2001A&A...378...82F


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET09:51:24

2001A&A...378...82F - Astronomy and Astrophysics, volume 378, 82-96 (2001/10-4)

Near infrared observations of the truncation of stellar disks.

FLORIDO E., BATTANER E., GUIJARRO A., GARZON F. and JIMENEZ-VICENTE J.

Abstract (from CDS):

We present a first study of truncation of the stellar disks of spiral galaxies in the near infrared. Observations of NGC 4013, NGC 4217, NGC 6504 and NGC 5981 were made with the CAIN NIR camera on the CST in Tenerife. This wavelength range provides the best description of the phenomenon, not only because extinction effects are minimized, but also because the distribution of the old stellar population is directly obtained. The four galaxies are edge-on and an inversion method was developed to obtain the deprojected profiles. We did not assume any model of the different galactic components. The ``truncation curve'', i.e. T(R)=µ(R)-µD(R), where µ is the actual surface brightness in mag/arcsec2 and µD the exponential disk surface brightness, has been obtained with unprecedented precision. It is suggested that T(R) is proportional to (Rt-R)–1, where Rt is the truncation radius, i.e. the radius beyond which no star is observed.

Abstract Copyright:

Journal keyword(s): galaxies: structure, photometry

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1539 2
2 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 373 1
3 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 256 2
4 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 691 1
5 NGC 5981 GiG 15 37 53.456 +59 23 30.45   14.2       ~ 92 0
6 NGC 6504 G 17 56 05.7188444809 +33 12 30.441250744   13.4       ~ 48 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-09:51:24

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