Star Formation within H-II Regions of Messier 106
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Transcript of Star Formation within H-II Regions of Messier 106
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Star Formation within H-II Regions of
Messier 106BY ZOE ZONTOS
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Introduction• Messier 106 (NGC 4258)• Constellation: Canes Venatici• RA: 12h 18m 57s | Dec: +47 deg 18’ 13”• Apparent mag: 8.4
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H-II Regions
What are H-II regions?
- Low-density clouds of ionized gas.
- Contain ionized atomic hydrogen and are called H-II (where as H-I regions are neutral atomic hydrogen).
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H-II Regions (Continued)• Dominant spectral line for H-II regions has a wavelength
of 656.3 m known as the H-alpha line.• Measuring the Hα luminosity emitted by the ionized gas.• Found in nebulae, star clusters, and galaxies (usually
spirals and irregular).
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Project Goals (Initially and Revised)• Observe 4-5 galaxies • Compare H-II regions and star formation rates
• Objects observed: • Messier 106
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Data Collection and Reduction• Instrument: STX-16803 SBIG• Telescope: ERAU RC 1-m• Main filters used: Hα and r• Exposure times: 1-5 min, 20 min
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ResultsHα Filter
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ResultsR Filter
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Ongoing Results
- Align my r and Hα images- Determining the flux and magnitudes for the regions- Take flux ratios- Use ‘phot’ command- Combine separate filter images
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Problems
- Not enough data
- Use of filters
- Weather
- R and Hα lines overlapping
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Questions?