Results 51 to 60 of about 274 (137)
Star Formation and the ISM in Dwarf Galaxies
, 2000 High spatial and spectral resolution observations of the atomic interstellar medium in nearby dwarf galaxies reveal evidence for warm and cold neutral gas, just like the phases in our own Galaxy. The cold or quiescent phase (about 20% of the HI in the galaxies studied, except for LGS 3) seems to be associated with star formation activity--- it may mark
Young, L. M. +3 more
openaire +2 more sources
Philosophy and Phenomenological Research, Volume 113, Issue 2, Page 327-345, September 2026.ABSTRACT Philosophers often characterize perception as image‐like. There is little agreement, however, about what constitutes an imagistic or iconic representation. This article identifies five signature properties of iconic representations endorsed in the philosophical and scientific literature: item‐richness, feature‐richness, spatiotemporal ...
Jake Quilty‐Dunn
wiley +1 more source
Risk Analysis, Volume 46, Issue 9, September 2026.ABSTRACT The Fermi paradox may partly reflect technological self‐destruction acting as a Great Filter during post‐industrial development. Because the empirical record consists of a single civilization observed over an eighty‐year nuclear age, the exercise reported here is best understood as a structured, historically anchored scenario analysis rather ...
Vincenzo Alfano
wiley +1 more source
Relations between ISM tracers in galaxies
, 2006 15 pages, 14 figures and 1 ...
Galletta, G. +4 more
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Effects of massive star formation on the ISM of dwarf galaxies [PDF]
New Astronomy Reviews, 2000 We are studying star formation effects on the properties of the ISM in low metallicity environments using mid-infrared (MIR) and far-infrared (FIR) observations of starbursting dwarf galaxies taken with the Infrared Space Observatory (ISO) and the Kuiper Airborne Observatory (KAO).
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Simulating the ISM in Global Disk Galaxies
, 2008 Until recently, simulations that modeled entire galaxies were restricted to an isothermal or fixed 2- or 3-phase interstellar medium (ISM). This obscured the full role of the ISM in shaping the observed galactic-scale star formation relations. In particular the Kennicutt relation suggests that star formation rates depend in a simple way on global ...
Tasker, Elizabeth J. +2 more
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Star formation and the ISM in infrared bright galaxies - SHINING
EAS Publications Series, 2011 The Herschel Key Project SHINING performs a study of the ISM in star forming and active infrared bright galaxies (starbursts, AGN, (U)LIRGs, interacting and low metallicity galaxies) at local and intermediate redshifts. Here we present some surprising and promising first results from parts of this programme, including spatially resolved PDR diagnostics,
Sturm, E. +20 more
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The Neutral Atomic Phases of the ISM in the Galaxy
, 2002 Much of the interstellar medium in disk galaxies is in the form of neutral atomic hydrogen, H I. This gas can be in thermal equilibrium at relatively low temperatures, T < 300 K (the cold neutral medium, or CNM) or at temperatures somewhat less than 10^4 K (the warm neutral medium, or WNM).
Wolfire, M. G. +3 more
openaire +2 more sources
The ISM of Low Surface Brightness Galaxies
, 2000 Using Monte Carlo radiative transfer techniques, we model the dust content of the edge-on low surface brightness (LSB) galaxy UGC 7321 and explore the effects of dust on its disk color gradients. Dust alone cannot explain the large radial disk color gradients observed in this galaxy and we find that a significant fraction (~50%) of the dust in UGC 7321
Matthews, L. D., Wood, Kenneth, Gao, Yu
openaire +2 more sources
The Opacity of Spiral Galaxy Disks. VIII. Structure of the Cold ISM
The Astronomical Journal, 2007 The quantity of dust in a spiral disk can be estimated using the dust's typical emission or the extinction of a known source. In this paper we compare two techniques, one based on emission and one on absorption, applied to sections of 14 disk galaxies. The two measurements reflect, respectively, the average and apparent optical depth of a disk section.
Holwerda, BW +8 more
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