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  • A colour composite image of IC 1101, based on data from the Wide Field Camera (WFC) on the Isaac Newton Telescope (INT)
    Press release
    An IAC study measures the exact size of the largest known galaxy
    How large can a galaxy grow? This is the question behind a new study led by the Instituto de Astrofísica de Canarias (IAC), in which an international team of astronomers has measured, with unprecedented precision, the size of IC 1101, considered the largest known galaxy in the Universe. The study has been published in Astronomy & Astrophysics. The result confirms that this cosmic giant is even larger than previously thought. The main body of IC 1101 reaches a diameter of around 1.7 million light-years, approximately 10 times the size of the Milky Way. If it were placed between our galaxy and
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  • GalIMF
    Research news
    GalIMF–E-MILES library: Impact of an environment-dependent initial mass function on stellar population spectra
    We present, for the first time, model spectra of single-age, single-metallicity stellar populations computed with the E-MILES evolutionary synthesis code incorporating an environment-dependent, variable galaxy-wide initial mass function (gwIMF). This gwIMF, calculated using the GalIMF code, is rooted in the integrated galactic initial mass function (IGIMF) theory, which predicts IMF variations as a function of the star formation rate and the metallicity. By coupling these two codes, we generated a comprehensive library of single-burst stellar population spectra uniquely sensitive to gwIMF
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  • An artistic impression of a nanojet ejection triggered by the interaction of two magnetic flux ropes within a coronal loop in the Sun’s atmosphere.
    Press release
    A new model provides an explanation for the tiny ‘nanojets’ observed on the Sun
    An international team of researchers led by the Instituto de Astrofísica de Canarias (IAC) and the Universidad de La Laguna (ULL), has unveiled a breakthrough explanation for the origin of tiny, jet-like plasma ejections in the solar atmosphere, known as “nanojets.” These elusive events which are recently discovered by the NASA’s solar telescopes are thought to play an important role in heating and sustaining the solar corona at temperatures above one million Kelvin. Why Study Nanojets? For decades, solar physicists have been puzzled by the so-called “coronal heating problem.” While the Sun
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