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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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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Author(s):
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Martinez, Romy Rodriguez [1] ; Gaudi, B. Scott [1] ; Rodriguez, Joseph E. [2] ; Zhou, George [2] ; Labadie-Bartz, Jonathan [3] ; Quinn, Samuel N. [2] ; Penev, Kaloyan [4] ; Tan, Thiam-Guan [5] ; Latham, David W. [2] ; Paredes, Leonardo A. [6] ; Kielkopf, John F. [7] ; Addison, Brett [8] ; Wright, Duncan J. [8] ; Teske, Johanna [9] ; Howell, Steve B. [10] ; Ciardi, David [11] ; Ziegler, Carl [12] ; Stassun, Keivan G. [13, 14] ; Johnson, Marshall C. [15] ; Eastman, Jason D. [2] ; Siverd, Robert J. [16] ; Beatty, Thomas G. [17, 18] ; Bouma, Luke [19] ; Bedding, Timothy [20] ; Pepper, Joshua [21] ; Winn, Joshua [19] ; Lund, Michael B. [11] ; Villanueva, Jr., Steven [22, 23] ; Stevens, Daniel J. [24, 25] ; Jensen, Eric L. N. [26] ; Kilby, Coleman [26] ; Crane, Jeffrey D. [27, 9] ; Tokovinin, Andrei [28] ; Everett, Mark E. [29] ; Tinney, C. G. [30] ; Fausnaugh, Michael [22, 23] ; Cohen, David H. [26] ; Bayliss, Daniel [31, 32] ; Bieryla, Allyson [2] ; Cargile, Phillip A. [2] ; Collins, Karen A. [2] ; Conti, Dennis M. [33] ; Colon, Knicole D. [34] ; Curtis, Ivan A. [35] ; Depoy, D. L. [36, 37] ; Evans, Phil [38] ; Feliz, Dax L. [13] ; Gregorio, Joao [39, 40] ; Rothenberg, Jason [41] ; James, David J. [2, 42] ; Joner, Michael D. [43] ; Kuhn, Rudolf B. [44, 45] ; Manner, Mark [46] ; Khakpash, Somayeh [21] ; Marshall, Jennifer L. [36, 37] ; McLeod, Kim K. [47] ; Penny, Matthew T. [48] ; Reed, Phillip A. [49] ; Relles, Howard M. [2] ; Stephens, Denise C. [43] ; Stockdale, Chris [50] ; Trueblood, Mark [51] ; Trueblood, Pat [51] ; Yao, Xinyu [21] ; Zambelli, Roberto [52] ; Vanderspek, Roland [22, 23] ; Seager, Sara [22, 23, 53, 54] ; Jenkins, Jon M. [10] ; Henry, Todd J. [6] ; James, Hodari-Sadiki [6] ; Jao, Wei-Chun [6] ; Wang, Sharon Xuesong [9] ; Butler, Paul [27] ; Thompson, Ian [9] ; Shectman, Stephen [9] ; Wittenmyer, Robert [8] ; Bowler, Brendan P. [55] ; Horner, Jonathan [8] ; Kane, Stephen R. [56] ; Mengel, Matthew W. [8] ; Morton, Timothy D. [57] ; Okumura, Jack [8] ; Plavchan, Peter [58] ; Zhang, Hui [59] ; Scott, Nicholas J. [10] ; Matson, Rachel A. [10] ; Mann, Andrew W. [60] ; Dragomir, Diana [61] ; Gunther, Max [22, 23] ; Ting, Eric B. [10] ; Glidden, Ana [22, 23] ; Quintana, V, Elisa
Total Authors: 92
Affiliation:
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[1] Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 - USA
[2] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 - USA
[3] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil
[4] Univ Texas Dallas, Dept Phys, 800 West Campbell Rd, Richardson, TX 75080 - USA
[5] Perth Exoplanet Survey Telescope, Perth, WA - Australia
[6] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 - USA
[7] Univ Louisville, Dept Phys & Astron, Louisville, KY 40292 - USA
[8] Univ Southern Queensland, Ctr Astrophys, West St, Toowoomba, Qld 4350 - Australia
[9] Carnegie Inst Sci, The Observatories, 813 Santa Barbara St, Pasadena, CA 91101 - USA
[10] NASA, Ames Res Ctr, Moffett Field, CA 94035 - USA
[11] CALTECH IPAC NASA Exoplanet Sci Inst, 1200 East Calif Ave, Pasadena, CA 91125 - USA
[12] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4 - Canada
[13] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 - USA
[14] Fisk Univ, Dept Phys, 1000 17th Ave North, Nashville, TN 37208 - USA
[15] Cumbres Observ, 6740 Cortona Dr, Suite 102, Goleta, CA 93117 - USA
[16] Northern Operat Ctr, Gemini Observ, 670 North Aohoku Pl, Hilo, HI 96720 - USA
[17] Univ Arizona, Steward Observ, Tucson, AZ 85721 - USA
[18] Univ Arizona, Dept Astron, Tucson, AZ 85721 - USA
[19] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 - USA
[20] Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006 - Australia
[21] Lehigh Univ, Dept Phys, 16 Mem Dr East, Bethlehem, PA 18015 - USA
[22] MIT, Dept Phys, Cambridge, MA 02139 - USA
[23] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 - USA
[24] Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 - USA
[25] Penn State Univ, Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 - USA
[26] Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 - USA
[27] Carnegie Inst Sci, Dept Terr Magnetism, 5241 Broad Branch Rd NW, Washington, DC 20015 - USA
[28] Cerro Tololo Interamer Observ, Casilla 603, La Serena - Chile
[29] Natl Opt Astron Observ, 950 North Cherry Ave, Tucson, AZ 85719 - USA
[30] UNSW Sydney, Sch Phys, Exoplanetary Sci UNSW, Sydney, NSW 2052 - Australia
[31] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands - England
[32] Univ Warwick, Ctr Exoplanets & Habitabil, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands - England
[33] Amer Assoc Variable Star Observers, 49 Bay State Rd, Cambridge, MA 02138 - USA
[34] V, NASA, Exoplanets & Stellar Astrophys Lab, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 - USA
[35] Ivan Curtis Private Observ, Adelaide, SA - Australia
[36] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 - USA
[37] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 - USA
[38] El Sauce Observ, Rio Hurtado, Coquimbo - Chile
[39] Atalaia Grp, Portalegre - Portugal
[40] CROW Observ, Portalegre - Portugal
[41] Univ Wyoming, Dept Phys & Astron, 1000 East Univ Ave, Dept 3905, Laramie, WY 82071 - USA
[42] Harvard Univ, Black Hole Initiat, 20 Garden St, Cambridge, MA 02138 - USA
[43] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 - USA
[44] South African Astron Observ, POB 9, ZA-7935 Cape Town - South Africa
[45] Southern African Large Telescope, POB 9, ZA-7935 Cape Town - South Africa
[46] Spot Observ, Nashville, TN 37206 - USA
[47] Wellesley Coll, Dept Astron, Wellesley, MA 02481 - USA
[48] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 - USA
[49] Kutztown State Univ, Dept Phys Sci, Kutztown, PA 19530 - USA
[50] Hazelwood Observ, Churchill, Vic - Australia
[51] Winer Observ, POB 797, Sonoita, AZ 85637 - USA
[52] Soc Astron Lunae, Gran Sasso - Italy
[53] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 - USA
[54] MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 - USA
[55] Univ Texas Austin, Dept Astron, Austin, TX 78712 - USA
[56] Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 - USA
[57] Univ Florida, Dept Astron, 211 Bryant Space Sci Ctr, Gainesville, FL 32611 - USA
[58] George Mason Univ, 4400 Univ Dr MS 3F3, Fairfax, VA 22030 - USA
[59] Nanjing Univ, Sch Astron & Space Sci, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210046, Jiangsu - Peoples R China
[60] Univ North Carolina Chapel Hill, Dept Phys & Astron, Chapel Hill, NC 27599 - USA
[61] Univ New Mexico, Dept Phys & Astron, 1919 Lomas Blvd NE, Albuquerque, NM 87131 - USA
Total Affiliations: 61
Document type: Journal article
Source: ASTRONOMICAL JOURNAL; v. 160, n. 3 SEP 2020.
Web of Science Citations: 0
Abstract

We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, TOI1337.01), 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-eff = 8280(-180)(+440) K, M-star = 2.18(-0.11)(+0.12) M-circle dot), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 (T-eff = 8640(-240)(+500) K, M-circle dot = 1.93(-0.16)(+0.14) M-circle dot), 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 3 sigma upper limit on the companion's mass of similar to 64 M-J. For KELT-26 b, we infer a planetary mass and radius of M-P = 1.41(-0.51)(+0.43) M-J 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. (AU)

FAPESP's process: 17/23731-1 - Analysis and Modeling of a Large Sample of Galactic Be Stars
Grantee:Jonathan Michael Labadie-Bartz
Support type: Scholarships in Brazil - Post-Doctorate