skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on August 27, 2020

Title: NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf

Abstract

ABSTRACT We report the discovery of a new ultrashort period hot Jupiter from the Next Generation Transit Survey. NGTS-6b orbits its star with a period of 21.17 h, and has a mass and radius of $$1.330^{+0.024}_{-0.028}$$MJ and $$1.271^{+0.197}_{-0.188}$$RJ, respectively, returning a planetary bulk density of $$0.711^{+0.214}_{-0.136}$$ g cm−3. Conforming to the currently known small population of ultrashort period hot Jupiters, the planet appears to orbit a metal-rich star ([Fe/H] = +0.11 ± 0.09 dex). Photoevaporation models suggest the planet should have lost 5 per cent of its gaseous atmosphere over the course of the 9.6 Gyr of evolution of the system. NGTS-6b adds to the small, but growing list of ultrashort period gas giant planets, and will help us to understand the dominant formation and evolutionary mechanisms that govern this population.

Authors:
 [1];  [2];  [3];  [4]; ORCiD logo [5];  [6];  [3];  [7];  [3];  [8];  [3];  [9];  [7]; ORCiD logo [8];  [8];  [8];  [5];  [7]; ORCiD logo [10];  [3] more »; ORCiD logo [7];  [7]; ORCiD logo [7];  [7];  [11]; ORCiD logo [6];  [7];  [12];  [13]; ORCiD logo [3];  [8];  [14];  [3];  [8]; ORCiD logo [6];  [6];  [5];  [12]; ORCiD logo [7]; ORCiD logo [7] « less
  1. Departamento de Astronomía, Universidad de Chile, Casilla 36-D, 7591245, Santiago, Chile
  2. Departamento de Astronomía, Universidad de Chile, Casilla 36-D, 7591245, Santiago, Chile, Centro de Astrofísica y Tecnologías Afines (CATA), Casilla 36-D, 7591245, Santiago, Chile
  3. Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
  4. Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK
  5. Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
  6. Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland
  7. Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK, Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
  8. Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, D-12489 Berlin, Germany
  9. Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany
  10. Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
  11. Instituto de Astronomía, Universidad Católica del Norte, Angamos 0610, 1270709 Antofagasta, Chile
  12. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK
  13. Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, D-12489 Berlin, Germany, Center for Astronomy and Astrophysics, TU Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany, Institute of Geological Sciences, FU Berlin, Malteserstr. 74-100, D-12249 Berlin, Germany
  14. School of Physics and Astronomy, Queen Mary University, 327 Mile End Road, London E1 4NS, UK
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1562558
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 489 Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Vines, Jose I., Jenkins, James S., Acton, Jack S., Briegal, Joshua, Bayliss, Daniel, Bouchy, François, Belardi, Claudia, Bryant, Edward M., Burleigh, Matthew R., Cabrera, Juan, Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Csizmadia, Szilárd, Eigmüller, Philipp, Erikson, Anders, Foxell, Emma, Gill, Samuel, Gillen, Edward, Goad, Michael R., Jackman, James A. G., King, George W., Louden, Tom, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D., Pollacco, Don, Queloz, Didier, Rauer, Heike, Raynard, Liam, Smith, Alexis M. S., Soto, Maritza G., Tilbrook, Rosanna H., Titz-Weider, Ruth, Turner, Oliver, Udry, Stéphane, Walker, Simon R., Watson, Christopher A., West, Richard G., and Wheatley, Peter J. NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf. United Kingdom: N. p., 2019. Web. doi:10.1093/mnras/stz2349.
Vines, Jose I., Jenkins, James S., Acton, Jack S., Briegal, Joshua, Bayliss, Daniel, Bouchy, François, Belardi, Claudia, Bryant, Edward M., Burleigh, Matthew R., Cabrera, Juan, Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Csizmadia, Szilárd, Eigmüller, Philipp, Erikson, Anders, Foxell, Emma, Gill, Samuel, Gillen, Edward, Goad, Michael R., Jackman, James A. G., King, George W., Louden, Tom, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D., Pollacco, Don, Queloz, Didier, Rauer, Heike, Raynard, Liam, Smith, Alexis M. S., Soto, Maritza G., Tilbrook, Rosanna H., Titz-Weider, Ruth, Turner, Oliver, Udry, Stéphane, Walker, Simon R., Watson, Christopher A., West, Richard G., & Wheatley, Peter J. NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf. United Kingdom. doi:10.1093/mnras/stz2349.
Vines, Jose I., Jenkins, James S., Acton, Jack S., Briegal, Joshua, Bayliss, Daniel, Bouchy, François, Belardi, Claudia, Bryant, Edward M., Burleigh, Matthew R., Cabrera, Juan, Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Csizmadia, Szilárd, Eigmüller, Philipp, Erikson, Anders, Foxell, Emma, Gill, Samuel, Gillen, Edward, Goad, Michael R., Jackman, James A. G., King, George W., Louden, Tom, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D., Pollacco, Don, Queloz, Didier, Rauer, Heike, Raynard, Liam, Smith, Alexis M. S., Soto, Maritza G., Tilbrook, Rosanna H., Titz-Weider, Ruth, Turner, Oliver, Udry, Stéphane, Walker, Simon R., Watson, Christopher A., West, Richard G., and Wheatley, Peter J. Tue . "NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf". United Kingdom. doi:10.1093/mnras/stz2349.
@article{osti_1562558,
title = {NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf},
author = {Vines, Jose I. and Jenkins, James S. and Acton, Jack S. and Briegal, Joshua and Bayliss, Daniel and Bouchy, François and Belardi, Claudia and Bryant, Edward M. and Burleigh, Matthew R. and Cabrera, Juan and Casewell, Sarah L. and Chaushev, Alexander and Cooke, Benjamin F. and Csizmadia, Szilárd and Eigmüller, Philipp and Erikson, Anders and Foxell, Emma and Gill, Samuel and Gillen, Edward and Goad, Michael R. and Jackman, James A. G. and King, George W. and Louden, Tom and McCormac, James and Moyano, Maximiliano and Nielsen, Louise D. and Pollacco, Don and Queloz, Didier and Rauer, Heike and Raynard, Liam and Smith, Alexis M. S. and Soto, Maritza G. and Tilbrook, Rosanna H. and Titz-Weider, Ruth and Turner, Oliver and Udry, Stéphane and Walker, Simon R. and Watson, Christopher A. and West, Richard G. and Wheatley, Peter J.},
abstractNote = {ABSTRACT We report the discovery of a new ultrashort period hot Jupiter from the Next Generation Transit Survey. NGTS-6b orbits its star with a period of 21.17 h, and has a mass and radius of $1.330^{+0.024}_{-0.028}$MJ and $1.271^{+0.197}_{-0.188}$RJ, respectively, returning a planetary bulk density of $0.711^{+0.214}_{-0.136}$ g cm−3. Conforming to the currently known small population of ultrashort period hot Jupiters, the planet appears to orbit a metal-rich star ([Fe/H] = +0.11 ± 0.09 dex). Photoevaporation models suggest the planet should have lost 5 per cent of its gaseous atmosphere over the course of the 9.6 Gyr of evolution of the system. NGTS-6b adds to the small, but growing list of ultrashort period gas giant planets, and will help us to understand the dominant formation and evolutionary mechanisms that govern this population.},
doi = {10.1093/mnras/stz2349},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 489,
place = {United Kingdom},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 27, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Kepler-78 and the Ultra-Short-Period planets
journal, November 2018


The Planet‐Metallicity Correlation
journal, April 2005

  • Fischer, Debra A.; Valenti, Jeff
  • The Astrophysical Journal, Vol. 622, Issue 2
  • DOI: 10.1086/428383

ULTRA-SHORT-PERIOD PLANETS IN K2 WITH COMPANIONS: A DOUBLE TRANSITING SYSTEM FOR EPIC 220674823
journal, January 2017


Characterizing and Commissioning the Sutherland High-Speed Optical Cameras (SHOC)
journal, August 2013

  • Coppejans, R.; Gulbis, A. A. S.; Kotze, M. M.
  • Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 930
  • DOI: 10.1086/672156

Gaia Data Release 2 : Summary of the contents and survey properties
journal, August 2018


The coronal X-ray-age relation and its implications for the evaporation of exoplanets: X-ray-age relation and exoplanet evaporation
journal, April 2012

  • Jackson, Alan P.; Davis, Timothy A.; Wheatley, Peter J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 422, Issue 3
  • DOI: 10.1111/j.1365-2966.2012.20657.x

Transiting Exoplanet Survey Satellite
journal, October 2014

  • Ricker, George R.; Winn, Joshua N.; Vanderspek, Roland
  • Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 1, Issue 1
  • DOI: 10.1117/1.JATIS.1.1.014003

On the formation of the Kepler-10 planetary system
journal, August 2014

  • Terquem, Caroline
  • Monthly Notices of the Royal Astronomical Society, Vol. 444, Issue 2
  • DOI: 10.1093/mnras/stu1546

KELT-16b: A Highly Irradiated, Ultra-short Period Hot Jupiter Nearing Tidal Disruption
journal, February 2017

  • Oberst, Thomas E.; Rodriguez, Joseph E.; Colón, Knicole D.
  • The Astronomical Journal, Vol. 153, Issue 3
  • DOI: 10.3847/1538-3881/153/3/97

Planetary evaporation by UV and X-ray radiation: basic hydrodynamics: Planetary evaporation
journal, September 2012


Physical Properties of the 0.94-Day Period Transiting Planetary System Wasp-18
journal, November 2009


The Next Generation Transit Survey (NGTS)
journal, November 2017

  • Wheatley, Peter J.; West, Richard G.; Goad, Michael R.
  • Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 4
  • DOI: 10.1093/mnras/stx2836

Formation of the Giant Planets
journal, August 1980


Photoevaporation and high-eccentricity migration created the sub-Jovian desert
journal, July 2018

  • Owen, James E.; Lai, Dong
  • Monthly Notices of the Royal Astronomical Society, Vol. 479, Issue 4
  • DOI: 10.1093/mnras/sty1760

High-precision photometry by telescope defocusing – VII. The ultrashort period planet WASP-103★
journal, December 2014

  • Southworth, John; Mancini, L.; Ciceri, S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 447, Issue 1
  • DOI: 10.1093/mnras/stu2394

emcee : The MCMC Hammer
journal, March 2013

  • Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
  • Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925
  • DOI: 10.1086/670067

Orbital Decay of hot Jupiters due to Nonlinear Tidal Dissipation Within Solar-Type Hosts
journal, December 2015


The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
journal, February 2018


From hot Jupiters to Super-Earths via Roche lobe Overflow
journal, August 2014

  • Valsecchi, Francesca; Rasio, Frederic A.; Steffen, Jason H.
  • The Astrophysical Journal, Vol. 793, Issue 1
  • DOI: 10.1088/2041-8205/793/1/L3

An Earth-sized planet with an Earth-like density
journal, October 2013

  • Pepe, Francesco; Cameron, Andrew Collier; Latham, David W.
  • Nature, Vol. 503, Issue 7476
  • DOI: 10.1038/nature12768

K2-106, a system containing a metal-rich planet and a planet of lower density
journal, December 2017


The dynamics of a rapidly escaping atmosphere: Applications to the evolution of Earth and Venus
journal, November 1981


WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED
journal, December 2009


Correcting systematic effects in a large set of photometric light curves
journal, February 2005


THE Pan-STARRS1 PHOTOMETRIC SYSTEM
journal, April 2012


NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert
journal, May 2019


NGTS-2b: an inflated hot-Jupiter transiting a bright F-dwarf
journal, September 2018

  • Raynard, Liam; Goad, Michael R.; Gillen, Edward
  • Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 4
  • DOI: 10.1093/mnras/sty2581

Precision Stellar Characterization of FGKM Stars using an Empirical Spectral Library
journal, February 2017

  • Yee, Samuel W.; Petigura, Erik A.; von Braun, Kaspar
  • The Astrophysical Journal, Vol. 836, Issue 1
  • DOI: 10.3847/1538-4357/836/1/77

batman : BAsic Transit Model cAlculatioN in Python
journal, November 2015

  • Kreidberg, Laura
  • Publications of the Astronomical Society of the Pacific, Vol. 127, Issue 957
  • DOI: 10.1086/683602

Dearth of short-period Neptunian exoplanets: A desert in period-mass and period-radius planes
journal, April 2016


Ultra-short-period Planets from Secular Chaos
journal, April 2019

  • Petrovich, Cristobal; Deibert, Emily; Wu, Yanqin
  • The Astronomical Journal, Vol. 157, Issue 5
  • DOI: 10.3847/1538-3881/ab0e0a

The Next Generation Transit Survey (NGTS)
journal, January 2013


The Fourth us Naval Observatory ccd Astrograph Catalog (Ucac4)
journal, January 2013


Kepler Planet-Detection Mission: Introduction and First Results
journal, January 2010


Roche lobe effects on the atmospheric loss from “Hot Jupiters”
journal, July 2007


Less absorbed solar energy and more internal heat for Jupiter
journal, September 2018


Stellar activity of planetary host star HD 189 733
journal, January 2009


A compact system of small planets around a former red-giant star
journal, December 2011

  • Charpinet, S.; Fontaine, G.; Brassard, P.
  • Nature, Vol. 480, Issue 7378
  • DOI: 10.1038/nature10631

The Two Micron All Sky Survey (2MASS)
journal, February 2006

  • Skrutskie, M. F.; Cutri, R. M.; Stiening, R.
  • The Astronomical Journal, Vol. 131, Issue 2
  • DOI: 10.1086/498708

CERES: A Set of Automated Routines for Echelle Spectra
journal, February 2017

  • Brahm, Rafael; Jordán, Andrés; Espinoza, Néstor
  • Publications of the Astronomical Society of the Pacific, Vol. 129, Issue 973
  • DOI: 10.1088/1538-3873/aa5455

Dynamical relaxation and massive extrasolar planets
journal, July 2001


RadVel: The Radial Velocity Modeling Toolkit
journal, March 2018

  • Fulton, Benjamin J.; Petigura, Erik A.; Blunt, Sarah
  • Publications of the Astronomical Society of the Pacific, Vol. 130, Issue 986
  • DOI: 10.1088/1538-3873/aaaaa8

Hot super-Earths stripped by their host stars
journal, April 2016

  • Lundkvist, M. S.; Kjeldsen, H.; Albrecht, S.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms11201

Atmospheric Escape from hot Jupiters
journal, February 2009

  • Murray-Clay, Ruth A.; Chiang, Eugene I.; Murray, Norman
  • The Astrophysical Journal, Vol. 693, Issue 1
  • DOI: 10.1088/0004-637X/693/1/23

A Short-Period Censor of Sub-Jupiter mass Exoplanets with low Density
journal, January 2011


Absence of a Metallicity Effect for Ultra-short-period Planets
journal, July 2017

  • Winn, Joshua N.; Sanchis-Ojeda, Roberto; Rogers, Leslie
  • The Astronomical Journal, Vol. 154, Issue 2
  • DOI: 10.3847/1538-3881/aa7b7c

The stellar metallicity--giant planet connection
journal, February 1997


Gaia Data Release 1 : Summary of the astrometric, photometric, and survey properties
journal, November 2016


Supersaturation on Pluto and elsewhere
journal, September 2018


Planetary Formation Scenarios Revisited: Core‐Accretion versus Disk Instability
journal, June 2007

  • Matsuo, T.; Shibai, H.; Ootsubo, T.
  • The Astrophysical Journal, Vol. 662, Issue 2
  • DOI: 10.1086/517964

NGTS-1b: a hot Jupiter transiting an M-dwarf
journal, November 2017

  • Bayliss, Daniel; Gillen, Edward; Eigmüller, Philipp
  • Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 4
  • DOI: 10.1093/mnras/stx2778

Shrinking Binary and Planetary Orbits by Kozai Cycles with Tidal Friction
journal, November 2007

  • Fabrycky, Daniel; Tremaine, Scott
  • The Astrophysical Journal, Vol. 669, Issue 2
  • DOI: 10.1086/521702

Origins of Eccentric Extrasolar Planets: Testing the Planet‐Planet Scattering Model
journal, October 2008

  • Ford, Eric B.; Rasio, Frederic A.
  • The Astrophysical Journal, Vol. 686, Issue 1
  • DOI: 10.1086/590926

Tidal decay and stable Roche-lobe overflow of short-period gaseous exoplanets
journal, June 2016

  • Jackson, Brian; Jensen, Emily; Peacock, Sarah
  • Celestial Mechanics and Dynamical Astronomy, Vol. 126, Issue 1-3
  • DOI: 10.1007/s10569-016-9704-1

The minimum-mass extrasolar nebula: in situ formation of close-in super-Earths
journal, April 2013

  • Chiang, Eugene; Laughlin, Gregory
  • Monthly Notices of the Royal Astronomical Society, Vol. 431, Issue 4
  • DOI: 10.1093/mnras/stt424

New Low-mass Eclipsing Binary Systems in Praesepe Discovered by K 2
journal, October 2017

  • Gillen, Edward; Hillenbrand, Lynne A.; David, Trevor J.
  • The Astrophysical Journal, Vol. 849, Issue 1
  • DOI: 10.3847/1538-4357/aa84b3

Measuring Reddening with Sloan Digital sky Survey Stellar Spectra and Recalibrating sfd
journal, August 2011


No planet for HD 166435
journal, November 2001


Formation of Earth‐like Planets During and After Giant Planet Migration
journal, May 2007

  • Mandell, Avi M.; Raymond, Sean N.; Sigurdsson, Steinn
  • The Astrophysical Journal, Vol. 660, Issue 1
  • DOI: 10.1086/512759

A STUDY OF THE SHORTEST-PERIOD PLANETS FOUND WITH KEPLER
journal, May 2014

  • Sanchis-Ojeda, Roberto; Rappaport, Saul; Winn, Joshua N.
  • The Astrophysical Journal, Vol. 787, Issue 1
  • DOI: 10.1088/0004-637X/787/1/47

Statistics of long Period gas Giant Planets in Known Planetary Systems
journal, April 2016

  • Bryan, Marta L.; Knutson, Heather A.; Howard, Andrew W.
  • The Astrophysical Journal, Vol. 821, Issue 2
  • DOI: 10.3847/0004-637X/821/2/89

An Earth-sized exoplanet with a Mercury-like composition
journal, March 2018


The TESS Input Catalog and Candidate Target List
journal, August 2018

  • Stassun, Keivan G.; Oelkers, Ryan J.; Pepper, Joshua
  • The Astronomical Journal, Vol. 156, Issue 3
  • DOI: 10.3847/1538-3881/aad050

Dynamical Instabilities and the Formation of Extrasolar Planetary Systems
journal, November 1996


Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system
journal, May 2018

  • Günther, Maximilian N.; Queloz, Didier; Gillen, Edward
  • Monthly Notices of the Royal Astronomical Society, Vol. 478, Issue 4
  • DOI: 10.1093/mnras/sty1193

The Next Generation Transit Survey—Prototyping Phase
journal, January 2017

  • McCormac, J.; Pollacco, D.; Wheatley, P. J.
  • Publications of the Astronomical Society of the Pacific, Vol. 129, Issue 972
  • DOI: 10.1088/1538-3873/129/972/025002

New planetary systems from the Calan–Hertfordshire Extrasolar Planet Search
journal, November 2016

  • Jenkins, J. S.; Jones, H. R. A.; Tuomi, M.
  • Monthly Notices of the Royal Astronomical Society, Vol. 466, Issue 1
  • DOI: 10.1093/mnras/stw2811

Estimating Distance from Parallaxes. IV. Distances to 1.33 Billion Stars in Gaia Data Release 2
journal, July 2018

  • Bailer-Jones, C. A. L.; Rybizki, J.; Fouesneau, M.
  • The Astronomical Journal, Vol. 156, Issue 2
  • DOI: 10.3847/1538-3881/aacb21

Mass, Radius, and Composition of the Transiting Planet 55 Cnc e: Using Interferometry and Correlations—A Quick Update
journal, July 2018

  • Crida, Aurélien; Ligi, Roxanne; Dorn, Caroline
  • Research Notes of the AAS, Vol. 2, Issue 3
  • DOI: 10.3847/2515-5172/aae1f6

The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance
journal, November 2010


A box-fitting algorithm in the search for periodic transits
journal, July 2002


Chemical fingerprints of hot Jupiter planet formation
journal, April 2018


Revealing a Universal Planet–Metallicity Correlation for Planets of Different Sizes Around Solar-Type Stars
journal, December 2014


A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
journal, April 2013


Hats-18b: an Extreme Short-Period Massive Transiting Planet Spinning up its star
journal, October 2016