The radio properties of the OH megamaser galaxy IRAS 02524+2046

Abstract

We present results from VLBI observations of continuum and OH line emission in IRAS 02524+2046 and also arcsecond-scale radio properties of this galaxy using VLA archive data. We found that there is no significant detection of radio continuum emission from VLBI observations. The arcsecond-scale radio images of this source show no clear extended emission, the total radio flux density at L and C band are around 2.9 mJy and 1.0 mJy respectively, which indicate a steep radio spectral index between the two band. Steep spectral index, low brightness temperature and high $q$-ratio (the FIR to the radio flux density), which are three critical indicators in classification of radio activity in the nuclei of galaxies, are all consistent with the classification of this source as a starburst galaxy from its optical spectrum. The high-resolution line profile show that both of \textbf{the 1665 and 1667 MHz OH maser} line have been detected which show three and two clear components respectively. The channel maps show that the maser emission are distributed in a region $\sim$ 210 pc $\times$ 90 pc, the detected maser components at different region show similar double spectral feature, which might be an evidence that this galaxy is at a stage of major merger as seen from the optical morphology.

arXiv comment13pages,9 figures, accepted by A&A

References in corpus (17)

• Radio Properties of Infrared Selected Galaxies in the IRAS 2 Jy Sample
• A Search for OH Megamasers at z > 0.1. III. The Complete Survey
• Morphology and Molecular Gas Fractions of Local Luminous Infrared Galaxies as a Function of Infrared Luminosity and Merger Stage
• Continuum and spectral line observations of the OH Megamaser galaxy Arp 220
• The OH Megamaser Luminosity Function
• Star formation and AGN activity in a sample of local Luminous Infrared Galaxies through multi-wavelength characterization
• Sensitive VLBI Studies of the OH Megamaser Emission from IRAS 17208-0014
• High-resolution Imaging of the OH Megamaser Emission in IRAS12032+1707 and IRAS14070+0525
• An embedded active nucleus in the OH megamaser galaxy IRAS16399-0937
• The Discovery of Time Variability in OH Megamasers
• An Arecibo Survey for Zeeman Splitting in OH Megamaser Galaxies
• Constraints on OH Megamaser Excitation from a Survey of OH Satellite Lines
• Gemini IFU, VLA and HST observations of the OH Megamaser galaxy IRASF23199+0123: the hidden monster and its outflow
• On the X-ray Properties of OH Megamaser Sources: Chandra Snapshot Observations
• Star formation and gas inflows in the OH Megamaser galaxy IRAS03056+2034
• Simultaneous spectra and radio properties of BL Lac's
• Gemini IFU, VLA, and HST observation of the OH Megamaser Galaxy IRAS17526+3253

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• Radio continuum properties of OH megamaser galaxies
• Radio continuum and OH line emission of high-z OH megamaser galaxies
• Accurate polarization calibration of FAST spectral data for measurements of Zeeman splittings of OH megamasers in IRAS 02524+2046