Results 21 to 30 of about 261 (139)

Evolution of the ISM in starbursting dwarf galaxies [PDF]

Symposium - International Astronomical Union, 1999
We present a 2D-hydrodynamical simulation of the gas flow generated by a starburst in a dwarf galaxy. We focus in particular on the ejection efficiency both of the ISM and of the metals produced during the burst. It turns out that while the galaxy is able to retain most of the ISM, a significant fraction of the metals is lost, supporting the ...
Fabrizio Brighenti, Annibale D'Ercole
openaire   +1 more source

Out There No One Has a Right to Die

Bioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Questions Should Have Answers

European Journal of Philosophy, EarlyView.
ABSTRACT Making sense of the world often requires one to come up with new ideas, including ideas one had previously been unable to think of. How and when should this be done? I propose and defend a norm of rationality linking wondering, belief, and abilities to conceive: one must not both wonder a question and reject all answers to it that one can ...
Michael Deigan
wiley   +1 more source

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., Bryan, Greg L., Tan, Jonathan C.   +2 more
openaire   +2 more sources

Automation and Augmentation in Theological Perspective

Modern Theology, EarlyView.
Abstract AI enables forms of automation that threaten unemployment and deskilling, eliminating important opportunities for the development of virtue. The concomitant loss of virtue and meaningful employment makes it a theological problem from the perspective of Catholic social teaching and theological anthropology.
Paul Scherz
wiley   +1 more source

Simulations All the Way Up! An Atheist's Response to the Fine‐Tuning Argument

Analytic Philosophy, EarlyView.
ABSTRACT So the Fine‐tuning Argument goes, because it is so unlikely for the physical constants of the laws of nature to have taken the values that they in fact take, we should significantly raise our credence that God exists. Simulation Arguments argue that our world might be (or, in stronger versions, that it probably is) a mere computer simulation ...
Nikk Effingham
wiley   +1 more source

Doomsday or Multiverse Bias

Philosophy and Phenomenological Research, EarlyView.
ABSTRACT Bayesian epistemology faces serious challenges when dealing with self‐locating evidence. This paper argues that, given two modest assumptions about how confirmation should work (Patterning and Live Centers), Bayesianism faces an unavoidable dilemma.
Yoaav Isaacs
wiley   +1 more source

Computers in Our Cosmos: Intersections in Geographies of Care, Abolition Geographies and Worker Movements

Transactions of the Institute of British Geographers, EarlyView.
ABSTRACT AI assistants on spacecrafts. Netflix streamed through inter‐planetary communication networks. Colonies on Mars by 2050. While the glamorous public–private ventures into outer space curate discussions on the technical specificities of these proposed projects, this paper reorients discussions on such developments through critical frameworks of ...
Yung Au
wiley   +1 more source

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

Clumpy galaxies in cosmological simulations: the effect of ISM model [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT We study influence by models of interstellar medium (ISM) on properties of galaxies in cosmological simulations. We examine three models widely used in previous studies. The ISM models impose different equations of state on dense gas.
Shigeki Inoue, Naoki Yoshida
openaire   +2 more sources