Aarhus University Seal / Aarhus Universitets segl

Anders Zinck Justesen

Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

Three planets transiting the evolved star EPIC 249893012 : A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes. / Hidalgo, D.; Pallé, E.; Alonso, R.; Alonso, R.; Gandolfi, D.; Nowak, G.; Luque, R.; Luque, R.; Hirano, T.; Justesen, A. B.; Cochran, W. D.; Barragán, O.; Spina, L.; Rodler, F.; Albrecht, S.; Anderson, D.; Amado, P.; Bryant, E.; Caballero, J. A.; Cabrera, J.; Csizmadia, Sz; Dai, F.; Deeg, H. J.; Deeg, H. J.; Eigmuller, Ph; Endl, M.; Erikson, A.; Esposito, M.; Figueira, P.; Georgieva, I.; Grziwa, S.; Guenther, E.; Hatzes, A. P.; Hjorth, M.; Hoeijmakers, H. J.; Kabath, P.; Korth, J.; Kuzuhara, M.; Lafarga, M.; Lampon, M.; Leão, I. C.; Livingston, J.; Mathur, S.; Montañes-Rodriguez, P.; Morales, J. C.; Murgas, F.; Nagel, E.; Narita, N.; Nielsen, L. D.; Patzold, M.; Persson, C. M.; Prieto-Arranz, J.; Quirrenbach, A.; Rauer, H.; Redfield, S.; Reiners, A.; Ribas, I.; Smith, A. M.S.; Šubjak, J.; Van Eylen, V.; Wilson, P. A.

I: Astronomy and Astrophysics, Bind 636, A89, 04.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Hidalgo, D, Pallé, E, Alonso, R, Alonso, R, Gandolfi, D, Nowak, G, Luque, R, Luque, R, Hirano, T, Justesen, AB, Cochran, WD, Barragán, O, Spina, L, Rodler, F, Albrecht, S, Anderson, D, Amado, P, Bryant, E, Caballero, JA, Cabrera, J, Csizmadia, S, Dai, F, Deeg, HJ, Deeg, HJ, Eigmuller, P, Endl, M, Erikson, A, Esposito, M, Figueira, P, Georgieva, I, Grziwa, S, Guenther, E, Hatzes, AP, Hjorth, M, Hoeijmakers, HJ, Kabath, P, Korth, J, Kuzuhara, M, Lafarga, M, Lampon, M, Leão, IC, Livingston, J, Mathur, S, Montañes-Rodriguez, P, Morales, JC, Murgas, F, Nagel, E, Narita, N, Nielsen, LD, Patzold, M, Persson, CM, Prieto-Arranz, J, Quirrenbach, A, Rauer, H, Redfield, S, Reiners, A, Ribas, I, Smith, AMS, Šubjak, J, Van Eylen, V & Wilson, PA 2020, 'Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes', Astronomy and Astrophysics, bind 636, A89. https://doi.org/10.1051/0004-6361/201937080

APA

Hidalgo, D., Pallé, E., Alonso, R., Alonso, R., Gandolfi, D., Nowak, G., Luque, R., Luque, R., Hirano, T., Justesen, A. B., Cochran, W. D., Barragán, O., Spina, L., Rodler, F., Albrecht, S., Anderson, D., Amado, P., Bryant, E., Caballero, J. A., ... Wilson, P. A. (2020). Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes. Astronomy and Astrophysics, 636, [A89]. https://doi.org/10.1051/0004-6361/201937080

CBE

Hidalgo D, Pallé E, Alonso R, Alonso R, Gandolfi D, Nowak G, Luque R, Luque R, Hirano T, Justesen AB, Cochran WD, Barragán O, Spina L, Rodler F, Albrecht S, Anderson D, Amado P, Bryant E, Caballero JA, Cabrera J, Csizmadia S, Dai F, Deeg HJ, Deeg HJ, Eigmuller P, Endl M, Erikson A, Esposito M, Figueira P, Georgieva I, Grziwa S, Guenther E, Hatzes AP, Hjorth M, Hoeijmakers HJ, Kabath P, Korth J, Kuzuhara M, Lafarga M, Lampon M, Leão IC, Livingston J, Mathur S, Montañes-Rodriguez P, Morales JC, Murgas F, Nagel E, Narita N, Nielsen LD, Patzold M, Persson CM, Prieto-Arranz J, Quirrenbach A, Rauer H, Redfield S, Reiners A, Ribas I, Smith AMS, Šubjak J, Van Eylen V, Wilson PA. 2020. Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes. Astronomy and Astrophysics. 636:Article A89. https://doi.org/10.1051/0004-6361/201937080

MLA

Vancouver

Hidalgo D, Pallé E, Alonso R, Alonso R, Gandolfi D, Nowak G o.a. Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes. Astronomy and Astrophysics. 2020 apr;636. A89. https://doi.org/10.1051/0004-6361/201937080

Author

Hidalgo, D. ; Pallé, E. ; Alonso, R. ; Alonso, R. ; Gandolfi, D. ; Nowak, G. ; Luque, R. ; Luque, R. ; Hirano, T. ; Justesen, A. B. ; Cochran, W. D. ; Barragán, O. ; Spina, L. ; Rodler, F. ; Albrecht, S. ; Anderson, D. ; Amado, P. ; Bryant, E. ; Caballero, J. A. ; Cabrera, J. ; Csizmadia, Sz ; Dai, F. ; Deeg, H. J. ; Deeg, H. J. ; Eigmuller, Ph ; Endl, M. ; Erikson, A. ; Esposito, M. ; Figueira, P. ; Georgieva, I. ; Grziwa, S. ; Guenther, E. ; Hatzes, A. P. ; Hjorth, M. ; Hoeijmakers, H. J. ; Kabath, P. ; Korth, J. ; Kuzuhara, M. ; Lafarga, M. ; Lampon, M. ; Leão, I. C. ; Livingston, J. ; Mathur, S. ; Montañes-Rodriguez, P. ; Morales, J. C. ; Murgas, F. ; Nagel, E. ; Narita, N. ; Nielsen, L. D. ; Patzold, M. ; Persson, C. M. ; Prieto-Arranz, J. ; Quirrenbach, A. ; Rauer, H. ; Redfield, S. ; Reiners, A. ; Ribas, I. ; Smith, A. M.S. ; Šubjak, J. ; Van Eylen, V. ; Wilson, P. A. / Three planets transiting the evolved star EPIC 249893012 : A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes. I: Astronomy and Astrophysics. 2020 ; Bind 636.

Bibtex

@article{f929a75500d24511bf41ee0edff294a8,
title = "Three planets transiting the evolved star EPIC 249893012: A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes",
abstract = "We report the discovery of a new planetary system with three transiting planets, one super-Earth and two sub-Neptunes, that orbit EPIC 249893012, a G8 IV-V evolved star (M = 1.05 ± 0.05 M, R = 1.71 ± 0.04 R, Teff = 5430 ± 85 K). The star is just leaving the main sequence. We combined K2 photometry with IRCS adaptive-optics imaging and HARPS, HARPS-N, and CARMENES high-precision radial velocity measurements to confirm the planetary system, determine the stellar parameters, and measure radii, masses, and densities of the three planets. With an orbital period of 3.5949-0.0007+0.0007 days, a mass of 8.75-1.08+1.09 M, and a radius of 1.95-0.08+0.09 R, the inner planet b is compatible with nickel-iron core and a silicate mantle (ρb = 6.39-1.04+1.19 g cm-3). Planets c and d with orbital periods of 15.624-0.001+0.001 and 35.747-0.005+0.005 days, respectively, have masses and radii of 14.67-1.89+1,84 M and 3.67-0.14+0.17 R and 10.18-2.42+2.46 M and 3.94-0.12+0.13 R, respectively, yielding a mean density of 1.62-0.29+0.30 and 0.91-0.23+0.25 g cm-3, respectively. The radius of planet b lies in the transition region between rocky and gaseous planets, but its density is consistent with a rocky composition. Its semimajor axis and the corresponding photoevaporation levels to which the planet has been exposed might explain its measured density today. In contrast, the densities and semimajor axes of planets c and d suggest a very thick atmosphere. The singularity of this system, which orbits a slightly evolved star that is just leaving the main sequence, makes it a good candidate for a deeper study from a dynamical point of view.",
keywords = "Planetary systems, Planets and satellites: detection, Planets and satellites: fundamental parameters, Techniques: photometric, Techniques: radial velocities",
author = "D. Hidalgo and E. Pall{\'e} and R. Alonso and R. Alonso and D. Gandolfi and G. Nowak and R. Luque and R. Luque and T. Hirano and Justesen, {A. B.} and Cochran, {W. D.} and O. Barrag{\'a}n and L. Spina and F. Rodler and S. Albrecht and D. Anderson and P. Amado and E. Bryant and Caballero, {J. A.} and J. Cabrera and Sz Csizmadia and F. Dai and Deeg, {H. J.} and Deeg, {H. J.} and Ph Eigmuller and M. Endl and A. Erikson and M. Esposito and P. Figueira and I. Georgieva and S. Grziwa and E. Guenther and Hatzes, {A. P.} and M. Hjorth and Hoeijmakers, {H. J.} and P. Kabath and J. Korth and M. Kuzuhara and M. Lafarga and M. Lampon and Le{\~a}o, {I. C.} and J. Livingston and S. Mathur and P. Monta{\~n}es-Rodriguez and Morales, {J. C.} and F. Murgas and E. Nagel and N. Narita and Nielsen, {L. D.} and M. Patzold and Persson, {C. M.} and J. Prieto-Arranz and A. Quirrenbach and H. Rauer and S. Redfield and A. Reiners and I. Ribas and Smith, {A. M.S.} and J. {\v S}ubjak and {Van Eylen}, V. and Wilson, {P. A.}",
year = "2020",
month = apr,
doi = "10.1051/0004-6361/201937080",
language = "English",
volume = "636",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - Three planets transiting the evolved star EPIC 249893012

T2 - A hot 8.8-M super-Earth and two warm 14.7 and 10.2-M sub-Neptunes

AU - Hidalgo, D.

AU - Pallé, E.

AU - Alonso, R.

AU - Alonso, R.

AU - Gandolfi, D.

AU - Nowak, G.

AU - Luque, R.

AU - Luque, R.

AU - Hirano, T.

AU - Justesen, A. B.

AU - Cochran, W. D.

AU - Barragán, O.

AU - Spina, L.

AU - Rodler, F.

AU - Albrecht, S.

AU - Anderson, D.

AU - Amado, P.

AU - Bryant, E.

AU - Caballero, J. A.

AU - Cabrera, J.

AU - Csizmadia, Sz

AU - Dai, F.

AU - Deeg, H. J.

AU - Deeg, H. J.

AU - Eigmuller, Ph

AU - Endl, M.

AU - Erikson, A.

AU - Esposito, M.

AU - Figueira, P.

AU - Georgieva, I.

AU - Grziwa, S.

AU - Guenther, E.

AU - Hatzes, A. P.

AU - Hjorth, M.

AU - Hoeijmakers, H. J.

AU - Kabath, P.

AU - Korth, J.

AU - Kuzuhara, M.

AU - Lafarga, M.

AU - Lampon, M.

AU - Leão, I. C.

AU - Livingston, J.

AU - Mathur, S.

AU - Montañes-Rodriguez, P.

AU - Morales, J. C.

AU - Murgas, F.

AU - Nagel, E.

AU - Narita, N.

AU - Nielsen, L. D.

AU - Patzold, M.

AU - Persson, C. M.

AU - Prieto-Arranz, J.

AU - Quirrenbach, A.

AU - Rauer, H.

AU - Redfield, S.

AU - Reiners, A.

AU - Ribas, I.

AU - Smith, A. M.S.

AU - Šubjak, J.

AU - Van Eylen, V.

AU - Wilson, P. A.

PY - 2020/4

Y1 - 2020/4

N2 - We report the discovery of a new planetary system with three transiting planets, one super-Earth and two sub-Neptunes, that orbit EPIC 249893012, a G8 IV-V evolved star (M = 1.05 ± 0.05 M, R = 1.71 ± 0.04 R, Teff = 5430 ± 85 K). The star is just leaving the main sequence. We combined K2 photometry with IRCS adaptive-optics imaging and HARPS, HARPS-N, and CARMENES high-precision radial velocity measurements to confirm the planetary system, determine the stellar parameters, and measure radii, masses, and densities of the three planets. With an orbital period of 3.5949-0.0007+0.0007 days, a mass of 8.75-1.08+1.09 M, and a radius of 1.95-0.08+0.09 R, the inner planet b is compatible with nickel-iron core and a silicate mantle (ρb = 6.39-1.04+1.19 g cm-3). Planets c and d with orbital periods of 15.624-0.001+0.001 and 35.747-0.005+0.005 days, respectively, have masses and radii of 14.67-1.89+1,84 M and 3.67-0.14+0.17 R and 10.18-2.42+2.46 M and 3.94-0.12+0.13 R, respectively, yielding a mean density of 1.62-0.29+0.30 and 0.91-0.23+0.25 g cm-3, respectively. The radius of planet b lies in the transition region between rocky and gaseous planets, but its density is consistent with a rocky composition. Its semimajor axis and the corresponding photoevaporation levels to which the planet has been exposed might explain its measured density today. In contrast, the densities and semimajor axes of planets c and d suggest a very thick atmosphere. The singularity of this system, which orbits a slightly evolved star that is just leaving the main sequence, makes it a good candidate for a deeper study from a dynamical point of view.

AB - We report the discovery of a new planetary system with three transiting planets, one super-Earth and two sub-Neptunes, that orbit EPIC 249893012, a G8 IV-V evolved star (M = 1.05 ± 0.05 M, R = 1.71 ± 0.04 R, Teff = 5430 ± 85 K). The star is just leaving the main sequence. We combined K2 photometry with IRCS adaptive-optics imaging and HARPS, HARPS-N, and CARMENES high-precision radial velocity measurements to confirm the planetary system, determine the stellar parameters, and measure radii, masses, and densities of the three planets. With an orbital period of 3.5949-0.0007+0.0007 days, a mass of 8.75-1.08+1.09 M, and a radius of 1.95-0.08+0.09 R, the inner planet b is compatible with nickel-iron core and a silicate mantle (ρb = 6.39-1.04+1.19 g cm-3). Planets c and d with orbital periods of 15.624-0.001+0.001 and 35.747-0.005+0.005 days, respectively, have masses and radii of 14.67-1.89+1,84 M and 3.67-0.14+0.17 R and 10.18-2.42+2.46 M and 3.94-0.12+0.13 R, respectively, yielding a mean density of 1.62-0.29+0.30 and 0.91-0.23+0.25 g cm-3, respectively. The radius of planet b lies in the transition region between rocky and gaseous planets, but its density is consistent with a rocky composition. Its semimajor axis and the corresponding photoevaporation levels to which the planet has been exposed might explain its measured density today. In contrast, the densities and semimajor axes of planets c and d suggest a very thick atmosphere. The singularity of this system, which orbits a slightly evolved star that is just leaving the main sequence, makes it a good candidate for a deeper study from a dynamical point of view.

KW - Planetary systems

KW - Planets and satellites: detection

KW - Planets and satellites: fundamental parameters

KW - Techniques: photometric

KW - Techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85084414220&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201937080

DO - 10.1051/0004-6361/201937080

M3 - Journal article

AN - SCOPUS:85084414220

VL - 636

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 0004-6361

M1 - A89

ER -