2nd SELGIFS Advanced School on Integral-Field Spectroscopic Data Analysis

Monday, 21 November

09:30 - 10:00 Registration and welcome
10:00 - 10:30 Round table: Scientific context
10:30 - 11:00 Contiguous star-forming features in the outskirts of early-type galaxies
Jean Michel Gomes (IA-CAUP)
Abstract: Recently, a combined photometric and IFS study by Gomes et al. (2016, A&A 585, 92) has revealed extremely faint spiral-arm-like or contiguous star-forming features in the periphery of three nearby early-type galaxies from the CALIFA survey. This project aims at an extension of the study with two further galaxies in CALIFA DR3. Our main goal is to investigate the properties of the stellar component and the nebular emission-line ratios to test whether enhanced nebular emission is powered by photoionization by young OB stars. Additionally, the population synthesis tool RemoveYoung (Gomes & Papaderos 2016; see presentation on Wednesday) will be applied to bi-dimensional spectra of these star-forming features with the goal of studying their recent spectrophotometric evolution and mean star formation rate.
11:00 - 11:30 Turning "ageing" inside-out
Javier Casado (AIP)
Abstract: Galaxies evolve smoothly as they form new stars from their gas reservoir. A clear signature of this process is the so-called "ageing sequence", a tight relation in the color-EW(Ha) plane. However, there seems to be plenty variety in this diagram, depending on several (local and global) physical properties, and the spatial resolution and signal-to-noise of the data play an important role in understanding how galaxies "age" on resolved scales. Here we will study the color-EW diagram using as many galaxies as possible, different IFS samples, diferent proxies of the SSFR, and different prescriptions to bin the data prior to its analysis.
11:30 - 12:00 Coffee break
12:00 - 12:30 Probing the nature of the diffuse ionized gas wit IFS
F. Fabián Rosales (INAOE)
Abstract: The goal is to try to quantify the fraction of diffuse gas with respect to the total Halpha emission in a given galaxy. Previous attempts to do so were based either on narrow band imaging or using spectroscopic methods in small field-of-views and/or with low spatial resolution. New IFTS observations allow to sample a good range of the HII region luminosity function, and potentially, to quantify the escape fraction of ionizing radiation in sample of local star forming galaxies. This have important connotations for higher redshift objects, as we could quantify how much of the Halpha emission in a galaxy is actually related to star formation, and which fraction should not be considered for determinations of SFR when the galaxies cannot be spatially resolved.
12:30 - 13:00 Study of potential systematic effects on the derivation of gas kinematic parameters
Enrica Bellocchi (UAM)
Abstract: We will compare several methods nowadays used to derive the pure gas kinematics, focusing on the differences arising from the way the stellar continuum is subtracted as well as the presence of non-Gaussian line profiles and/or multiple kinematic components.
13:00 - 13:30 Modelling the nebular continuum
Yago Ascasibar (UAM)
Abstract: The optical spectrum of a galaxy (or spaxel) is often interpreted in terms of the stellar emission (a sum of SSPs) and an arbitrary number of (Gaussian) emission lines due to the presence of ionized gas. Here, we will investigate the possibility of modelling the gas emission as a sum of different components with varying densities and temperatures.
13:30 - 15:00 Lunch
15:00 - 15:30 Disk instabilities and star formation: multi-wavelength analysis at sub-kpc scales
Javier Piqueras (U. Oxford)
Abstract: Theoretical models predict that clumps form out of gravitational instabilities in gas-rich turbulent disks, resulting in massive star-forming regions. We propose to characterize the spatially-resolved Toomre parameter (Q) in two Luminous Infrared Galaxies (LIRGs), using high-resolution ALMA data to trace disk instabilities at sub-kpc scales. We will compare the 2D distribution of the Q parameter with the location of star-forming sites, traced by the ionized gas emission measured in near-IR IFS SINFONI observations.
15:30 - 16:00 Comparison of the stellar population properties obtained with different methodologies
Patricia Sánchez-Blazquez (UAM)
Abstract: We will compare the mean ages and metallicities (weighted with both, mass and light) using different techniques to reconstruct the star formation history. We will determine the possible bias associated to each methodology and try to converge towards an improved technique to derive these parameters.
16:00 - 16:30 Characterization of SN remnant dominated regions and Measurement of SN rates with IFS
Lluís Galbany (U. Pittsburgh)
Abstract: The study of supernova remnants (SNR) give insights on both the atomic processes occurring inside stars and the enrichment of the Interstellar medium (ISM). Large searches have been performed in the Galaxy and in SMC and LMC. Here, we will use different spectral fitting techniques to both search for SNR dominated regions in CALIFA data and study their star formation histories (SFH). This will help understanding their nature, and possibly will be useful to find a way to type their progenitor stars. Finally, we will measure the SN rate by considering the sample of ~150 SNe discovered in these ~700 galaxies plus the SNR detected in this survey.
16:30 - 17:00 Spectropolarimetry of an AGN with an extremely asymmetric Balmer line profile
P. Andrea Rojas Lobos (U. Strasbourg)
Abstract: Some AGNs show extremely asymmetric Balmer lines. This behaviour remains an enigma. We present total flux and polarized flux spectra of one such object. The data were obtained in January 2013 with the FORS2 spectrograph on the VLT. The students will use different tools to characterise the gas kinematics and cross-correlate the polarized and the total intensity. The results will be discussed in the context of possible physical explanations for the phenomenon.
17:00 - 18:00 Summary, discussion, and distribution of tasks.

Tuesday, 22 November

09:30 - 10:00 CALIFA [slides]
Rubén García-Benito (IAA-CSIC)
10:00 - 10:30 MaNGA [keynote] [PDF]
Bruno Rodríguez (CAB)
10:30 - 11:00 The All-weather MUse Supernova Integral field Nearby Galaxies (AMUSING) survey [slides]
Lluís Galbany (U. Pittsburgh)
11:00 - 11:30 KOALA [slides]
Ángel López-Sánchez (AAO/MQ)
11:30 - 12:00 Coffee break
12:00 - 12:30 SINFONI [slides]
Javier Piqueras (U. Oxford)
12:30 - 13:00 ALMA [slides]
Miguel Pereira (U. Oxford)
13:00 - 13:30 Skies and Universes [slides]
Johan Comparat (IFT UAM/CSIC)
13:30 - 14:00 SELGIFS Data Challenge [slides]
Giovanni Guidi (AIP)
14:00 - 15:00 Lunch
15:00 - 18:00 Write your own scripts to fetch and visualize these data.
Software setup and troubleshooting on your machine.

Wednesday, 23 November

09:30 - 10:00 Discussion: line measurements
10:00 - 10:30 RemoveYoung [slides]
Polychronis Papaderos (IA-CAUP)
10:30 - 11:30 Starlight [pyStarlight tutorial]
Rubén García-Benito (IAA-CSIC)
11:30 - 12:00 Coffee break
12:00 - 12:30 BaTMAn [slides]
Javier Casado (AIP)
12:30 - 13:30 Pipe3D [keynote] [PDF]
Héctor Ibarra (UNAM)
13:30 - 15:00 Lunch
15:00 - 18:00 Hands-on work on the science cases.

Thursday, 24 November

11:00 - 11:30 Steckmap [slides]
Patricia Sánchez-Blazquez (UAM)
11:30 - 12:00 Coffee break
12:00 - 13:00 pyParadise
Jakob Walcher (AIP)
13:00 - 14:30 Lunch
14:30 - 18:00 Hands-on work on the science cases.

Friday, 25 November

Additional work and summary of the results.
Organisation of the follow-up work required for publication.

UAM logo Estallidos logo SELGIFS logo

Page maintained with yWeb - Last updated on Fri Dec 16 14:21:07 2016 - ... Paranoy@ Rulz!