Dr. Pamela Klaassen
Royal Observatory Edinburgh, UK
Carina’s Pillars of Destruction, the view from ALMA and Beyond
Abstract : Massive stars cause strong feedback onto their natal environment, and shape its future ability to make further stars. They inject enormous amounts of energy and turbulence into their surroundings, and create or reveal dense pillars of gas and dust towards the edges of the cavities they clear. The shapes of these pillars are well reproduced in many different kinds of feedback models, but their internal structures vary significantly (and measurably) from model to model. The distinguishing properties include differences in internal velocity gradients, pillar velocity offsets with respect to the cloud rims they are attached to, and their internal velocity dispersions. These pillar properties are testable with observations of the molecular gas within such pillars. Here I will present the first ALMA survey focusing on the internal dynamics of 13 pillars which are being shaped by the high-mass stars in the Carina nebula. I will present our 12CO/13CO/C18O and 1.3 mm continuum observations in the these pillars which show beautiful and varied kinematic properties which are more reminiscent of the structures formed in simulations, and describe how these findings can be used to inform followup studies with future facilities.
Leave a Comment
Last Updated: 6th January 2020 by Simon Purser
2020-01-22, 16:00: Dr. P. Klaassen (Royal Observatory Edinburgh)
Dr. Pamela Klaassen
Royal Observatory Edinburgh, UK
Carina’s Pillars of Destruction, the view from ALMA and Beyond
Abstract : Massive stars cause strong feedback onto their natal environment, and shape its future ability to make further stars. They inject enormous amounts of energy and turbulence into their surroundings, and create or reveal dense pillars of gas and dust towards the edges of the cavities they clear. The shapes of these pillars are well reproduced in many different kinds of feedback models, but their internal structures vary significantly (and measurably) from model to model. The distinguishing properties include differences in internal velocity gradients, pillar velocity offsets with respect to the cloud rims they are attached to, and their internal velocity dispersions. These pillar properties are testable with observations of the molecular gas within such pillars. Here I will present the first ALMA survey focusing on the internal dynamics of 13 pillars which are being shaped by the high-mass stars in the Carina nebula. I will present our 12CO/13CO/C18O and 1.3 mm continuum observations in the these pillars which show beautiful and varied kinematic properties which are more reminiscent of the structures formed in simulations, and describe how these findings can be used to inform followup studies with future facilities.
Category: Future Seminars, Seminars
DYK: @dias_geophysics was at @BTYSTE in the @TheRDS in early Jan twitter.com/dias_geophysic…
#OTD in 2019 @mitchelloconnor unveiled a portrait of Dr Sheila Tinney here at DIAS. Dr Tinney was appointed the first ever female fellow at DIAS and later became a Research Associate at the Institute’s School of Theoretical Physics. Today also marks her birthday 🎂 #DIASdiscovers
Busy start to the week: An international team led by scientists from DIAS has discovered that large portions of the tectonic plate, or lithosphere, beneath Africa have disappeared over the past 200 million years More ➡️ dias.ie/2020/01/13/dia… @dias_geophysics #DIASdiscovers
An interesting story that includes one of the first ever DIAS staff members. #DIASdiscovers twitter.com/IrishTimesBook…
This week we took a look back at DIAS' significant achievements over the decade from 2010 to 2019. Learn More ➡️ dias.ie/2020/01/09/dia… #DIASdiscovers
DIAS is looking for an exceptional Senior Executive Officer to look after their Strategy Implementation and Impact. Interested? Learn More at dias.ie/2020/01/08/vac… Closes 31 January #DIASdiscovers #jobfairy
ICYMI: DIAS was awarded one of the first SALI Professorships in Physics on the 03 January. It is anticipated that recruitment for this position will begin in late Spring 2020. More ➡️ dias.ie/2020/01/06/dia… #DIASdiscovers #SALI #physics #jobfairy #gender #Balance
In 2017 Dr Eamon O'Gorman (then astronomer at the Dublin Institute for Advanced Studies) led an international team to create the image of Betelgeuse. Now one of the brightest stars in the sky has been dimming: dias.ie/betelgeusedims #DIASdiscovers #ALMA #telescope
Last day to apply for the Schrödinger Fellowship with the School of Theoretical Physics More: dias.ie/positions/inde… #jobfairy #DIASdiscovers #physics #theoretical