Publication:
A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b

Issued Date

2018-11-01

Resource Type

Article

ISSN

00046256

DOI

10.3847/1538-3881/aae31b

Other identifier(s)

2-s2.0-85056709669

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Astronomical Journal. Vol.156, No.5 (2018)

Suggested Citation

Knicole D. Colón, George Zhou, Avi Shporer, Karen A. Collins, Allyson Bieryla, Néstor Espinoza, Felipe Murgas, Petchara Pattarakijwanich, Supachai Awiphan, James D. Armstrong, Jeremy Bailey, Geert Barentsen, Daniel Bayliss, Anurak Chakpor, William D. Cochran, Vikram S. Dhillon, Keith Horne, Michael Ireland, Lucyna Kedziora-Chudczer, John F. Kielkopf, Siramas Komonjinda, David W. Latham, Tom R. Marsh, David E. Mkrtichian, Enric Pallé, David Ruffolo, Ramotholo Sefako, Chris G. Tinney, Suwicha Wannawichian, Suraphong Yuma A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b. Astronomical Journal. Vol.156, No.5 (2018). doi:10.3847/1538-3881/aae31b Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/45734

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Title

A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b

Author(s)

Knicole D. Colón
 George Zhou
 Avi Shporer
 Karen A. Collins
 Allyson Bieryla
 Néstor Espinoza
 Felipe Murgas
 Petchara Pattarakijwanich
 Supachai Awiphan
 James D. Armstrong
 Jeremy Bailey
 Geert Barentsen
 Daniel Bayliss
 Anurak Chakpor
 William D. Cochran
 Vikram S. Dhillon
 Keith Horne
 Michael Ireland
 Lucyna Kedziora-Chudczer
 John F. Kielkopf
 Siramas Komonjinda
 David W. Latham
 Tom R. Marsh
 David E. Mkrtichian
 Enric Pallé
 David Ruffolo
 Ramotholo Sefako
 Chris G. Tinney
 Suwicha Wannawichian
 Suraphong Yuma

Other Contributor(s)

Bay Area Environmental Research Institute
 Pontificia Universidad Católica de Chile
 University of Hawaii System
 University of New South Wales (UNSW) Australia
 Massachusetts Institute of Technology
 University of St Andrews
 The University of Warwick
 Harvard-Smithsonian Center for Astrophysics
 University of Louisville
 University of Texas at Austin
 Mahidol University
 Instituto Astrofisico de Canarias
 Australian National University
 Max Planck Institut für Astronomie
 NASA Goddard Space Flight Center
 NASA Ames Research Center
 Universidad de la Laguna
 South African Astronomical Observatory
 University of Sheffield
 Chiang Mai University
 Millennium Institute of Astrophysics
 National Astronomical Research Institute of Thailand

Abstract

© 2018. The American Astronomical Society. All rights reserved. We present 45 ground-based photometric observations of the K2-22 system collected between 2016 December and 2017 May, which we use to investigate the evolution of the transit of the disintegrating planet K2-22b. Last observed in early 2015, in these new observations we recover the transit at multiple epochs and measure a typical depth of <1.5%. We find that the distribution of our measured transit depths is comparable to the range of depths measured in observations from 2014 and 2015. These new observations also support ongoing variability in the K2-22b transit shape and time, although the overall shallowness of the transit makes a detailed analysis of these transit parameters difficult. We find no strong evidence of wavelength-dependent transit depths for epochs where we have simultaneous coverage at multiple wavelengths, although our stacked Las Cumbres Observatory data collected over days-to-months timescales are suggestive of a deeper transit at blue wavelengths. We encourage continued high-precision photometric and spectroscopic monitoring of this system in order to further constrain the evolution timescale and to aid comparative studies with the other few known disintegrating planets.

Keyword(s)

Earth and Planetary Sciences
 Physics and Astronomy

Availability

URI

https://repository.li.mahidol.ac.th/handle/20.500.14594/45734

Collections

Scopus 2018