The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS

L. M. Serrano; D. Gandolfi; S. Hoyer; A. Brandeker; M. J. Hooton; S. Sousa; F. Murgas; D. R. Ciardi; S. B. Howell; W. Benz; N. Billot; H.-G. Florén; A. Bekkelien; A. Bonfanti; A. Krenn; A. J. Mustill; T. G. Wilson; H. Osborn; H. Parviainen; N. Heidari; E. Pallé; M. Fridlund; V. Adibekyan; L. Fossati; M. Deleuil; E. Knudstrup; K. A. Collins; K. W. F. Lam; S. Grziwa; S. Salmon; S. H. Albrecht; Y. Alibert; R. Alonso; G. Anglada-Escudé; T. Bárczy; D. Barrado y Navascues; S. C. C. Barros; W. Baumjohann; M. Beck; T. Beck; A. Bieryla; X. Bonfils; P. T. Boyd; C. Broeg; J. Cabrera; S. Charnoz; B. Chazelas; J. L. Christiansen; A. Collier Cameron; P. Cortés-Zuleta; Sz. Csizmadia; M. B. Davies; A. Deline; L. Delrez; O. D. S. Demangeon; B.-O. Demory; A. Dunlavey; D. Ehrenreich; A. Erikson; A. Fortier; A. Fukui; Z. Garai; M. Gillon; M. Güdel; G. Hébrard; K. Heng; C. X. Huang; K. G. Isaak; J. M. Jenkins; L. L. Kiss; J. Laskar; D. W. Latham; A. Lecavelier des Etangs; M. Lendl; A. M. Levine; C. Lovis; M. B. Lund; D. Magrin; P. F. L. Maxted; N. Narita; V. Nascimbeni; G. Olofsson; R. Ottensamer; I. Pagano; A. C. S. V. Pessanha; G. Peter; G. Piotto; D. Pollacco; D. Queloz; R. Ragazzoni; N. Rando; F. Ratti; H. Rauer; I. Ribas; G. Ricker; P. Rowden; N. C. Santos; G. Scandariato; S. Seager; D. Ségransan; A. E. Simon; A. M. S. Smith; M. Steller; Gy. M. Szabó; N. Thomas; J. D. Twicken; S. Udry; B. Ulmer; V. Van Grootel; R. Vanderspek; V. Viotto; N. Walton

doi:10.1051/0004-6361/202243093

The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS

L. M. Serrano^*, D. Gandolfi, S. Hoyer, A. Brandeker, M. J. Hooton, S. Sousa, F. Murgas, D. R. Ciardi, S. B. Howell, W. Benz, N. Billot, H.-G. Florén, A. Bekkelien, A. Bonfanti, A. Krenn, A. J. Mustill, T. G. Wilson, H. Osborn, H. Parviainen, N. HeidariE. Pallé, M. Fridlund, V. Adibekyan, L. Fossati, M. Deleuil, E. Knudstrup, K. A. Collins, K. W. F. Lam, S. Grziwa, S. Salmon, S. H. Albrecht, Y. Alibert, R. Alonso, G. Anglada-Escudé, T. Bárczy, D. Barrado y Navascues, S. C. C. Barros, W. Baumjohann, M. Beck, T. Beck, A. Bieryla, X. Bonfils, P. T. Boyd, C. Broeg, J. Cabrera, S. Charnoz, B. Chazelas, J. L. Christiansen, A. Collier Cameron, P. Cortés-Zuleta, Sz. Csizmadia, M. B. Davies, A. Deline, L. Delrez, O. D. S. Demangeon, B.-O. Demory, A. Dunlavey, D. Ehrenreich, A. Erikson, A. Fortier, A. Fukui, Z. Garai, M. Gillon, M. Güdel, G. Hébrard, K. Heng, C. X. Huang, K. G. Isaak, J. M. Jenkins, L. L. Kiss, J. Laskar, D. W. Latham, A. Lecavelier des Etangs, M. Lendl, A. M. Levine, C. Lovis, M. B. Lund, D. Magrin, P. F. L. Maxted, N. Narita, V. Nascimbeni, G. Olofsson, R. Ottensamer, I. Pagano, A. C. S. V. Pessanha, G. Peter, G. Piotto, D. Pollacco, D. Queloz, R. Ragazzoni, N. Rando, F. Ratti, H. Rauer, I. Ribas, G. Ricker, P. Rowden, N. C. Santos, G. Scandariato, S. Seager, D. Ségransan, A. E. Simon, A. M. S. Smith, M. Steller, Gy. M. Szabó, N. Thomas, J. D. Twicken, S. Udry, B. Ulmer, V. Van Grootel, R. Vanderspek, V. Viotto, N. Walton

^*Corresponding author for this work

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Abstract

We present the discovery of two small planets transiting HD 93963A (TOI-1797), a GOV star (M^* = 1.109 ± 0.043M_⊙, R^* = 1.043 ± 0.009 R_⊙) in a visual binary system. We combined TESS and CHEOPS space-borne photometry with MuSCAT 2 ground-based photometry, ‘Alopeke and PHARO high-resolution imaging, TRES and FIES reconnaissance spectroscopy, and SOPHIE radial velocity measurements. We validated and spectroscopically confirmed the outer transiting planet HD 93963 A c, a sub-Neptune with an orbital period of P_c ≈ 3.65 d that was reported to be a TESS object of interest (TOI) shortly after the release of Sector 22 data. HD 93963 A c has amass of M_c = 19.2 ± 4.1 M_⊕ and a radius of R_c = 3.228 ± 0.059 R_⊕, implying a mean density of ρ_c = 3.1 ± 0.7 g cm^-3. The inner object, HD 93963 A b, is a validated 1.04 d ultra-short period (USP) transiting super-Earth that we discovered in the TESS light curve and that was not listed as a TOI, owing to the low significance of its signal (TESS signal-to-noise ratio ≈6.7, TESS + CHEOPS combined transit depth D_b = 141.5_−8.3^+8.5 ppm). We intensively monitored the star with CHEOPS by performing nine transit observations to confirm the presence of the inner planet and validate the system. HD 93963 A b is the first small (R_b = 1.35 ± 0.042 R_⊕) USP planet discovered and validated by TESS and CHEOPS. Unlike planet c, HD 93963 Ab is not significantly detected in our radial velocities (M_b = 7.8 ± 3.2 M_⊕). The two planets are on either side of the radius valley, implying that they could have undergone completely different evolution processes. We also discovered a linear trend in our Doppler measurements, suggesting the possible presence of a long-period outer planet. With a V-band magnitude of 9.2, HD 93963 A is among the brightest stars known to host a USP planet, making it one of the most favourable targets for precise mass measurement via Doppler spectroscopy and an important laboratory to test formation, evolution, and migration models of planetary systems hosting ultra-short period planets.

Original language	English
Article number	A1
Number of pages	25
Journal	Astronomy & Astrophysics
Volume	667
Early online date	28 Oct 2022
DOIs	https://doi.org/10.1051/0004-6361/202243093
Publication status	Published - 1 Nov 2022

Keywords

Planets and satellites: detection
Planets and satellites: fundamental parameters
Instrumentation: photometers
Instrumentation: spectrographs
Methods: data analysis

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10.1051/0004-6361/202243093Licence: CC BY

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Copyright © L. M. Serrano et al. 2022. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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http://arxiv.org/abs/2207.13920Licence: CC BY

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PLATO 22-25: Support for the PLATO Development Phase 2022-2025: Planet candidate ranking and validation
Cameron, A. C. (PI)
Science & Technology Facilities Council
1/04/22 → 31/03/25
Project: Standard
Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018
Jardine, M. M. (PI), Cameron, A. C. (CoI), Cyganowski, C. J. (CoI), Horne, K. D. (CoI) & Wood, K. (CoI)
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1/04/15 → 31/03/18
Project: Standard

The HD 93963 A transiting system. A 1.04 d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS. (2022)
Wilson, T. G. (Creator) & Cameron, A. C. (Creator), VizieR On-line Data Catalog, 22 Oct 2022
http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/667/A1
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Serrano, L. M., Gandolfi, D., Hoyer, S., Brandeker, A., Hooton, M. J., Sousa, S., Murgas, F., Ciardi, D. R., Howell, S. B., Benz, W., Billot, N., Florén, H.-G., Bekkelien, A., Bonfanti, A., Krenn, A., Mustill, A. J., Wilson, T. G., Osborn, H., Parviainen, H., ... Walton, N. (2022). The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS. Astronomy & Astrophysics, 667, Article A1. https://doi.org/10.1051/0004-6361/202243093

@article{5eae38bab2dc4f08aeea399fa8e04340,

title = "The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS",

abstract = "We present the discovery of two small planets transiting HD 93963A (TOI-1797), a GOV star (M* = 1.109 ± 0.043M⊙, R* = 1.043 ± 0.009 R⊙) in a visual binary system. We combined TESS and CHEOPS space-borne photometry with MuSCAT 2 ground-based photometry, {\textquoteleft}Alopeke and PHARO high-resolution imaging, TRES and FIES reconnaissance spectroscopy, and SOPHIE radial velocity measurements. We validated and spectroscopically confirmed the outer transiting planet HD 93963 A c, a sub-Neptune with an orbital period of Pc ≈ 3.65 d that was reported to be a TESS object of interest (TOI) shortly after the release of Sector 22 data. HD 93963 A c has amass of Mc = 19.2 ± 4.1 M⊕ and a radius of Rc = 3.228 ± 0.059 R⊕, implying a mean density of ρc = 3.1 ± 0.7 g cm-3. The inner object, HD 93963 A b, is a validated 1.04 d ultra-short period (USP) transiting super-Earth that we discovered in the TESS light curve and that was not listed as a TOI, owing to the low significance of its signal (TESS signal-to-noise ratio ≈6.7, TESS + CHEOPS combined transit depth Db = 141.5−8.3+8.5 ppm). We intensively monitored the star with CHEOPS by performing nine transit observations to confirm the presence of the inner planet and validate the system. HD 93963 A b is the first small (Rb = 1.35 ± 0.042 R⊕) USP planet discovered and validated by TESS and CHEOPS. Unlike planet c, HD 93963 Ab is not significantly detected in our radial velocities (Mb = 7.8 ± 3.2 M⊕). The two planets are on either side of the radius valley, implying that they could have undergone completely different evolution processes. We also discovered a linear trend in our Doppler measurements, suggesting the possible presence of a long-period outer planet. With a V-band magnitude of 9.2, HD 93963 A is among the brightest stars known to host a USP planet, making it one of the most favourable targets for precise mass measurement via Doppler spectroscopy and an important laboratory to test formation, evolution, and migration models of planetary systems hosting ultra-short period planets.",

keywords = "Planets and satellites: detection, Planets and satellites: fundamental parameters, Instrumentation: photometers, Instrumentation: spectrographs, Methods: data analysis",

author = "Serrano, {L. M.} and D. Gandolfi and S. Hoyer and A. Brandeker and Hooton, {M. J.} and S. Sousa and F. Murgas and Ciardi, {D. R.} and Howell, {S. B.} and W. Benz and N. Billot and H.-G. Flor{\'e}n and A. Bekkelien and A. Bonfanti and A. Krenn and Mustill, {A. J.} and Wilson, {T. G.} and H. Osborn and H. Parviainen and N. Heidari and E. Pall{\'e} and M. Fridlund and V. Adibekyan and L. Fossati and M. Deleuil and E. Knudstrup and Collins, {K. A.} and Lam, {K. W. F.} and S. Grziwa and S. Salmon and Albrecht, {S. H.} and Y. Alibert and R. Alonso and G. Anglada-Escud{\'e} and T. B{\'a}rczy and {Barrado y Navascues}, D. and Barros, {S. C. C.} and W. Baumjohann and M. Beck and T. Beck and A. Bieryla and X. Bonfils and Boyd, {P. T.} and C. Broeg and J. Cabrera and S. Charnoz and B. Chazelas and Christiansen, {J. L.} and {Collier Cameron}, A. and P. Cort{\'e}s-Zuleta and Sz. Csizmadia and Davies, {M. B.} and A. Deline and L. Delrez and Demangeon, {O. D. S.} and B.-O. Demory and A. Dunlavey and D. Ehrenreich and A. Erikson and A. Fortier and A. Fukui and Z. Garai and M. Gillon and M. G{\"u}del and G. H{\'e}brard and K. Heng and Huang, {C. X.} and Isaak, {K. G.} and Jenkins, {J. M.} and Kiss, {L. L.} and J. Laskar and Latham, {D. W.} and {Lecavelier des Etangs}, A. and M. Lendl and Levine, {A. M.} and C. Lovis and Lund, {M. B.} and D. Magrin and Maxted, {P. F. L.} and N. Narita and V. Nascimbeni and G. Olofsson and R. Ottensamer and I. Pagano and Pessanha, {A. C. S. V.} and G. Peter and G. Piotto and D. Pollacco and D. Queloz and R. Ragazzoni and N. Rando and F. Ratti and H. Rauer and I. Ribas and G. Ricker and P. Rowden and Santos, {N. C.} and G. Scandariato and S. Seager and D. S{\'e}gransan and Simon, {A. E.} and Smith, {A. M. S.} and M. Steller and Szab{\'o}, {Gy. M.} and N. Thomas and Twicken, {J. D.} and S. Udry and B. Ulmer and {Van Grootel}, V. and R. Vanderspek and V. Viotto and N. Walton",

note = "Funding: A.C.C. and T.W. acknowledge support from STFC consolidated grant number ST/M001296/1.",

year = "2022",

month = nov,

day = "1",

doi = "10.1051/0004-6361/202243093",

language = "English",

volume = "667",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

Serrano, LM, Gandolfi, D, Hoyer, S, Brandeker, A, Hooton, MJ, Sousa, S, Murgas, F, Ciardi, DR, Howell, SB, Benz, W, Billot, N, Florén, H-G, Bekkelien, A, Bonfanti, A, Krenn, A, Mustill, AJ, Wilson, TG, Osborn, H, Parviainen, H, Heidari, N, Pallé, E, Fridlund, M, Adibekyan, V, Fossati, L, Deleuil, M, Knudstrup, E, Collins, KA, Lam, KWF, Grziwa, S, Salmon, S, Albrecht, SH, Alibert, Y, Alonso, R, Anglada-Escudé, G, Bárczy, T, Barrado y Navascues, D, Barros, SCC, Baumjohann, W, Beck, M, Beck, T, Bieryla, A, Bonfils, X, Boyd, PT, Broeg, C, Cabrera, J, Charnoz, S, Chazelas, B, Christiansen, JL, Collier Cameron, A, Cortés-Zuleta, P, Csizmadia, S, Davies, MB, Deline, A, Delrez, L, Demangeon, ODS, Demory, B-O, Dunlavey, A, Ehrenreich, D, Erikson, A, Fortier, A, Fukui, A, Garai, Z, Gillon, M, Güdel, M, Hébrard, G, Heng, K, Huang, CX, Isaak, KG, Jenkins, JM, Kiss, LL, Laskar, J, Latham, DW, Lecavelier des Etangs, A, Lendl, M, Levine, AM, Lovis, C, Lund, MB, Magrin, D, Maxted, PFL, Narita, N, Nascimbeni, V, Olofsson, G, Ottensamer, R, Pagano, I, Pessanha, ACSV, Peter, G, Piotto, G, Pollacco, D, Queloz, D, Ragazzoni, R, Rando, N, Ratti, F, Rauer, H, Ribas, I, Ricker, G, Rowden, P, Santos, NC, Scandariato, G, Seager, S, Ségransan, D, Simon, AE, Smith, AMS, Steller, M, Szabó, GM, Thomas, N, Twicken, JD, Udry, S, Ulmer, B, Van Grootel, V, Vanderspek, R, Viotto, V & Walton, N 2022, 'The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS', Astronomy & Astrophysics, vol. 667, A1. https://doi.org/10.1051/0004-6361/202243093

TY - JOUR

T1 - The HD 93963 A transiting system

T2 - a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS

AU - Serrano, L. M.

AU - Gandolfi, D.

AU - Hoyer, S.

AU - Brandeker, A.

AU - Hooton, M. J.

AU - Sousa, S.

AU - Murgas, F.

AU - Ciardi, D. R.

AU - Howell, S. B.

AU - Benz, W.

AU - Billot, N.

AU - Florén, H.-G.

AU - Bekkelien, A.

AU - Bonfanti, A.

AU - Krenn, A.

AU - Mustill, A. J.

AU - Wilson, T. G.

AU - Osborn, H.

AU - Parviainen, H.

AU - Heidari, N.

AU - Pallé, E.

AU - Fridlund, M.

AU - Adibekyan, V.

AU - Fossati, L.

AU - Deleuil, M.

AU - Knudstrup, E.

AU - Collins, K. A.

AU - Lam, K. W. F.

AU - Grziwa, S.

AU - Salmon, S.

AU - Albrecht, S. H.

AU - Alibert, Y.

AU - Alonso, R.

AU - Anglada-Escudé, G.

AU - Bárczy, T.

AU - Barrado y Navascues, D.

AU - Barros, S. C. C.

AU - Baumjohann, W.

AU - Beck, M.

AU - Beck, T.

AU - Bieryla, A.

AU - Bonfils, X.

AU - Boyd, P. T.

AU - Broeg, C.

AU - Cabrera, J.

AU - Charnoz, S.

AU - Chazelas, B.

AU - Christiansen, J. L.

AU - Collier Cameron, A.

AU - Cortés-Zuleta, P.

AU - Csizmadia, Sz.

AU - Davies, M. B.

AU - Deline, A.

AU - Delrez, L.

AU - Demangeon, O. D. S.

AU - Demory, B.-O.

AU - Dunlavey, A.

AU - Ehrenreich, D.

AU - Erikson, A.

AU - Fortier, A.

AU - Fukui, A.

AU - Garai, Z.

AU - Gillon, M.

AU - Güdel, M.

AU - Hébrard, G.

AU - Heng, K.

AU - Huang, C. X.

AU - Isaak, K. G.

AU - Jenkins, J. M.

AU - Kiss, L. L.

AU - Laskar, J.

AU - Latham, D. W.

AU - Lecavelier des Etangs, A.

AU - Lendl, M.

AU - Levine, A. M.

AU - Lovis, C.

AU - Lund, M. B.

AU - Magrin, D.

AU - Maxted, P. F. L.

AU - Narita, N.

AU - Nascimbeni, V.

AU - Olofsson, G.

AU - Ottensamer, R.

AU - Pagano, I.

AU - Pessanha, A. C. S. V.

AU - Peter, G.

AU - Piotto, G.

AU - Pollacco, D.

AU - Queloz, D.

AU - Ragazzoni, R.

AU - Rando, N.

AU - Ratti, F.

AU - Rauer, H.

AU - Ribas, I.

AU - Ricker, G.

AU - Rowden, P.

AU - Santos, N. C.

AU - Scandariato, G.

AU - Seager, S.

AU - Ségransan, D.

AU - Simon, A. E.

AU - Smith, A. M. S.

AU - Steller, M.

AU - Szabó, Gy. M.

AU - Thomas, N.

AU - Twicken, J. D.

AU - Udry, S.

AU - Ulmer, B.

AU - Van Grootel, V.

AU - Vanderspek, R.

AU - Viotto, V.

AU - Walton, N.

N1 - Funding: A.C.C. and T.W. acknowledge support from STFC consolidated grant number ST/M001296/1.

PY - 2022/11/1

Y1 - 2022/11/1

N2 - We present the discovery of two small planets transiting HD 93963A (TOI-1797), a GOV star (M* = 1.109 ± 0.043M⊙, R* = 1.043 ± 0.009 R⊙) in a visual binary system. We combined TESS and CHEOPS space-borne photometry with MuSCAT 2 ground-based photometry, ‘Alopeke and PHARO high-resolution imaging, TRES and FIES reconnaissance spectroscopy, and SOPHIE radial velocity measurements. We validated and spectroscopically confirmed the outer transiting planet HD 93963 A c, a sub-Neptune with an orbital period of Pc ≈ 3.65 d that was reported to be a TESS object of interest (TOI) shortly after the release of Sector 22 data. HD 93963 A c has amass of Mc = 19.2 ± 4.1 M⊕ and a radius of Rc = 3.228 ± 0.059 R⊕, implying a mean density of ρc = 3.1 ± 0.7 g cm-3. The inner object, HD 93963 A b, is a validated 1.04 d ultra-short period (USP) transiting super-Earth that we discovered in the TESS light curve and that was not listed as a TOI, owing to the low significance of its signal (TESS signal-to-noise ratio ≈6.7, TESS + CHEOPS combined transit depth Db = 141.5−8.3+8.5 ppm). We intensively monitored the star with CHEOPS by performing nine transit observations to confirm the presence of the inner planet and validate the system. HD 93963 A b is the first small (Rb = 1.35 ± 0.042 R⊕) USP planet discovered and validated by TESS and CHEOPS. Unlike planet c, HD 93963 Ab is not significantly detected in our radial velocities (Mb = 7.8 ± 3.2 M⊕). The two planets are on either side of the radius valley, implying that they could have undergone completely different evolution processes. We also discovered a linear trend in our Doppler measurements, suggesting the possible presence of a long-period outer planet. With a V-band magnitude of 9.2, HD 93963 A is among the brightest stars known to host a USP planet, making it one of the most favourable targets for precise mass measurement via Doppler spectroscopy and an important laboratory to test formation, evolution, and migration models of planetary systems hosting ultra-short period planets.

AB - We present the discovery of two small planets transiting HD 93963A (TOI-1797), a GOV star (M* = 1.109 ± 0.043M⊙, R* = 1.043 ± 0.009 R⊙) in a visual binary system. We combined TESS and CHEOPS space-borne photometry with MuSCAT 2 ground-based photometry, ‘Alopeke and PHARO high-resolution imaging, TRES and FIES reconnaissance spectroscopy, and SOPHIE radial velocity measurements. We validated and spectroscopically confirmed the outer transiting planet HD 93963 A c, a sub-Neptune with an orbital period of Pc ≈ 3.65 d that was reported to be a TESS object of interest (TOI) shortly after the release of Sector 22 data. HD 93963 A c has amass of Mc = 19.2 ± 4.1 M⊕ and a radius of Rc = 3.228 ± 0.059 R⊕, implying a mean density of ρc = 3.1 ± 0.7 g cm-3. The inner object, HD 93963 A b, is a validated 1.04 d ultra-short period (USP) transiting super-Earth that we discovered in the TESS light curve and that was not listed as a TOI, owing to the low significance of its signal (TESS signal-to-noise ratio ≈6.7, TESS + CHEOPS combined transit depth Db = 141.5−8.3+8.5 ppm). We intensively monitored the star with CHEOPS by performing nine transit observations to confirm the presence of the inner planet and validate the system. HD 93963 A b is the first small (Rb = 1.35 ± 0.042 R⊕) USP planet discovered and validated by TESS and CHEOPS. Unlike planet c, HD 93963 Ab is not significantly detected in our radial velocities (Mb = 7.8 ± 3.2 M⊕). The two planets are on either side of the radius valley, implying that they could have undergone completely different evolution processes. We also discovered a linear trend in our Doppler measurements, suggesting the possible presence of a long-period outer planet. With a V-band magnitude of 9.2, HD 93963 A is among the brightest stars known to host a USP planet, making it one of the most favourable targets for precise mass measurement via Doppler spectroscopy and an important laboratory to test formation, evolution, and migration models of planetary systems hosting ultra-short period planets.

KW - Planets and satellites: detection

KW - Planets and satellites: fundamental parameters

KW - Instrumentation: photometers

KW - Instrumentation: spectrographs

KW - Methods: data analysis

U2 - 10.1051/0004-6361/202243093

DO - 10.1051/0004-6361/202243093

M3 - Article

SN - 0004-6361

VL - 667

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A1

ER -

The HD 93963 A transiting system: a 1.04d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS

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Keywords

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Projects

PLATO 22-25: Support for the PLATO Development Phase 2022-2025: Planet candidate ranking and validation

Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018

Datasets

The HD 93963 A transiting system. A 1.04 d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS. (2022)

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