Published September 20, 2014
| Version v1
Journal article
THE BEHAVIOR OF THE PITCH ANGLE OF SPIRAL ARMS DEPENDING ON OPTICAL WAVELENGTH
Creators
- 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)
Description
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
Availability note (English)
Available from http://dx.doi.org/10.1088/2041-8205/793/1/L19Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal Letters
- Journal Volume
- 793
- Journal Issue
- 1
- Journal Page Range
- [5 p.]
- ISSN
- 2041-8205
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46070307
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ASTROPHYSICS; EMISSION SPECTRA; EMISSION SPECTROSCOPY; GALAXIES; INCLINATION; VISIBLE RADIATION
- Descriptors DEC
- ELECTROMAGNETIC RADIATION; PHYSICS; RADIATIONS; SPECTRA; SPECTROSCOPY