SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies [PDF]
, 2017 We perform Jeans anisotropic modeling (JAM) on elliptical and spiral galaxies from the MaNGA DR13 sample. By comparing the stellar mass-to-light ratios estimated from stellar population synthesis and from JAM, we find a systematic variation of the ...
Sdss-Iv MaNGA +13 more
semanticscholar +1 more source
Measuring the stellar initial mass function [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe birth of stars and the formation of galaxies are cornerstones of modern astrophysics. While much is known about how galaxies globally and their stars individually form and evolve, one fundamental property that affects both remains elusive.
openaire +3 more sources
Towards an initial mass function for giant planets [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 10 pages, 9 figures; submitted to ...
Daniel Carrera +3 more
openaire +3 more sources
The Low-mass Stellar Initial Mass Function in Nearby Ultrafaint Dwarf Galaxies
The Astrophysical JournalThe stellar initial mass function (IMF) describes the distribution of stellar masses that form in a given star formation event. The long main-sequence lifetimes of low-mass stars mean that the IMF in this regime (below ∼ 1 M _⊙ ) can be investigated ...
Carrie Filion +5 more
doaj +1 more source
Constraining the Black Hole Initial Mass Function with LIGO/Virgo Observations
Astrophysical Journal, 2019 Prior to the detection of black holes (BHs) via the gravitational waves (GWs) that they generate at merger, the presence of BHs was inferred in X-ray binaries, mostly via dynamical measurements, with masses in the range between ∼5 and 20 M⊙.
R. Perna +4 more
semanticscholar +1 more source
The global mass functions of 35 Galactic globular clusters - II. Clues on the initial mass function and black hole retention fraction [PDF]
, 2017 In this paper, we compare the mass function slopes of Galactic globular clusters recently determined by Sollima & Baumgardt with a set of dedicated N-body simulations of star clusters containing between 65 000 and 200 000 stars.
H. Baumgardt, A. Sollima
semanticscholar +1 more source
MUSE observations of M87: radial gradients for the stellar initial-mass function and the abundance of Sodium [PDF]
, 2017 Based on MUSE integral-field data we present evidence for a radial variation at the low-mass end of the stellar initial-mass function (IMF) in the central regions of the giant early-type galaxy NGC4486 (M87).
M. Sarzi +4 more
semanticscholar +1 more source
Constraining the z ∼ 1 Initial Mass Function with HST and JWST Lensed Stars in MACS J0416.1−2403
The Astrophysical JournalOur understanding of galaxy properties and evolution is contingent on knowing the initial mass function (IMF), and yet to date the IMF is constrained only to local galaxies.
Sung Kei Li +21 more
doaj +1 more source
The Astrophysical Journal, 2023 It has been argued that the low-mass primordial stars ( m _Pop III ≤ 0.8 M _⊙ ) are likely to enter the main sequence and hence may possibly be found in present-day galaxies.
Shubham P. Raghuvanshi, Jayanta Dutta
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The optimally-sampled galaxy-wide stellar initial mass function - Observational tests and the publicly available GalIMF code [PDF]
, 2017 Here we present a full description of the integrated galaxy-wide initial mass function (IGIMF) theory in terms of the optimal sampling and compare it with available observations.
Zhiqiang Yan +4 more
semanticscholar +1 more source