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Characterizing the ...
Characterizing the Cool KOIs. VI. H- and K-band Spectra of Kepler M Dwarf Planet-candidate Hosts
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- Muirhead, Philip (författare)
- Boston University
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- Becker, Juliette (författare)
- California Institute of Technology
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- Feiden, Gregory, 1986- (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Rojas-Ayala, Bárbara (författare)
- Centro de Astrofisica da Universidade do Porto
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- Vanderburg, Andrew (författare)
- Harvard College Observatory
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- Price, Ellen (författare)
- California Institute of Technology
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- Thorp, Rachel (författare)
- California Institute of Technology
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- Law, Nicholas (författare)
- University of North Carolina at Chapel Hill
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- Riddle, Reed (författare)
- California Institute of Technology
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- Baranec, Christoph (författare)
- University of Hawai'i
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- Hamren, Katherine (författare)
- University of California Santa Cruz
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- Schlawin, Everett (författare)
- Cornell University
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- Covey, Kevin (författare)
- Lowell Observatory
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- Johnson, John Asher (författare)
- Harvard College Observatory
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- Lloyd, James (författare)
- Cornell University
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(creator_code:org_t)
- 2014-06-18
- 2014
- Engelska.
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Ingår i: Astrophysical Journal Supplement Series. - : American Astronomical Society. - 0067-0049 .- 1538-4365. ; 213:1, s. 5-
- Relaterad länk:
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http://arxiv.org/abs...
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https://uu.diva-port... (primary) (Raw object)
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https://cdr.lib.unc....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We present H - and K -band spectra for late-type Kepler Objects of Interest (the "Cool KOIs"): low-mass stars with transiting-planet candidates discovered by NASA’s Kepler Mission that are listed on the NASA Exoplanet Archive. We acquired spectra of 103 Cool KOIs and used the indices and calibrations of Rojas-Ayala et al. to determine their spectral types, stellar effective temperatures, and metallicities, significantly augmenting previously published values. We interpolate our measured effective temperatures and metallicities onto evolutionary isochrones to determine stellar masses, radii, luminosities, and distances, assuming the stars have settled onto the main sequence. As a choice of isochrones, we use a new suite of Dartmouth predictions that reliably include mid-to-late M dwarf stars. We identify five M4V stars: KOI-961 (confirmed as Kepler 42), KOI-2704, KOI-2842, KOI-4290, and the secondary component to visual binary KOI-1725, which we call KOI-1725 B. We also identify a peculiar star, KOI-3497, which has Na and Ca lines consistent with a dwarf star but CO lines consistent with a giant. Visible-wavelength adaptive optics imaging reveals two objects within a 1 arcsec diameter; however, the objects’ colors are peculiar. The spectra and properties presented in this paper serve as a resource for prioritizing follow-up observations and planet validation efforts for the Cool KOIs and are all available for download online using the "data behind the figure" feature.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Astronomy
- Astronomi
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Muirhead, Philip
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Becker, Juliette
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Feiden, Gregory, ...
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Rojas-Ayala, Bár ...
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Vanderburg, Andr ...
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Price, Ellen
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Thorp, Rachel
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Law, Nicholas
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Riddle, Reed
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Baranec, Christo ...
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Hamren, Katherin ...
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Schlawin, Everet ...
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Covey, Kevin
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Johnson, John As ...
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Lloyd, James
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Uppsala universitet