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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/29040

Title: Near infrared observations of the truncation of stellar disks
Authors: Florido Navío, Estrella
Battaner, E.
Guijarro Román, A.
Garzón, F.
Jiménez Vicente, Jorge
Issue Date: 2001
Abstract: We present a first study of truncation of the stellar disks of spiral galaxies in the near infrared. Observations of NGC4013, NGC4217, NGC6504 and NGC5981 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)= mu(R)- mu_{D}(R), where mu is the actual surface brightness in mag/arcsec^2 and mu_{D} the exponential disk surface brightness, has been obtained with unprecedented precision. It is suggested that T(R) is proportional to (R_{t}-R)^{-1}, where R_{t} is the truncation radius, i.e. the radius beyond which no star is observed.
Sponsorship: This paper has been supported by the "Plan Andaluz de Investigacion'' (FQM-108) and by the "Secretaría de Estado de Política Científica y Tecnológica'' (AYA2000-1574).
Publisher: EDP Sciences
Keywords: Galaxies
Structure
Photometry
URI: http://hdl.handle.net/10481/29040
ISSN: 0004-6361
1432-0746
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Florido, E.; et al. Near infrared observations of the truncation of stellar disks. Astronomy and Astrophysics, 378(1): 82-96 (2001). [http://hdl.handle.net/10481/29040]
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