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Irma Fuentes-Morales

Publications and source records attributed to Irma Fuentes-Morales.

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Analyzing New Planetary Systems at School: Applications of Newton's Law of Universal Gravitation and Kepler's Third Law

As scientific knowledge expands, science education may not always keep pace with the latest advancements in astrophysics. A solid scientific education is crucial for preparing students for 21st-century challenges. However, science education often focuses narrowly on specific content, neglecting frontier scientific research. To address this, a teaching sequence was developed in Chile using real exoplanet data from the Open Exoplanet Catalog and NASA's Eye on Exoplanets webpage. This integrates cutting-edge astrophysical concepts into classroom discussions. Analyzing this data prompts students to discuss how Newton's law of universal gravitation and Kepler's third law apply to current research on extrasolar systems. This sequence deepens understanding of these principles within modern astrophysics, enriching science education. Such activities spark new research questions akin to those debated in scientific circles, enhancing insights into planetary formation.

physics.ed-ph

Nova Scorpius 1437 A.D. is now a dwarf nova, age-dated by its proper motion

Here we report the recovery of the binary underlying the classical nova of 11 March 1437 A.D. whose age is independently confirmed by proper motion-dating, and show that in the 20th century it exhibits dwarf nova eruptions. The four oldest recovered classical novae are now all dwarf novae. Taken together they strongly suggest that mass transfer rates decrease by an order of magnitude or more in the centuries after a classical nova event, greatly slowing the evolution, and lengthening the lifetimes of these explosive binary stars.

astro-ph.SR