Infrared Echelle Spectroscopy of Palomar6 and M71

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Accepted for publication in AJ (Nov. 2004)

Scientific paper

10.1086/425047

We present high-resolution infrared echelle spectroscopy for the globular clusters Palomar 6 and M71. Our mean heliocentric radial velocity of Palomar 6 is +180.6 +/- 3.2 km sec/s and is 20 km/s lower than that found by Minniti in 1995. Contrary to the previous metallicity estimates using low-resolution spectroscopy, our results show that Palomar~6 has an intermediate metallicity with [Fe/H] = -1.0 +/- 0.1 and is slightly more metal-poor than M71. Reasonable changes in the surface temperature or the microturbulent velocity of the model atmospheres do not affect [Fe/H] at more than +/- 0.2 dex. In spite of its high metallicity, based on the spectrum of a single cluster member the [Si/Fe] and [Ti/Fe] ratios of Palomar~6 appear to be enhanced by 0.4 dex and 0.5 dex, respectively, suggesting that the Galactic inner halo may have experienced a very rapid chemical enrichment history.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Infrared Echelle Spectroscopy of Palomar6 and M71 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 Infrared Echelle Spectroscopy of Palomar6 and M71, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Echelle Spectroscopy of Palomar6 and M71 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-696503

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.