Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

E Knudstrup; D Gandolfi; G Nowak; C M Persson; E Furlan; J Livingston; E Matthews; M S Lundkvist; M L Winther; J L Rørsted; S H Albrecht; E Goffo; I Carleo; H J Deeg; K A Collins; N Narita; H Isaacson; S Redfield; F Dai; T Hirano; J M Akana Murphy; C Beard; L A Buchhave; S Cary; A Chontos; I Crossfield; W D Cochran; D Conti; P A Dalba; M Esposito; S Fajardo-Acosta; S Giacalone; S K Grunblatt; P Guerra; A P Hatzes; R Holcomb; F G Horta; A W Howard; D Huber; J M Jenkins; P Kabáth; S Kane; J Korth; K W F Lam; K V Lester; R Matson; K K McLeod; J Orell-Miquel; F Murgas; E Palle; A S Polanski; G Ricker; P Robertson; R Rubenzahl; J E Schlieder; S Seager; A M S Smith; P Tenenbaum; E Turtelboom; R Vanderspek; L Weiss; J Winn

doi:10.1093/mnras/stac3684

Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

E Knudstrup, D Gandolfi, G Nowak, C M Persson, E Furlan, J Livingston, E Matthews, M S Lundkvist, M L Winther, J L Rørsted, S H Albrecht, E Goffo, I Carleo, H J Deeg, K A Collins, N Narita, H Isaacson, S Redfield, F Dai, T HiranoJ M Akana Murphy, C Beard, L A Buchhave, S Cary, A Chontos, I Crossfield, W D Cochran, D Conti, P A Dalba, M Esposito, S Fajardo-Acosta, S Giacalone, S K Grunblatt, P Guerra, A P Hatzes, R Holcomb, F G Horta, A W Howard, D Huber, J M Jenkins, P Kabáth, S Kane, J Korth, K W F Lam, K V Lester, R Matson, K K McLeod, J Orell-Miquel, F Murgas, E Palle, A S Polanski, G Ricker, P Robertson, R Rubenzahl, J E Schlieder, S Seager, A M S Smith, P Tenenbaum, E Turtelboom, R Vanderspek, L Weiss, J Winn

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Abstract

We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of \2.699835^\+0.000004\\-0.000003\\ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (\0.13^\+0.07\\-0.09\\) with a minimum mass of 84 ± 7 M⊕ and a period of \443^\+11\\-13\\ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Volume	519
Issue number	4
Pages (from-to)	5637-5655
ISSN	0035-8711
DOIs	https://doi.org/10.1093/mnras/stac3684
Publication status	Published - 2023

Keywords

Techniques: photometric
Techniques: radial velocities
Planets and satellites: detection

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10.1093/mnras/stac3684

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Knudstrup, E., Gandolfi, D., Nowak, G., Persson, C. M., Furlan, E., Livingston, J., Matthews, E., Lundkvist, M. S., Winther, M. L., Rørsted, J. L., Albrecht, S. H., Goffo, E., Carleo, I., Deeg, H. J., Collins, K. A., Narita, N., Isaacson, H., Redfield, S., Dai, F., ... Winn, J. (2023). Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion. Monthly Notices of the Royal Astronomical Society, 519(4), 5637-5655. https://doi.org/10.1093/mnras/stac3684

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title = "Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion",

abstract = "We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of \2.699835^\+0.000004\\-0.000003\\ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (\0.13^\+0.07\\-0.09\\) with a minimum mass of 84 ± 7 M⊕ and a period of \443^\+11\\-13\\ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.",

keywords = "Techniques: photometric, Techniques: radial velocities, Planets and satellites: detection",

author = "E Knudstrup and D Gandolfi and G Nowak and Persson, {C M} and E Furlan and J Livingston and E Matthews and Lundkvist, {M S} and Winther, {M L} and R{\o}rsted, {J L} and Albrecht, {S H} and E Goffo and I Carleo and Deeg, {H J} and Collins, {K A} and N Narita and H Isaacson and S Redfield and F Dai and T Hirano and Akana Murphy, {J M} and C Beard and Buchhave, {L A} and S Cary and A Chontos and I Crossfield and Cochran, {W D} and D Conti and Dalba, {P A} and M Esposito and S Fajardo-Acosta and S Giacalone and Grunblatt, {S K} and P Guerra and Hatzes, {A P} and R Holcomb and Horta, {F G} and Howard, {A W} and D Huber and Jenkins, {J M} and P Kab{\'a}th and S Kane and J Korth and Lam, {K W F} and Lester, {K V} and R Matson and McLeod, {K K} and J Orell-Miquel and F Murgas and E Palle and Polanski, {A S} and G Ricker and P Robertson and R Rubenzahl and Schlieder, {J E} and S Seager and Smith, {A M S} and P Tenenbaum and E Turtelboom and R Vanderspek and L Weiss and J Winn",

year = "2023",

doi = "10.1093/mnras/stac3684",

language = "English",

volume = "519",

pages = "5637--5655",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Knudstrup, E, Gandolfi, D, Nowak, G, Persson, CM, Furlan, E, Livingston, J, Matthews, E, Lundkvist, MS, Winther, ML, Rørsted, JL, Albrecht, SH, Goffo, E, Carleo, I, Deeg, HJ, Collins, KA, Narita, N, Isaacson, H, Redfield, S, Dai, F, Hirano, T, Akana Murphy, JM, Beard, C, Buchhave, LA, Cary, S, Chontos, A, Crossfield, I, Cochran, WD, Conti, D, Dalba, PA, Esposito, M, Fajardo-Acosta, S, Giacalone, S, Grunblatt, SK, Guerra, P, Hatzes, AP, Holcomb, R, Horta, FG, Howard, AW, Huber, D, Jenkins, JM, Kabáth, P, Kane, S, Korth, J, Lam, KWF, Lester, KV, Matson, R, McLeod, KK, Orell-Miquel, J, Murgas, F, Palle, E, Polanski, AS, Ricker, G, Robertson, P, Rubenzahl, R, Schlieder, JE, Seager, S, Smith, AMS, Tenenbaum, P, Turtelboom, E, Vanderspek, R, Weiss, L & Winn, J 2023, 'Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 4, pp. 5637-5655. https://doi.org/10.1093/mnras/stac3684

TY - JOUR

T1 - Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

AU - Knudstrup, E

AU - Gandolfi, D

AU - Nowak, G

AU - Persson, C M

AU - Furlan, E

AU - Livingston, J

AU - Matthews, E

AU - Lundkvist, M S

AU - Winther, M L

AU - Rørsted, J L

AU - Albrecht, S H

AU - Goffo, E

AU - Carleo, I

AU - Deeg, H J

AU - Collins, K A

AU - Narita, N

AU - Isaacson, H

AU - Redfield, S

AU - Dai, F

AU - Hirano, T

AU - Akana Murphy, J M

AU - Beard, C

AU - Buchhave, L A

AU - Cary, S

AU - Chontos, A

AU - Crossfield, I

AU - Cochran, W D

AU - Conti, D

AU - Dalba, P A

AU - Esposito, M

AU - Fajardo-Acosta, S

AU - Giacalone, S

AU - Grunblatt, S K

AU - Guerra, P

AU - Hatzes, A P

AU - Holcomb, R

AU - Horta, F G

AU - Howard, A W

AU - Huber, D

AU - Jenkins, J M

AU - Kabáth, P

AU - Kane, S

AU - Korth, J

AU - Lam, K W F

AU - Lester, K V

AU - Matson, R

AU - McLeod, K K

AU - Orell-Miquel, J

AU - Murgas, F

AU - Palle, E

AU - Polanski, A S

AU - Ricker, G

AU - Robertson, P

AU - Rubenzahl, R

AU - Schlieder, J E

AU - Seager, S

AU - Smith, A M S

AU - Tenenbaum, P

AU - Turtelboom, E

AU - Vanderspek, R

AU - Weiss, L

AU - Winn, J

PY - 2023

Y1 - 2023

N2 - We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of \2.699835^\+0.000004\\-0.000003\\ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (\0.13^\+0.07\\-0.09\\) with a minimum mass of 84 ± 7 M⊕ and a period of \443^\+11\\-13\\ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.

AB - We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of \2.699835^\+0.000004\\-0.000003\\ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (\0.13^\+0.07\\-0.09\\) with a minimum mass of 84 ± 7 M⊕ and a period of \443^\+11\\-13\\ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.

KW - Techniques: photometric

KW - Techniques: radial velocities

KW - Planets and satellites: detection

U2 - 10.1093/mnras/stac3684

DO - 10.1093/mnras/stac3684

M3 - Journal article

SN - 0035-8711

VL - 519

SP - 5637

EP - 5655

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

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