Utilizing small telescopes operated by citizen scientists for transiting exoplanet follow-up

Zellem, R T, Pearson, K A, Blaser, E, Fowler, M, Ciardi, D R, Biferno, A, Massey, B, Marchis, F, Baer, R, Ball, C, Chasin, M, Conley, M, Dixon, S, Fletcher, E, Hernandez, S, Nair, S, Perian, Q, Sienkiewicz, F, Tock, K, Vijayakumar, V, Swain, M R and Fitzgerald, Michael 2020, Utilizing small telescopes operated by citizen scientists for transiting exoplanet follow-up, Publications of the Astronomical Society of the Pacific, vol. 132, no. 1011, pp. 1-22, doi: 10.1088/1538-3873/ab7ee7.

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Title Utilizing small telescopes operated by citizen scientists for transiting exoplanet follow-up
Author(s) Zellem, R T
Pearson, K A
Blaser, E
Fowler, M
Ciardi, D R
Biferno, A
Massey, B
Marchis, F
Baer, R
Ball, C
Chasin, M
Conley, M
Dixon, S
Fletcher, E
Hernandez, S
Nair, S
Perian, Q
Sienkiewicz, F
Tock, K
Vijayakumar, V
Swain, M R
Fitzgerald, MichaelORCID iD for Fitzgerald, Michael orcid.org/0000-0001-6554-1826
Journal name Publications of the Astronomical Society of the Pacific
Volume number 132
Issue number 1011
Article ID 054401
Start page 1
End page 22
Total pages 22
Publisher IOP Publishing
Place of publication Bristol, Eng.
Publication date 2020-04
ISSN 0004-6280
1538-3873
Keyword(s) Astronomy & Astrophysics
ATMOSPHERIC HAZE
detection
ephemerides
EXTRASOLAR PLANET
HD 189733B
ORBITS
photometric
PHOTOMETRY
Physical Sciences
planets and satellites
SCIENCE
Science & Technology
SPECTROSCOPY
surveys
techniques
TERRESTRIAL PLANETS
TIMING VARIATIONS
TRANSMISSION SPECTRUM
Summary Due to the efforts by numerous ground-based surveys and NASA's Kepler and Transiting Exoplanet Survey Satellite (TESS), there will be hundreds, if not thousands, of transiting exoplanets ideal for atmospheric characterization via spectroscopy with large platforms such as James Webb Space Telescope and ARIEL. However their next predicted mid-transit time could become so increasingly uncertain over time that significant overhead would be required to ensure the detection of the entire transit. As a result, follow-up observations to characterize these exoplanetary atmospheres would require less-efficient use of an observatory's time—which is an issue for large platforms where minimizing observing overheads is a necessity. Here we demonstrate the power of citizen scientists operating smaller observatories (≤1 m) to keep ephemerides "fresh," defined here as when the 1σ uncertainty in the mid-transit time is less than half the transit duration. We advocate for the creation of a community-wide effort to perform ephemeris maintenance on transiting exoplanets by citizen scientists. Such observations can be conducted with even a 6 inch telescope, which has the potential to save up to ~10,000 days for a 1000-planet survey. Based on a preliminary analysis of 14 transits from a single 6 inch MicroObservatory telescope, we empirically estimate the ability of small telescopes to benefit the community. Observations with a small-telescope network operated by citizen scientists are capable of resolving stellar blends to within 5''/pixel, can follow-up long period transits in short-baseline TESS fields, monitor epoch-to-epoch stellar variability at a precision 0.67% ± 0.12% for a 11.3 V-mag star, and search for new planets or constrain the masses of known planets with transit timing variations greater than two minutes.
Language eng
DOI 10.1088/1538-3873/ab7ee7
Indigenous content off
Field of Research 0201 Astronomical and Space Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30149920

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