Results 101 to 110 of about 3,434,376 (288)

The stellar initial mass function at 0.9

Astrophysical Journal Letters, 2014
We explore the stellar initial mass function (IMF) of a sample of 49 massive quiescent galaxies (MQGs) at 0.9$
Martín-Navarro, Ignacio, Pérez-González, Pablo G., Trujillo, Ignacio, Esquej, Pilar, Vazdekis, Alexandre, Domínguez Sánchez, Helena, Barro, Guillermo, Bruzual, Gustavo, Charlot, Stéphane, Cava, Antonio, Ferreras, Ignacio, Espino, Néstor, La Barbera, Francesco, Koekemoer, Anton M., Cenarro, A. Javier   +14 more
openaire   +4 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Mass distributions of stars and cores in young groups and clusters

, 2011
We investigate the relation of the stellar initial mass function (IMF) and the dense core mass function (CMF), using stellar masses and positions in 14 well-studied young groups.
Baraffe, Barrow, Bonnell, Bonnor, Chabrier, Comerón, Ebert, Enoch, Gutermuth, Helen Kirk, Johnstone, Johnstone, Kirk, Kirk, Lada, Larson, Li, Luhman, Luhman, Luhman, Manon Michel, McKee, Motte, Muench, Muñoz, Myers, Natarajan, Offner, Palla, Philip C. Myers, Pineda, Rathborne, Reid, Silverman, Swift, Testi, Tothill, Ward-Thompson, Ward-Thompson, Zinnecker   +39 more
core   +3 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Gauging the Impact of Cosmic-ray Feedback on the Stellar Initial Mass Function

The Astrophysical Journal
Cosmic rays (CRs) drive ionization and influence gas dynamics in molecular clouds (MCs), potentially impacting the resulting star formation outcomes. Although previous simulations of individual star formation have included methods for CR transport (CRT),
Margot Fitz Axen, Stella Offner, Philip F. Hopkins, Michael Y. Grudić   +3 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   +3 more sources

On the function describing the stellar initial mass function [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We propose a functional form for the IMF, the L_3 IMF, which is a natural heavy-tailed approximation to the log-normal distribution. It is composed of a low-mass power law and a high mass power-law which are smoothly joined together. Three parameters are needed to achieve this.
openaire   +2 more sources

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Planet Mass Function around M Stars at 1–10 au: A Plethora of Sub-Earth Mass Objects

The Astrophysical Journal
Small planets (≲1 M _⊕ ) at intermediate orbital distances (∼1 au) represent an uncharted territory in exoplanetary science. The upcoming microlensing survey by the Nancy Grace Roman Space Telescope will be sensitive to objects as light as Ganymede and ...
Yayaati Chachan, Eve J. Lee
doaj   +1 more source

On the Mass Distribution of Stellar-Mass Black Holes

Open Astronomy, 2014
The observational stellar-mass black hole mass distribution exhibits a maximum at about 8 M⊙. It can be explained via the details of the massive star evolution, supernova explosions, or consequent black hole evolution.
Malkov O. Yu.
doaj   +1 more source