Publication
Spiral modes in galaxies.
Via Fourier analysis, applied to broad-band images of a sample of spiral galaxies, the relative contribution of each spiral mode to the spiral arms, as a...
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TalkSpirals and rings: how do they form? What are their structure and properties?I will propose a new theory to explain the formation and properties of rings and spirals in barred galaxies, focusing on a comparison of theoretical results to...
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PublicationStar formation and AGNWe analyze the data from narrow band H-alpha and forbidden O III CCD imaging of a sample of nearby spiral galaxies with active nuclei. The results show that the...
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PublicationStar formation efficiency patterns in the spiral arms of M51The distribution of ionized, molecular, and atomic hydrogen in the disk and especially along the spiral arms of the Whirlpool galaxy, M51, is investigated by...
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PublicationStar formation in Seyfert galaxiesAn analysis of the IRAS data for a sample of classical (optically selected) Seyfert galaxies is presented. The IRAS fluxes at 25 micron, 60 micron, and 100...
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PublicationStar formation in the spiral arms of NGC 4321. I - CO observationsSeveral positions in the southern spiral arm and the interarm disk of NGC 4321 have been observed in CO (J = 1 to 0) using the NRO 45 m telescope at Nobeyama...
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PublicationStar formation rates, efficiencies and initial mass functions in spiral galaxiesUsing broad band photometry, a new method is derived to evaluate relative (arm with respect to the interarm disk) star formation rates and relative star...
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PublicationStatistics and properties of H II regions in NGC 6814We present a new H-alpha image of high quality of the grand-design galaxy NGC 6814, and describe statistical properties of the H II region population. We have...
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PublicationStellar and Gas Kinematics in the Core and Bar Regions of M100Two-dimensional maps of the stellar and gas kinematics of the bar and starbursting circumnuclear region in the barred spiral galaxy M100 are presented. In this...