Hydrogen lines in LAMOST low-resolution spectra of RR Lyrae stars.

Authors :: Yang, F.
Deng, L.
Liu, C.
Carlin, J.L.
Newberg, H.Jo
Carrell, K.
Justham, S.
Zhang, X.
Bai, Z.
Wang, F.
Zhang, H.
Wang, K.
Xin, Y.
Xu, Y.
Gao, S.
Zhang, Y.
Li, J.
Zhao, Y.
Source :: New Astronomy. Jan2014, Vol. 26, p72-76. 5p.
Publication Year :: 2014
Abstract: Highlights: [•] We select single epoch spectra of RR Lyrae stars from LAMOST pilot survey. [•] We use cross-correlation method to study the differential radial velocities. [•] We capture three RR Lyrae stars in fast expansion phase with hypersonic shock wave features in the spectra. [ABSTRACT FROM AUTHOR]