Two Earth-size Planets and an Earth-size Candidate Transiting the nearby Star HD 101581

被引：0

作者：

Kunimoto, Michelle ^{[1
,2
,3
]}

Lin, Zifan ^{[4
]}

Millholland, Sarah ^{[5
]}

Venner, Alexander ^{[6
]}

Hinkel, Natalie R. ^{[7
]}

Shporer, Avi ^{[1
,2
]}

Vanderburg, Andrew ^{[1
,2
]}

Bailey, Jeremy ^{[8
]}

Brahm, Rafael ^{[9
,10
,11
]}

Burt, Jennifer A. ^{[12
]}

Butler, R. Paul ^{[13
]}

Carter, Brad ^{[6
]}

Ciardi, David R. ^{[14
]}

Collins, Karen A. ^{[15
]}

Collins, Kevin I. ^{[16
]}

Colon, Knicole D. ^{[17
]}

Crane, Jeffrey D. ^{[18
]}

Daylan, Tansu ^{[19
,20
]}

Diaz, Matias R. ^{[21
]}

Doty, John P. ^{[22
]}

Feng, Fabo ^{[23
,24
]}

Guenther, Eike W. ^{[25
]}

Horner, Jonathan ^{[6
]}

Howell, Steve B. ^{[26
]}

Janik, Jan ^{[27
]}

Jones, Hugh R. A. ^{[28
]}

Kabath, Petr ^{[29
]}

Kanodia, Shubham ^{[13
]}

Littlefield, Colin ^{[26
,30
]}

Osborn, Hugh P. ^{[31
,32
]}

O'Toole, Simon ^{[33
]}

Paegert, Martin ^{[15
]}

Pintr, Pavel ^{[34
]}

Schwarz, Richard P. ^{[15
]}

Shectman, Steve ^{[18
]}

Srdoc, Gregor ^{[35
]}

Stassun, Keivan G. ^{[36
]}

Teske, Johanna K. ^{[13
,18
,37
]}

Twicken, Joseph D. ^{[26
,38
]}

Vanzi, Leonardo ^{[39
,40
]}

Wang, Sharon X. ^{[41
]}

Wittenmyer, Robert A. ^{[6
]}

Jenkins, Jon M. ^{[26
]}

Ricker, George R. ^{[1
,2
]}

Seager, Sara ^{[1
,2
,4
,42
]}

Winn, Joshua ^{[43
]}

机构：

[1] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] MIT, Kavli Inst Astrophys & Space Res, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Univ British Columbia, Vancouver, BC, Canada

[4] MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[5] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[6] Univ Southern Queensland, Ctr Astrophys, USQ Toowoomba, West St, Toowoomba, Qld 4350, Australia

[7] Louisiana State Univ, Phys & Astron Dept, Baton Rouge, LA 70803 USA

[8] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia

[9] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ave Diagonal Torres 2640, Santiago, Chile

[10] Millennium Inst Astrophys, Santiago, Chile

[11] Data Observ Fdn, Santiago, Chile

[12] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[13] Carnegie Inst Sci, Earth & Planets Lab, 5241 Broad Branch Rd NW, Washington, DC 20015 USA

[14] Caltech, IPAC NExScI, M-S 100-22,770 S Wilson Ave, Pasadena, CA 91106 USA

[15] Harvard & Smithsonian, Cambridge, MA 02138 USA

[16] 4400 Univ Dr, Fairfax, VA 22030 USA

[17] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[18] Carnegie Inst Sci, Observ, 813 Santa Barbara St, Pasadena, CA 91101 USA

[19] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[20] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA

[21] Carnegie Inst Washington, Las Campanas Observ, Colina El Pino, Casilla 601, La Serena, Chile

[22] Noqsi Aerosp Ltd, 15 Blanchard Ave, Billerica, MA 01821 USA

[23] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 201210, Peoples R China

[24] Shanghai Jiao Tong Univ, Sch Phys & Astron, People's Republ China, Shanghai 201210, Peoples R China

[25] Thueringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany

[26] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[27] Masaryk Univ, Fac Sci, Dept Theoret Phys & Astrophys, Kotlarska 2, CZ-61137 Brno, Czech Republic

[28] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, England

[29] Czech Acad Sci, Astron Inst, Fricova 298, Ondrejov 25165, Czech Republic

[30] Bay Area Environm Res Inst, Moffett Field, CA 94035 USA

[31] Univ Bern, Phys Inst, Gesellsschaftstr 6, CH-3012 Bern, Switzerland

[32] Swiss Fed Inst Technol, Dept Phys, Wolfgang Pauli Str 2, CH-8093 Zurich, Switzerland

[33] Macquarie Univ, Australian Astron Opt, N Ryde, NSW 1670, Australia

[34] Czech Acad Sci, Inst Plasma Phys, Slovanky 2525-1a, Prague 8, Czech Republic

[35] Kotizarovci Observ, Sarsoni 90, Viskovo 51216, Croatia

[36] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[37] Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA

[38] SETI Inst, Mountain View, CA 94043 USA

[39] Pontificia Univ Catolica Chile, Dept Elect Engn, Ave Vicuna Mackenna 4860, Santiago, Chile

[40] Pontificia Univ Catolica Chile, Ctr Astroengn, Ave Vicuna Mackenna 4860, Santiago, Chile

[41] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China

[42] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA

[43] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08540 USA

来源：

ASTRONOMICAL JOURNAL | 2025年 / 169卷 / 01期

基金：

瑞士国家科学基金会; 澳大利亚研究理事会; 美国国家航空航天局;

关键词：

HIPPARCOS-GAIA CATALOG; STELLAR EVOLUTION CODE; TESS OBJECTS; ROTATION PERIODS; ERROR-CORRECTION; MESA ISOCHRONES; I-ARCHITECTURE; SUPER-EARTH; SYSTEM; SOLAR;

D O I：

10.3847/1538-3881/ad9266

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the validation of multiple planets transiting the nearby (d = 12.8 pc) K5V dwarf HD 101581 (GJ 435, TOI-6276, TIC 397362481). This system consists of at least two Earth-size planets whose orbits are near a mutual 4:3 mean-motion resonance, HD 101581 b ( R-p=0.956(-0.061)(+0.063 )R(circle plus) , P = 4.47 days) and HD 101581c ( R-p=0.990(-0.070)(+0.070 )R(circle plus) , P = 6.21 days). Both planets were discovered in Sectors 63 and 64 TESS observations and statistically validated with supporting ground-based follow-up. We also identify a signal that probably originates from a third transiting planet, TOI-6276.03 ( R-p=0.982(-0.098)(+0.114 )R(circle plus), P = 7.87 days). These planets are remarkably uniform in size and their orbits are evenly spaced, representing a prime example of the "peas-in-a-pod" architecture seen in other compact multiplanet systems. At V = 7.77, HD 101581 is the brightest star known to host multiple transiting planets smaller than 1.5 R (circle plus). HD 101581 is a promising system for atmospheric characterization and comparative planetology of small planets.

引用

页数：19

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