Oct 9 – 12, 2018
Royal Observatory of Belgium
UTC timezone
<br>2nd BINA Workshop<br><br>BINA as an expanding international collaboration<P><img src="https://events.oma.be/indico/event/48/picture/0.jpg" width="279" height="75">

DustKING - the story continues: dust attenuation in NGC628

Oct 12, 2018, 3:10 PM
20m
Meridian Room (Royal Observatory of Belgium)

Meridian Room

Royal Observatory of Belgium

Ringlaan 3, 1180 Brussels, Belgium
Contributed Talk 3.3. Data & Science with other telescopes of interest 3. Data & Science with other telescopes of interest

Speaker

Ms Marjorie Decleir (Universiteit Gent)

Description

Dust attenuation is a crucial but highly uncertain parameter that hampers the determination of intrinsic galaxy properties, such as stellar masses, star formation rates and star formation histories. The shape of the dust attenuation law is not expected to be uniform between galaxies, nor within a galaxy. Our DustKING project was introduced at the first BINA workshop in 2016 and studies the variations of dust attenuation curves in nearby galaxies. To this aim, we used the CIGALE code to fit the observed spectral energy distribution. Particularly important for our goal are ultraviolet (UV) data from the SWIFT space telescope, whose filters cover the curious bump feature in the attenuation curve at 2175 Å. As a follow-up of the previous talk, I will present the final results for the spiral galaxy NGC628 (Decleir et al., to be submitted soon). We found that the average attenuation law of this galaxy is characterised by a MW-like bump and a very steep slope. Also, there are some interesting correlations between dust attenuation properties and other galaxy properties. Finally, we showed that UV data are inevitable for our study. Therefore, we would like to use the UVIT from the Indian AstroSat mission in the future. My talk will focus on the possibilities of using this instrument and propose a possible collaboration within the BINA framework.

Primary author

Ms Marjorie Decleir (Universiteit Gent)

Co-authors

Dr Ilse De Looze (Ghent University) Prof. Maarten Baes (Universiteit Gent) Prof. Médéric Boquien (Universidad de Antofagasta)

Presentation materials