Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Astrophysics and Astronomy

Swarthmore College

Exoplanet astronomy

2020

Articles 1 - 2 of 2

Full-Text Articles in Physical Sciences and Mathematics

Kelt-25 B And Kelt-26 B: A Hot Jupiter And A Substellar Companion Transiting Young A Stars Observed By Tess, R. R. Martínez, R. R. Martínez, B. S. Gaudi, J. E. Rodriguez, G. Zhou, J. Labadie-Bartz, S. N. Quinn, K. Penev, T.-G. Tan, D. W. Latham, L. A. Paredes, J. F. Kielkopf, B. Addison, D. J. Wright, J. Teske, S. B. Howell, D. Ciardi, C. Ziegler, K. G. Stassun, M. C. Johnson, J. D. Eastman, R. J. Siverd, T. G. Beatty, L. Bouma, T. Bedding, J. Pepper, J. Winn, M. B. Lund, S. Villanueva Jr., D. J. Stevens, Eric L.N. Jensen, C. Kilby, J. D. Crane, A. Tokovinin, M. E. Everett, C. G. Tinney, M. Fausnaugh, David H. Cohen, D. Bayliss, A. Bieryla, P. A. Cargile, K. A. Collins, D. M. Conti, K. D. Colón, I. A. Curtis, D. L. Depoy, P. Evans, D. L. Feliz, J. Gregorio, J. Rothenberg, D. J. James, M. D. Joner, R. B. Kuhn, M. Manner, S. Khakpash, J. L. Marshall, K. K. Mcleod, M. T. Penny, P. A. Reed, H. M. Relles, D. C. Stephens, C. Stockdale, M. Trueblood, P. Trueblood, X. Yao, R. Zambelli, R. Vanderspek, S. Seager, J. M. Jenkins, T. J. Henry, H.-S. James, W.-C. Jao, S. X. Wang, P. Butler, I. Thompson, S. Schectman, R. Wittenmyer, B. P. Bowler, J. Horner, S. R. Kane, M. W. Mengel, T. D. Morton, J. Okumura, P. Plavchan, H. Zhang, N. J. Scott, R. A. Matson, A. W. Mann, D. Dragomir, M. Günther, E. B. Ting, A. Glidden, E. V. Quintana Sep 2020

Kelt-25 B And Kelt-26 B: A Hot Jupiter And A Substellar Companion Transiting Young A Stars Observed By Tess, R. R. Martínez, R. R. Martínez, B. S. Gaudi, J. E. Rodriguez, G. Zhou, J. Labadie-Bartz, S. N. Quinn, K. Penev, T.-G. Tan, D. W. Latham, L. A. Paredes, J. F. Kielkopf, B. Addison, D. J. Wright, J. Teske, S. B. Howell, D. Ciardi, C. Ziegler, K. G. Stassun, M. C. Johnson, J. D. Eastman, R. J. Siverd, T. G. Beatty, L. Bouma, T. Bedding, J. Pepper, J. Winn, M. B. Lund, S. Villanueva Jr., D. J. Stevens, Eric L.N. Jensen, C. Kilby, J. D. Crane, A. Tokovinin, M. E. Everett, C. G. Tinney, M. Fausnaugh, David H. Cohen, D. Bayliss, A. Bieryla, P. A. Cargile, K. A. Collins, D. M. Conti, K. D. Colón, I. A. Curtis, D. L. Depoy, P. Evans, D. L. Feliz, J. Gregorio, J. Rothenberg, D. J. James, M. D. Joner, R. B. Kuhn, M. Manner, S. Khakpash, J. L. Marshall, K. K. Mcleod, M. T. Penny, P. A. Reed, H. M. Relles, D. C. Stephens, C. Stockdale, M. Trueblood, P. Trueblood, X. Yao, R. Zambelli, R. Vanderspek, S. Seager, J. M. Jenkins, T. J. Henry, H.-S. James, W.-C. Jao, S. X. Wang, P. Butler, I. Thompson, S. Schectman, R. Wittenmyer, B. P. Bowler, J. Horner, S. R. Kane, M. W. Mengel, T. D. Morton, J. Okumura, P. Plavchan, H. Zhang, N. J. Scott, R. A. Matson, A. W. Mann, D. Dragomir, M. Günther, E. B. Ting, A. Glidden, E. V. Quintana

Physics & Astronomy Faculty Works

We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A stars. The transit signals were initially detected by the KELT survey and subsequently confirmed by Transiting Exoplanet Survey Satellite (TESS) photometry. KELT-25 b is on a 4.40 day orbit around the V = 9.66 star CD-24 5016 (${T}_{\mathrm{eff}}={8280}_{-180}^{+440}$ K, Msstarf = ${2.18}_{-0.11}^{+0.12}$ M⊙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (${T}_{\mathrm{eff}}$ = ${8640}_{-240}^{+500}$K, Msstarf = ${1.93}_{-0.16}^{+0.14}$M⊙), which is likely an Am star. We have confirmed the …


Tess Reveals A Short-Period Sub-Neptune Sibling (Hd 86226c) To A Known Long-Period Giant Planet, J. Teske, M. R. Díaz, R. Luque, T. Močnik, J. V. Seidel, J. F. Otegi, F. Feng, J. S. Jenkins, E. Pallè, D. Ségransan, S. Udry, K. A. Collins, J. D. Eastman, G. R. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, D. R. Anderson, T. Barclay, F. Bouchy, J. A. Burt, R. P. Butler, D. A. Caldwell, K. I. Collins, J. D. Crane, C. Dorn, E. Flowers, J. Haldemann, R. Helled, C. Hellier, Eric L.N. Jensen, S. R. Kane, N. Law, J. J. Lissauer, A. W. Mann, M. Marmier, L. D. Nielsen, M. E. Rose, S. A. Shectman, A. Shporer, G. Torres, S. X. Wang, A. Wolfgang, I. Wong, C. Ziegler Aug 2020

Tess Reveals A Short-Period Sub-Neptune Sibling (Hd 86226c) To A Known Long-Period Giant Planet, J. Teske, M. R. Díaz, R. Luque, T. Močnik, J. V. Seidel, J. F. Otegi, F. Feng, J. S. Jenkins, E. Pallè, D. Ségransan, S. Udry, K. A. Collins, J. D. Eastman, G. R. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, D. R. Anderson, T. Barclay, F. Bouchy, J. A. Burt, R. P. Butler, D. A. Caldwell, K. I. Collins, J. D. Crane, C. Dorn, E. Flowers, J. Haldemann, R. Helled, C. Hellier, Eric L.N. Jensen, S. R. Kane, N. Law, J. J. Lissauer, A. W. Mann, M. Marmier, L. D. Nielsen, M. E. Rose, S. A. Shectman, A. Shporer, G. Torres, S. X. Wang, A. Wolfgang, I. Wong, C. Ziegler

Physics & Astronomy Faculty Works

The Transiting Exoplanet Survey Satellite mission was designed to find transiting planets around bright, nearby stars. Here, we present the detection and mass measurement of a small, short-period (≈4 days) transiting planet around the bright (V = 7.9), solar-type star HD 86226 (TOI-652, TIC 22221375), previously known to host a long-period (~1600 days) giant planet. HD 86226c (TOI-652.01) has a radius of 2.16 ± 0.08 R⊕ and a mass of ${7.25}_{-1.12}^{+1.19}$M⊕, based on archival and new radial velocity data. We also update the parameters of the longer-period, not-known-to-transit planet, and find it to be less eccentric and less massive than …