TOI-1728b: The Habitable-zone Planet Finder Confirms a Warm Super-Neptune Orbiting an M-dwarf Host

  title={TOI-1728b: The Habitable-zone Planet Finder Confirms a Warm Super-Neptune Orbiting an M-dwarf Host},
  author={Shubham Kanodia and Caleb I. Ca{\~n}as and Gudmundur Stef{\'a}nsson and Joe P. Ninan and Leslie Hebb and Andrea S. J. Lin and Helen Baran and Marissa Maney and Ryan C. Terrien and Suvrath Mahadevan and William D. Cochran and Michael Endl and Jiayin Dong and Chad F. Bender and Scott A. Diddams and Eric B. Ford and Connor Fredrick and Samuel Halverson and Fred R. Hearty and Andrew J. Metcalf and Andrew J. Monson and Lawrence W. Ramsey and Paul Robertson and Arpita Roy and Christian Schwab and Jason T. Wright},
  journal={The Astrophysical Journal},
We confirm the planetary nature of TOI-1728b using a combination of ground-based photometry, near-infrared Doppler velocimetry and spectroscopy with the Habitable-zone Planet Finder.TOI-1728 is an old, inactive M0 star with \teff{} $= 3980^{+31}_{-32}$ K, which hosts a transiting super Neptune at an orbital period of $\sim$ 3.49 days. Joint fitting of the radial velocities and TESS and ground-based transits yields a planetary radius of $5.05_{-0.17}^{+0.16}$ R$_{\oplus}$, mass $26.78_{-5.13… Expand
Broadband Stability of the Habitable Zone Planet Finder Fabry–Pérot Etalon Calibration System: Evidence for Chromatic Variation
The comblike spectrum of a white light–illuminated Fabry–Pérot etalon can serve as a cost-effective and stable reference for precise Doppler measurements. Understanding the stability of these devicesExpand
Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b)
One of the main objectives of the Transiting Exoplanet Survey Satellite (TESS) mission is the discovery of small rocky planets around relatively bright nearby stars. Here, we report the discovery andExpand
TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M-dwarf host
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) lightExpand


Why do warm Neptunes present nonzero eccentricity?
Most Neptune-mass planets in close-in orbits (orbital periods less than a few days) present nonzero eccentricity, typically around 0.15. This is somehow unexpected, as these planets undergo strongExpand
EXOFASTv2: A public, generalized, publication-quality exoplanet modeling code
The next generation public exoplanet fitting software, EXOFASTv2, is presented and several state-of-the-art ways to constrain its properties are provided, including taking advantage of the now-ubiquitous all-sky catalog photometry and Gaia parallaxes. Expand
2018, Lightkurve: Kepler and TESS time series
  • 2018
Society of Photo-Optical Instrumentation Engineers
We report here the preliminary results obtained with the multi-conjugate adaptive optics (MCAO) system at the Dunn Solar Telescope (DST/NSO MCAO) and the optical setup and performances are presentedExpand
  • 2016
Probabilistic programming in Python using PyMC3
This paper is a tutorial-style introduction to PyMC3, a new open source Probabilistic Programming framework written in Python that uses Theano to compute gradients via automatic dierentiation as well as compile probabilistic programs on-the-fly to C for increased speed. Expand
starry: Analytic Occultation Light Curves
We derive analytic, closed form, numerically stable solutions for the total flux received from a spherical planet, moon or star during an occultation if the specific intensity map of the body isExpand
The TESS science processing operations center
The Transiting Exoplanet Survey Satellite (TESS) will conduct a search for Earth's closest cousins starting in early 2018 and is expected to discover ∼1,000 small planets with Rp < 4 R⊕ and measureExpand
galpy: A Python Library for Galactic Dynamics
I describe the design, implementation, and usage of galpy, a Python package for galactic-dynamics calculations. At its core, galpy consists of a general framework for representing galactic potentialsExpand
VizieR Online Data Catalog, I/322A
  • 2012