Results 1 to 10 of about 4,114,637 (395)

LATIS: The Stellar Mass–Metallicity Relation of Star-forming Galaxies at z ∼ 2.5

open access: yesThe Astrophysical Journal, 2023
We present the stellar mass–stellar metallicity relation for 3491 star-forming galaxies at 2 ≲ z ≲ 3 using rest-frame far-ultraviolet spectra from the Ly α Tomography IMACS Survey (LATIS).
Nima Chartab   +4 more
doaj   +1 more source

Revisiting the Planet Mass and Stellar Metallicity Relation for Low-Mass Exoplanets Orbiting GKM Class Stars

open access: yesUniverse, 2021
The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang   +4 more
doaj   +1 more source

The Chocolate Chip Cookie Model: Dust-to-metal Ratio of H ii Regions

open access: yesThe Astrophysical Journal Letters, 2023
Using a sample of face-on star-forming galaxies selected from the Sloan Digital Sky Survey, we statistically derive the typical optical depth τ _cl of individual H ii regions based on the “Chocolate Chip Cookie” model of Lu et al. (2022).
Jiafeng Lu   +3 more
doaj   +1 more source

Detection of a High-velocity Prominence Eruption Leading to a CME Associated with a Superflare on the RS CVn-type Star V1355 Orionis

open access: yesThe Astrophysical Journal, 2023
Stellar coronal mass ejections (CMEs) have recently received much attention for their impacts on exoplanets and stellar evolution. Detecting prominence eruptions, the initial phase of CMEs, as the blueshifted excess component of Balmer lines is a ...
Shun Inoue   +7 more
doaj   +1 more source

Wide binary stars with non-coeval components

open access: yesOpen Astronomy, 2022
We have the estimated masses of components of visual binaries from their spectral classification. We have selected pairs in which the less massive component looks more evolved. Spectral observations of some of these pairs were made, and at least one pair,
Malkov Oleg, Kniazev Alexey
doaj   +1 more source

First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies [PDF]

open access: yes, 2017
The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
A. Pillepich   +10 more
semanticscholar   +1 more source

A New Census of the 0.2 < z < 3.0 Universe. I. The Stellar Mass Function [PDF]

open access: yesAstrophysical Journal, 2019
There has been a long-standing factor-of-two tension between the observed star formation rate density and the observed stellar mass buildup after z ∼ 2.
J. Leja   +5 more
semanticscholar   +1 more source

No Significant Evolution of Relations between Black Hole Mass and Galaxy Total Stellar Mass Up to z ∼ 2.5 [PDF]

open access: yesAstrophysical Journal, 2019
We investigate the cosmic evolution of the ratio between black hole (BH) mass (MBH) and host galaxy total stellar mass (Mstellar) out to z ∼ 2.5 for a sample of 100 X-ray-selected moderate-luminosity, broad-line active galactic nuclei (AGNs) in the ...
H. Suh   +6 more
semanticscholar   +1 more source

The Optical and Near-Infrared Properties of Galaxies. I. Luminosity and Stellar Mass Functions [PDF]

open access: yes, 2003
We use a large sample of galaxies from the Two Micron All Sky Survey (2MASS) and the Sloan Digital Sky Survey (SDSS) to calculate galaxy luminosity and stellar mass functions in the local universe. We estimate corrections for passband shifting and galaxy
E. Bell   +3 more
semanticscholar   +1 more source

The 6dF Galaxy Survey: Dependence of halo occupation on stellar mass [PDF]

open access: yes, 2012
In this paper we study the stellar-mass dependence of galaxy clustering in the 6dF Galaxy Survey. The near-infrared selection of 6dFGS allows more reliable stellar mass estimates compared to optical bands used in other galaxy surveys.
Beutler, Florian   +8 more
core   +1 more source

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