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Full-Text Articles in Physical Sciences and Mathematics
Physical Parameters Of The Multiplanet Systems Hd 106315 And Gj 9827*†, Molly R. Kosiarek, David A. Berardo, Ian J. M. Crossfield, Cesar Laguna, Caroline Piaulet, Joseph M. Akana Murphy, Steve B. Howell, Gregory W. Henry, Howard Isaacson, Benjamin Fulton, Lauren M. Weiss, Erik A. Petigura, Aida Behmard, Lea A. Hirsch, Johanna Teske, Jennifer A. Burt, Sean M. Mills, Ashley Chontos, Teo Močnik, Andrew W. Howard, Michael Werner, John H. Livingston, Jessica Krick, Charles Beichman, Varoujan Gorjian, Laura Kreidberg, Caroline Morley, Jessie L. Christiansen, Farisa Y. Morales, Nicholas J. Scott, Jeffrey D. Crane, Sharon Xuesong Wang, Stephen A. Shectman, Lee J. Rosenthal, Samuel K. Grunblatt, Ryan A. Rubenzahl, Paul A. Dalba, Steven Giacalone, Chiara Dane Villanueva, Qingtian Liu, Fei Dai, Michelle L. Hill, Malena Rice, Stephen R. Kane, Andrew W. Mayo
Physical Parameters Of The Multiplanet Systems Hd 106315 And Gj 9827*†, Molly R. Kosiarek, David A. Berardo, Ian J. M. Crossfield, Cesar Laguna, Caroline Piaulet, Joseph M. Akana Murphy, Steve B. Howell, Gregory W. Henry, Howard Isaacson, Benjamin Fulton, Lauren M. Weiss, Erik A. Petigura, Aida Behmard, Lea A. Hirsch, Johanna Teske, Jennifer A. Burt, Sean M. Mills, Ashley Chontos, Teo Močnik, Andrew W. Howard, Michael Werner, John H. Livingston, Jessica Krick, Charles Beichman, Varoujan Gorjian, Laura Kreidberg, Caroline Morley, Jessie L. Christiansen, Farisa Y. Morales, Nicholas J. Scott, Jeffrey D. Crane, Sharon Xuesong Wang, Stephen A. Shectman, Lee J. Rosenthal, Samuel K. Grunblatt, Ryan A. Rubenzahl, Paul A. Dalba, Steven Giacalone, Chiara Dane Villanueva, Qingtian Liu, Fei Dai, Michelle L. Hill, Malena Rice, Stephen R. Kane, Andrew W. Mayo
Information Systems and Engineering Management Research Publications
HD 106315 and GJ 9827 are two bright, nearby stars that host multiple super-Earths and sub-Neptunes discovered by K2 that are well suited for atmospheric characterization. We refined the planets' ephemerides through Spitzer transits, enabling accurate transit prediction required for future atmospheric characterization through transmission spectroscopy. Through a multiyear high-cadence observing campaign with Keck/High Resolution Echelle Spectrometer and Magellan/Planet Finder Spectrograph, we improved the planets' mass measurements in anticipation of Hubble Space Telescope transmission spectroscopy. For GJ 9827, we modeled activity-induced radial velocity signals with a Gaussian process informed by the Calcium II H&K lines in order to more accurately …
Two Young Planetary Systems Around Field Stars With Ages Between 20 And 320 Myr From Tess, G. Zhou, S. N. Quinn, J. Irwin, C. X. Huang, K. A. Collins, L. G. Bouma, L. Khan, A. Landrigan, A. M. Vanderburg, J. E. Rodriguez, D. W. Latham, G. Torres, S. T. Douglas, A. Bieryla, G. A. Esquerdo, P. Berlind, M. L. Calkins, L. A. Buchhave, D. Charbonneau, K. I. Collins, J. F. Kielkopf, Eric L.N. Jensen, T.-G. Tan, R. Hart, B. Carter, C. Stockdale, C. Ziegler, N. Law, A. W. Mann, S. B. Howell, R. A. Matson, N. J. Scott, E. Furlan, R. J. White, C. Hellier, D. R. Anderson, R. G. West, G. Ricker, R. Vanderspek, S. Seager, J. M. Jenkins, J. N. Winn, I. Mireles, P. Rowden, D. A. Yahalomi, B. Wohler, C. E. Brasseur, T. Daylan, K. D. Colón
Two Young Planetary Systems Around Field Stars With Ages Between 20 And 320 Myr From Tess, G. Zhou, S. N. Quinn, J. Irwin, C. X. Huang, K. A. Collins, L. G. Bouma, L. Khan, A. Landrigan, A. M. Vanderburg, J. E. Rodriguez, D. W. Latham, G. Torres, S. T. Douglas, A. Bieryla, G. A. Esquerdo, P. Berlind, M. L. Calkins, L. A. Buchhave, D. Charbonneau, K. I. Collins, J. F. Kielkopf, Eric L.N. Jensen, T.-G. Tan, R. Hart, B. Carter, C. Stockdale, C. Ziegler, N. Law, A. W. Mann, S. B. Howell, R. A. Matson, N. J. Scott, E. Furlan, R. J. White, C. Hellier, D. R. Anderson, R. G. West, G. Ricker, R. Vanderspek, S. Seager, J. M. Jenkins, J. N. Winn, I. Mireles, P. Rowden, D. A. Yahalomi, B. Wohler, C. E. Brasseur, T. Daylan, K. D. Colón
Physics & Astronomy Faculty Works
Planets around young stars trace the early evolution of planetary systems. We report the discovery and validation of two planetary systems with ages lesssim300 Myr from observations by the Transiting Exoplanet Survey Satellite (TESS). The $40\mbox{--}320$Myr old G star TOI-251 hosts a ${2.74}_{-0.18}^{+0.18}\,{R}_{\oplus }$mini-Neptune with a $4.94$day period. The $20\mbox{--}160$Myr old K star TOI-942 hosts a system of inflated Neptune-sized planets, with TOI-942b orbiting in a period of $4.32$days with a radius of ${4.81}_{-0.20}^{+0.20}\,{R}_{\oplus }$and TOI-942c orbiting in a period of $10.16$days with a radius of ${5.79}_{-0.18}^{+0.19}\,{R}_{\oplus }$. Though we cannot place either host star into a known stellar association …
The Hubble Space Telescope Pancet Program: An Optical To Infrared Transmission Spectrum Of Hat-P-32ab, Munazza K. Alam, Mercedes López-Morales, Nikolay Nikolov, David K. Sing, Gregory W. Henry, Claire Baxter, Jean-Michel Désert, Joanna K. Barstow, Thomas Mikal-Evans, Vincent Bourrier, Panayotis Lavvas, Hannah R. Wakeford, Michael H. Williamson, Jorge Sanz-Forcada, Lars A. Buchhave, Ofer Cohen, Antonio García Muñoz
The Hubble Space Telescope Pancet Program: An Optical To Infrared Transmission Spectrum Of Hat-P-32ab, Munazza K. Alam, Mercedes López-Morales, Nikolay Nikolov, David K. Sing, Gregory W. Henry, Claire Baxter, Jean-Michel Désert, Joanna K. Barstow, Thomas Mikal-Evans, Vincent Bourrier, Panayotis Lavvas, Hannah R. Wakeford, Michael H. Williamson, Jorge Sanz-Forcada, Lars A. Buchhave, Ofer Cohen, Antonio García Muñoz
Information Systems and Engineering Management Research Publications
We present a 0.3−5 μm transmission spectrum of the hot Jupiter HAT-P-32Ab observed with the Space Telescope Imaging Spectrograph and Wide Field Camera 3 instruments mounted on the Hubble Space Telescope, combined with Spitzer Infrared Array Camera photometry. The spectrum is composed of 51 spectrophotometric bins with widths ranging between 150 and 400 Å, measured to a median precision of 215 ppm. Comparisons of the observed transmission spectrum to a grid of 1D radiative-convective equilibrium models indicate the presence of clouds/hazes, consistent with previous transit observations and secondary eclipse measurements. To provide more robust constraints on the planet's atmospheric properties, …
A Remnant Planetary Core In The Hot-Neptune Desert, D. J. Armstrong, T. A. Lopez, V. Adibekyan, R. A. Booth, E. M. Bryant, K. A. Collins, A. Esmenhuber, C. X. Huang, G. W. King, J. Lillo-Box, J. J. Lissauer, E. C. Matthews, O. Mousis, L. D. Nielsen, H. Osborn, J. Otegi, N. C. Santos, S. G. Sousa, K. G. Stassun, D. Veras, C. Ziegler, J. S. Acton, J. M. Almenara, D. R. Anderson, D. Barrado, S. C. C. Barros, D. Bayliss, C. Belardi, F. Bouchy, C. Briceño, M. Brogi, D. J. A. Brown, M. R. Burleigh, S. L. Casewell, A. Chaushev, D. R. Ciardi, K. I. Collins, K. D. Colón, B. F. Cooke, I. J. M. Crossfield, R. F. Díaz, Magali Deleuil, E. Delgado Mena, O. D. S. Demangeon, C. Dorn, X. Dumusque, P. Eigmüller, M. Fausnaugh, P. Figueira, T. Gan, S. Gandhi, S. Gill, M. R. Goad, M. N. Günther, R. Helled, S. Hojjatpanah, S. B. Howell, J. Jackman, J. S. Jenkins, J. M. Jenkins, Eric L.N. Jensen, G. M. Kennedy, D. W. Latham, N. Law, M. Lendl, M. Lozovsky, A. W. Mann, M. Moyano, J. Mccormac, F. Meru, C. Mordasini, A. Osborn, D. Pollacco, D. Queloz, L. Raynard, G. R. Ricker, P. Rowqden, A. Santerne, J. E. Schlieder, S. Seager, L. Sha, T.-G. Tan, R. H. Tilbrook, E. Ting, S. Udry, R. Vanderspek, C. A. Watson, R. G. West, P. A. Wilson, J. N. Winn, P. Wheatley, J. N. Villasenor, J. I. Vines, Z Zhan
A Remnant Planetary Core In The Hot-Neptune Desert, D. J. Armstrong, T. A. Lopez, V. Adibekyan, R. A. Booth, E. M. Bryant, K. A. Collins, A. Esmenhuber, C. X. Huang, G. W. King, J. Lillo-Box, J. J. Lissauer, E. C. Matthews, O. Mousis, L. D. Nielsen, H. Osborn, J. Otegi, N. C. Santos, S. G. Sousa, K. G. Stassun, D. Veras, C. Ziegler, J. S. Acton, J. M. Almenara, D. R. Anderson, D. Barrado, S. C. C. Barros, D. Bayliss, C. Belardi, F. Bouchy, C. Briceño, M. Brogi, D. J. A. Brown, M. R. Burleigh, S. L. Casewell, A. Chaushev, D. R. Ciardi, K. I. Collins, K. D. Colón, B. F. Cooke, I. J. M. Crossfield, R. F. Díaz, Magali Deleuil, E. Delgado Mena, O. D. S. Demangeon, C. Dorn, X. Dumusque, P. Eigmüller, M. Fausnaugh, P. Figueira, T. Gan, S. Gandhi, S. Gill, M. R. Goad, M. N. Günther, R. Helled, S. Hojjatpanah, S. B. Howell, J. Jackman, J. S. Jenkins, J. M. Jenkins, Eric L.N. Jensen, G. M. Kennedy, D. W. Latham, N. Law, M. Lendl, M. Lozovsky, A. W. Mann, M. Moyano, J. Mccormac, F. Meru, C. Mordasini, A. Osborn, D. Pollacco, D. Queloz, L. Raynard, G. R. Ricker, P. Rowqden, A. Santerne, J. E. Schlieder, S. Seager, L. Sha, T.-G. Tan, R. H. Tilbrook, E. Ting, S. Udry, R. Vanderspek, C. A. Watson, R. G. West, P. A. Wilson, J. N. Winn, P. Wheatley, J. N. Villasenor, J. I. Vines, Z Zhan
Physics & Astronomy Faculty Works
The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune ‘desert’1,2 (a region in mass–radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b3, which is thought to have an unusually massive core, and recent discoveries such as LTT9779b4 and NGTS-4b5, on which photoevaporation has removed a substantial part …
Investigating The Stability Of Observed Low Semi-Major Axis Exoplanetary Systems With Hypothetical Outer Planets Using The Program Mercury6, Kendall Butler
Investigating The Stability Of Observed Low Semi-Major Axis Exoplanetary Systems With Hypothetical Outer Planets Using The Program Mercury6, Kendall Butler
Honors College
This project investigates the stability of observed planetary systems, and whether this stability remains in the presence of additional outer planets. This made use of the program Mercury6, an n-body integrator that computes the changes in planetary orbits over time. The Systems HD 136352, GJ 9827, and HD 7924 were studied with initial conditions taken from the available observational data. This information was curated using the online NASA Exoplanet archive of confirmed exoplanets. With these initial conditions, Mercury6 computed the changing planetary orbits of each system for 5 million years. For each of these systems, a single outer planet, which …
Orbital Refinement And Stellar Properties For The Hd 9446, Hd 43691, And Hd 179079 Planetary Systems, Michelle L. Hill, Teo Močnik, Stephen R. Kane, Gregory W. Henry, Joshua Pepper, Natalie R. Hinkel, Paul A. Dalba, Benjamin Fulton, Keivan Stassun, Lee J. Rosenthal, Andrew W. Howard, Steve B. Howell, Mark E. Everett, Tabetha S. Boyajian, Debra A. Fischer, Joseph E. Rodriguez, Thomas G. Beatty, David J. James
Orbital Refinement And Stellar Properties For The Hd 9446, Hd 43691, And Hd 179079 Planetary Systems, Michelle L. Hill, Teo Močnik, Stephen R. Kane, Gregory W. Henry, Joshua Pepper, Natalie R. Hinkel, Paul A. Dalba, Benjamin Fulton, Keivan Stassun, Lee J. Rosenthal, Andrew W. Howard, Steve B. Howell, Mark E. Everett, Tabetha S. Boyajian, Debra A. Fischer, Joseph E. Rodriguez, Thomas G. Beatty, David J. James
Information Systems and Engineering Management Research Publications
The Transit Ephemeris Refinement and Monitoring Survey is a project that aims to detect transits of intermediate-long period planets by refining orbital parameters of the known radial velocity planets using additional data from ground-based telescopes, calculating a revised transit ephemeris for the planet, then monitoring the planet host star during the predicted transit window. Here we present the results from three systems that had high probabilities of transiting planets: HD 9446 b and c, HD 43691 b, and HD 179079 b. We provide new radial velocity (RV) measurements that are then used to improve the orbital solution for the known …
The Exogravity Project: Using Single Mode Interferometry To Characterize Exoplanets, S. Lacour, J. J. Wang, M. Nowak, L. Pueyo, F. Eisenhauer, A. M. Lagrange, P. Mollière, R. Abuter, A. Amorin, R. Asensio-Torres, M. Bauböck, M. Benisty, J. P. Berger, H. Beust, S. Blunt, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, E. Choquet, V. Christiaens, Y. Clénet, A. Cridland, P. T. De Zeeuw, R. Dembet, J. Dexter, A. Drescher, Kimberly Ward-Duong, Et Al
The Exogravity Project: Using Single Mode Interferometry To Characterize Exoplanets, S. Lacour, J. J. Wang, M. Nowak, L. Pueyo, F. Eisenhauer, A. M. Lagrange, P. Mollière, R. Abuter, A. Amorin, R. Asensio-Torres, M. Bauböck, M. Benisty, J. P. Berger, H. Beust, S. Blunt, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, E. Choquet, V. Christiaens, Y. Clénet, A. Cridland, P. T. De Zeeuw, R. Dembet, J. Dexter, A. Drescher, Kimberly Ward-Duong, Et Al
Astronomy: Faculty Publications
Combining adaptive optics and interferometric observations results in a considerable contrast gain compared to single-telescope, extreme AO systems. Taking advantage of this, the ExoGRAVITY project is a survey of known young giant exoplanets located in the range of 0.1"to 2"from their stars. The observations provide astrometric data of unprecedented accuracy, being crucial for refining the orbital parameters of planets and illuminating their dynamical histories. Furthermore, GRAVITY will measure non-Keplerian perturbations due to planet-planet interactions in multi-planet systems and measure dynamical masses. Over time, repetitive observations of the exoplanets at medium resolution (R = 500) will provide a catalogue of K-band …