Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-08-13
Astron.J. 128 (2004) 2288
Astronomy and Astrophysics
Astrophysics
Accepted for publication in The Astronomical Journal, Vol. 128, Nov. 2004, 13 pages, 4 figures, AASTeX v5.0
Scientific paper
10.1086/425055
There are extraordinarily few far ultraviolet observations of RR Lyrae stars in the literature. We present Hubble Space Telescope FUV (~1600 A) imaging of the core of the globular cluster NGC 1851. Eleven new variables whose light curves are consistent with those of RR Lyr stars are discovered, increasing the total number of RR Lyr known in this cluster by a substantial amount. In agreement with basic physical theory, the observed amplitude of the variables in the FUV is enormous compared with the century of past optical observations, ranging up to 4 mag. HST STIS FUV observations of cluster cores may prove an especially effective means of obtaining a near-complete census of RR Lyr stars, combining high angular resolution, suppression of luminous red stars, and data where the stellar pulsation amplitudes are greatly enhanced. Attention is also drawn to a peculiar blue object in the cluster that is most probably a low mass x-ray binary system in quiescence.
Anderson Scott F.
Downes Ronald A.
Homer Lee
Margon Bruce
No associations
LandOfFree
Far-Ultraviolet Observations of RR Lyrae Stars in the Core of NGC 1851 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 Far-Ultraviolet Observations of RR Lyrae Stars in the Core of NGC 1851, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Far-Ultraviolet Observations of RR Lyrae Stars in the Core of NGC 1851 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-200549