Results 11 to 20 of about 716,854 (348)

Stellar coronal mass ejections

open access: yesSerbian Astronomical Journal, 2022
Stellar coronal mass ejections (CMEs) are a growing research field, especially during the past decade. The large number of so far detected exoplanets raises the open question for the CME activity of stars, as CMEs may strongly affect exoplanetary atmospheres.
Leitzinger M., Odert P.
openaire   +3 more sources

Supernova host galaxies in the dark energy survey: I. Deep coadds, photometry, and stellar masses [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
The 5-yr Dark Energy Survey Supernova Programme (DES-SN) is one of the largest and deepest transient surveys to date in terms of volume and number of supernovae.
P. Wiseman   +77 more
semanticscholar   +1 more source

Dynamical Stellar Masses of Pre-main-sequence Stars in Lupus and Taurus Obtained with ALMA Surveys in Comparison with Stellar Evolutionary Models [PDF]

open access: yes, 2020
We analyzed archival molecular line data of pre-main-sequence (PMS) stars in the Lupus and Taurus star-forming regions obtained with ALMA surveys with an integration time of a few minutes per source. We stacked the data of 13CO and C18O (J = 2–1 and 3–2)
T. Braun   +5 more
semanticscholar   +1 more source

Consistent Dynamical and Stellar Masses with Potential Light IMF in Massive Quiescent Galaxies at 3 < z < 4 Using Velocity Dispersions Measurements with MOSFIRE [PDF]

open access: yes, 2020
We present the velocity dispersion measurements of four massive ∼1011M⊙ quiescent galaxies at 3.2 < z < 3.7 based on deep H and K-band spectra using the Keck/MOSFIRE near-infrared spectrograph.
J. Esdaile   +11 more
semanticscholar   +1 more source

The CANDELS/SHARDS Multiwavelength Catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission-line Fluxes, and Star Formation Rates [PDF]

open access: yesAstrophysical Journal Supplement Series, 2019
We present a WFC3 F160W (H-band) selected catalog in the CANDELS/GOODS-N field containing photometry from the ultraviolet (UV) to the far-infrared (IR), photometric redshifts, and stellar parameters derived from the analysis of the multiwavelength data ...
G. Barro   +54 more
semanticscholar   +1 more source

Stellar masses and star formation histories for 105 galaxies from the Sloan Digital Sky Survey [PDF]

open access: yes, 2002
We develop a new method to constrain the star formation histories, dust attenuation and stellar masses of galaxies. It is based on two stellar absorption-line indices, the 4000-A break strength and the Balmer absorption-line index Hδ A .
G. Kauffmann   +21 more
semanticscholar   +1 more source

Stellar mass ejections [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
AbstractIt has been known for some time now that rapidly-rotating solar-like stars possess the stellar equivalent of solar prominences. These may be three orders of magnitude more massive than their solar counterparts, and their ejection from the star may form a significant contribution to the loss of angular momentum and mass in the stellar wind.
Jardine, Moira   +2 more
openaire   +3 more sources

No Tension: JWST Galaxies at $z > 10$ Consistent with Cosmological Simulations

open access: yesThe Open Journal of Astrophysics, 2023
Recent observations by JWST have uncovered galaxies in the very early Universe via the JADES and CEERS surveys. These galaxies have been measured to have very high stellar masses with substantial star formation rates.
Joe McCaffrey   +3 more
doaj   +1 more source

Measuring Stellar and Black Hole Masses of Tidal Disruption Events [PDF]

open access: yesAstrophysical Journal, 2020
The flare produced when a star is tidally disrupted by a supermassive black hole holds potential as a diagnostic of both the black hole mass and the star mass.
Taeho Ryu, J. Krolik, T. Piran
semanticscholar   +1 more source

A Redshift-independent Efficiency Model: Star Formation and Stellar Masses in Dark Matter Halos at z ≳ 4 [PDF]

open access: yesAstrophysical Journal, 2018
We explore the connection between the UV luminosity functions (LFs) of high-z galaxies and the distribution of stellar masses and star formation histories (SFHs) in their host dark matter halos.
S. Tacchella   +4 more
semanticscholar   +1 more source

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