Browsing Research publications by Author "Horner, Jonathan"

Now showing items 1-13 of 13

    • The Anglo-Australian Planet Search XXIV: The Frequency of Jupiter Analogs 

      Wittenmyer, Robert A.; Butler, R. Paul; Tinney, C. G.; Horner, Jonathan; Carter, B. D.; Wright, D. J.; Jones, Hugh; Bailey, J.; O'Toole, Simon J. (2016-03-01)
      We present updated simulations of the detectability of Jupiter analogs by the 17-year Anglo-Australian Planet Search. The occurrence rate of Jupiter-like planets that have remained near their formation locations beyond the ...

    • The Anglo-Australian Planet Search XXV : A Candidate Massive Saturn Analog Orbiting HD 30177 

      Wittenmyer, Robert A.; Horner, Jonathan; Mengel, M. W.; Butler, R. P.; Tinney, C. G.; Carter, B. D.; Jones, H. R. A.; Anglada-Escude, G.; Bailey, J.; O'Toole, Simon J. (2017-03-20)
      We report the discovery of a second long-period giant planet orbiting HD 30177, a star previously known to host a massive Jupiter analog (HD 30177b: a=3.8$\pm$0.1 au, m sin $i=9.7\pm$0.5 Mjup). HD 30177c can be regarded ...

    • The Anglo-Australian planet search. XXIII. Two new jupiter analogs 

      Wittenmyer, Robert A.; Horner, Jonathan; Tinney, C. G.; Butler, R. P.; Jones, H. R A; Salter, G. S.; Carter, B. D.; Koch, F. Elliott; O'Toole, S. J.; Bailey, J.; Wright, D.; Tuomi, Mikko (2014-03-10)
      We report the discovery of two long-period giant planets from the Anglo-Australian Planet Search. HD 154857c is in a multiple-planet system, while HD 114613b appears to be solitary. HD 114613b has an orbital period P = ...

    • Cool Jupiters greatly outnumber their toasty siblings : Occurrence rates from the Anglo-Australian Planet Search 

      Wittenmyer, Robert A.; Wang, Songhu; Horner, Jonathan; Butler, R. P.; Tinney, C. G.; Carter, B. D.; Wright, D. J.; Jones, H. R. A.; Bailey, J.; O'Toole, S. J.; Johns, Daniel (2020-02-01)
      Our understanding of planetary systems different to our own has grown dramatically in the past 30 yr. However, our efforts to ascertain the degree to which the Solar system is abnormal or unique have been hindered by the ...

    • A dense mini-Neptune orbiting the bright young star HD 18599 

      Vines, Jose I.; Jenkins, James S.; Berdiñas, Zaira; Soto, Maritza G.; Díaz, Matías R.; Alves, Douglas R.; Tuomi, Mikko; Wittenmyer, Robert A.; Leon, Jerome Pitogo de; Peña, Pablo; Lissauer, Jack J.; Ballard, Sarah; Bedding, Timothy; Bowler, Brendan P.; Horner, Jonathan; Jones, Hugh R. A.; Kielkopf, John; Plavchan, Peter; Shporer, Avi; Tinney, C. G.; Wright, Hui Zhang Duncan J.; Addison, Brett; Mengel, Matthew W.; Okumura, Jack; Samadi-Ghadim, Anya (2022-10-13)
      Very little is known about the young planet population because the detection of small planets orbiting young stars is obscured by the effects of stellar activity and fast rotation which mask planets within radial velocity ...

    • A detailed analysis of the HD 73526 2:1 resonant planetary system 

      Wittenmyer, Robert A.; Tan, Xianyu; Lee, Man Hoi; Horner, Jonathan; Tinney, C.G.; Butler, R. P.; Salter, G. S.; Carter, B. D.; Jones, H.R.A.; O'Toole, S. J.; Bailey, J.; Wright, D.; Crane, J. D.; Schectman, S. A.; Arriagada, P.; Thompson, I.; Minniti, D.; Diaz, M. (2014-01-10)
      We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical ( interacting) fits to these ...

    • Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques 

      Kane, Stephen R.; Dalba, Paul A.; Li, Zhexing; Horch, Elliott P.; Hirsch, Lea A.; Horner, Jonathan; Wittenmyer, Robert A.; Howell, Steve B.; Everett, Mark E.; Butler, R. Paul; Tinney, Christopher G.; Carter, Brad D.; Wright, Duncan J.; Jones, Hugh R. A.; Bailey, Jeremy; O'Toole, Simon J. (2019-06-04)
      The sensitivities of radial velocity (RV) surveys for exoplanet detection are extending to increasingly longer orbital periods, where companions with periods of several years are now being regularly discovered. Companions ...

    • Forever alone? : Testing single eccentric planetary systems for multiple companions 

      Wittenmyer, Robert A.; Wang, Songhu; Horner, Jonathan; Tinney, C.G.; Butler, R. P.; Jones, H.R.A.; O'Toole, S. J.; Bailey, J.; Carter, B. D.; Salter, G. S.; Wright, D.; Zhou, Ji-Lin (2013-09)
      Determining the orbital eccentricity of an extrasolar planet is critically important for understanding the system's dynamical environment and history. However, eccentricity is often poorly determined or entirely mischaracterized ...

    • The GALAH Survey: Chemical tagging and chrono-chemodynamics of accreted halo stars with GALAH+ DR3 and $Gaia$ eDR3 

      Buder, Sven; Lind, Karin; Ness, Melissa K.; Feuillet, Diane K.; Horta, Danny; Monty, Stephanie; Buck, Tobias; Nordlander, Thomas; Bland-Hawthorn, Joss; Casey, Andrew R.; Silva, Gayandhi M. De; D'Orazi, Valentina; Freeman, Ken C.; Hayden, Michael R.; Kos, Janez; Martell, Sarah L.; Lewis, Geraint F.; Lin, Jane; Schlesinger, Katharine J.; Sharma, Sanjib; Simpson, Jeffrey D.; Stello, Dennis; Zucker, Daniel B.; Zwitter, Tomaz; Ciuca, Ioana; Horner, Jonathan; Kobayashi, Chiaki; Ting, Yuan-Sen; Wyse, Rosemary F. G.; Collaboration, The GALAH (2022-02-01)
      Since the advent of $Gaia$ astrometry, it is possible to identify massive accreted systems within the Galaxy through their unique dynamical signatures. One such system, $Gaia$-Sausage-Enceladus (GSE), appears to be an early ...

    • The GALAH+ Survey : Third Data Release 

      Buder, Sven; Sharma, Sanjib; Kos, Janez; Amarsi, Anish M.; Nordlander, Thomas; Lind, Karin; Martell, Sarah L.; Asplund, Martin; Bland-Hawthorn, Joss; Casey, Andrew R.; Silva, Gayandhi M. De; D'Orazi, Valentina; Freeman, Ken C.; Hayden, Michael R.; Lewis, Geraint F.; Lin, Jane; Schlesinger, Katharine J.; Simpson, Jeffrey D.; Stello, Dennis; Zucker, Daniel B.; Zwitter, Tomaz; Beeson, Kevin L.; Buck, Tobias; Casagrande, Luca; Clark, Jake T.; Cotar, Klemen; Costa, Gary S. Da; Grijs, Richard de; Feuillet, Diane; Horner, Jonathan; Kafle, Prajwal R.; Khanna, Shourya; Kobayashi, Chiaki; Liu, Fan; Montet, Benjamin T.; Nandakumar, Govind; Nataf, David M.; Ness, Melissa K.; Spina, Lorenzo; Tepper-Garcia, Thor; Ting, Yuan-Sen; Traven, Gregor; Vogrincic, Rok; Wittenmyer, Robert A.; Wyse, Rosemary F. G.; Zerjal, Marusa; collaboration, the GALAH (2021-05-06)
      The ensemble of chemical element abundance measurements for stars, along with precision distances and orbit properties, provides high-dimensional data to study the evolution of the Milky Way. With this third data release ...

    • GJ 832c : A super-earth in the habitable zone 

      Wittenmyer, Robert A.; Tuomi, Mikko; Butler, R. P.; Jones, Hugh; Anglada-Escudé, Guillem; Horner, Jonathan; Tinney, C. G.; Marshall, J. P.; Carter, B. D.; Bailey, J.; Salter, G. S.; O'Toole, S. J.; Wright, D.; Crane, J. D.; Schectman, S. A.; Arriagada, P.; Thompson, I.; Minniti, D.; Jenkins, J. S.; Diaz, M. (2014-08-05)
      We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an M dwarf previously known to host a Jupiter analog in a nearly circular 9.4 yr orbit. The combination of ...

    • The Gliese 86 Binary System: A Warm Jupiter Formed in a Disk Truncated at ≈2 au 

      Zeng, Yunlin; Brandt, Timothy D.; Li, Gongjie; Dupuy, Trent J.; Li, Yiting; Brandt, G. Mirek; Farihi, Jay; Horner, Jonathan; Wittenmyer, Robert A.; Butler, R. Paul.; Tinney, Christopher G.; Carter, Bradley D.; Wright, Duncan J.; Jones, Hugh R. A.; O’Toole, Simon J. (2022-10-12)
      Gliese 86 is a nearby K dwarf hosting a giant planet on a ≈16 day orbit and an outer white dwarf companion on a ≈century-long orbit. In this study we combine radial velocity data (including new measurements spanning more ...

    • Transits of Known Planets Orbiting a Naked-Eye Star 

      Kane, Stephen R.; Yalçınkaya, Selçuk; Osborn, Hugh P.; Dalba, Paul A.; Nielsen, Louise D.; Vanderburg, Andrew; Močnik, Teo; Hinkel, Natalie R.; Ostberg, Colby; Esmer, Ekrem Murat; Udry, Stéphane; Fetherolf, Tara; Baştürk, Özgür; Ricker, George R.; Vanderspek, Roland; Latham, David W.; Seager, Sara; Winn, Joshua N.; Jenkins, Jon M.; Allart, Romain; Bailey, Jeremy; Bean, Jacob L.; Bouchy, Francois; Butler, R. Paul; Campante, Tiago L.; Carter, Brad D.; Daylan, Tansu; Deleuil, Magali; Diaz, Rodrigo F.; Dumusque, Xavier; Ehrenreich, David; Horner, Jonathan; Howard, Andrew W.; Isaacson, Howard; Jones, Hugh R. A.; Kristiansen, Martti H.; Lovis, Christophe; Marcy, Geoffrey W.; Marmier, Maxime; O'Toole, Simon J.; Pepe, Francesco; Ragozzine, Darin; Ségransan, Damien; Tinney, C. G.; Turnbull, Margaret C.; Wittenmyer, Robert A.; Wright, Duncan J.; Wright, Jason T. (2020-09-01)
      Some of the most scientifically valuable transiting planets are those that were already known from radial velocity (RV) surveys. This is primarily because their orbits are well characterized and they preferentially orbit ...