The Luminosity Function and Initial Mass Function in the Galactic Bulge

Details The Luminosity Function and Initial Mass Function in the Galactic Bulge The Luminosity Function and Initial Mass Function in the Galactic Bulge

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...19110706h&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #107.06; Bulletin of the American Astronomical Society, Vol. 29, p.1383

Astronomy and Astrophysics

Astronomy

Scientific paper

We present deep photometry obtained with the HST in two fields in the Galactic bulge. We derive a luminosity function down to roughly I=24, (V=27.5), which corresponds to masses of approximately 0.3 solar masses. The luminosity function from the turnoff down to this level is similar to that observed in the solar neighborhood. We derive a mass function using both an empirical local mass-luminosity relation and a mass-luminosity relation from recent stellar model calculations; for the low-mass stars observed here, the present-day mass function should directly reflect the initial mass function. We include the effects of random and systematic photometric errors, as well as the possible presence of binaries, in our calculations. We find evidence for a break in the mass function slope around 0.5 solar masses, with a significantly shallower slope at lower masses, similar to what has been observed in the solar neighborhood. It does not appear that the Bulge is overabundant in low mass stars.

Affiliated with

Also associated with

No associations

Rating

The Luminosity Function and Initial Mass Function in the Galactic Bulge does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Luminosity Function and Initial Mass Function in the Galactic Bulge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Luminosity Function and Initial Mass Function in the Galactic Bulge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1177497