IALP 13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
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:
GUERRERO, MARTÍN A.; MORISSET, CHRISTOPHE; YUAN, HAIBO; FANG, XUAN; ZHANG, YONG; KARAKAS, AMANDA I.; CABRERA-LAVERS, ANTONIO; GARCÍA-BENITO, RUBÉN; LIU, XIAOWEI; MILLER BERTOLAMI, MARCELO M.
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 (
