Planetary nebulae and H ii regions in the spiral galaxy NGC 300 - Clues on the evolution of abundance gradients and on AGB nucleosynthesis

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Table 1

Main properties of NGC 300.

Parameter	Value


RA (J2000)	00^h54^m53.48^s
Dec (I2000)	−37°41′03.8′′
Distance	1.88 Mpc^a
R ₂₅	9.75′ (5.33 kpc)^b
Inclination	39.8°
Heliocentric radial velocity	144 km s^-1^c
	−17.88

Notes.

^(a)

Gieren et al. (2005);

^(b)

HYPERLEDA database, Paturel et al. (2003);

^(c)

de Vaucouleurs et al. (1991).

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