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Masses and Distances of Planetary Microlens Systems with High Angular Resolution Imaging

Bhattacharya, Aparna and Akeson, Rachel and Anderson, Jay and Bachelet, Etienne and Beaulieu, Jean-Phillipe and Bellini, Andrea and Bennett, David P. and Boss, Alan and Bozza, Valerio and Bryden, Geoffrey and Cassan, Arnaud and Ciardi, David R. and Dominik, Martin and Fukui, Akihiko and Gaudi, B. Scott and Henderson, Calen B. and Jacklin, Savannah and Johnson, Samson A. and Koshimoto, Naoki and Mao, Shude and Mawet, Dimitri and Ngo, Henry and Penny, Matthew T. and Poleski, Radoslaw and Ranc, Clément and Dodgson-Robinson, Sarah and Rogers, Leslie A. and Sahu, Kailash C. and Seager, Sara and Street, R. A. and Suzuki, Daisuke and Szulagyi, Judit and Tsapras, Yiannis and Udalski, Andrzej and Yock, Philip and Zimmerman, Neil (2019) Masses and Distances of Planetary Microlens Systems with High Angular Resolution Imaging. Astro2020 Science White Paper, . (Unpublished)

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Microlensing is the only method that can detect and measure mass of wide orbit, low mass, solar system analog exoplanets. Mass measurements of such planets would yield massive science on planet formation, exoplanet demographics, free floating planets, planet frequencies towards the galaxy. High res follow-up observations of past microlens targets provide a mass measurement of microlens planets and hosts at an uncertainty of <20%. This will be primary method for mass measurement with WFIRST. We advocate for the fact that high resolution observations with AO, HST and JWST(in future) remain necessary in coming decade to develop the methods, to determine the field and filter selection, understand the systematics and to develop a robust pipeline to release high quality data products from WFIRST microlensing survey such that the astronomy community can promptly engage in the science. We also support future high res obs with US ELTs with advanced Laser AO systems in context of enhancing the science return of WFIRST microlensing survey. We endorse the 2018 Exoplanet Science Strategy report published by the National Academy. This white paper extends and complements the material presented therein. In particular, this white paper supports the recommendation of the National Academy Exoplanet Science Strategy report that: NASA should launch WFIRST to conduct its microlensing survey of distant planets and to demonstrate the technique of coronagraphic spectroscopy on exoplanet targets. This white paper also supports to the finding from that report which states "A number of activities, including precursor and concurrent observations using ground- and space-based facilities, would optimize the scientific yield of the WFIRST microlensing survey."

Item Type:Report or Paper (White Paper)
Related URLs:
URLURL TypeDescription Paper
Akeson, Rachel0000-0001-9674-1564
Ciardi, David R.0000-0002-5741-3047
Henderson, Calen B.0000-0001-8877-9060
Mawet, Dimitri0000-0002-8895-4735
Group:Infrared Processing and Analysis Center (IPAC), Astronomy Department
Series Name:Astro2020 Science White Paper
Record Number:CaltechAUTHORS:20190619-134731951
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96569
Deposited By: Tony Diaz
Deposited On:19 Jun 2019 21:28
Last Modified:03 Oct 2019 21:23

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