Advanced search
Start date
Betweenand
Related content
(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

Full text
Author(s):
Show less -
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:
Show less -
[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 Opportunities: Scholarships in Brazil - Post-Doctoral