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Day 2 of this very busy week. Unfortunately #Pint19AU & #A3Dscimeet19 colliding the same days and work/life balance made me arrive late for #A3Dscimeet19 1st session about the ASKAP. Kid school starts at 9:20am 45 min away from here. Mum will pick him up from aftercare at 6pm
Otherwise mum would have changed her working hours to start later, she would have taken him to school while I would have been prompt at 9am for #A3Dscimeet19, and I would have picked him up from aftercare at 6pm...
At least I arrived just on time to listen summary slide by Tristan Reynolds @ICRAR showing some great @WALLABYsurvey Early Science HI Spectral Line Observations, finding new dwarf galaxies in a galaxy group & high dark matter fractions #A3Dscimeet19 
Next it is Bi-Qing For @ICRAR showing some early science results for the LGG 351 galaxy group and NGC 1566 #A3Dscimeet19
Bi-Qing For @ICRAR explains they use SoFiA (Source Finder Application, Serra et al 2015) for identifying sources in @WALLABYsurvey, some nice results shown including tidal interactions. ASKAP data allows to resolve HI gas. And multi wavelength analysis helps too! #A3Dscimeet19
Now is @ICRAR PhD student Adam Watts talking about statiscally quantifying neutral gas (HI) profile asymmetries using the xGASS survey. He uses integrated spectra analysed by “the busy function” looking for asymmetries #A3Dscimeet19
Adam Watts @ICRAR argues his study is driven by the needs of the next generation surveys with 0.5 million global spectra expected. What is the connection between HI symmetry and asymmetric galaxies? Gas fraction is an important parameter #A3Dscimeet19
Following his analysis, Adam Watts @ICRAR suggests that asymmetric galaxies are undergoing a process which removes and disturbs the gas, meaning we can use HI profiles to investigate this! Conclusion slide also included #A3Dscimeet19
After the coffee break, #A3Dscimeet19 resumes with Nic Scott @Sydney_Science talking about SAMI (the AAT instrument) and @SAMI_survey (the galaxy survey) and the path to Hector (the new AAT instrument & the new galaxy survey)
Nic Scott @Sydney_Science summarises main @SAMI_survey milestones in the last year, including completing observations in May 2018, 19 papers published/submitted and even an educational tool developed! #A3Dscimeet19
Nic Scott @Sydney_Science shows more @SAMI_survey science highlights, as stellar/gas misalignments to explore gas origin en galaxies. He also remarks collaborations with other surveys/projects including with @galahsurvey #A3Dscimeet19
But the next big thing is Hector, that Nic Scott describes as @SAMI_survey +3 (better spectra, larger fibre bundles, more galaxies!). Instrument under construction at AAO-@Sydney_Science & @AAOMacquarie with @scienceANU AAT. Survey and project updates included #A3Dscimeet19
Now @scienceANU & @Sydney_Science PhD student Tania Barone presents her work about dynamical drivers of galaxy stellar populations, trying to find correlations between stellar populations & galaxy structural parameters #A3Dscimeet19
Interesting observational trends discussed by Tania Barone @scienceANU @Sydney_Science finding that ages of stellar populations correlate best with galaxy surface density and their metallicities correlate best with gravitational potential. Explanations included #A3Dscimeet19
Next Luca Cortese @ICRAR uses @SAMI_survey data to study how galaxies are transformed in groups. We’re seeing galaxy transformation in action there, and we know environment plays a key role #A3Dscimeet19
Great comment by Luca Cortese @ICRAR “we should focus on the physical properties of galaxies, otherwise we’ll be ‘lost in translation’ and ‘discover’ new/rare galaxy types”. Have a look to these “invented” animals! #A3Dscimeet19
Luca Cortese @ICRAR tries to find a physical framework for galaxy transformation, needing to discriminate between central and satellite galaxies. @SAMI_survey data in the GAMA regions to help! #A3Dscimeet19
Luca Cortese @ICRAR studies the transformation of satellite galaxies, found that an initial assumption is wrong. Compared with simulations & sketch evolution proposed: transformation is in star-formation activity but very little (or no) in structure #A3Dscimeet19
Luca Cortese @ICRAR summary slides: (1) Beware of progenitor bias! and (2) satellite galaxies in groups first get old and then (sometimes) get thicker. 3D IFU data fundamental to answer this, but we need more data! #A3Dscimeet19
Next is Sree Oh @scienceANU studying kinematics of galactic bulges and disks using @SAMI_survey data. The first big problem: how to do a proper kinematic bulge/disk decomposition #A3Dscimeet19
Sree Oh @scienceANU discusses how to try to solve the problem using chi-square maps, examples of kinematic maps (she got 1616 @SAMI_survey galaxies) & analysis of bulge/disk (B/T) ratio #A3Dscimeet19
Last talk in #A3Dscimeet19 before lunch is @calofost @Sydney_Science, @ARC_ASTRO3D fellow. She’s presenting the work done by summer student Alexander Rawlings, now in a paper, seeking to understand behaviour of spin-ellipticity radial tracks in galaxies using @SAMI_survey data
Summary slide after @calofost @Sydney_Science @ARC_ASTRO3D nice talk and discussion: the shape of the spin-ellipticity tracks depends on their morphological and dynamical structure #A3Dscimeet19
After lunch, first speaker at #A3Dscimeet19 is PhD student Henry Poetrodjojo @scienceANU talking about reconciling metallicity diagnostics using @SAMI_survey data. Great to finally seeing gas-phase metallicity in the meeting!
Henry Poetrodjojo @scienceANU nicely summarises the problem with strong emission line diagnostics & how different results they provide, e.g. Mass-Metallicity relation #A3Dscimeet19
Henry Poetrodjojo @scienceANU uses @SAMI_survey data to try to get a better relation between different metallicity diagnostics using metallicity gradients #A3Dscimeet19
Henry Poetrodjojo @scienceANU take home message and summary of his #A3Dscimeet19 talk. My extra point: be very careful when using metallicity empirical calibrations!
Now @Sydney_Science PhD student Mathew Varidel talks about recovering intrinsic gas kinematics using the code “BLOBBY3D”. Also using @SAMI_survey data for that! #A3Dscimeet19
Mathew Varidel @Sydney_Science: comparison single component fits vs Blobby3D velocity dispersion for 20 @SAMI_survey star-forming galaxies, evident differences appear #A3Dscimeet19
Mathew Varidel @Sydney_Science also studies the relation between turbulent gas and star formation, finding a positive correlation between SFR (star-formation rate) and velocity dispersion. Summary slide also included. #A3Dscimeet19
Next talk is a “double act” by @BekyBrown & Adeline Wang @Sydney_Science @AAOorg talking about the Hector instrument: current status. From @SAMI_survey to the need of multiple positionable IFUs #A3Dscimeet19
Differences between SAMI & Hector hexabundles and how important it is to increase the filling factor. The 169-core bundle is tiny, see comparison with a 10 AU cents coin! Also how hexabundles are optimised #A3Dscimeet19
Also @BekyBrown quickly summarises the Hector positioner and the new spectrograph, which will provide the highest spectral resolution of all current IFS surveys. #A3Dscimeet19
Next talk is given by... yours truly! I’m presenting our Hi-KIDS survey: the HI KOALA IFS dwarf galaxy survey using the Anglo-Australian Telescope Thanks @ARC_ASTRO3D @ktgrasha @astro_stephi for the photos! #A3Dscimeet19 @MQPhysAstro @MQSciEng @AAOMacquarie
Now @astro_stephi talks about “First Galaxies”, that is, high-redshift galaxies, as part of the Brightest of Reionising Galaxies (BoRG) survey. Science expected included #A3Dscimeet19
There plenty of issues to take into account, for example avoiding contamination from objects that are not high redshift galaxies. WFC3 medium band data comes to help! @astro_stephi in #A3Dscimeet19
The other problem is that @NASAHubble filters can only go to blue near-infrared, high-z galaxies are only seen in 1-2 filters. With JWST it will be possible to get to z 10-15 as reaching mid-IR, and even do spectroscopy. @astro_stephi summary slide also included #A3Dscimeet19
After afternoon coffee break Keven Ren @unimelb talks about the brightest galaxies at cosmic dawn. He discusses difficulties of deriving galaxy luminosities at high redshifts #A3Dscimeet19
Keven Ren @unimelb concludes that stochasticity plays a significant role in shaping the bright end of the galaxy luminosity function. Future WFIRST surveys could be used to constrain the physics behind star formation processes in the early Universe #A3Dscimeet19
Next Simon Mutch @unimelb talks about the Genesis SAMS and science capabilities (SAMS stands for “semi-analytics models”, in comparison to hydrodynamical simulations) #A3Dscimeet19
Simon Mutch @unimelb talks about MERAXES, SHARK (lead by @CDPLagos in @ICRAR ), TAO (Theoretical Astrophysical Observatory, lead by @darrencroton ) and Dark Sage (lead by Adam Stevens) as models that would provide key @ARC_ASTRO3D science #A3Dscimeet19
Next a very short presentation summarising the best of the 2019 @ARC_ASTRO3D Student Retreat last weekend. Students got tips about communication, collaborations, networking (this one by @CDPLagos ) and more! #A3Dscimeet19 ... They didn’t organise these when I was a PhD student!
Next in #A3Dscimeet19 is not a science talk but an update about Equity, Diversity & Inclusion in @ARC_ASTRO3D given by Kim-Vy Tran @UNSWScience
Next @JossBlandHawtho @Sydney_Science gives an update of the National and International Partner Engagement in @ARC_ASTRO3D #A3Dscimeet19
Today’s #A3Dscimeet19 last talk is by @tash_does_space @Sydney_Science who provides an Outreach and Education Update n @ARC_ASTRO3D
In #A3Dscimeet19 @tash_does_space is summarising what @ARC_ASTRO3D Outreach and Education team needs from us (researchers). Well, count on me! (in any case I’ve doing #scicomm #outreach & giving talks in school since I moved to Australia 12 years ago...)
And after a long day with the #A3Dscimeet19 Tuesday continues MC-ing #pint19AU #PintAU19 with @AstroKirsten as @theskyentists
First talk at #PintAU19 #Pint19AU Botany View Hotel in Newtown, Sydney is Dr Yuval Sanders @MQPhysAstro @MQSciEng @Macquarie_Uni talking about Quantum Computers!
Yuval Sanders asks “What is a computer”, and he ganswers “A device that computes” #PintAU19
“Typical reactions after explaining how a computer works... it is better don’t do it again. Never. Ever. A machine can do it for you.” Yuval Sanders @MQSciEng @MQPhysAstro @Macquarie_Uni in #pint19AU #PintAU19
“I’m trying to summarise the basics of Quantum Physics in this slide”, Yuval Sanders @MQSciEng @MQPhysAstro in #PintAU19 #Pint19AU
I have to say that @AstroKirsten is taking very seriously her MC role in #pint19AU #PintAU19 @pintofscienceAU
After a short break it is time for the quiz... and selfy at #pint19AU #PintAU19 Botany View Hotel at Newtown, Sydney! Photo taken by @AstroKirsten @theskyentists
Second speaker for the night (and winner of the heads & tails quiz!) is PhD candidate Christian Marciniak @Sydney_Science talking about Quantum Computing #pint19AU #PintAU19
Next it is time to tell why do we need quantum simulators... Christian Marciniak @Sydney_Science in #PintAU19 #Pint19AU at Botany View Hotel, Newtown, Sydney
And all done for the night! Another selfy with the organisers of #pint19AU #PintAU19 at Botany View Hotel, Newtown, Sydney, for another successful @pintofscienceAU event!!
Let’s do the magic... @threadreaderapp unroll please!
