3 GLOBULAR-CLUSTER CANDIDATES IN THE DIRECTION OF THE BULGE SHOWN TO BE SMALL EMISSION NEBULAE

Citation
E. Bica et al., 3 GLOBULAR-CLUSTER CANDIDATES IN THE DIRECTION OF THE BULGE SHOWN TO BE SMALL EMISSION NEBULAE, Astronomy and astrophysics, 303(3), 1995, pp. 747-752
Citations number
23
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046361
Volume
303
Issue
3
Year of publication
1995
Pages
747 - 752
Database
ISI
SICI code
0004-6361(1995)303:3<747:3GCITD>2.0.ZU;2-Y
Abstract
We carried out spectrophotometry in the range 4000-7000 Angstrom and V , I and Gunn z imaging of the initially thought to be globular cluster candidates in the direction of the Galactic bulge TJ 5 and TJ 23 (Ter zan & Ju 1980) and the one reported by Bica (1994). The three objects turned out to be small nebulae in rich stellar fields. Diagnostic diag rams for emission line ratios indicate that TJ 5 and TJ 23 are planeta ry nebulae. The locus of the third object strongly suggests it to be a supernova remnant, with very strong [NII](lambda 6584) and strong [SI I](lambda lambda 6717,31). The sizes of the nebulae are d=28'', 45'' a nd 49'', and the reddening derived from the Balmer decrement indicates E(B - V)=0.86, 1.81 and 0.19, respectively for TJ 5, TJ 23 and the su pernova remnant.