Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-10-14
Astronomy and Astrophysics
Astrophysics
6 pages, 3 figures, in press for MNRAS 98
Scientific paper
In this paper we present a data analysis regarding globular clusters as possible extragalactic distance indicators. For this purpose, we collected all velocity dispersion measurements published for galactic and M31 globular clusters. The slope and the zero-point of the Faber-Jackson relation were calibrated using Hipparcos distance measurements, and the relation was applied to extragalactic globular clusters in M31. A distance modulus of 24.12 \pm 0.45 mag was found. This is coherent with what is found by fitting the red giant branches of globular clusters (24.47 \pm 0.07, Holland 98), and is found from the peak of globular clusters luminosity function (24.03 \pm 0.23, Ostriker an d Gnedin 97), but shorter than the 24.7 \pm 0.2 mag (Lanoix et al. 98) and 24.77 \pm 0.11 mag (Feast and Catchpole 97), obtained by using Hipparcos data to calibrate the Cepheid period-luminosity. This calibrated Faber-Jackson relation can now be directly use for other Sc galaxies with resolved globular clusters, as soon as large amounts of spectra will become available, e.g., through the VLT.
Lanoix P.
Nella-Courtois H. Di
Paturel Georges
No associations
LandOfFree
Calibration of the Faber-Jackson relation for M31 globular clusters using Hipparcos data 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 Calibration of the Faber-Jackson relation for M31 globular clusters using Hipparcos data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibration of the Faber-Jackson relation for M31 globular clusters using Hipparcos data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-235761