Comparing IMF-sensitive indices of intermediate-mass quiescent galaxies in various environments
نویسندگان
چکیده
منابع مشابه
Fifty Years of Imf Variation: the Intermediate-mass Stars
I track the history of star count estimates of the Milky Way field star and open cluster IMFs, concentrating on the neglected mass range from 1 to 15 M⊙. The prevalent belief that the IMF is universal appears to be without basis for this mass range. Two recent estimates of the field star IMF using different methods and samples give values of the average logarithmic slope Γ between -1.7 and -2.1...
متن کاملGraph Sensitive Indices for Comparing Clusterings
This report discusses two new indices for comparing clusterings of a set of points. The motivation for looking at new ways for comparing clusterings stems from the fact that the existing clustering indices are based on set cardinality alone and do not consider the positions of data points. The new indices, namely, the Random Walk index (RWI) and Variation of Information with Neighbors (VIN), ar...
متن کاملComparing models for IMF variation across cosmological time in Milky Way-like galaxies
One of the key observations regarding the stellar initial mass function (IMF) is its nearuniversality in the Milky Way (MW), which provides a powerful way to constrain different star formation models that predict the IMF. However, those models are almost universally ‘cloud-scale’ or smaller – they take as input or simulate single molecular clouds (GMCs), clumps or cores, and predict the resulti...
متن کاملConstraining the IMF in Extreme Environments: Detecting Young Low Mass Stars in Unresolved Starbursts
We demonstrate the feasibility of detecting directly low mass stars in unresolved super–star clusters with ages < 10 Myr using near–infrared spectroscopy at modest resolution (R ∼ 1000). Such measurements could constrain the ratio of high to low mass stars in these extreme star–forming events, providing a direct test on the universal nature of the initial mass function (IMF) compared to the dis...
متن کاملTimescales for Low-Mass Star Formation in Extragalactic Environments: Implications for the Stellar IMF
We investigate the physical and chemical conditions necessary for low-mass star formation in extragalactic environments by calculating various characteristic timescales associated with star formation for a range of initial conditions. The balance of these timescales indicates whether low-mass star formation is enhanced or inhibited under certain physical conditions. In this study, we consider t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2019
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stz1113