Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices

Details Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...429..819m&link_type=abstract

Astronomy and Astrophysics, v.429, p.819-823 (2005)

Astronomy and Astrophysics

Astrophysics

8

Galaxies: Elliptical And Lenticulars, Cd, Galaxies: Photometry

Scientific paper

As a complement to the data collected and discussed in Paper I of this series, 2MASS near-IR images have been used, in connection with available V light aperture photometry, to derive the colours V-J, V-K, J-H and J-K within the effective aperture A_e: nearly the same complete sample of 110 E-type galaxies is treated. In Paper I these were classified, based on morphological criteria, into the ``peculiar'' (or Pec) and ``normal'' (or Nop) subsamples. For the Nop subsample, the derived colour indices are tightly related to the galaxy masses, as measured by the central velocity dispersion σ0, although with rather small slopes as regards J-H and J-K. For the Pec subsample, the V-J and V-K colours behave as UBV and line-indices: part of the objects show blue residuals from the appropriate colour-σ0 regression, which is evidence of a younger population mixed with the ``normal'' one traced by the Nop regressions; the other shows no deviations from the Nop subsample. The distinction among Pec objects between the YP family (NGC 2865 type), and the NP one (NGC 3923 type), is statistically supported, and generally confirmed in specific cases.
Based in part on observations collected at the Observatoire de Haute-Provence.
Table 4 is only available in electonic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/429/819

Affiliated with

Also associated with

No associations

Rating

Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices 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 Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Peculiarities and populations in elliptical galaxies. II. Visual-near IR colours as population indices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-893906