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Constraining the Initial Mass Function via Stellar Transients

Universe
The stellar initial mass function (IMF) represents a fundamental quantity in astrophysics and cosmology describing the mass distribution of stars from low mass all the way up to massive and very massive stars. It is intimately linked to a wide variety of
Francesco Gabrielli, Lumen Boco, Giancarlo Ghirlanda, Om Sharan Salafia, Ruben Salvaterra, Mario Spera, Andrea Lapi   +6 more
doaj   +3 more sources

The relationship between the prestellar core mass function and the stellar initial mass function [PDF]

Astronomy & Astrophysics, 2007
7 pages, 3 figures, A&A in ...
Goodwin, S. P., Nutter, David John, Kroupa, P., Ward-Thompson, Derek, Whitworth, Anthony Peter   +4 more
openaire   +7 more sources

Probing the Milky Way Stellar and Brown Dwarf Initial Mass Function with Modern Microlensing Observations

The Astrophysical Journal Letters, 2023
We use recent microlensing observations toward the central bulge of the Galaxy to probe the overall stellar plus brown dwarf initial mass function (IMF) in these regions well within the brown dwarf domain. We find that the IMF is consistent with the same
Gilles Chabrier, Romain Lenoble
doaj   +1 more source

The Initial Mass Function and Other Stellar Properties Across the Core of the Hydra I Cluster

The Astrophysical Journal, 2023
The Hydra I cluster offers an excellent opportunity to study and compare the relic old stellar populations in the core of its two brightest galaxies. In addition, the differing kinematics of the two galaxies allows a test of the local validity of general
Ilaria Lonoce, W. L. Freedman, A. Feldmeier-Krause   +2 more
doaj   +1 more source

Variation of the High-mass Slope of the Stellar Initial Mass Function: Theory Meets Observations

The Astrophysical Journal, 2023
We present observational evidence of a correlation between the high-mass slope of the stellar initial mass function (IMF) in young star clusters and their stellar surface density, σ _* .
Sami Dib
doaj   +1 more source

Mapping the core mass function to the initial mass function [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
13 pages, 15 figures, accepted by MNRAS on 17 April ...
Guszejnov, Dávid, Hopkins, Philip F.
openaire   +3 more sources

A Novel Survey for Young Substellar Objects with the W-band Filter. VI. Spectroscopic Census of Substellar Members and the IMF of the σ Orionis Cluster

The Astrophysical Journal, 2023
Low-mass stars and substellar objects are essential in tracing the initial mass function (IMF). We study the nearby young σ Orionis cluster ( d ∼ 408 pc, age ∼ 1.8 Myr) using deep near-infrared (NIR) photometric data in the J , W , and H bands from ...
Belinda Damian, Jessy Jose, Beth Biller, Gregory J. Herczeg, Loïc Albert, Katelyn Allers, Zhoujian Zhang, Michael C. Liu, Sophie Dubber, KT Paul, Wen-Ping Chen, Bhavana Lalchand, Tanvi Sharma, Yumiko Oasa   +13 more
doaj   +1 more source

THE HIGH-MASS STELLAR INITIAL MASS FUNCTION IN M31 CLUSTERS [PDF]

The Astrophysical Journal, 2015
11 pages, 7 Figures, submitted to ApJ.
Daniel R. Weisz, L. Clifton Johnson, Daniel Foreman-Mackey, Andrew E. Dolphin, Lori C. Beerman, Benjamin F. Williams, Julianne J. Dalcanton, Hans-Walter Rix, David W. Hogg, Morgan Fouesneau, Benjamin D. Johnson, Eric F. Bell, Martha L. Boyer, Dimitrios Gouliermis, Puragra Guhathakurta, Jason S. Kalirai, Alexia R. Lewis, Anil C. Seth, Evan D. Skillman   +18 more
openaire   +2 more sources

A Value-added COSMOS2020 Catalog of Physical Properties: Constraining Temperature-dependent Initial Mass Function

The Astrophysical Journal Supplement Series, 2023
This work presents and releases a catalog of new photometrically derived physical properties for the ∼10 ^5 most well-measured galaxies in the COSMOS field on the sky.
Vadim Rusakov, Charles L. Steinhardt, Albert Sneppen   +2 more
doaj   +1 more source

Fragmentation and the initial mass function [PDF]

International Astronomical Union Colloquium, 1989
A central problem in the theory of star formation is to understand the spectrum of masses, or Initial Mass Function, with which stars are formed. The fundamental role of the IMF in galactic evolution has been described by Tinsley (1980), and an extensive review of evidence concerning the IMF and its possible variability has been presented by Scalo ...
openaire   +1 more source