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Title: THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH

Abstract

Based on integral field spectroscopy data from the CALIFA survey, we investigate the possible dependence of spiral arm pitch angle with optical wavelength. For three of the five studied objects, the pitch angle gradually increases at longer wavelengths. This is not the case for two objects where the pitch angle remains constant. This result is confirmed by the analysis of SDSS data. We discuss the possible physical mechanisms to explain this phenomenon, as well as the implications of the results.

Authors:
; ; ;  [1];  [2];  [3]
  1. Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Aptdo. Postal 51 y 216, 72000 Puebla, Pue. (Mexico)
  2. Centro de Radioastronomía y Astrofísica, UNAM, Campus Morelia, Michoacán, México, C.P. 58089 (Mexico)
  3. Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, U. P. Adolfo López Mateos, Zacatenco, 07730 México, D.F. (Mexico)
Publication Date:
OSTI Identifier:
22364975
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 793; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; EMISSION SPECTRA; EMISSION SPECTROSCOPY; GALAXIES; INCLINATION; VISIBLE RADIATION

Citation Formats

Martínez-García, Eric E., Puerari, Ivânio, Rosales-Ortega, F. F., Luna, A., González-Lópezlira, Rosa A., and Fuentes-Carrera, Isaura, E-mail: ericmartinez@inaoep.mx. THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH. United States: N. p., 2014. Web. doi:10.1088/2041-8205/793/1/L19.
Martínez-García, Eric E., Puerari, Ivânio, Rosales-Ortega, F. F., Luna, A., González-Lópezlira, Rosa A., & Fuentes-Carrera, Isaura, E-mail: ericmartinez@inaoep.mx. THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH. United States. doi:10.1088/2041-8205/793/1/L19.
Martínez-García, Eric E., Puerari, Ivânio, Rosales-Ortega, F. F., Luna, A., González-Lópezlira, Rosa A., and Fuentes-Carrera, Isaura, E-mail: ericmartinez@inaoep.mx. Sat . "THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH". United States. doi:10.1088/2041-8205/793/1/L19.
@article{osti_22364975,
title = {THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH},
author = {Martínez-García, Eric E. and Puerari, Ivânio and Rosales-Ortega, F. F. and Luna, A. and González-Lópezlira, Rosa A. and Fuentes-Carrera, Isaura, E-mail: ericmartinez@inaoep.mx},
abstractNote = {Based on integral field spectroscopy data from the CALIFA survey, we investigate the possible dependence of spiral arm pitch angle with optical wavelength. For three of the five studied objects, the pitch angle gradually increases at longer wavelengths. This is not the case for two objects where the pitch angle remains constant. This result is confirmed by the analysis of SDSS data. We discuss the possible physical mechanisms to explain this phenomenon, as well as the implications of the results.},
doi = {10.1088/2041-8205/793/1/L19},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 1,
volume = 793,
place = {United States},
year = {2014},
month = {9}
}