Results 21 to 30 of about 993,735 (252)

The Origin of Star Formation in Early-type Galaxies Inferred from Spatially Resolved Spectroscopy

open access: yesThe Astrophysical Journal, 2023
We investigate the origin of star formation activity in early-type galaxies with current star formation using spatially resolved spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory in the Sloan Digital Sky Survey (SDSS).
Yun Hee Lee   +4 more
doaj   +1 more source

The Effect of f(R, T) Modified Gravity on the Mass and Radius of Pulsar HerX1

open access: yesThe Astrophysical Journal, 2023
Millisecond pulsars are the perfect testable to examine potential matter-geometry coupling and its physical consequences in the context of the recent Neutron Star Interior Composition Explorer discoveries. We apply the field equations of modified gravity,
G. G. L. Nashed
doaj   +1 more source

Monolithic or hierarchical star formation? A new statistical analysis [PDF]

open access: yes, 1998
We consider an analytic model of cosmic star formation which incorporates supernova feedback, gas accretion and enriched outflows, reproducing the history of cosmic star formation, metallicity, supernovae type II rates and the fraction of baryons ...
Kampakoglou, Marios   +2 more
core   +1 more source

Complex Organic Molecules in a Very Young Hot Corino, HOPS 373SW

open access: yesThe Astrophysical Journal, 2023
We present the spectra of complex organic molecules (COMs) detected in HOPS 373SW with the Atacama Large Millimeter/submillimeter Array (ALMA). HOPS 373SW, which is a component of a protostellar binary with a separation of 1500au, has been discovered as ...
Jeong-Eun Lee   +8 more
doaj   +1 more source

Radio Triggered Star Formation in Cooling Flows

open access: yes, 1999
The giant galaxies located at the centers of cluster cooling flows are frequently sites of vigorous star formation. In some instances, star formation appears to have been triggered by the galaxy's radio source.
Allen   +34 more
core   +2 more sources

Extreme Star Formation

open access: yes, 2009
Extreme star formation includes star formation in starbursts and regions forming super star clusters. We survey the current problems in our understanding of the star formation process in starbursts and super star clusters - initial mass functions ...
Turner, Jean L.
core   +2 more sources

The Star Formation Law in Molecule-Poor Galaxies [PDF]

open access: yes, 2013
In this paper, I investigate the processes that regulate the rate of star formation in regions of galaxies where the neutral interstellar medium is predominantly composed of non-star-forming HI.
Krumholz, Mark R.
core   +1 more source

Interior dynamics of envelopes around disk-embedded planets

open access: yesAstronomy & Astrophysics
In the core accretion scenario, forming planets start to acquire gaseous envelopes while accreting solids. Conventional 1D models assume envelopes to be static and isolated.
Kuwahara Ayumu, Lambrechts Michiel
doaj   +1 more source

The Effect of Local Galaxy Surface Density on Star Formation for HI selected galaxies [PDF]

open access: yes, 2006
We present the result of investigations into two theories to explain the star formation rate-density relationship. For regions of high galaxy density, either there are fewer star forming galaxies, or galaxies capable of forming stars are present but some
Doyle, Marianne T.   +1 more
core   +3 more sources

Interstellar ices as carriers of supernova material to the early solar system

open access: yesNature Communications
Planetary materials show systematic variations in their nucleosynthetic isotope compositions that resonate with orbital distance. The origin of this pattern remains debated, limiting how these isotopic signatures can be used to trace the precursors of ...
Martin Bizzarro   +12 more
doaj   +1 more source

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