RT Journal Article
T1 Truncated stellar disks in the near infrared I. Observations
A1 Florido, E.
A1 Battaner, E.
A1 Guijarro, A.
A1 Garzón, F.
A1 Castillo Morales, María África
AB We present NIR surface photometry of 11 edge-on galaxies obtained in the course of a long term project aimed at analysing the occurrence and type of the truncation of the outer disks. Observations were carried out at the 1.5 m CST (Carlos Sanchez Telescope) in Tenerife (Spain) using the CAIN infrared camera. 7 galaxies exhibit clear truncation on their disk profiles and 4 galaxies were observed to be clearly untruncated within observational limits. We describe the truncations as real, smooth and complete (as suggested by extrapolation and in the sense that the measured truncation curve goes into the noise at a truncation radius R(tr)), following a decline proportional to (R(tr)-R)(-n) (where R is the radius). Despite its deep photometric reach, the data presented do not permit a detailed exploration of the region where optical data show a second slope. Special care was taken concerning the surface brightness deprojection of edge-on galaxies, which was carried out by two methods, one comprising the inversion of Abel's integral equation and the other following a numerical method. These methods gave nearly identical results. NIR observations of truncations could differ from observations in the optical, since the two domains trace different stellar populations.
PB EDP Sciencies
SN 0004-6361
YR 2006
FD 2006-08
LK https://hdl.handle.net/20.500.14352/51397
UL https://hdl.handle.net/20.500.14352/51397
LA eng
NO © ESO 2006. This paper has been supported by the “Plan Andaluz de Investigación” (FQM-108) and by the “Secretaría de Estado de Política Científica y Tecnológica” (AYA2004-08251-C02-02, ESP2004-06870-C02-02). This research has made use of the Hyper Leda database.
NO Plan Andaluz de Investigación
NO Secretaría de Estado de Política Científica y Tecnológica
DS Docta Complutense
RD 25 dic 2025