NOAO > Observing Info > Approved Programs > 2013A-0240
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NOAO > Observing Info > Approved Programs > 2013A-0240 |
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PI: Letizia Stanghellini, NOAO, lstanghellini@noao.edu
Address: PO Box 26732, 950 North Cherry Avenue, Tucson, AZ 85726-6732, USA
CoI: Laura Magrini, Arcetri Observatory
CoI: Viviana Casasola, IRA-INAF
Title: Chemical evolution of two Sculptor galaxies through PN and HII regions abundances
Abstract:
In the context of detecting radial metallicity gradients in spiral galaxies
to constraint the chemical evolutionary models we propose to perform MOS
spectroscopy on two Sculptor galaxies, NGC 247 and NGC 7793, to detect the
emission-line spectra of their planetary nebula (PN) and HII region
populations. The contemporary studies of the two stellar populations will
yield to chemical and time constraining of the models, with the PN abundances
corresponding to the early stages of the galaxies, and the HII region ones
carrying the information of the chemical evolution through out the galaxies
lifetime. Metallicity gradients and chemical enrichment will be determined.
PN have not been detected before in these galaxies, thus the proposed
observations will also yield to their PN luminosity function via the planned
multi-filter pre-imaging.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2013A-0240 |
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