HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs

Andrés Jordán; J. D. Hartman; D. Bayliss; G. Bakos; R. Brahm; E. M. Bryant; Z. Csubry; Th Henning; M. Hobson; L. Mancini; K. Penev; M. Rabus; V. Suc; M. De Val-Borro; J. Wallace; K. Barkaoui; David R. Ciardi; K. A. Collins; E. Esparza-Borges; E. Furlan; T. Gan; Z. Benkhaldoun; M. Ghachoui; M. Gillon; S. Howell; E. Jehin; A. Fukui; K. Kawauchi; J. H. Livingston; R. Luque; R. Matson; E. C. Matthews; H. P. Osborn; F. Murgas; Norio Narita; E. Palle; H. Parvianen; W. C. Waalkes

doi:10.3847/1538-3881/ac4a77

HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs

Andrés Jordán, J. D. Hartman, D. Bayliss, G. Bakos, R. Brahm, E. M. Bryant, Z. Csubry, Th Henning, M. Hobson, L. Mancini, K. Penev, M. Rabus, V. Suc, M. De Val-Borro, J. Wallace, K. Barkaoui, David R. Ciardi, K. A. Collins, E. Esparza-Borges, E. FurlanT. Gan, Z. Benkhaldoun, M. Ghachoui, M. Gillon, S. Howell, E. Jehin, A. Fukui, K. Kawauchi, J. H. Livingston, R. Luque, R. Matson, E. C. Matthews, H. P. Osborn, F. Murgas, Norio Narita, E. Palle, H. Parvianen, W. C. Waalkes

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Abstract

The relative rarity of giant planets around low-mass stars compared with solar-type stars is a key prediction from the core-accretion planet formation theory. In this paper we report on the discovery of four gas giant planets that transit low-mass late K and early M dwarfs. The planets HATS-74Ab (TOI 737b), HATS-75b (TOI 552b), HATS-76b (TOI 555b), and HATS-77b (TOI 730b) were all discovered from the HATSouth photometric survey and follow-up using TESS and other photometric facilities. We use the new ESPRESSO facility at the VLT to confirm systems and measure their masses. We find that these planets have masses of 1.46 ± 0.14 MJ, 0.491 ± 0.039 MJ, 2.629 ± 0.089 MJ, and 1.374-0.074+0.100 MJ, respectively, and radii of 1.032 ± 0.021 RJ, 0.884 ± 0.013 RJ, 1.079 ± 0.031 RJ, and 1.165 ± 0.021 RJ, respectively. The planets all orbit close to their host stars with orbital periods ranging from 1.7319 days to 3.0876 days. With further work, we aim to test core-accretion theory by using these and further discoveries to quantify the occurrence rate of giant planets around low-mass host stars.

Original language	English
Article number	125
Journal	Astronomical Journal
Volume	163
Issue number	3
DOIs	https://doi.org/10.3847/1538-3881/ac4a77
State	Published - 1 Mar 2022
Externally published	Yes

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Jordán, A., Hartman, J. D., Bayliss, D., Bakos, G., Brahm, R., Bryant, E. M., Csubry, Z., Henning, T., Hobson, M., Mancini, L., Penev, K., Rabus, M., Suc, V., De Val-Borro, M., Wallace, J., Barkaoui, K., Ciardi, D. R., Collins, K. A., Esparza-Borges, E., ... Waalkes, W. C. (2022). HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs. Astronomical Journal, 163(3), Article 125. https://doi.org/10.3847/1538-3881/ac4a77

@article{2644de6bd11e40a2b5fcf4cb554f68fc,

title = "HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs",

abstract = "The relative rarity of giant planets around low-mass stars compared with solar-type stars is a key prediction from the core-accretion planet formation theory. In this paper we report on the discovery of four gas giant planets that transit low-mass late K and early M dwarfs. The planets HATS-74Ab (TOI 737b), HATS-75b (TOI 552b), HATS-76b (TOI 555b), and HATS-77b (TOI 730b) were all discovered from the HATSouth photometric survey and follow-up using TESS and other photometric facilities. We use the new ESPRESSO facility at the VLT to confirm systems and measure their masses. We find that these planets have masses of 1.46 ± 0.14 MJ, 0.491 ± 0.039 MJ, 2.629 ± 0.089 MJ, and 1.374-0.074+0.100 MJ, respectively, and radii of 1.032 ± 0.021 RJ, 0.884 ± 0.013 RJ, 1.079 ± 0.031 RJ, and 1.165 ± 0.021 RJ, respectively. The planets all orbit close to their host stars with orbital periods ranging from 1.7319 days to 3.0876 days. With further work, we aim to test core-accretion theory by using these and further discoveries to quantify the occurrence rate of giant planets around low-mass host stars.",

author = "Andr{\'e}s Jord{\'a}n and Hartman, {J. D.} and D. Bayliss and G. Bakos and R. Brahm and Bryant, {E. M.} and Z. Csubry and Th Henning and M. Hobson and L. Mancini and K. Penev and M. Rabus and V. Suc and {De Val-Borro}, M. and J. Wallace and K. Barkaoui and Ciardi, {David R.} and Collins, {K. A.} and E. Esparza-Borges and E. Furlan and T. Gan and Z. Benkhaldoun and M. Ghachoui and M. Gillon and S. Howell and E. Jehin and A. Fukui and K. Kawauchi and Livingston, {J. H.} and R. Luque and R. Matson and Matthews, {E. C.} and Osborn, {H. P.} and F. Murgas and Norio Narita and E. Palle and H. Parvianen and Waalkes, {W. C.}",

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = mar,

day = "1",

doi = "10.3847/1538-3881/ac4a77",

language = "English",

volume = "163",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "3",

}

Jordán, A, Hartman, JD, Bayliss, D, Bakos, G, Brahm, R, Bryant, EM, Csubry, Z, Henning, T, Hobson, M, Mancini, L, Penev, K, Rabus, M, Suc, V, De Val-Borro, M, Wallace, J, Barkaoui, K, Ciardi, DR, Collins, KA, Esparza-Borges, E, Furlan, E, Gan, T, Benkhaldoun, Z, Ghachoui, M, Gillon, M, Howell, S, Jehin, E, Fukui, A, Kawauchi, K, Livingston, JH, Luque, R, Matson, R, Matthews, EC, Osborn, HP, Murgas, F, Narita, N, Palle, E, Parvianen, H & Waalkes, WC 2022, 'HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs', Astronomical Journal, vol. 163, no. 3, 125. https://doi.org/10.3847/1538-3881/ac4a77

TY - JOUR

T1 - HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b

T2 - Four Transiting Giant Planets Around K and M Dwarfs

AU - Jordán, Andrés

AU - Hartman, J. D.

AU - Bayliss, D.

AU - Bakos, G.

AU - Brahm, R.

AU - Bryant, E. M.

AU - Csubry, Z.

AU - Henning, Th

AU - Hobson, M.

AU - Mancini, L.

AU - Penev, K.

AU - Rabus, M.

AU - Suc, V.

AU - De Val-Borro, M.

AU - Wallace, J.

AU - Barkaoui, K.

AU - Ciardi, David R.

AU - Collins, K. A.

AU - Esparza-Borges, E.

AU - Furlan, E.

AU - Gan, T.

AU - Benkhaldoun, Z.

AU - Ghachoui, M.

AU - Gillon, M.

AU - Howell, S.

AU - Jehin, E.

AU - Fukui, A.

AU - Kawauchi, K.

AU - Livingston, J. H.

AU - Luque, R.

AU - Matson, R.

AU - Matthews, E. C.

AU - Osborn, H. P.

AU - Murgas, F.

AU - Narita, Norio

AU - Palle, E.

AU - Parvianen, H.

AU - Waalkes, W. C.

PY - 2022/3/1

Y1 - 2022/3/1

N2 - The relative rarity of giant planets around low-mass stars compared with solar-type stars is a key prediction from the core-accretion planet formation theory. In this paper we report on the discovery of four gas giant planets that transit low-mass late K and early M dwarfs. The planets HATS-74Ab (TOI 737b), HATS-75b (TOI 552b), HATS-76b (TOI 555b), and HATS-77b (TOI 730b) were all discovered from the HATSouth photometric survey and follow-up using TESS and other photometric facilities. We use the new ESPRESSO facility at the VLT to confirm systems and measure their masses. We find that these planets have masses of 1.46 ± 0.14 MJ, 0.491 ± 0.039 MJ, 2.629 ± 0.089 MJ, and 1.374-0.074+0.100 MJ, respectively, and radii of 1.032 ± 0.021 RJ, 0.884 ± 0.013 RJ, 1.079 ± 0.031 RJ, and 1.165 ± 0.021 RJ, respectively. The planets all orbit close to their host stars with orbital periods ranging from 1.7319 days to 3.0876 days. With further work, we aim to test core-accretion theory by using these and further discoveries to quantify the occurrence rate of giant planets around low-mass host stars.

AB - The relative rarity of giant planets around low-mass stars compared with solar-type stars is a key prediction from the core-accretion planet formation theory. In this paper we report on the discovery of four gas giant planets that transit low-mass late K and early M dwarfs. The planets HATS-74Ab (TOI 737b), HATS-75b (TOI 552b), HATS-76b (TOI 555b), and HATS-77b (TOI 730b) were all discovered from the HATSouth photometric survey and follow-up using TESS and other photometric facilities. We use the new ESPRESSO facility at the VLT to confirm systems and measure their masses. We find that these planets have masses of 1.46 ± 0.14 MJ, 0.491 ± 0.039 MJ, 2.629 ± 0.089 MJ, and 1.374-0.074+0.100 MJ, respectively, and radii of 1.032 ± 0.021 RJ, 0.884 ± 0.013 RJ, 1.079 ± 0.031 RJ, and 1.165 ± 0.021 RJ, respectively. The planets all orbit close to their host stars with orbital periods ranging from 1.7319 days to 3.0876 days. With further work, we aim to test core-accretion theory by using these and further discoveries to quantify the occurrence rate of giant planets around low-mass host stars.

UR - http://www.scopus.com/inward/record.url?scp=85125857860&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ac4a77

DO - 10.3847/1538-3881/ac4a77

M3 - Article

AN - SCOPUS:85125857860

SN - 0004-6256

VL - 163

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

M1 - 125

ER -

HATS-74Ab, HATS-75b, HATS-76b, and HATS-77b: Four Transiting Giant Planets Around K and M Dwarfs

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