Surveying the Trans-Neptunian Solar System with TESS

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Surveying the Trans-Neptunian Solar System with TESS

Surveying the Trans-Neptunian DPS 52nd Meeting 10/26/20-10/30/20 Solar System with TESS Malena Rice NSF Graduate Research Fellow Yale University Astronomy Department Rice & Laughlin 2020, in press, PSJ www.astro.yale.edu/malenarice 30 au Adapted from Batygin & Brown 2016 Planet Nine ? Batygin, Adams, Brown, & Becker 2019 Planet Nine ? 400-800 au semimajor axis Batygin, Adams, Brown, & Becker 2019 Planet Nine ? 5-10 Earth masses 400-800 au semimajor axis Batygin, Adams, Brown, & Becker 2019 Planet Nine ? 5-10 Earth masses 400-800 au semimajor axis 15-25° inclination Batygin, Adams, Brown, & Becker 2019 0.2-0.5 eccentricity Planet Nine ? 5-10 Earth masses 400-800 au semimajor axis 15-25° inclination Batygin, Adams, Brown, & Becker 2019 Video: NASA Goddard Space Flight Center \ How do we recover signals over 300x dimmer than Pluto? Sedna’s sky motion How do we recover signals over 300x dimmer than Pluto? tinyurl.com/sednarecovery • Automated local maximum finder • Automated local maximum finder • Injection recovery tests • Automated local maximum finder • Injection recovery tests • False positive vetting with two independent baseline subtraction methods Paper I Focus: Ongoing Work and The Galactic Plane Future Directions • Motivation: Point sources can • Incorporate neural “hide” in the galactic plane networks for automated candidate vetting in a • Applied the algorithm to larger-scale, all-sky survey search TESS sectors 18 and 19 for candidate outer solar • Extend to additional system objects science cases by • Developed and applied the considering a different framework for a TESS shift- range of orbital paths stacking pipeline Image from TESS/MIT Video by Tony Dunn Thank you! Rice & Laughlin 2020, in press, PSJ (on arxiv tonight) DPS talk: 304.03 [email protected] Web summary: astro.yale.edu/malenarice/#researchhighlight4 @malena_rice.

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Planet Nine Join the Hunt for a Possible Planet!
Planet Nine Join the Hunt for a Possible Planet! In July 2015, the New Horizons spacecraft gave us our first close look at Pluto, the most famous dwarf planet in the outskirts of our Solar System. The flyby was big news, and the data sent back to Earth revealed a world far more complex than anyone realized. Are there more worlds out there, beyond Pluto? What might such a world be like? Planet Nine tells a tale of the search for another world hidden in the darkness. Planetary scientist-explorers continually make discoveries about conditions "out there". Planet Nine follows Mike Brown and his team at CalTech as they uncover new worlds such as the remarkably bright Eris; tumbling Haumea, an Exploring Farther egg-shaped object rotating incredibly fast; and Sedna, whose High-powered telescopes peer out at the sky each night, orbit takes it deep into the far reaches of the Solar System. searching for faint light from distant worlds. Experience a night at the Subaru Telescope in Hawaii, as Brown describes his Is there a new planet beyond even these distant objects? search for worlds so far away they take thousands of years to orbit the Sun. Orbits Tell The Tale Pluto's own unusual path is a clue to chaotic activities billions of years ago. Could other distant objects "out there" follow equally odd orbits? Throughout this fascinating show, Mike Brown talks about unusual orbits and describes nights of painstaking robotic searches for new planets. His is a story of modern planet- hunting techniques that have uncovered many new worlds out beyond Neptune.
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Arxiv:1902.10103V1 [Astro-Ph.EP] 26 Feb 2019
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Présentation Powerpoint
The Solar system Kuiper belt (30-50 AU) KBO=Kuiper Belt Object • Can be roughly divided into the classical belt and the resonances. Resonances are orbits linked to that of Neptune (e.g. twice for every three Neptune orbits, or once for every two). • Makemake (45.79 AU average), although smaller than Pluto, is the largest known object in the classical Kuiper belt (KBO not in a confirmed resonance with Neptune). • The dwarf planet Pluto (39 AU average) is the largest known object in the Kuiper belt. When discovered in 1930, it was considered to be the ninth planet; this changed in 2006 with the adoption of a formal definition of planet (3/2 resonance with Neptune) Typical objects in KBO Comparison of the orbits of scattered disc objects (black), classical KBOs (blue), and 2:5 resonant objects (green). Orbits of other KBOs are gray. (Orbital axes have been aligned for comparison.) Trans-neptunian planets – Similar to Uranus or Neptune, but formed directly at 125-250 AU? – Formed closer and scattered by the giant planets ealry in SS history? – Captured from another planetary system? Discovery of Sedna-like body Trujillo & Sheppard, Nature 507, 471 (2014) Surveyed 52 deg2 of sky for new inner Oort cloud objects using the Dark Energy Camera (DECam) at CTIO 4-m telescope: each patch imaged 3 times with 1.5 h to 2 h between images to detect the motion of objects beyond 300 AU when compared to background stars + position and colour of 2012 VP 113 measured using the Magellan 6.5-m telescope ® Consistent with simulated Super Earth-mass body at 250
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Arxiv:2007.10339V3 [Astro-Ph.EP] 9 Nov 2020
Draft version November 10, 2020 Typeset using LATEX twocolumn style in AASTeX62 The Case for an Early Solar Binary Companion Amir Siraj1 and Abraham Loeb1 1Department of Astronomy, Harvard University, 60 Garden Street, Cambridge, MA 02138, USA ABSTRACT We show that an equal-mass, temporary binary companion to the Sun in the solar birth cluster at a separation of ∼ 103 AU would have increased the likelihood of forming the observed population of outer Oort cloud objects and of capturing Planet Nine. In particular, the discovery of a captured origin for Planet Nine would favor our binary model by an order of magnitude relative to a lone stellar history. Our model predicts an overabundance of dwarf planets, discoverable by LSST, with similar orbits to Planet Nine, which would result from capture by the stellar binary. Keywords: Binary stars { Oort cloud { Planet Nine 1. INTRODUCTION a distance of ∼ 500 AU from the Sun (Brown & Batygin Simulations of outer Oort cloud (OOC)1 formation in 2016; Batygin et al. 2019). Zderic & Madigan(2020) the Solar system (Dones et al. 2004; Kaib & Quinn 2008; argued that Planet Nine may not exist, and its observed Brasser et al. 2010) have difficulties reproducing the ob- gravitational effects could potentially be caused by an served ratio between scattered disk) (SD)2 and OOC ob- unobserved ring of small bodies in the outer solar sys- jects (Duncan & Levison 1997; Levison et al. 2008) As a tem. There also exists the possibility that the clustering result, the origin of the OOC is an unsolved puzzle. Sce- is a statistical fluke (Clement & Kaib 2020).
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