5 papers
HD 152384: A 5 Myr old debris disk system showing a gaseous ring of refractory elements at the dust sublimation radius
Mario van den Ancker, Daniela Iglesias, Olja Panić +2
Context: Circumstellar gas around young stars provides key insights into planet formation and disk evolution. HD 152384, a young (5 Myr) A0 V star in Sco-Cen, shows hybrid-disk tra…
A search for circumstellar gas in pre-main-sequence debris discs using absorption spectroscopy
Karolina M. Szewczyk, Daniela P. Iglesias, Olja Panić
Gas in debris discs is thought to be either inherited from the protoplanetary stage or released from the solid, rocky content of planetesimal belts. Its presence can impact planeta…
Observations of Exocomets
Judith Korth, Azib Norazman, Raphäel Bendahan-West +6
Active small bodies in extrasolar systems, the extrasolar analogues of Solar System comets, provide insights into the orbital evolution and physical processes shaping planetary sys…
HD 44892: The youngest (or oldest?) gas-harbouring debris disc around an intermediate mass star
Karolina M. Szewczyk, Olja Panić, Daniela P. Iglesias +2
We present the first detections of gas around a 2.1 Myr old debris disc-bearing intermediate-mass star, HD 44892. Gas is detected both in CO (2-1) emission through ALMA Band…
Gas absorption towards the eta Tel debris disc: winds or clouds?
Daniela P. Iglesias, Olja Panić, Isabel Rebollido
eta Telescopii is a ~23 Myr old A-type star surrounded by an edge-on debris disc hypothesised to harbour gas. Recent analysis of far- and near-ultraviolet spectroscopic observation…