Results 131 to 140 of about 3,974,322 (270)

Simulating Brown Dwarf Observations for Various Mass Functions, Birthrates, and Low-mass Cutoffs

The Astrophysical Journal
After decades of brown dwarf discovery and follow-up, we can now infer the functional form of the mass distribution within 20 pc, which serves as a constraint on star formation theory at the lowest masses.
Yadukrishna Raghu, J. Davy Kirkpatrick, Federico Marocco, Christopher R. Gelino, Daniella C. Bardalez Gagliuffi, Jacqueline K. Faherty, Steven D. Schurr, Adam C. Schneider, Aaron M. Meisner, Marc J. Kuchner, Hunter Brooks, Jake Grigorian, The Backyard Worlds: Planet 9 Collaboration   +12 more
doaj   +1 more source

The Initial Mass Function of Stars

, 2006
Observations and theory of the IMF are briefly reviewed. Slight variations have been observed, although they are difficult to prove unambiguously. Most detailed theoretical models reproduce the IMF, but because they use different assumptions and conditions, there is no real convergence of explanations yet.
openaire   +2 more sources

Impact of the initial disk mass function on the disk fraction

, 2015
The disk fraction, the percentage of stars with disks in a young cluster, is widely used to investigate the lifetime of the protoplanetary disk, which can impose an important constraint on the planet formation mechanism.
Ohsawa, Ryou, Onaka, Takashi, Yasui, Chikako   +2 more
core   +1 more source

The Present-day Mass Function of Star Clusters in the Solar Neighborhood

The Astrophysical Journal
This work analyzes the present-day mass function (PDMF) of 93 star clusters utilizing Gaia Data Release 3 data, with membership determined by the StarGo machine-learning algorithm.
Xiaoying Pang, Siqi Liao, Jiadong Li, Zhiqiang Yan, Mingjie Jian, M. B. N. Kouwenhoven, Shih-Yun Tang, Yifan Wang   +7 more
doaj   +1 more source

First Detection of CO Isotopologues in a High-redshift Main-sequence Galaxy: Evidence of a Top-heavy Stellar Initial Mass Function

The Astrophysical Journal
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has been found for starburst conditions, where evidence favors a top-heavy IMF, i.
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan, Eda Gjergo, Allison W. S. Man, R. J. Ivison, Xiaoting Fu, Yong Shi   +7 more
doaj   +1 more source

Star formation: statistical measure of the correlation between the prestellar core mass function and the stellar initial mass function

, 2010
We present a simple statistical analysis of recent numerical simulations exploring the correlation between the core mass function obtained from the fragmentation of a molecular cloud and the stellar mass function which forms from these collapsing cores ...
Dib, Enoch, Evans, Hennebelle, Hennebelle, Johnstone, Johnstone, Matzner, Motte, Offner, Testi, Vorobyov   +11 more
core   +2 more sources

Resolving the Mechanical and Radiative Feedback in J1044+0353 with Keck Cosmic Web Imager Spectral Mapping

The Astrophysical Journal
We present integral field spectroscopy toward and around J1044+0353, a rapidly growing, low-metallicity galaxy that produces extreme [O iii ] line emission.
Crystal L. Martin, Zixuan Peng, Yuan Li
doaj   +1 more source

The Dynamical Evolution of Expanding HI Shells and Initial Mass Function of OB Associations [PDF]

, 1986
Sergiy Silich
openalex   +1 more source

Investigations of Massive Filaments and Star Formation (INFANT). I. Core Identification and Core Mass Function

The Astrophysical Journal
Filamentary structures are ubiquitously found in high-mass star-forming clouds. To investigate the relationship between filaments and star formation, we carry out the INFANT (Investigations of Massive Filaments and Sar Formation) survey, a multiscale ...
Yu Cheng, Xing Lu, Patricio Sanhueza, Hauyu Baobab Liu, Qizhou Zhang, Roberto Galván-Madrid, Ke Wang, Fumitaka Nakamura, Tie Liu, Siyi Feng, Shanghuo Li, Sihan Jiao, Kei E. I. Tanaka, Xunchuan Liu, Pak Shing Li, Qiuyi Luo, Qilao Gu, Yuxin Lin, Andrés E. Guzmán   +18 more
doaj   +1 more source

The Stellar Initial Mass Function in The Galactic Center [PDF]

, 2007
Massive stars define the upper limits of the star formation process, dominate the energetics of their local environs, and significantly affect the chemical evolution of galaxies. Their role in starburst galaxies and the early Universe is likely to be important, but we still do not know the maximum mass that a star can possess, i.e.``the upper mass ...
openaire   +3 more sources