets currently known. With a relatively deep 1.0{{ per cent}} transit around a bright V = 10.96 host star, NGTS-2b is a prime target for probing giant planet composition via atmospheric transmission spectroscopy. The rapid rotation (v sin i = 15.2 ± 0.8 km s-1) also makes this system an excellent candidate for Rossiter-McLaughlin follow-up observations, to measure the sky-projected stellar obliquity. NGTS-2b was confirmed without the need for follow-up photometry, due to the high precision of the NGTS photometry.

KW - planets and satellites: detection

KW - planets and satellites: fundamental parameters

U2 - 10.1093/mnras/sty2581

DO - 10.1093/mnras/sty2581

M3 - Article

SN - 0035-8711

VL - 481

SP - 4960

EP - 4970

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf

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Student theses

Sniffing the skies of new worlds: characterising the atmospheres of extrasolar planets using ground-based secondary eclipse observations

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