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The transient Swift J1727.8-162 is the latest member of the X-ray binary black hole family to be discovered. They are formed by a black hole and a low-mass star whose gas is stripped off and accreted to the black hole via an accretion disc. The high temperature of the accretion disc makes it shine in all energy bands up to X-rays, and is particularly bright during epochs known as outbursts. In this novel study, published just a few months after the discovery of the system, we present 20 epochs of optical spectroscopy obtained with the GTC-10.4m telescope. The spectra cover the main accretionAdvertised on -
The Instituto de Astrofísica de Canarias (IAC) is once again taking part in the Miniferias de la Ciencia y la Innovación en Canarias, an outreach event that aims to bring science and technology closer to students and the general public on the islands. The IAC, through its Scientific Communication and Culture Unit (UC3), will be present at the activities organised in Tenerife and La Palma. Specifically, this Thursday 9 May, students enrolled in the activity "Investigate the Universe with robotic telescopes" will have the opportunity to carry out an astronomical observation through theAdvertised on -
Using observations made with the Gran Telescopio Canarias (GTC) a study led from the Instituto de Astrofísica de Canarias (IAC) and the Universidad Complutense de Madrid (UCM) has confirmed that the asteroid 2023 FW14, discovered last year, is accompanying the red planet in its journey around the Sun, ahead of Mars and in the same orbit. With this new member, the group of Trojans which accompany Mars has increased in number to 17. But it shows differences in its orbit and chemical composition which may indicate that it is a captured asteroid, of a primitive type. The results are published inAdvertised on