The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2

Details The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2 The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aj....120..131m&link_type=abstract

The Astronomical Journal, Volume 120, Issue 1, pp. 131-138.

Astronomy and Astrophysics

Astronomy

11

Galaxies: Abundances, Galaxies: Elliptical And Lenticular, Cd, Galaxies: Stellar Content

Scientific paper

In order to derive the ratio of α-elements to iron in galaxies, we have observed the strongest TiO band heads of the γ and γ' systems at 7000-7500 Å in a sample of a dozen early-type galaxies. The equivalent widths of the TiO bands are compared with synthetic spectra for single-aged stellar populations and composite galaxy models, all computed with [α/Fe]=0.0 and +0.3. The same method is also applied to the and Mg2 Lick indices for the sample galaxies. The results obtained are [Ti/Fe]~[Mg/Fe]~+0.3, indicating a clear enhancement of the α-elements-to-iron ratio for our sample of early-type galaxies. Based on observations in the Observatório do Pico dos Dias, operated by the Laboratório Nacional de Astrofísica/CNPq/MCT, Brazil.

Affiliated with

Also associated with

No associations

Rating

The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2 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 The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Ratio of α-Elements to Iron in Early-Type Galaxies from TIO and MG2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1717540