dc.creator |
Dragomir, Diana |
|
dc.creator |
Matthews, Jaymie M. |
|
dc.creator |
Eastman, Jason D. |
|
dc.creator |
Cameron, Chris |
|
dc.creator |
Howard, Andrew W. |
|
dc.creator |
Guenther, David B. |
|
dc.creator |
Kuschnig, Rainer |
|
dc.creator |
Moffat, Anthony F. J. |
|
dc.creator |
Rowe, Jason F. |
|
dc.creator |
Rucinski, Slavek M. |
|
dc.date.accessioned |
2018-02-22T14:50:03Z |
|
dc.date.available |
2018-02-22T14:50:03Z |
|
dc.date.issued |
2013-07-20 |
|
dc.identifier.issn |
2041-8205 |
|
dc.identifier.uri |
http://library2.smu.ca/handle/01/27285 |
|
dc.description |
Publisher's Version/PDF |
|
dc.description.abstract |
Through photometric monitoring of the extended transit window of HD 97658b with the MOST space telescope, we have found that this exoplanet transits with an ephemeris consistent with that predicted from radial velocity measurements. The mid-transit times are 5.6[sigma] earlier than those of the unverified transit-like signals reported in 2011, and we find no connection between the two sets of events. The transit depth together with our determined stellar radius (R[subscript star] = 0.703[superscript +0.039 subscript −0.034] R[subscript circled dot]) indicates a 2.34[superscript +0.18 subscript −0.15] R[subscript circled cross] super-Earth. When combined with the radial velocity determined mass of 7.86 [plus or minus] 0.73 M[subscript circled cross], our radius measure allows us to derive a planet density of 3.44[superscript +0.91 subscript −0.82] g cm[superscript −3]. Models suggest that a planet with our measured density has a rocky core that is enveloped in an atmosphere composed of lighter elements. The star of the HD 97658 system is the second brightest known to host a transiting super-Earth, facilitating follow-up studies of this not easily daunted, warm and likely volatile-rich exoplanet. |
en_CA |
dc.description.provenance |
Submitted by Betty McEachern (betty.mceachern@smu.ca) on 2018-02-22T14:50:03Z
No. of bitstreams: 1
Guenther_David_B_article_2013_a.pdf: 1662314 bytes, checksum: bd346e5b26415043db5b861c03e85d3a (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2018-02-22T14:50:03Z (GMT). No. of bitstreams: 1
Guenther_David_B_article_2013_a.pdf: 1662314 bytes, checksum: bd346e5b26415043db5b861c03e85d3a (MD5)
Previous issue date: 2013 |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
IOP Publishing Limited |
en_CA |
dc.relation.uri |
https://dx.doi.org/doi:10.1088/2041-8205/772/1/L2 |
|
dc.subject.lcsh |
Extrasolar planets |
|
dc.subject.lcsh |
Astronomical photometry |
|
dc.title |
MOST detects transits of HD 97658b, a warm, likely volatile-rich super-Earth |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
Astrophysical Journal Letters 772(1), L2. (2013) |
en_CA |