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Title: Kepler-1649b: An Exo-Venus in the Solar Neighborhood

Abstract

The Kepler mission has revealed that Earth-sized planets are common, and dozens have been discovered to orbit in or near their host star’s habitable zone. A major focus in astronomy is to determine which of these exoplanets are likely to have Earth-like properties that are amenable to follow-up with both ground- and future space-based surveys, with an ultimate goal of probing their atmospheres to look for signs of life. Venus-like atmospheres will be of particular interest in these surveys. While Earth and Venus evolved to have similar sizes and densities, it remains unclear what factors led to the dramatic divergence of their atmospheres. Studying analogs to both Earth and Venus can thus shed light on the limits of habitability and the potential for life on known exoplanets. Here, we present the discovery and confirmation of Kepler-1649b, an Earth-sized planet orbiting a nearby M5V star that receives incident flux at a level similar to that of Venus. We present our methods for characterizing the star, using a combination of point-spread function photometry, ground-based spectroscopy, and imaging, to confirm the planetary nature of Kepler-1649b. Planets like Kepler-1649b will be prime candidates for atmospheric and habitability studies in the next generation of spacemore » missions.« less

Authors:
; ;  [1]; ; ; ;  [2];  [3];  [4];  [5];  [6]
  1. SETI Institute, Mountain View, CA 94043 (United States)
  2. NASA Ames Research Center, Moffett Field, CA 94035 (United States)
  3. Bay Area Environmental Research Institute, 625 2nd Street, Suite 209, Petaluma, CA 94952 (United States)
  4. Department of Astronomy, The University of Texas at Austin, Austin, TX 78712 (United States)
  5. NASA Exoplanet Science Institute/Caltech, Pasadena, CA (United States)
  6. Department of Physics and Astronomy, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132 (United States)
Publication Date:
OSTI Identifier:
22663715
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 153; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ATMOSPHERES; DENSITY; ORBITS; PHOTOMETRY; PROBES; SATELLITES; SPACE; SPECTROSCOPY; STARS; VENUS PLANET; VISIBLE RADIATION

Citation Formats

Angelo, Isabel, Rowe, Jason F., Huber, Daniel, Howell, Steve B., Quintana, Elisa V., Burningham, Ben, Barclay, Thomas, Still, Martin, Mann, Andrew W., Ciardi, David R., and Kane, Stephen R., E-mail: isabelangelo@berkeley.edu. Kepler-1649b: An Exo-Venus in the Solar Neighborhood. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA615F.
Angelo, Isabel, Rowe, Jason F., Huber, Daniel, Howell, Steve B., Quintana, Elisa V., Burningham, Ben, Barclay, Thomas, Still, Martin, Mann, Andrew W., Ciardi, David R., & Kane, Stephen R., E-mail: isabelangelo@berkeley.edu. Kepler-1649b: An Exo-Venus in the Solar Neighborhood. United States. doi:10.3847/1538-3881/AA615F.
Angelo, Isabel, Rowe, Jason F., Huber, Daniel, Howell, Steve B., Quintana, Elisa V., Burningham, Ben, Barclay, Thomas, Still, Martin, Mann, Andrew W., Ciardi, David R., and Kane, Stephen R., E-mail: isabelangelo@berkeley.edu. Sat . "Kepler-1649b: An Exo-Venus in the Solar Neighborhood". United States. doi:10.3847/1538-3881/AA615F.
@article{osti_22663715,
title = {Kepler-1649b: An Exo-Venus in the Solar Neighborhood},
author = {Angelo, Isabel and Rowe, Jason F. and Huber, Daniel and Howell, Steve B. and Quintana, Elisa V. and Burningham, Ben and Barclay, Thomas and Still, Martin and Mann, Andrew W. and Ciardi, David R. and Kane, Stephen R., E-mail: isabelangelo@berkeley.edu},
abstractNote = {The Kepler mission has revealed that Earth-sized planets are common, and dozens have been discovered to orbit in or near their host star’s habitable zone. A major focus in astronomy is to determine which of these exoplanets are likely to have Earth-like properties that are amenable to follow-up with both ground- and future space-based surveys, with an ultimate goal of probing their atmospheres to look for signs of life. Venus-like atmospheres will be of particular interest in these surveys. While Earth and Venus evolved to have similar sizes and densities, it remains unclear what factors led to the dramatic divergence of their atmospheres. Studying analogs to both Earth and Venus can thus shed light on the limits of habitability and the potential for life on known exoplanets. Here, we present the discovery and confirmation of Kepler-1649b, an Earth-sized planet orbiting a nearby M5V star that receives incident flux at a level similar to that of Venus. We present our methods for characterizing the star, using a combination of point-spread function photometry, ground-based spectroscopy, and imaging, to confirm the planetary nature of Kepler-1649b. Planets like Kepler-1649b will be prime candidates for atmospheric and habitability studies in the next generation of space missions.},
doi = {10.3847/1538-3881/AA615F},
journal = {Astronomical Journal (Online)},
number = 4,
volume = 153,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}