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1. TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet

Author

Osborn, Ares, Armstrong, David J., Cale, Bryson, Brahm, Rafael, Wittenmyer, Robert A., Dai, Fei, Crossfield, Ian J. M., Bryant, Edward M., Adibekyan, Vardan, Cloutier, Ryan, Collins, Karen A., Mena, E. Delgado, Fridlund, Malcolm, Hellier, Coel, Howell, Steve B., King, George W., Lillo-Box, Jorge, Otegi, Jon, Sousa, S., Stassun, Keivan G., Matthews, Elisabeth C., Ziegler, Carl, Ricker, George, Vanderspek, Roland, Latham, David W., Seager, S., Winn, Joshua N., Jenkins, Jon M., Acton, Jack S., Addison, Brett C., Anderson, David R., Ballard, Sarah, Barrado, David, Barros, Susana C. C., Batalha, Natalie, Bayliss, Daniel, Barclay, Thomas, Benneke, Björn, Berberian Jr., John, Bouchy, Francois, Bowler, Brendan P., Briceño, César, Burke, Christopher J., Burleigh, Matthew R., Casewell, Sarah L., Ciardi, David, Collins, Kevin I., Cooke, Benjamin F., Demangeon, Olivier D. S., Díaz, Rodrigo F., Dorn, C., Dragomir, Diana, Dressing, Courtney, Dumusque, Xavier, Espinoza, Néstor, Figueira, P., Fulton, Benjamin, Furlan, E., Gaidos, E., Geneser, C., Gill, Samuel, Goad, Michael R., Gonzales, Erica J., Gorjian, Varoujan, Günther, Maximilian N., Helled, Ravit, Henderson, Beth A., Henning, Thomas, Hogan, Aleisha, Hojjatpanah, Saeed, Horner, Jonathan, Howard, Andrew W., Hoyer, Sergio, Huber, Dan, Isaacson, Howard, Jenkins, James S., Jensen, Eric L. N., Jordán, Andrés, Kane, Stephen R., Kidwell Jr., Richard C., Kielkopf, John, Law, Nicholas, Lendl, Monika, Lund, M., Matson, Rachel A., Mann, Andrew W., McCormac, James, Mengel, Matthew W., Morales, Farisa Y., Nielsen, Louise D., Okumura, Jack, Osborn, Hugh P., Petigura, Erik A., Plavchan, Peter, Pollacco, Don, Quintana, Elisa V., Raynard, Liam, Robertson, Paul, Rose, Mark E., Roy, Arpita, Reefe, Michael, Santerne, Alexandre, Santos, Nuno C., Sarkis, Paula, Schlieder, J., Schwarz, Richard P., Scott, Nicholas J., Shporer, Avi, Smith, A. M. S., Stibbard, C., Stockdale, Chris, Strøm, Paul A., Twicken, Joseph D., Tan, Thiam-Guan, Tanner, A., Teske, J., Tilbrook, Rosanna H., Tinney, C. G., Udry, Stephane, Villaseñor, Jesus Noel, Vines, Jose I., Wang, Sharon X., Weiss, Lauren M., West, Richard G., Wheatley, Peter J., Wright, Duncan J., Zhang, Hui, and Zohrabi, F.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We present the bright (V$_{mag} = 9.12$), multi-planet system TOI-431, characterised with photometry and radial velocities. We estimate the stellar rotation period to be $30.5 \pm 0.7$ days using archival photometry and radial velocities. TOI-431b is a super-Earth with a period of 0.49 days, a radius of 1.28 $\pm$ 0.04 R$_{\oplus}$, a mass of $3.07 \pm 0.35$ M$_{\oplus}$, and a density of $8.0 \pm 1.0$ g cm$^{-3}$; TOI-431d is a sub-Neptune with a period of 12.46 days, a radius of $3.29 \pm 0.09$ R$_{\oplus}$, a mass of $9.90^{+1.53}_{-1.49}$ M$_{\oplus}$, and a density of $1.36 \pm 0.25$ g cm$^{-3}$. We find a third planet, TOI-431c, in the HARPS radial velocity data, but it is not seen to transit in the TESS light curves. It has an $M \sin i$ of $2.83^{+0.41}_{-0.34}$ M$_{\oplus}$, and a period of 4.85 days. TOI-431d likely has an extended atmosphere and is one of the most well-suited TESS discoveries for atmospheric characterisation, while the super-Earth TOI-431b may be a stripped core. These planets straddle the radius gap, presenting an interesting case-study for atmospheric evolution, and TOI-431b is a prime TESS discovery for the study of rocky planet phase curves., Comment: 21 pages, 11 figures, 3 appendices, accepted for publication in MNRAS

Published
2021
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2. NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey

Author

Tilbrook, Rosanna H., Burleigh, Matthew R., Costes, Jean C., Gill, Samuel, Nielsen, Louise D., Vines, José I., Queloz, Didier, Hodgkin, Simon T., Worters, Hannah L., Goad, Michael R., Acton, Jack S., Henderson, Beth A., Armstrong, David J., Anderson, David R., Bayliss, Daniel, Bouchy, François, Briegal, Joshua T., Bryant, Edward M., Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Eigmüller, Philipp, Gillen, Edward, Günther, Maximilian N., Hogan, Aleisha, Jenkins, James S., Lendl, Monika, McCormac, James, Moyano, Maximiliano, Raynard, Liam, Smith, Alexis M. S., Udry, Stéphane, Watson, Christopher A., West, Richard G., Wheatley, Peter J., Breytenbach, Hannes, Sefako, Ramotholo R., Thomas, Jessymol K., and Alves, Douglas R.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of four new hot Jupiters with the Next Generation Transit Survey (NGTS). NGTS-15b, NGTS-16b, NGTS-17b, and NGTS-18b are short-period ($P<5$d) planets orbiting G-type main sequence stars, with radii and masses between $1.10-1.30$ $R_J$ and $0.41-0.76$ $M_J$. By considering the host star luminosities and the planets' small orbital separations ($0.039-0.052$ AU), we find that all four hot Jupiters are highly irradiated and therefore occupy a region of parameter space in which planetary inflation mechanisms become effective. Comparison with statistical studies and a consideration of the planets' high incident fluxes reveals that NGTS-16b, NGTS-17b, and NGTS-18b are indeed likely inflated, although some disparities arise upon analysis with current Bayesian inflationary models. However, the underlying relationships which govern radius inflation remain poorly understood. We postulate that the inclusion of additional hyperparameters to describe latent factors such as heavy element fraction, as well as the addition of an updated catalogue of hot Jupiters, would refine inflationary models, thus furthering our understanding of the physical processes which give rise to inflated planets., Comment: Accepted for publication in MNRAS

Published
2021
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3. NGTS-13b: A hot 4.8 Jupiter-mass planet transiting a subgiant star

Author

Grieves, Nolan, Nielsen, Louise D., Vines, Jose I., Bryant, Edward M., Gill, Samuel, Bouchy, François, Lendl, Monika, Bayliss, Daniel, Eigmueller, Philipp, Segransan, Damien, Acton, Jack S., Anderson, David R., Burleigh, Matthew R., Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Gillen, Edward, Goad, Michael R., Günther, Maximilian N., Henderson, Beth A., Hogan, Aleisha, Jenkins, James S., Alves, Douglas R., Jordán, Andrés, McCormac, James, Moyano, Maximiliano, Queloz, Didier, Raynard, Liam, Seidel, Julia V., Smith, Alexis M. S., Tilbrook, Rosanna H., Udry, Stephane, West, Richard G., and Wheatley, Peter J.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of the massive hot Jupiter NGTS-13b by the Next Generation Transit Survey (NGTS). The V = 12.7 host star is likely in the subgiant evolutionary phase with log g$_{*}$ = 4.04 $\pm$ 0.05, T$_{eff}$ = 5819 $\pm$ 73 K, M$_{*}$ = 1.30$^{+0.11}_{-0.18}$ M$_{\odot}$, and R$_{*}$ = 1.79 $\pm$ 0.06 R$_{\odot}$. NGTS detected a transiting planet with a period of P = 4.12 days around the star, which was later validated with the Transiting Exoplanet Survey Satellite (TESS; TIC 454069765). We confirm the planet using radial velocities from the CORALIE spectrograph. Using NGTS and TESS full-frame image photometry combined with CORALIE radial velocities we determine NGTS-13b to have a radius of R$_{P}$ = 1.142 $\pm$ 0.046 R$_{Jup}$, mass of M$_{P}$ = 4.84 $\pm$ 0.44 M$_{Jup}$ and eccentricity e = 0.086 $\pm$ 0.034. Some previous studies suggest that $\sim$4 M$_{Jup}$ may be a border between two separate formation scenarios (e.g., core accretion and disk instability) and that massive giant planets share similar formation mechanisms as lower-mass brown dwarfs. NGTS-13b is just above 4 M$_{Jup}$ making it an important addition to the statistical sample needed to understand the differences between various classes of substellar companions. The high metallicity, [Fe/H] = 0.25 $\pm$ 0.17, of NGTS-13 does not support previous suggestions that massive giants are found preferentially around lower metallicity host stars, but NGTS-13b does support findings that more massive and evolved hosts may have a higher occurrence of close-in massive planets than lower-mass unevolved stars., Comment: 11 pages, 9 figures, 4 tables, accepted by Astronomy & Astrophysics

Published
2021
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4. NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit

Author

Bryant, Edward M., Bayliss, Daniel, Nielsen, Louise D., Veras, Dimitri, Acton, Jack S., Anderson, David R., Armstrong, David J., Bouchy, Francois, Briegal, Joshua T., Burleigh, Matthew R., Cabrera, Juan, Casewell, Sarah L., Chaushev, Alexander, Cooke, Benjamin F., Csizmadia, Szilard, Eigmuller, Philipp, Erikson, Anders, Gill, Samuel, Gillen, Edward, Goad, Michael R., Grieves, Nolan, Gunther, Maximilian N., Henderson, Beth, Hogan, Aleisha, Jenkins, James S., Lendl, Monika, McCormac, James, Moyano, Maximiliano, Queloz, Didier, Rauer, Heike, Raynard, Liam, Smith, Alexis M. S., Tilbrook, Rosanna H., Udry, Stephane, Vines, Jose I., Watson, Christopher A., West, Richard G., and Wheatley, Peter J.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of the transiting exoplanet NGTS-12b by the Next Generation Transit Survey (NGTS). The host star, NGTS-12, is a V=12.38 mag star with an effective temperature of T$_{\rm eff}$=$5690\pm130$ K. NGTS-12b orbits with a period of $P=7.53$d, making it the longest period planet discovered to date by the main NGTS survey. We verify the NGTS transit signal with data extracted from the TESS full-frame images, and combining the photometry with radial velocity measurements from HARPS and FEROS we determine NGTS-12b to have a mass of $0.208\pm0.022$ M$_{J}$ and a radius of $1.048\pm0.032$ R$_{J}$. NGTS-12b sits on the edge of the Neptunian desert when we take the stellar properties into account, highlighting the importance of considering both the planet and star when studying the desert. The long period of NGTS-12b combined with its low density of just $0.223\pm0.029$ g cm$^{-3}$ make it an attractive target for atmospheric characterization through transmission spectroscopy with a Transmission Spectroscopy Metric of 89.4., Comment: Accepted for publication in MNRAS, 11 pages

Published
2020
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5. TOI-481 b & TOI-892 b: Two long period hot Jupiters from the Transiting Exoplanet Survey Satellite

Author

Brahm, Rafael, Nielsen, Louise D., Wittenmyer, Robert A., Wang, Songhu, Rodriguez, Joseph E., Espinoza, Néstor, Jones, Matías I., Jordán, Andrés, Henning, Thomas, Hobson, Melissa, Kossakowski, Diana, Rojas, Felipe, Sarkis, Paula, Schlecker, Martin, Trifonov, Trifon, Shahaf, Sahar, Ricker, George, Vanderspek, Roland, Latham, David W., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Addison, Brett C., Bakos, Gáspár Á., Bhatti, Waqas, Bayliss, Daniel, Berlind, Perry, Bieryla, Allyson, Bouchy, Francois, Bowler, Brendan P., Briceño, César, Brown, Timothy M., Bryant, Edward M., Caldwell, Douglas A., Charbonneau, David, Collins, Karen A., Davis, Allen B., Esquerdo, Gilbert A., Fulton, Benjamin J., Guerrero, Natalia M., Henze, Christopher E., Hogan, Aleisha, Horner, Jonathan, Huang, Chelsea X., Irwin, Jonathan, Kane, Stephen R., Kielkopf, John, Mann, Andrew W., Mazeh, Tsevi, McCormac, James, McCully, Curtis, Mengel, Matthew W., Mireles, Ismael, Okumura, Jack, Plavchan, Peter, Quinn, Samuel N., Rabus, Markus, Saesen, Sophie, Schlieder, Joshua E., Segransan, Damien, Shiao, Bernie, Shporer, Avi, Siverd, Robert J., Stassun, Keivan G., Suc, Vincent, Tan, Thiam-Guan, Torres, Pascal, Tinney, Chris G., Udry, Stephane, Vanzi, Leonardo, Vezie, Michael, Vines, Jose I., Vuckovic, Maja, Wright, Duncan J., Yahalomi, Daniel A., Zapata, Abner, Zhang, Hui, and Ziegler, Carl

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the discovery of two new 10-day period giant planets from the Transiting Exoplanet Survey Satellite ($TESS$) mission, whose masses were precisely determined using a wide diversity of ground-based facilities. TOI-481 b and TOI-892 b have similar radii ($0.99\pm0.01$ $\rm R_{J}$ and $1.07\pm0.02$ $\rm R_{J}$, respectively), and orbital periods (10.3311 days and 10.6266 days, respectively), but significantly different masses ($1.53\pm0.03$ $\rm M_{J}$ versus $0.95\pm0.07$ $\rm M_{J}$, respectively). Both planets orbit metal-rich stars ([Fe/H]= $+0.26\pm 0.05$ dex and [Fe/H] = $+0.24 \pm 0.05$ dex, for TOI-481 and TOI-892, respectively) but at different evolutionary stages. TOI-481 is a $\rm M_{\star}$ = $1.14\pm0.02$ $\rm M_{\odot}$, $\rm R_{\star}$ = $1.66\pm0.02$ $\rm R_{\odot}$ G-type star ($T_{\rm eff}$ = $5735 \pm 72$ K), that with an age of 6.7 Gyr, is in the turn-off point of the main sequence. TOI-892, on the other hand, is a F-type dwarf star ($T_{\rm eff}$ = $6261 \pm 80$ K), which has a mass of $\rm M_{\star}$ = $1.28\pm0.03$ $\rm M_{\odot}$, and a radius of $\rm R_{\star}$ = $1.39\pm0.02$ $\rm R_{\odot}$. TOI-481 b and TOI-892 b join the scarcely populated region of transiting gas giants with orbital periods longer than 10 days, which is important to constrain theories of the formation and structure of hot Jupiters., Comment: 19 pages, 10 figures, accepted for publication in AJ

Published
2020
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6. NGTS-11 b / TOI-1847 b: A transiting warm Saturn recovered from a TESS single-transit event

Author

Gill, Samuel, Wheatley, Peter J., Cooke, Benjamin F., Jordán, Andrés, Nielsen, Louise D., Bayliss, Daniel, Anderson, David R., Vines, Jose I., Lendl, Monika, Acton, Jack S., Armstrong, David J., Bouchy, François, Brahm, Rafael, Bryant, Edward M., Burleigh, Matthew R., Casewell, Sarah L., Eigmüller, Philipp, Espinoza, Néstor, Gillen, Edward, Goad, Michael R., Grieves, Nolan, Günther, Maximilian N., Henning, Thomas, Hobson, Melissa J., Hogan, Aleisha, Jenkins, James S., McCormac, James, Moyano, Maximiliano, Osborn, Hugh P., Pollacco, Don, Queloz, Didier, Rauer, Heike, Rojas, Felipe, Sarkis, Paula, Smith, Alexis M. S., Pinto, Marcelo Tala, Tilbrook, Rosanna H., Udry, Stéphane, Watson, Christopher A., and West, Richard G.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

We report the discovery of NGTS-11 b (=TOI-1847 b), a transiting Saturn in a 35.46-day orbit around a mid K-type star (Teff=5050 K). We initially identified the system from a single-transit event in a TESS full-frame image light-curve. Following seventy-nine nights of photometric monitoring with an NGTS telescope, we observed a second full transit of NGTS-11 b approximately one year after the TESS single-transit event. The NGTS transit confirmed the parameters of the transit signal and restricted the orbital period to a set of 13 discrete periods. We combined our transit detections with precise radial velocity measurements to determine the true orbital period and measure the mass of the planet. We find NGTS-11 b has a radius of 0.817+0.028-0.032 $R_J$, a mass of 0.344+0.092-0.073 $M_J$, and an equilibrium temperature of just 435+34-32 K, making it one of the coolest known transiting gas giants. NGTS-11 b is the first exoplanet to be discovered after being initially identified as a TESS single-transit event, and its discovery highlights the power of intense photometric monitoring in recovering longer-period transiting exoplanets from single-transit events., Comment: 8 pages, 3 Figures, 1 table. Accepted to ApJ letters

Published
2020
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7. TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet

Author

Osborn, Ares, primary, Armstrong, David J, additional, Cale, Bryson, additional, Brahm, Rafael, additional, Wittenmyer, Robert A, additional, Dai, Fei, additional, Crossfield, Ian J M, additional, Bryant, Edward M, additional, Adibekyan, Vardan, additional, Cloutier, Ryan, additional, Collins, Karen A, additional, Delgado Mena, E, additional, Fridlund, Malcolm, additional, Hellier, Coel, additional, Howell, Steve B, additional, King, George W, additional, Lillo-Box, Jorge, additional, Otegi, Jon, additional, Sousa, S, additional, Stassun, Keivan G, additional, Matthews, Elisabeth C, additional, Ziegler, Carl, additional, Ricker, George, additional, Vanderspek, Roland, additional, Latham, David W, additional, Seager, S, additional, Winn, Joshua N, additional, Jenkins, Jon M, additional, Acton, Jack S, additional, Addison, Brett C, additional, Anderson, David R, additional, Ballard, Sarah, additional, Barrado, David, additional, Barros, Susana C C, additional, Batalha, Natalie, additional, Bayliss, Daniel, additional, Barclay, Thomas, additional, Benneke, Björn, additional, Berberian, John, additional, Bouchy, Francois, additional, Bowler, Brendan P, additional, Briceño, César, additional, Burke, Christopher J, additional, Burleigh, Matthew R, additional, Casewell, Sarah L, additional, Ciardi, David, additional, Collins, Kevin I, additional, Cooke, Benjamin F, additional, Demangeon, Olivier D S, additional, Díaz, Rodrigo F, additional, Dorn, C, additional, Dragomir, Diana, additional, Dressing, Courtney, additional, Dumusque, Xavier, additional, Espinoza, Néstor, additional, Figueira, P, additional, Fulton, Benjamin, additional, Furlan, E, additional, Gaidos, E, additional, Geneser, C, additional, Gill, Samuel, additional, Goad, Michael R, additional, Gonzales, Erica J, additional, Gorjian, Varoujan, additional, Günther, Maximilian N, additional, Helled, Ravit, additional, Henderson, Beth A, additional, Henning, Thomas, additional, Hogan, Aleisha, additional, Hojjatpanah, Saeed, additional, Horner, Jonathan, additional, Howard, Andrew W, additional, Hoyer, Sergio, additional, Huber, Dan, additional, Isaacson, Howard, additional, Jenkins, James S, additional, Jensen, Eric L N, additional, Jordán, Andrés, additional, Kane, Stephen R, additional, Kidwell, Richard C, additional, Kielkopf, John, additional, Law, Nicholas, additional, Lendl, Monika, additional, Lund, M, additional, Matson, Rachel A, additional, Mann, Andrew W, additional, McCormac, James, additional, Mengel, Matthew W, additional, Morales, Farisa Y, additional, Nielsen, Louise D, additional, Okumura, Jack, additional, Osborn, Hugh P, additional, Petigura, Erik A, additional, Plavchan, Peter, additional, Pollacco, Don, additional, Quintana, Elisa V, additional, Raynard, Liam, additional, Robertson, Paul, additional, Rose, Mark E, additional, Roy, Arpita, additional, Reefe, Michael, additional, Santerne, Alexandre, additional, Santos, Nuno C, additional, Sarkis, Paula, additional, Schlieder, J, additional, Schwarz, Richard P, additional, Scott, Nicholas J, additional, Shporer, Avi, additional, Smith, A M S, additional, Stibbard, C, additional, Stockdale, Chris, additional, Strøm, Paul A, additional, Twicken, Joseph D, additional, Tan, Thiam-Guan, additional, Tanner, A, additional, Teske, J, additional, Tilbrook, Rosanna H, additional, Tinney, C G, additional, Udry, Stephane, additional, Villaseñor, Jesus Noel, additional, Vines, Jose I, additional, Wang, Sharon X, additional, Weiss, Lauren M, additional, West, Richard G, additional, Wheatley, Peter J, additional, Wright, Duncan J, additional, Zhang, Hui, additional, and Zohrabi, F, additional

Published
2021
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8. NGTS 15b, 16b, 17b, and 18b: four hot Jupiters from the Next-Generation Transit Survey

Author

Tilbrook, Rosanna H, primary, Burleigh, Matthew R, additional, Costes, Jean C, additional, Gill, Samuel, additional, Nielsen, Louise D, additional, Vines, José I, additional, Queloz, Didier, additional, Hodgkin, Simon T, additional, Worters, Hannah L, additional, Goad, Michael R, additional, Acton, Jack S, additional, Henderson, Beth A, additional, Armstrong, David J, additional, Anderson, David R, additional, Bayliss, Daniel, additional, Bouchy, François, additional, Briegal, Joshua T, additional, Bryant, Edward M, additional, Casewell, Sarah L, additional, Chaushev, Alexander, additional, Cooke, Benjamin F, additional, Eigmüller, Philipp, additional, Gillen, Edward, additional, Günther, Maximilian N, additional, Hogan, Aleisha, additional, Jenkins, James S, additional, Lendl, Monika, additional, McCormac, James, additional, Moyano, Maximiliano, additional, Raynard, Liam, additional, Smith, Alexis M S, additional, Udry, Stéphane, additional, Watson, Christopher A, additional, West, Richard G, additional, Wheatley, Peter J, additional, Breytenbach, Hannes, additional, Sefako, Ramotholo R, additional, Thomas, Jessymol K, additional, and Alves, Douglas R, additional

Published
2021
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9. NGTS-13b: a hot 4.8 Jupiter-mass planet transiting a subgiant star

Author

Grieves, Nolan, primary, Nielsen, Louise D., additional, Vines, Jose I., additional, Bryant, Edward M., additional, Gill, Samuel, additional, Bouchy, François, additional, Lendl, Monika, additional, Bayliss, Daniel, additional, Eigmueller, Philipp, additional, Segransan, Damien, additional, Acton, Jack S., additional, Anderson, David R., additional, Burleigh, Matthew R., additional, Casewell, Sarah L., additional, Chaushev, Alexander, additional, Cooke, Benjamin F., additional, Gillen, Edward, additional, Goad, Michael R., additional, Günther, Maximilian N., additional, Henderson, Beth A., additional, Hogan, Aleisha, additional, Jenkins, James S., additional, Alves, Douglas R., additional, Jordán, Andrés, additional, McCormac, James, additional, Moyano, Maximiliano, additional, Queloz, Didier, additional, Raynard, Liam, additional, Seidel, Julia V., additional, Smith, Alexis M. S., additional, Tilbrook, Rosanna H., additional, Udry, Stephane, additional, West, Richard G., additional, and Wheatley, Peter J., additional

Published
2021
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10. NGTS - Uncovering New Worlds with Ultra-Precise Photometry

Author

Bayliss, Daniel, Wheatley, Peter, West, Richard, Pollacco, Don, Anderson, David R., Armstrong, David, Bryant, Edward, Cegla, Heather, Cooke, Benjamin, Gänsicke, Boris, Gill, Samuel, Jackman, James, Loudon, Tom, McCormac, James, Acton, Jack, Burleigh, Matthew R., Casewell, Sarah, Goad, Michael, Henderson, Beth, Hogan, Aleisha, Raynard, Liam, Tilbrook, Rosanna H., Briegal, Joshua, Gillen, Edward, Queloz, Didier, Smith, Gareth, Eigmüller, Philipp, Smith, Alexis M. S., Watson, Christopher, Bouchy, François, Lendl, Monika, Nielsen, Louise D., Udry, Stéphane, Jenkins, James, Vines, José, Jordán, Andrés, Moyano, Maximiliano, and Günther, Maximilian N.

Subjects
Extrasolare Planeten und Atmosphären, Exoplanets, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The Next Generation Transit Survey (NGTS) is a state-of-the-art photometric facility located at ESO’s Paranal Observatory. NGTS is able to reach a precision of 150 ppm in 30 minutes, making it the most precise ground-based photometric system in the world. This precision has led to the discovery of a rare exoplanet in the “Neptune Desert” (NGTS-4b), the shortest-period hot Jupiter ever discovered (NGTS-10b), and the first exoplanet recovered from a TESS monotransit candidate (NGTS-11b). It has also allowed NGTS to characterise exoplanet candidates transiting very bright stars (V < 10) from the TESS mission, and to make coordinated observations in support of VLT programmes., Published in The Messenger vol. 181, pp. 28-32, September 2020.

Published
2020

11. TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite

Author

Brahm, Rafael, primary, Nielsen, Louise D., additional, Wittenmyer, Robert A., additional, Wang, Songhu, additional, Rodriguez, Joseph E., additional, Espinoza, Néstor, additional, Jones, Matías I., additional, Jordán, Andrés, additional, Henning, Thomas, additional, Hobson, Melissa, additional, Kossakowski, Diana, additional, Rojas, Felipe, additional, Sarkis, Paula, additional, Schlecker, Martin, additional, Trifonov, Trifon, additional, Shahaf, Sahar, additional, Ricker, George, additional, Vanderspek, Roland, additional, Latham, David W., additional, Seager, Sara, additional, Winn, Joshua N., additional, Jenkins, Jon M., additional, Addison, Brett C., additional, Bakos, Gáspár Á., additional, Bhatti, Waqas, additional, Bayliss, Daniel, additional, Berlind, Perry, additional, Bieryla, Allyson, additional, Bouchy, Francois, additional, Bowler, Brendan P., additional, Briceño, César, additional, Brown, Timothy M., additional, Bryant, Edward M., additional, Caldwell, Douglas A., additional, Charbonneau, David, additional, Collins, Karen A., additional, Davis, Allen B., additional, Esquerdo, Gilbert A., additional, Fulton, Benjamin J., additional, Guerrero, Natalia M., additional, Henze, Christopher E., additional, Hogan, Aleisha, additional, Horner, Jonathan, additional, Huang, Chelsea X., additional, Irwin, Jonathan, additional, Kane, Stephen R., additional, Kielkopf, John, additional, Mann, Andrew W., additional, Mazeh, Tsevi, additional, McCormac, James, additional, McCully, Curtis, additional, Mengel, Matthew W., additional, Mireles, Ismael, additional, Okumura, Jack, additional, Plavchan, Peter, additional, Quinn, Samuel N., additional, Rabus, Markus, additional, Saesen, Sophie, additional, Schlieder, Joshua E., additional, Segransan, Damien, additional, Shiao, Bernie, additional, Shporer, Avi, additional, Siverd, Robert J., additional, Stassun, Keivan G., additional, Suc, Vincent, additional, Tan, Thiam-Guan, additional, Torres, Pascal, additional, Tinney, Chris G., additional, Udry, Stephane, additional, Vanzi, Leonardo, additional, Vezie, Michael, additional, Vines, Jose I., additional, Vuckovic, Maja, additional, Wright, Duncan J., additional, Yahalomi, Daniel A., additional, Zapata, Abner, additional, Zhang, Hui, additional, and Ziegler, Carl, additional

Published
2020
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12. NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit

Author

Bryant, Edward M, primary, Bayliss, Daniel, additional, Nielsen, Louise D, additional, Veras, Dimitri, additional, Acton, Jack S, additional, Anderson, David R, additional, Armstrong, David J, additional, Bouchy, François, additional, Briegal, Joshua T, additional, Burleigh, Matthew R, additional, Cabrera, Juan, additional, Casewell, Sarah L, additional, Chaushev, Alexander, additional, Cooke, Benjamin F, additional, Csizmadia, Szilárd, additional, Eigmüller, Philipp, additional, Erikson, Anders, additional, Gill, Samuel, additional, Gillen, Edward, additional, Goad, Michael R, additional, Grieves, Nolan, additional, Günther, Maximilian N, additional, Henderson, Beth, additional, Hogan, Aleisha, additional, Jenkins, James S, additional, Lendl, Monika, additional, McCormac, James, additional, Moyano, Maximiliano, additional, Queloz, Didier, additional, Rauer, Heike, additional, Raynard, Liam, additional, Smith, Alexis M S, additional, Tilbrook, Rosanna H, additional, Udry, Stéphane, additional, Vines, Jose I, additional, Watson, Christopher A, additional, West, Richard G, additional, and Wheatley, Peter J, additional

Published
2020
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13. NGTS-11 b (TOI-1847 b): A Transiting Warm Saturn Recovered from a TESS Single-transit Event

Author

Gill, Samuel, primary, Wheatley, Peter J., additional, Cooke, Benjamin F., additional, Jordán, Andrés, additional, Nielsen, Louise D., additional, Bayliss, Daniel, additional, Anderson, David R., additional, Vines, Jose I., additional, Lendl, Monika, additional, Acton, Jack S., additional, Armstrong, David J., additional, Bouchy, François, additional, Brahm, Rafael, additional, Bryant, Edward M., additional, Burleigh, Matthew R., additional, Casewell, Sarah L., additional, Eigmüller, Philipp, additional, Espinoza, Néstor, additional, Gillen, Edward, additional, R. Goad, Michael, additional, Grieves, Nolan, additional, Günther, Maximilian N., additional, Henning, Thomas, additional, Hobson, Melissa J., additional, Hogan, Aleisha, additional, Jenkins, James S., additional, McCormac, James, additional, Moyano, Maximiliano, additional, Osborn, Hugh P., additional, Pollacco, Don, additional, Queloz, Didier, additional, Rauer, Heike, additional, Raynard, Liam, additional, Rojas, Felipe, additional, Sarkis, Paula, additional, Smith, Alexis M. S., additional, Pinto, Marcelo Tala, additional, Tilbrook, Rosanna H., additional, Udry, Stéphane, additional, Watson, Christopher A., additional, and West, Richard G., additional

Published
2020
Full Text
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