KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS

Romy Rodríguez Martínez; B. Scott Gaudi; Joseph E. Rodriguez; George Zhou; Jonathan Labadie-Bartz; Samuel N. Quinn; Kaloyan Penev; Thiam Guan Tan; David W. Latham; Leonardo A. Paredes; John F. Kielkopf; Brett Addison; Duncan J. Wright; Johanna Teske; Steve B. Howell; David Ciardi; Carl Ziegler; Keivan G. Stassun; Marshall C. Johnson; Jason D. Eastman; Robert J. Siverd; Thomas G. Beatty; Luke Bouma; Timothy Bedding; Joshua Pepper; Joshua Winn; Michael B. Lund; Steven Villanueva; Daniel J. Stevens; Eric L.N. Jensen; Coleman Kilby; Jeffrey D. Crane; Andrei Tokovinin; Mark E. Everett; C. G. Tinney; Michael Fausnaugh; David H. Cohen; Daniel Bayliss; Allyson Bieryla; Phillip A. Cargile; Karen A. Collins; Dennis M. Conti; Knicole D. Colón; Ivan A. Curtis; D. L. Depoy; Phil Evans; Dax L. Feliz; Joao Gregorio; Jason Rothenberg; David J. James; Michael D. Joner; Rudolf B. Kuhn; Mark Manner; Somayeh Khakpash; Jennifer L. Marshall; Kim K. Mcleod; Matthew T. Penny; Phillip A. Reed; Howard M. Relles; Denise C. Stephens; Chris Stockdale; Mark Trueblood; Pat Trueblood; Xinyu Yao; Roberto Zambelli; Roland Vanderspek; Sara Seager; Jon M. Jenkins; Todd J. Henry; Hodari Sadiki James; Wei Chun Jao; Sharon Xuesong Wang; Paul Butler; Ian Thompson; Stephen Shectman; Robert Wittenmyer; Brendan P. Bowler; Jonathan Horner; Stephen R. Kane; Matthew W. Mengel; Timothy D. Morton; Jack Okumura; Peter Plavchan; Hui Zhang; Nicholas J. Scott; Rachel A. Matson; Andrew W. Mann; Diana Dragomir; Max Günther; Eric B. Ting; Ana Glidden; Elisa V. Quintana

doi:10.3847/1538-3881/ab9f2d

KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS

Romy Rodríguez Martínez, B. Scott Gaudi, Joseph E. Rodriguez, George Zhou, Jonathan Labadie-Bartz, Samuel N. Quinn, Kaloyan Penev, Thiam Guan Tan, David W. Latham, Leonardo A. Paredes, John F. Kielkopf, Brett Addison, Duncan J. Wright, Johanna Teske, Steve B. Howell, David Ciardi, Carl Ziegler, Keivan G. Stassun, Marshall C. Johnson, Jason D. EastmanRobert J. Siverd, Thomas G. Beatty, Luke Bouma, Timothy Bedding, Joshua Pepper, Joshua Winn, Michael B. Lund, Steven Villanueva, Daniel J. Stevens, Eric L.N. Jensen, Coleman Kilby, Jeffrey D. Crane, Andrei Tokovinin, Mark E. Everett, C. G. Tinney, Michael Fausnaugh, David H. Cohen, Daniel Bayliss, Allyson Bieryla, Phillip A. Cargile, Karen A. Collins, Dennis M. Conti, Knicole D. Colón, Ivan A. Curtis, D. L. Depoy, Phil Evans, Dax L. Feliz, Joao Gregorio, Jason Rothenberg, David J. James, Michael D. Joner, Rudolf B. Kuhn, Mark Manner, Somayeh Khakpash, Jennifer L. Marshall, Kim K. Mcleod, Matthew T. Penny, Phillip A. Reed, Howard M. Relles, Denise C. Stephens, Chris Stockdale, Mark Trueblood, Pat Trueblood, Xinyu Yao, Roberto Zambelli, Roland Vanderspek, Sara Seager, Jon M. Jenkins, Todd J. Henry, Hodari Sadiki James, Wei Chun Jao, Sharon Xuesong Wang, Paul Butler, Ian Thompson, Stephen Shectman, Robert Wittenmyer, Brendan P. Bowler, Jonathan Horner, Stephen R. Kane, Matthew W. Mengel, Timothy D. Morton, Jack Okumura, Peter Plavchan, Hui Zhang, Nicholas J. Scott, Rachel A. Matson, Andrew W. Mann, Diana Dragomir, Max Günther, Eric B. Ting, Ana Glidden, Elisa V. Quintana

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16 Scopus citations

Abstract

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 (Teff=8280-180+440 K, M ∗ = 2.18-0.11+0.12 M o˙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (Teff = 8640-240+500 K, M ∗ = 1.93-0.16+0.14 M o˙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = 1.64-0.043+0.039 R J and a 3σ upper limit on the companion's mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = 1.41-0.51+0.43MJ and R P = 1.94-0.058+0.060 R J. From Doppler tomographic observations, we find KELT-26 b to reside in a highly misaligned orbit. This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data. KELT-25 b appears to be in a well-aligned, prograde orbit, and the system is likely a member of the cluster Theia 449.

Original language	English (US)
Article number	111
Journal	Astronomical Journal
Volume	160
Issue number	3
DOIs	https://doi.org/10.3847/1538-3881/ab9f2d
State	Published - Sep 2020

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-3881/ab9f2d

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Martínez, R. R., Gaudi, B. S., Rodriguez, J. E., Zhou, G., Labadie-Bartz, J., Quinn, S. N., Penev, K., Tan, T. G., Latham, D. W., Paredes, L. A., Kielkopf, J. F., Addison, B., Wright, D. J., Teske, J., Howell, S. B., Ciardi, D., Ziegler, C., Stassun, K. G., Johnson, M. C., ... Quintana, E. V. (2020). KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS. Astronomical Journal, 160(3), Article 111. https://doi.org/10.3847/1538-3881/ab9f2d

Martínez, RR, Gaudi, BS, Rodriguez, JE, Zhou, G, Labadie-Bartz, J, Quinn, SN, Penev, K, Tan, TG, Latham, DW, Paredes, LA, Kielkopf, JF, Addison, B, Wright, DJ, Teske, J, Howell, SB, Ciardi, D, Ziegler, C, Stassun, KG, Johnson, MC, Eastman, JD, Siverd, RJ, Beatty, TG, Bouma, L, Bedding, T, Pepper, J, Winn, J, Lund, MB, Villanueva, S, Stevens, DJ, Jensen, ELN, Kilby, C, Crane, JD, Tokovinin, A, Everett, ME, Tinney, CG, Fausnaugh, M, Cohen, DH, Bayliss, D, Bieryla, A, Cargile, PA, Collins, KA, Conti, DM, Colón, KD, Curtis, IA, Depoy, DL, Evans, P, Feliz, DL, Gregorio, J, Rothenberg, J, James, DJ, Joner, MD, Kuhn, RB, Manner, M, Khakpash, S, Marshall, JL, Mcleod, KK, Penny, MT, Reed, PA, Relles, HM, Stephens, DC, Stockdale, C, Trueblood, M, Trueblood, P, Yao, X, Zambelli, R, Vanderspek, R, Seager, S, Jenkins, JM, Henry, TJ, James, HS, Jao, WC, Wang, SX, Butler, P, Thompson, I, Shectman, S, Wittenmyer, R, Bowler, BP, Horner, J, Kane, SR, Mengel, MW, Morton, TD, Okumura, J, Plavchan, P, Zhang, H, Scott, NJ, Matson, RA, Mann, AW, Dragomir, D, Günther, M, Ting, EB, Glidden, A & Quintana, EV 2020, 'KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS', Astronomical Journal, vol. 160, no. 3, 111. https://doi.org/10.3847/1538-3881/ab9f2d

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title = "KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS",

abstract = "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 (Teff=8280-180+440 K, M ∗ = 2.18-0.11+0.12 M o˙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (Teff = 8640-240+500 K, M ∗ = 1.93-0.16+0.14 M o˙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = 1.64-0.043+0.039 R J and a 3σ upper limit on the companion's mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = 1.41-0.51+0.43MJ and R P = 1.94-0.058+0.060 R J. From Doppler tomographic observations, we find KELT-26 b to reside in a highly misaligned orbit. This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data. KELT-25 b appears to be in a well-aligned, prograde orbit, and the system is likely a member of the cluster Theia 449.",

author = "Mart{\'i}nez, {Romy Rodr{\'i}guez} and Gaudi, {B. Scott} and Rodriguez, {Joseph E.} and George Zhou and Jonathan Labadie-Bartz and Quinn, {Samuel N.} and Kaloyan Penev and Tan, {Thiam Guan} and Latham, {David W.} and Paredes, {Leonardo A.} and Kielkopf, {John F.} and Brett Addison and Wright, {Duncan J.} and Johanna Teske and Howell, {Steve B.} and David Ciardi and Carl Ziegler and Stassun, {Keivan G.} and Johnson, {Marshall C.} and Eastman, {Jason D.} and Siverd, {Robert J.} and Beatty, {Thomas G.} and Luke Bouma and Timothy Bedding and Joshua Pepper and Joshua Winn and Lund, {Michael B.} and Steven Villanueva and Stevens, {Daniel J.} and Jensen, {Eric L.N.} and Coleman Kilby and Crane, {Jeffrey D.} and Andrei Tokovinin and Everett, {Mark E.} and Tinney, {C. G.} and Michael Fausnaugh and Cohen, {David H.} and Daniel Bayliss and Allyson Bieryla and Cargile, {Phillip A.} and Collins, {Karen A.} and Conti, {Dennis M.} and Col{\'o}n, {Knicole D.} and Curtis, {Ivan A.} and Depoy, {D. L.} and Phil Evans and Feliz, {Dax L.} and Joao Gregorio and Jason Rothenberg and James, {David J.} and Joner, {Michael D.} and Kuhn, {Rudolf B.} and Mark Manner and Somayeh Khakpash and Marshall, {Jennifer L.} and Mcleod, {Kim K.} and Penny, {Matthew T.} and Reed, {Phillip A.} and Relles, {Howard M.} and Stephens, {Denise C.} and Chris Stockdale and Mark Trueblood and Pat Trueblood and Xinyu Yao and Roberto Zambelli and Roland Vanderspek and Sara Seager and Jenkins, {Jon M.} and Henry, {Todd J.} and James, {Hodari Sadiki} and Jao, {Wei Chun} and Wang, {Sharon Xuesong} and Paul Butler and Ian Thompson and Stephen Shectman and Robert Wittenmyer and Bowler, {Brendan P.} and Jonathan Horner and Kane, {Stephen R.} and Mengel, {Matthew W.} and Morton, {Timothy D.} and Jack Okumura and Peter Plavchan and Hui Zhang and Scott, {Nicholas J.} and Matson, {Rachel A.} and Mann, {Andrew W.} and Diana Dragomir and Max G{\"u}nther and Ting, {Eric B.} and Ana Glidden and Quintana, {Elisa V.}",

note = "Publisher Copyright: {\textcopyright} 2020. The Author(s). Published by the American Astronomical Society.",

year = "2020",

month = sep,

doi = "10.3847/1538-3881/ab9f2d",

language = "English (US)",

volume = "160",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "3",

}

TY - JOUR

T1 - KELT-25 b and KELT-26 b

T2 - A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS

AU - Martínez, Romy Rodríguez

AU - Gaudi, B. Scott

AU - Rodriguez, Joseph E.

AU - Zhou, George

AU - Labadie-Bartz, Jonathan

AU - Quinn, Samuel N.

AU - Penev, Kaloyan

AU - Tan, Thiam Guan

AU - Latham, David W.

AU - Paredes, Leonardo A.

AU - Kielkopf, John F.

AU - Addison, Brett

AU - Wright, Duncan J.

AU - Teske, Johanna

AU - Howell, Steve B.

AU - Ciardi, David

AU - Ziegler, Carl

AU - Stassun, Keivan G.

AU - Johnson, Marshall C.

AU - Eastman, Jason D.

AU - Siverd, Robert J.

AU - Beatty, Thomas G.

AU - Bouma, Luke

AU - Bedding, Timothy

AU - Pepper, Joshua

AU - Winn, Joshua

AU - Lund, Michael B.

AU - Villanueva, Steven

AU - Stevens, Daniel J.

AU - Jensen, Eric L.N.

AU - Kilby, Coleman

AU - Crane, Jeffrey D.

AU - Tokovinin, Andrei

AU - Everett, Mark E.

AU - Tinney, C. G.

AU - Fausnaugh, Michael

AU - Cohen, David H.

AU - Bayliss, Daniel

AU - Bieryla, Allyson

AU - Cargile, Phillip A.

AU - Collins, Karen A.

AU - Conti, Dennis M.

AU - Colón, Knicole D.

AU - Curtis, Ivan A.

AU - Depoy, D. L.

AU - Evans, Phil

AU - Feliz, Dax L.

AU - Gregorio, Joao

AU - Rothenberg, Jason

AU - James, David J.

AU - Joner, Michael D.

AU - Kuhn, Rudolf B.

AU - Manner, Mark

AU - Khakpash, Somayeh

AU - Marshall, Jennifer L.

AU - Mcleod, Kim K.

AU - Penny, Matthew T.

AU - Reed, Phillip A.

AU - Relles, Howard M.

AU - Stephens, Denise C.

AU - Stockdale, Chris

AU - Trueblood, Mark

AU - Trueblood, Pat

AU - Yao, Xinyu

AU - Zambelli, Roberto

AU - Vanderspek, Roland

AU - Seager, Sara

AU - Jenkins, Jon M.

AU - Henry, Todd J.

AU - James, Hodari Sadiki

AU - Jao, Wei Chun

AU - Wang, Sharon Xuesong

AU - Butler, Paul

AU - Thompson, Ian

AU - Shectman, Stephen

AU - Wittenmyer, Robert

AU - Bowler, Brendan P.

AU - Horner, Jonathan

AU - Kane, Stephen R.

AU - Mengel, Matthew W.

AU - Morton, Timothy D.

AU - Okumura, Jack

AU - Plavchan, Peter

AU - Zhang, Hui

AU - Scott, Nicholas J.

AU - Matson, Rachel A.

AU - Mann, Andrew W.

AU - Dragomir, Diana

AU - Günther, Max

AU - Ting, Eric B.

AU - Glidden, Ana

AU - Quintana, Elisa V.

PY - 2020/9

Y1 - 2020/9

N2 - 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 (Teff=8280-180+440 K, M ∗ = 2.18-0.11+0.12 M o˙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (Teff = 8640-240+500 K, M ∗ = 1.93-0.16+0.14 M o˙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = 1.64-0.043+0.039 R J and a 3σ upper limit on the companion's mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = 1.41-0.51+0.43MJ and R P = 1.94-0.058+0.060 R J. From Doppler tomographic observations, we find KELT-26 b to reside in a highly misaligned orbit. This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data. KELT-25 b appears to be in a well-aligned, prograde orbit, and the system is likely a member of the cluster Theia 449.

AB - 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 (Teff=8280-180+440 K, M ∗ = 2.18-0.11+0.12 M o˙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (Teff = 8640-240+500 K, M ∗ = 1.93-0.16+0.14 M o˙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = 1.64-0.043+0.039 R J and a 3σ upper limit on the companion's mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = 1.41-0.51+0.43MJ and R P = 1.94-0.058+0.060 R J. From Doppler tomographic observations, we find KELT-26 b to reside in a highly misaligned orbit. This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data. KELT-25 b appears to be in a well-aligned, prograde orbit, and the system is likely a member of the cluster Theia 449.

UR - http://www.scopus.com/inward/record.url?scp=85091060465&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85091060465&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ab9f2d

DO - 10.3847/1538-3881/ab9f2d

M3 - Article

AN - SCOPUS:85091060465

SN - 0004-6256

VL - 160

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

M1 - 111

ER -

KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS

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RI light curve of KELT-25 and KELT-26

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KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS

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ASJC Scopus subject areas

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RI light curve of KELT-25 and KELT-26

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