dc.contributor.author | Lyubchik, Yuri | |
dc.contributor.author | Jones, H.R.A. | |
dc.contributor.author | Pavlenko, Yakiv V. | |
dc.contributor.author | Pinfield, D.J. | |
dc.contributor.author | Covey, Kevin R. | |
dc.date.accessioned | 2012-08-06T10:00:29Z | |
dc.date.available | 2012-08-06T10:00:29Z | |
dc.date.issued | 2012-05 | |
dc.identifier.citation | Lyubchik , Y , Jones , H R A , Pavlenko , Y V , Pinfield , D J & Covey , K R 2012 , ' Values of v sin i-s for late-type stars from spectral synthesis in the K-band region. ' , Monthly Notices of the Royal Astronomical Society , vol. 422 , no. 3 , pp. 2195-2201 . https://doi.org/10.1111/j.1365-2966.2012.20762.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | http://hdl.handle.net/2299/8789 | |
dc.description.abstract | We analyse medium-resolution spectra (R similar to 18 000) of 19 late type dwarfs in order to determine v sin i values using synthetic rather than observational template spectra. For this purpose, observational data around 2.2 mu m for stars with spectral classes from G8V to M9.5V were modelled. We find that the Na i (2.2062- and 2.2090-mu m) and 12CO 20 band features are modelled well enough to use for v sin i determination without the need for suitable observational template spectra. Within the limit of the resolution of our spectra, we use synthetic spectra templates to derive v sin i values consistent with those derived in the optical regime using observed templates. We quantify the errors in our v sin i determination due to incorrect choice of model parameters Teff, log g, vmicro, [Fe/H] or full width at half-maximum and show that they are typically less than 10 per cent. We note that the spectral resolution of our data (similar to 16 km s-1) limited this study to relatively fast rotators and that a resolution of 60 000 will be required to access most late-type dwarfs. | en |
dc.format.extent | 7 | |
dc.format.extent | 514908 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.title | Values of v sin i-s for late-type stars from spectral synthesis in the K-band region. | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
dc.date.embargoedUntil | 2012-12-01 | |
rioxxterms.versionofrecord | 10.1111/j.1365-2966.2012.20762.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |