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On the Origin of the Initial Mass Function

Paladini, Roberta and Povich, Matthew and Armus, Lee and Battersby, Cara and Elmegreen, Bruce and Ginsburg, Adam and Johnstone, Doug and Leisawitz, David and McGehee, Peregrine and Sadavoy, Sarah and Sewilo, Marta and Traficante, Alessio and Wiedner, Martina (2019) On the Origin of the Initial Mass Function. Astro2020 Science White Paper, . (Unpublished)

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It is usually assumed that the stellar initial mass function (IMF) takes a universal form and that there exists a direct mapping between this and the distribution of natal core masses (the core mass function, CMF). The IMF and CMF have been best characterized in the Solar neighborhood. Beyond 500~pc from the Sun, in diverse environments where metallicity varies and massive star feedback may dominate, the IMF has been measured only incompletely and imprecisely, while the CMF has hardly been measured at all. In order to establish if the IMF and CMF are indeed universal and related to each other, it is necessary to: 1) perform multi-wavelength large-scale imaging and spectroscopic surveys of different environments across the Galaxy; 2) require an angular resolution of < 0.1'' in the optical/near-IR for stars and < 5'' in the far-IR for cores; 3) achieve far-IR sensitivities to probe 0.1~Msol cores at 2-3 kpc.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Paladini, Roberta0000-0002-5158-243X
Povich, Matthew0000-0001-9062-3583
Armus, Lee0000-0003-3498-2973
Battersby, Cara0000-0002-6073-9320
Elmegreen, Bruce0000-0002-1723-6330
Ginsburg, Adam0000-0001-6431-9633
Johnstone, Doug0000-0002-6773-459X
McGehee, Peregrine0000-0003-0948-6716
Sadavoy, Sarah0000-0001-7474-6874
Sewilo, Marta0000-0003-2248-6032
Traficante, Alessio0000-0003-1665-6402
Wiedner, Martina0000-0003-3912-7095
Group:Infrared Processing and Analysis Center (IPAC)
Series Name:Astro2020 Science White Paper
Record Number:CaltechAUTHORS:20191121-111336659
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99986
Deposited By: Tony Diaz
Deposited On:21 Nov 2019 19:33
Last Modified:30 Jan 2021 01:00

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