Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610

Details Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610 Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610

2004-09-15

arxiv.org/abs/astro-ph/0409385v1

Astronomy and Astrophysics

Astrophysics

15 pages, 9 figures, accepted by AJ

Scientific paper

10.1086/425884

The outer region (0.75--1.25 r_e in the B-band) of the merger-remnant elliptical NGC 3610 is studied using extremely high signal to noise Keck spectra, with a supplementary spectrum of the galaxy center. Stellar population parameters -- age, [Z/H], [$\alpha$/Fe] -- are measured in several apertures along the slit. Using the multi-index simultaneous fitting method of Proctor et al. (2004), no significant stellar population gradients are detected in the outer parts of the galaxy. The overall gradients relative to the galaxy center are consistent with those found in many other early-type galaxies, though the metallicity gradient is much steeper than would be expected if NGC 3610 formed in a major merger event. Standard analysis methods using the H$\beta$ index are found to produce spurious radially variable gradients.

Affiliated with

Also associated with

No associations

Rating

Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610 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 Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing Spectral Line Gradients Beyond One Effective Radius in NGC 3610 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-199469