Scientific interests:

Planetary Nebulae (PNe):

Synthetic infrared spectra and colour indices

Radio emission of PNe

Evolution and distribution in the Galaxy

Development of Distance scales

Astrophysics of the interstellar medium:

Radio observations of ISM Masers

Radio observations of Ammonia in Molecular Clouds

Radio observations of photoionized regions

Stellar Astronomy:

Horizontal-branch stars and their characteristics

Circumstellar envelopes of AGB stars

Ultraviolet emission of red giants

Observation of spectroscopic binaries

Young stellar clusters:

Distances and Galactic distribution

Massive stars and their associated HII regions

Young stellar objects

Teaching and History of Astronomy:

Outreach

Development of teaching resources

Astronomy in São Paulo in the 20th Century