TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host

Shubham Kanodia; Gudmundur Stefansson; Caleb I. Canas; Marissa Maney; Andrea S.J. Lin; Joe P. Ninan; Sinclaire Jones; Andrew Monson; Brock A. Parker; Henry A. Kobulnicky; Jason Rothenberg; Corey Beard; Jack Lubin; Paul Robertson; Arvind F. Gupta; Suvrath Mahadevan; William D. Cochran; Chad F. Bender; Scott A. Diddams; Connor Fredrick; Samuel Halverson; Suzanne Hawley; Fred Hearty; Leslie Hebb; Ravi Kopparapu; Andrew J. Metcalf; Lawrence W. Ramsey; Arpita Roy; Christian Schwab; Maria Schutte; Ryan C. Terrien; John Wisniewski; Jason T. Wright

doi:10.3847/1538-3881/ac1940

TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host

Shubham Kanodia, Gudmundur Stefansson, Caleb I. Canas, Marissa Maney, Andrea S.J. Lin, Joe P. Ninan, Sinclaire Jones, Andrew Monson, Brock A. Parker, Henry A. Kobulnicky, Jason Rothenberg, Corey Beard, Jack Lubin, Paul Robertson, Arvind F. Gupta, Suvrath Mahadevan, William D. Cochran, Chad F. Bender, Scott A. Diddams, Connor FredrickSamuel Halverson, Suzanne Hawley, Fred Hearty, Leslie Hebb, Ravi Kopparapu, Andrew J. Metcalf, Lawrence W. Ramsey, Arpita Roy, Christian Schwab, Maria Schutte, Ryan C. Terrien, John Wisniewski, Jason T. Wright

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We confirm the planetary nature of TOI-532b, using a combination of precise near-infrared radial velocities with the Habitable-zone Planet Finder, Transiting Exoplanet Survey Satellite (TESS) light curves, ground-based photometric follow up, and high-contrast imaging. TOI-532 is a faint (J ∼ 11.5) metal-rich M dwarf with Teff = 3957 ± 69 K and [Fe/H] = 0.38 ± 0.04; it hosts a transiting gaseous planet with a period of ∼2.3 days. Joint fitting of the radial velocities with the TESS and ground-based transits reveal a planet with radius of 5.82 ± 0.19 R ⊕, and a mass of 61.5-9.3+9.7 M ⊕. TOI-532b is the largest and most massive super Neptune detected around an M dwarf with both mass and radius measurements, and it bridges the gap between the Neptune-sized planets and the heavier Jovian planets known to orbit M dwarfs. It also follows the previously noted trend between gas giants and host-star metallicity for M-dwarf planets. In addition, it is situated at the edge of the Neptune desert in the Radius-Insolation plane, helping place constraints on the mechanisms responsible for sculpting this region of planetary parameter space.

Original language	English (US)
Article number	135
Journal	Astronomical Journal
Volume	162
Issue number	4
DOIs	https://doi.org/10.3847/1538-3881/ac1940
State	Published - Oct 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-3881/ac1940

Cite this

Kanodia, S., Stefansson, G., Canas, C. I., Maney, M., Lin, A. S. J., Ninan, J. P., Jones, S., Monson, A., Parker, B. A., Kobulnicky, H. A., Rothenberg, J., Beard, C., Lubin, J., Robertson, P., Gupta, A. F., Mahadevan, S., Cochran, W. D., Bender, C. F., Diddams, S. A., ... Wright, J. T. (2021). TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host. Astronomical Journal, 162(4), [135]. https://doi.org/10.3847/1538-3881/ac1940

@article{27a2b0c8470b4e229b8fef4e34046a21,

title = "TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host",

abstract = "We confirm the planetary nature of TOI-532b, using a combination of precise near-infrared radial velocities with the Habitable-zone Planet Finder, Transiting Exoplanet Survey Satellite (TESS) light curves, ground-based photometric follow up, and high-contrast imaging. TOI-532 is a faint (J ∼ 11.5) metal-rich M dwarf with Teff = 3957 ± 69 K and [Fe/H] = 0.38 ± 0.04; it hosts a transiting gaseous planet with a period of ∼2.3 days. Joint fitting of the radial velocities with the TESS and ground-based transits reveal a planet with radius of 5.82 ± 0.19 R ⊕, and a mass of 61.5-9.3+9.7 M ⊕. TOI-532b is the largest and most massive super Neptune detected around an M dwarf with both mass and radius measurements, and it bridges the gap between the Neptune-sized planets and the heavier Jovian planets known to orbit M dwarfs. It also follows the previously noted trend between gas giants and host-star metallicity for M-dwarf planets. In addition, it is situated at the edge of the Neptune desert in the Radius-Insolation plane, helping place constraints on the mechanisms responsible for sculpting this region of planetary parameter space.",

author = "Shubham Kanodia and Gudmundur Stefansson and Canas, {Caleb I.} and Marissa Maney and Lin, {Andrea S.J.} and Ninan, {Joe P.} and Sinclaire Jones and Andrew Monson and Parker, {Brock A.} and Kobulnicky, {Henry A.} and Jason Rothenberg and Corey Beard and Jack Lubin and Paul Robertson and Gupta, {Arvind F.} and Suvrath Mahadevan and Cochran, {William D.} and Bender, {Chad F.} and Diddams, {Scott A.} and Connor Fredrick and Samuel Halverson and Suzanne Hawley and Fred Hearty and Leslie Hebb and Ravi Kopparapu and Metcalf, {Andrew J.} and Ramsey, {Lawrence W.} and Arpita Roy and Christian Schwab and Maria Schutte and Terrien, {Ryan C.} and John Wisniewski and Wright, {Jason T.}",

year = "2021",

month = oct,

doi = "10.3847/1538-3881/ac1940",

language = "English (US)",

volume = "162",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "IOP Publishing Ltd.",

number = "4",

}

Kanodia, S, Stefansson, G, Canas, CI, Maney, M, Lin, ASJ, Ninan, JP, Jones, S, Monson, A, Parker, BA, Kobulnicky, HA, Rothenberg, J, Beard, C, Lubin, J, Robertson, P, Gupta, AF, Mahadevan, S, Cochran, WD, Bender, CF, Diddams, SA, Fredrick, C, Halverson, S, Hawley, S, Hearty, F, Hebb, L, Kopparapu, R, Metcalf, AJ, Ramsey, LW, Roy, A, Schwab, C, Schutte, M, Terrien, RC, Wisniewski, J & Wright, JT 2021, 'TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host', Astronomical Journal, vol. 162, no. 4, 135. https://doi.org/10.3847/1538-3881/ac1940

TY - JOUR

T1 - TOI-532b

T2 - The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host

AU - Kanodia, Shubham

AU - Stefansson, Gudmundur

AU - Canas, Caleb I.

AU - Maney, Marissa

AU - Lin, Andrea S.J.

AU - Ninan, Joe P.

AU - Jones, Sinclaire

AU - Monson, Andrew

AU - Parker, Brock A.

AU - Kobulnicky, Henry A.

AU - Rothenberg, Jason

AU - Beard, Corey

AU - Lubin, Jack

AU - Robertson, Paul

AU - Gupta, Arvind F.

AU - Mahadevan, Suvrath

AU - Cochran, William D.

AU - Bender, Chad F.

AU - Diddams, Scott A.

AU - Fredrick, Connor

AU - Halverson, Samuel

AU - Hawley, Suzanne

AU - Hearty, Fred

AU - Hebb, Leslie

AU - Kopparapu, Ravi

AU - Metcalf, Andrew J.

AU - Ramsey, Lawrence W.

AU - Roy, Arpita

AU - Schwab, Christian

AU - Schutte, Maria

AU - Terrien, Ryan C.

AU - Wisniewski, John

AU - Wright, Jason T.

PY - 2021/10

Y1 - 2021/10

N2 - We confirm the planetary nature of TOI-532b, using a combination of precise near-infrared radial velocities with the Habitable-zone Planet Finder, Transiting Exoplanet Survey Satellite (TESS) light curves, ground-based photometric follow up, and high-contrast imaging. TOI-532 is a faint (J ∼ 11.5) metal-rich M dwarf with Teff = 3957 ± 69 K and [Fe/H] = 0.38 ± 0.04; it hosts a transiting gaseous planet with a period of ∼2.3 days. Joint fitting of the radial velocities with the TESS and ground-based transits reveal a planet with radius of 5.82 ± 0.19 R ⊕, and a mass of 61.5-9.3+9.7 M ⊕. TOI-532b is the largest and most massive super Neptune detected around an M dwarf with both mass and radius measurements, and it bridges the gap between the Neptune-sized planets and the heavier Jovian planets known to orbit M dwarfs. It also follows the previously noted trend between gas giants and host-star metallicity for M-dwarf planets. In addition, it is situated at the edge of the Neptune desert in the Radius-Insolation plane, helping place constraints on the mechanisms responsible for sculpting this region of planetary parameter space.

AB - We confirm the planetary nature of TOI-532b, using a combination of precise near-infrared radial velocities with the Habitable-zone Planet Finder, Transiting Exoplanet Survey Satellite (TESS) light curves, ground-based photometric follow up, and high-contrast imaging. TOI-532 is a faint (J ∼ 11.5) metal-rich M dwarf with Teff = 3957 ± 69 K and [Fe/H] = 0.38 ± 0.04; it hosts a transiting gaseous planet with a period of ∼2.3 days. Joint fitting of the radial velocities with the TESS and ground-based transits reveal a planet with radius of 5.82 ± 0.19 R ⊕, and a mass of 61.5-9.3+9.7 M ⊕. TOI-532b is the largest and most massive super Neptune detected around an M dwarf with both mass and radius measurements, and it bridges the gap between the Neptune-sized planets and the heavier Jovian planets known to orbit M dwarfs. It also follows the previously noted trend between gas giants and host-star metallicity for M-dwarf planets. In addition, it is situated at the edge of the Neptune desert in the Radius-Insolation plane, helping place constraints on the mechanisms responsible for sculpting this region of planetary parameter space.

UR - http://www.scopus.com/inward/record.url?scp=85116358252&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85116358252&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ac1940

DO - 10.3847/1538-3881/ac1940

M3 - Article

AN - SCOPUS:85116358252

SN - 0004-6256

VL - 162

JO - Astronomical Journal

JF - Astronomical Journal

IS - 4

M1 - 135

ER -

TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this