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DETAILED ABUNDANCES OF STARS WITH SMALL PLANETS DISCOVERED BY KEPLER . I. THE FIRST SAMPLE
We present newly derived stellar parameters and the detailed abundances of 19 elements of seven stars with small planets discovered by NASA's Kepler Mission. The stellar parameters and abundances are derived from high signal-to-noise ratio, high-resolution echelle spectroscopy obtained with the...
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Published in: | The Astrophysical journal 2015-12, Vol.815 (1), p.5 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We present newly derived stellar parameters and the detailed abundances of 19 elements of seven stars with small planets discovered by NASA's Kepler Mission. The stellar parameters and abundances are derived from high signal-to-noise ratio, high-resolution echelle spectroscopy obtained with the 10 m Keck I telescope and High Resolution Echelle Spectrometer using standard spectroscopic techniques. We compare our derived abundances to the condensation temperature of the elements; a correlation between the two has been suggested as a possible signature of rocky planet formation. None of the stars demonstrate the putative rocky planet signature, despite at least three of the stars having rocky planets estimated to contain enough refractory material to produce the signature, if real. More detailed abundance analysis of stars known to host small planets are needed to verify our results and place ever more stringent constraints on planet formation models. |
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ISSN: | 1538-4357 0004-637X 1538-4357 |
DOI: | 10.1088/0004-637X/815/1/5 |