Three globular cluster candidates in the direction of the bulge shown to be small emission nebulae.

BICA, EDUARDO; CLARIA OLMEDO, JUAN JOSÉ; BONETTO, CARLOS ALBERTO; PIATTI, ANDRÉS E.; ORTOLANI, S.; BARBUY, B.

ASTRONOMY AND ASTROPHYSICS

Año: 1995 vol. 303 p. 747 - 752

0004-6361

We carried out spectrophotometry in the range 4000-7000A and V, I and Gunn z imaging of the initially thought to be globular cluster candidates in the direction of the Galactic bulge TJ5 and TJ23 (Terzan & Ju 1980) and the one reported by Bica (1994). The three objects turned out to be small nebulae in rich stellar fields. Diagnostic diagrams for emission line ratios indicate that TJ5 and TJ23 are planetary nebulae. The locus of the third object strongly suggests it to be a supernova remnant, with very strong [NII]lambda6584_ and strong [SII]lambdaλ6717,31_. The sizes of the nebulae are d=28", 45"and 49", and the reddening derived from the Balmer decrement indicates E(B-V)=0.86, 1.81 and 0.19, respectively for TJ5, TJ23 and the supernova remnant.