The stellar Initial Mass Function of the solar neighbourhood revealed by Gaia
Date Issued
2019
Author(s)
Abstract
I use a sample of more than 120,000 stars in the solar neighbourhood with
parallaxes, magnitudes and colours estimated with unprecedented accuracy by the
second data release of the Gaia mission to derive the initial mass function of
the Galactic disc. A full-forward technique is used to take into account for
the population of unresolved binaries, the metallicity distribution, the star
formation history and their variation across the Galactic disk as well as all
the observational effects. The shape of the initial mass function is well
represented by a segmented power-law with two breaks at characteristic masses.
It has a maximum at M~0.15 Ms with significant flattening (possibly a
depletion) at lower masses and a slope of alpha=-1.34 +/- 0.07 in the range
0.25
Volume
489
Issue
2
Start page
2377
Issn Identifier
0035-8711
Ads BibCode
2019MNRAS.489.2377S
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
stz2093.pdf
Description
Pdf editoriale
Size
3.73 MB
Format
Adobe PDF
Checksum (MD5)
6a1380ba5f10034f3e320ad43aebc3de