Rotational velocities of HR stars (Diaz+, 2011)

Details Rotational velocities of HR stars (Diaz+, 2011) Rotational velocities of HR stars (Diaz+, 2011)

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ycat..35319143d&link_type=abstract

VizieR On-line Data Catalog: J/A+A/531/A143. Originally published in: 2011A&A...531A.143D

Statistics

Computation

Stars: Nearby, Rotational Velocities

Scientific paper

We propose a method for measuring the projected rotational velocity vsini with high precision even in spectra with blended lines. Though not automatic, our method is designed to be applied systematically to large numbers of objects without excessive computational requirement.
We calculated the cross correlation function (CCF) of the object spectrum against a zero-rotation template and used the Fourier transform (FT) of the CCF central maximum to measure the parameter vsini taking the limb darkening effect and its wavelength dependence into account. The procedure also improves the definition of the CCF base line, resulting in errors related to the continuum position under 1% even for vsini=280km/s. Tests with high-resolution spectra of F-type stars indicate that an accuracy well below 1% can be attained even for spectra where most lines are blended.
(1 data file).

Affiliated with

Also associated with

No associations

Rating

Rotational velocities of HR stars (Diaz+, 2011) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Rotational velocities of HR stars (Diaz+, 2011), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotational velocities of HR stars (Diaz+, 2011) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1675602