INVESTIGADORES
MILLER BERTOLAMI Marcelo Miguel
artículos
Título:
Chemical Abundances of Planetary Nebulae in the Substructures of M31. II. the Extended Sample and a Comparison Study with the Outer-disk Group
Autor/es:
FANG, XUAN; GARCÍA-BENITO, RUBÉN; GUERRERO, MARTÍN A.; ZHANG, YONG; LIU, XIAOWEI; MORISSET, CHRISTOPHE; KARAKAS, AMANDA I.; MILLER BERTOLAMI, MARCELO M.; YUAN, HAIBO; CABRERA-LAVERS, ANTONIO
Revista:
ASTROPHYSICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2018 vol. 853
ISSN:
0004-637X
Resumen:
We report deep spectroscopy of 10 planetary nebulae (PNe) in the Andromeda Galaxy (M31) using the 10.4 m Gran Telescopio Canarias (GTC). Our targets reside in different regions of M31, including halo streams and the dwarf satellite M32, and kinematically deviate from the extended disk. The temperature-sensitive [O iii] λ4363 line is observed in all PNe. For four PNe, the GTC spectra extend beyond 1 μm, enabling the explicit detection of the [S iii] λ6312 and λλ9069, 9531 lines and thus determination of the [S iii] temperature. Abundance ratios are derived and generally consistent with AGB model predictions. Our PNe probably all evolved from low-mass (
