A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266
Por:
Demory, B. -O., Pozuelos, F. J., Maqueo Chew, Y. Gomez, Sabin, L., Petrucci, R., Schroffenegger, U., Grimm, S. L., Sestovic, M., Gillon, M., McCormac, J., Barkaoui, K., Benz, W., Bieryla, A., Bouchy, F., Burdanov, A., Collins, K. A., de Wit, J., Dressing, C. D., Garcia, L. J., Giacalone, S., Guerra, P., Haldemann, J., Heng, K., Jehin, E., Jofre, E., Kane, S. R., Lillo-Box, J., Maigne, V., Mordasini, C., Morris, B. M., Niraula, P., Queloz, D., Rackham, B. V., Savel, A. B., Soubkiou, A., Srdoc, G., Stassun, K. G., Triaud, A. H. M. J., Zambelli, R., Ricker, G., Latham, D. W., Seager, S., Winn, J. N., Jenkins, J. M., Calvario-Velasquez, T., Franco Herrera, J. A., Colorado, E., Cadena Zepeda, E. O., Figueroa, L., Watson, A. M., Lugo-Ibarra, E. E., Carigi, L., Guisa, G., Herrera, J., Diaz, G. Sierra, Suarez, J. C., Barrado, D., Batalha, N. M., Benkhaldoun, Z., Chontos, A., Dai, F., Essack, Z., Ghachoui, M., Huang, C. X., Huber, D., Isaacson, H., Lissauer, J. J., Morales-Calderon, M., Robertson, P., Roy, A., Twicken, J. D., Vanderburg, A., Weiss, L. M.
Publicada:
2 oct 2020
Resumen:
We report the discovery and characterisation of a super-Earth and a
sub-Neptune transiting the bright (K = 8.8), quiet, and nearby (37 pc)
M3V dwarf TOI-1266. We validate the planetary nature of TOI-1266 b and c
using four sectors of TESS photometry and data from the
newly-commissioned 1-m SAINT-EX telescope located in San Pedro Martir
(Mexico). We also include additional ground-based follow-up photometry
as well as high-resolution spectroscopy and high-angular imaging
observations. The inner, larger planet has a radius of R =
2.37(-0.12)(+0.16) R-circle plus and an orbital period of 10.9 days. The
outer, smaller planet has a radius of R = 1.56(-0.13)(+0.15) R-circle
plus on an 18.8-day orbit. The data are found to be consistent with
circular, co-planar and stable orbits that are weakly influenced by the
2:1 mean motion resonance. Our TTV analysis of the combined dataset
enables model-independent constraints on the masses and eccentricities
of the planets. We find planetary masses of M-p = 13.5(-9.0)(+11.0)
M-circle plus (<36.8 M-circle plus at 2-sigma) for TOI-1266 b and
2.2(-1.5)(+2.0) M-circle plus (<5.7 M-circle plus at 2-sigma) for
TOI-1266 c. We find small but non-zero orbital eccentricities of
0.09(-0.05)(+0.06) (<0.21 at 2-sigma) for TOI-1266 b and 0.04 +/- 0.03
(<0.10 at 2-sigma) for TOI-1266 c. The equilibrium temperatures of both
planets are of 413 +/- 20 and 344 +/- 16 K, respectively, assuming a
null Bond albedo and uniform heat redistribution from the day-side to
the night-side hemisphere. The host brightness and negligible activity
combined with the planetary system architecture and favourable
planet-to-star radii ratios makes TOI-1266 an exquisite system for a
detailed characterisation.
Filiaciones:
Demory, B. -O.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Pozuelos, F. J.:
Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee 6 Aout 19C, B-4000 Liege, Belgium
Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
Maqueo Chew, Y. Gomez:
Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico
Sabin, L.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Petrucci, R.:
Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico
Univ Nacl Cordoba, Observ Astron Cordoba, Laprida 854,X5000BGR, Cordoba, Argentina
Consejo Nacl Invest Cient & Tecn CONICET, Buenos Aires, DF, Argentina
Schroffenegger, U.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Grimm, S. L.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Sestovic, M.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Gillon, M.:
Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
McCormac, J.:
Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England
Univ Warwick, Ctr Exoplanets & Habitabil, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England
Barkaoui, K.:
Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Oukaimeden Observ, Marrakech, Morocco
Benz, W.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Bieryla, A.:
Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
Bouchy, F.:
Univ Geneva, Observ Astron, 51 Chemin Maillettes, CH-1290 Versoix, Switzerland
Burdanov, A.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
Inst Astrofis Canarias, Via Lactea S-N, Tenerife 38205, Spain
Collins, K. A.:
Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
de Wit, J.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
Dressing, C. D.:
Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA
Garcia, L. J.:
Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
Giacalone, S.:
Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA
Guerra, P.:
Observ Astron Albanya, Cami Bassegoda S-N, Albanya 17733, Girona, Spain
Haldemann, J.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Heng, K.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England
Jehin, E.:
Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
Jofre, E.:
Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico
Univ Nacl Cordoba, Observ Astron Cordoba, Laprida 854,X5000BGR, Cordoba, Argentina
Consejo Nacl Invest Cient & Tecn CONICET, Buenos Aires, DF, Argentina
Kane, S. R.:
Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA
Lillo-Box, J.:
CSIC INTA, Ctr Astrobiol CAB, Dpto Astrofis, ESAC Campus, Villanueva De La Canada 28692, Madrid, Spain
Maigne, V.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Mordasini, C.:
Univ Bern, Phys Inst, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Morris, B. M.:
Univ Bern, Ctr Space & Habitabil, Gesellschaftsstr 6, CH-3012 Bern, Switzerland
Niraula, P.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
Queloz, D.:
Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
Rackham, B. V.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Savel, A. B.:
Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
Soubkiou, A.:
Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Oukaimeden Observ, Marrakech, Morocco
Srdoc, G.:
Kotizarovci Observ, Sarsoni 90, Viskovo 51216, Croatia
Stassun, K. G.:
Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA
Triaud, A. H. M. J.:
Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
Zambelli, R.:
Soc Astron Lunae, Via Montefrancio 77, Castelnuovo Magra, Italy
Ricker, G.:
MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Latham, D. W.:
Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
Seager, S.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Winn, J. N.:
Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
Jenkins, J. M.:
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
Calvario-Velasquez, T.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Franco Herrera, J. A.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Colorado, E.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Cadena Zepeda, E. O.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Figueroa, L.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Watson, A. M.:
Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico
Lugo-Ibarra, E. E.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Carigi, L.:
Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico
Guisa, G.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Herrera, J.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Diaz, G. Sierra:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22800, BC, Mexico
Suarez, J. C.:
Univ Granada, Dept Fis Teor & Cosmos, Campus Fuentenueva S-N, Granada 18071, Spain
Inst Astrofis Andalucia CSIC, Glorieta Astron S-N, Granada 18008, Spain
Barrado, D.:
CSIC INTA, Ctr Astrobiol CAB, Dpto Astrofis, ESAC Campus, Villanueva De La Canada 28692, Madrid, Spain
Batalha, N. M.:
Univ Calif Santa Cruz, Dept A&A, Santa Cruz, CA 95064 USA
Benkhaldoun, Z.:
Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Oukaimeden Observ, Marrakech, Morocco
Chontos, A.:
Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA
Dai, F.:
CALTECH, Div Geol & Planetary Sci, 1200 East Calif Blvd, Pasadena, CA 91125 USA
Essack, Z.:
MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Ghachoui, M.:
Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Oukaimeden Observ, Marrakech, Morocco
Huang, C. X.:
MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Huber, D.:
Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA
Isaacson, H.:
Univ Calif Berkeley, Dept Astron, 501 Campbell Hall, Berkeley, CA 94720 USA
Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld, Australia
Lissauer, J. J.:
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
Morales-Calderon, M.:
CSIC INTA, Ctr Astrobiol CAB, Dpto Astrofis, ESAC Campus, Villanueva De La Canada 28692, Madrid, Spain
Robertson, P.:
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
Roy, A.:
CALTECH, Div Geol & Planetary Sci, 1200 East Calif Blvd, Pasadena, CA 91125 USA
Twicken, J. D.:
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
SETI Inst, Mountain View, CA 94043 USA
Vanderburg, A.:
Univ Texas Austin, Dept Astron, Austin, TX 78712 USA
Weiss, L. M.:
Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA
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