Date: Wednesday 25 October 2023

Time: 16:00 hrs

Place: Mayantigo building, 6th floor meeting room

Title: Españita 101

Presenter, Affiliation: Alejandro Bermudo

Abstract: A "brief" summary to understand the country, its people, and its culture. I hope that by the end we all understand why La Palma has a party every day

Date: Friday 6 October 2023

Time: 16:00 hrs

Place: Mayantigo building, 6th floor meeting room

Title: Lightning in a Bottle

Presenter, Affiliation: Benjamin Hauptmann, NOT

Abstract: Despite being known and feared for all of human history, the phenomenon of lightning is not well understood. In particular, the mechanism of cloud electrification eludes us. The few measurements taken of thunderstorm E-fields have thus far been very limited in scope. In this presentation, I detail the development, construction and testing of a new, drone-based system to further these measurements. By gliding on columns of laminar updraft, our fixed-wing aircraft should be able to probe the deadliest regions of a thunderstorm, completely autonomously. This work culminated in a high-altitude test flight which almost ended successfully.

Date: Friday 18 August 2023

Time: 16:00 hrs

Place: Mayantigo building, 6th floor meeting room

Title: Astronomy and Sustainability

Presenter, Affiliation: Alejandra Díaz, NOT

Abstract: As human civilization continues advancing, the concept of sustainability—the harmony between economic development, social equity, and the environment—is becoming more and more crucial. In 2015 the United Nations General Assembly set 17 Sustainable Development Goals with the aim to create a sustainable future for humanity by 2030. How can astronomy help meet these goals? The answer may surprise you!

Date: Friday 14 July 2023

Time: 16:00 hrs

Place: Mayantigo building, 6th floor meeting room

Title: Interacting Supernovae and when to find them Subtitle: Searching for late-time CSM interactions in SNe Ia in ZTF Presenter, Affiliation: Jacco Terwel, ING Abstract: Type Ia supernovae (SNe Ia) are among the brightest events in the universe, but despite decades worth of research the way they explode is still not exactly known. This is known as the progenitor problem. One piece that might help to solve this puzzle is the subclass of SN Ia-CSM: a supernova that interacts with circumstellar material. In this talk, I will give an overview of how to find these elusive objects, and what they can teach us about their past. Date: Friday 7 July 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Clusters' far-reaching influence on narrow angle tail radio galaxies Presenter, Affiliation: Kellie de Vos, ING Abstract: Galaxy clusters are the largest gravitationally bound objects in the universe, and are largely responsible for the environmental impacts of galaxy evolution. In this talk, I will discuss how these environmental effects can deform radio galaxies in such a way that we can determine their orbit around a galaxy cluster on the plane of the sky. Furthermore, I will present some unexpected results that indicate that there is more of an environmental impact on galaxy evolution in the outskirts of galaxy clusters than we previously thought, suggesting that these regions need more investigation. Date: Friday 30 June 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Determining stellar properties using BASTA Presenter, Affiliation: Mark Lykke Winther, Aarhus University Abstract: As the quality of observations increases over the years, so too must the stellar pipelines in order to take advantage of these. This requires both accurate stellar models, and a fitting algorithm capable of correctly matching observations to models. In this talk, I will focus on the latter, by giving an introduction to the BAyesian STellar Algorithm (BASTA). It is a versatile pipeline for determining stellar properties, by fitting a multitude of different types of observations to a grid of stellar models or isochrones, to precisely infer parameters such as mass and age. Apart from a general overview of the code, I will also summarise my most recent publication, where I’ve used the pipeline to determine the history of the convective core of the star Kepler-444. Date: Friday 16 June 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Hippos, the real stars Presenter, Affiliation: Kiran Jhass, ING Abstract: Hippos, like the subjects of many of your research, are dense balls of matter which vary in size, mass and colour. In this talk I will investigate the interactions, behaviours and characteristics which make them so fascinating and unique. Date: Friday 02 June 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Observational study on two type IIb supernova Presenter, Affiliation: Niilo Koivisto, NOT Abstract: I will present master’s thesis where I performed photometric and spectroscopic analysis on two type IIb supernovae, 2017gkk and 2019gaf. The observations were obtained using the Nordic Optical Telescope (NOT) and they cover epochs from early days to about a year after the explosion. The motivation for this long time series of spectra and light curves was to better understand the physics of core-collapse supernovae and especially transitional type IIb SNe. I will also give short summary on observations and significance of this new beautiful supernova 2023ixf which so nearby (~7 Mpc) that we can almost touch it! Date: Friday 19 May 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Building the local Milky Way halo – Investigating the origin of the local Milky Way stellar halo using Blue Straggler stars Presenter, Affiliation: Julie Thiim Gadeberg, NOT Abstract: Our current, leading theory describing the history of the Universe is the ΛCDM model. The model predicts that larger structures are formed through hierarchical clustering, and, thus, merger events are vital to the formation and evolution of larger galaxies such as the Milky Way. The remnants of such accretion events will be scattered throughout the Galaxy, building the Galactic halo that we can observe today. In this Journal Club I will explain how the peculiar blue straggler stars in the local stellar halo can help support this hypothesis by presenting the work I did during my master's thesis. Due to the origin story of these stragglers their number will differ depending on the mass and type of the astronomical object in which they are born, making them ideal for our purpose. It takes nothing more than a simple population count, and with the dawn of the Gaia spacecraft counting has never been easier. Date: Friday 21 April 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: WEAVE: instrumental and science opportunities for ING students Presenter, Affiliation: Marc Balcells, ING Abstract: In the coming decade WEAVE will be a key instrument for European astronomy. We will introduce the instrument characteristics and capabilities, with an emphasis on recent results from commissioning. We will then go over the eight WEAVE surveys and the teams that lead them, and will emphasize the opportunities for access throught the surveys and through open time. Date: Friday 24 March 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Sky is the limit - Measuring the airglow continuum Presenter, Affiliation: Joonas Uljas, University of Copenhagen Abstract: With the dawn of 40-meter class era, the main noise sources in astronomical observation are moving away from detectors and are becoming solely dominated by the sky. The line emission component of the night time atmosphere is quite well known, but the existence and characteristics of its continuum component is still debated in the literature. Airglow continuum is challenging to measure due to its faintness, and the fact that the diffraction gratings, the main dispersive elements in astronomical spectrographs, are prone to produce scattered light. In presence large amount of bright emission lines, such as the hydroxyl lines in the near infrared, this scattered light can seem as continuum. A new type of echelle spectrograph has been purpose designed and built for measuring the airglow continuum. I will discuss the first impression of the project. Date: Friday 10 March 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: A walk through fresh AstroNews Presenter, Affiliation: James Munday & Judith Santos, ING News link(s): Date: Friday 24 February 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Common envelope evolution: From binary star chrysalis to cosmic butterfly Presenter, Affiliation: David Jones, IAC Abstract: Planetary nebulae are some of the most strikingly beautiful astrophysical phenomena known, gracing many a glossy-paged, coffee-table book and earning them the nickname "cosmic butterflies". While classical stellar evolutionary theory states that planetary nebulae are the end products of intermediate mass stars, forming as the star leaves the Asymptotic Giant Branch and evolves towards the white dwarf phase, it is now clear that a significant fraction of planetary nebulae originate from a binary evolutionary pathway. As the immediate products of the common envelope, close-binary central stars of planetary nebulae offer a unique tool with which to study this rather poorly understood phase of binary evolution. Furthermore, as the nebula itself represents the ionised remnant of the ejected common-envelope, such planetary nebulae can be used to directly probe the mass, morphology and dynamics of the ejecta. Here, I will summarise our current understanding of the importance of binarity in the formation of planetary nebulae as well as what they can tell us about the common envelope phase - including the possible relationships with other post-common-envelope phenomena like novae and type Ia supernovae. News link(s): Date: Friday 10 February 2023 Time: 16:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Dwarves and giants as guardians of the galaxy Presenter, Affiliation: Jeppe Thomsen, NOT Abstract: For eras untold, the fire giants have kept the secrets of the galactic out of our grasp through trickery and subterfuge. But as they pair up with friend or foe, the eclipse will reveal the path ahead. News link(s): Journal Clubs in 2022 Date: Friday 07 December 2022 Time: 17:00 hrs Place: Mayantigo building, 6th floor meeting room Title: Binary Star systems Presenter, Affiliation: James Munday, ING News link(s): MNRAS Date: Friday 02 December 2022 Time: 17:00 hrs Place: Mayantigo building, 6th floor meeting room Title: An Astronomer Guide to Polarimetry Presenter, Affiliation: Zuri Gray, NOT News link(s): Article 1 (Lunar Flashlight), Article 2 (ERIS) Date: Friday 20 May 2022 Time: 16:00 hrs Place: online Title: Modelling Post-Common Envelope Binaries Presenter, Affiliation: George Hume, ING Paper link(s): RNAAS News link(s): Date: Friday 13 May 2022 Time: 15:00 hrs Place: online Title: Clusters' far-reaching influence on narrow-angle tail radio galaxies. Presenter, Affiliation: Kellie de Vos, UoN News link(s): Article 1 (MW's black hole, Sag A*), Article 2 ( OSIRIS-REx), Article 3 (Mars Insight rover), Article 4 (Mars Insight video) Date: Friday 29 April 2022 Time: 16:00 hrs Place: online Title: Entangled in the Cosmic Web: Probing the success of the Weave Wide Field Cluster Survey on the extraction of cosmic filaments Presenter, Affiliation: Daniel Cornwell, UoN News link(s): Article 1 (Exocomets), Article 2 (Uranus NASA mission), Article 3 (Magnetar), Article 4 (Io's dunes) Date: Friday 22 April 2022 Time: 16:00 hrs Place: online Title: Common envelope evolution: From binary star chrysalis to cosmic butterfly Presenter, Affiliation: David Jones, IAC News link(s): Article 1 (Most distant galaxy), Article 2 (Solar eclispe on mars), Article 3 (SETI) Date: Friday 08 April 2022 Time: 16:00 hrs Place: online Title: Bouncing against the Yellow Void - exploring the outbursts of Ï� Cas from visual observations Presenter, Affiliation: Anni Kasikov, NOT Paper link(s): JAAVSO News link(s): Article 1 (Most distant star), Article 2 (Mars rover) Date: Friday 04 February 2022 Time: 16:00 hrs Place: online Title: Exploring the morphologies of high redshift galaxies with unsupervised machine learning Presenter, Affiliation: Clár-Bríd Tohill, ING News link(s): Article 1 (Earth's Trojan asteroid), Article 2 (NASA NEA Scout) Article 3 (Carbon on Mars) Past Student Seminars: Journal Clubs in 2021 Date: Friday 10 December 2021 Time: 16:00 hrs Place: online Title: The Reclassification of type IIn supernovae and their mysterious environments Presenter, Affiliation: Conor Ransome, ING News link(s): Article 1 (Source of Earth's water), Article 2 (NASA IXPE launch) Date: Friday 3 December 2021 Time: 16:00 hrs Place: online Title: On the fragility of thin-discs in early-type galaxies Presenter, Affiliation: Pablo Galan, ING Date: Friday 26 November 2021 Time: 14:00 hrs Place: online Title: PISCO: The PMAS/PPak Integral-field Supernova Hosts Compilation Presenter, Affiliation: Luis Galbany, ICE Paper link(s): ApJ News link(s): Article 1 (Dart probe), Article 2 (Volcano, Astonauts), Article 3 (Molecules on Mars) Date: Friday 21 May 2021 Time: 19:00 hrs Place: online Title: Study of the turbulence with the hydrocode SPHYNX and its astrophysical applications. Presenter, Affiliation: Carlos Celma, ING News link(s): Article 1(Mars), Article 2(RV Tauri variable) Date: Friday 14 May 2021 Time: 16:00 hrs Place: online Title:Analysing the chemical abundance space of the Galactic disc with machine-learning methods Presenter, Affiliation: Ignacio Garcia, ING Date: Friday 7 May 2021 Time: 16:00 hrs Place: online Title:Effect of satellite constellations on observational astronomy Presenter, Affiliation: Nada Ihanec, ING Date: Friday 23 April 2021 Time: 17:30 hrs Place: online Title: Detection of large-scale X-ray bubbles in the Milky Way halo Paper Authors: P. Predehl et. al. Presenter, Affiliation: Akke Viitanen, NOT Paper link(s): nature News link(s): Article 1 (AI) Date: Friday 12 February 2021 Time: 16:00 hrs Place: online Title:Magellanic Clouds with SMASH Presenter, Affiliation: Pol Massana, ING News link(s): Article 1(Galaxy clustring), Article 2 (Exoplanet ), Article 3(Mars) Date: Friday 4 February 2021 Time: 16:00 hrs Place: online Title:Studying the Sagittarius galaxy within the Pristine Survey Presenter, Affiliation: Sara Vitali, NOT News link(s): Article 1(new X-ray source), Article 2 (Saturn) ​​​​​ Date: Friday 21 January 2021 Time: 16:00 hrs Place: online Title:Asteroid and meteorite compositional studies by modeling light scattering Presenter, Affiliation: Julia Martikainen, NOT Journal Clubs in 2020 Date: Wednesday 02 December 2020 Time: 18:00 hrs Title: Close binary stars and their evolution towards planetary nebulae Presenter, Affiliation: James Munday, IAC Date: Thursday 23 July 2020 Time: 16:00 hrs Place: online Title: The Dark Energy Survey Presenter, Affiliation: Aurelio Carnero Rosell, IAC News link(s): Article 1a.(Exoplanets), Article 1b., Article 2(Moon), Article 3(NASA) Date: Friday 17 July 2020 Time: 16:00 hrs Place: online Titles: Cell invasion studies using Two Photon Polimerization technique; Extragalactic Background light from the HST CANDLES survey; Stellar continuum fitting of UV spectra Presenter, Affiliation: Alberto Saldana, UNIGE Paper link(s): RSEF Date: Friday 26 June 2020 Time: 16:00 hrs Place: onilne Title: Astronomy Paper Seminar Participation Guide & Reading Walkthrough Paper Authors: Kevin C. Cooke, et. al. Presenter, Affiliation: Tereza Jerabkova, GTC Paper link(s): arXiv News link(s): Article 1, Article 2 (New Horizon, parallax), Article 3 (alien civilizations), Calculators Date: Friday 5 June 2020 Time: 16:00 hrs Place: Casa Tey Title: Discussions: exo-comets and exo-moons Date: Friday 29 May 2020 Time: 16:00 hrs Place: online Title: Discovery of an ultra-young stellar "snake" with two dissolving cores in the solar neighborhood Paper Author: Hai-Jun Tian Presenter, Affiliation: Macarena Garcia, ING Paper link(s): arXiv News link(s): Article 1 (Exoplanets), Article 2 ('Cow'), Article 3 (Solar System formation) Date: Friday 22 May 2020 Time: 16:00 hrs Place: online Title: Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287 Paper Authors: Seppo Laine, et. al. Presenter, Affiliation: Joonas Viuho, NOT Paper link(s): ApJL News link(s): Article 1 (Martian landscape), Article 2 (White Dwarf Photosphere), Article 3 (planet birth) Date: Friday 15 May 2020 Time: 16:00 hrs Place: online Title: Spatial Density and Model of Meteoroid Population. Presenter, Affiliation: Martin Balaz, GTC Title: THELI v3. Presenter, Affiliation: Viktoria Pinter, ING News link(s): Article 1 (Supernovae) Date: Friday 8 May 2020 Time: 16:00 hrs Place: online Title: ESO Instrument Finds Closest Black Hole to Earth Presenter, Affiliation: Jacob Hibbert, ING Paper link(s): ESO News link(s): Article 1 (Saturn), Article 2 (Pluto) Date: Friday 24 April 2020 Time: 16:00 hrs Place: online Title: ORISIS tunable filter data reduction Presenter, Affiliation: Antonio Cabrera Lavers, GTC News link(s): Article 1 (Old Voyager2 data), Article 2 (Curiosity Mars rover), Article 3 (GW) Date: Friday 17 April 2020 Time: 16:00 hrs Place: online Title:Mechanical Engineering for Scientific Infrastructures Presenter, Affiliation: Carlo Zanoni (Mechanical Engineer at ESO) Title: WHT laser beacon Presenter, Affiliation: Pinter Viktoria, ING Paper link(s): Article 1., Article 2., Article 3., Article 4., Date: Friday 10 April 2020 Time: 16:00 hrs Place: online Title: Starling satellites and their effect on ground based observations Presenter, Affiliation: Jacob Hibbert, ING News link(s): BepiColombo, Borisov a., Borisov b. Date: Friday 3 April 2020 Time: 16:00 hrs Place: online Title: A pulsating white dwarf in an eclipsing binary Paper Authors: Steven G. Parsons, et. al. Presenter, Affiliation: James Munday, GTC Paper link(s): nature, IAC Title: Discovery of a giant radio fossil in the ophiuchus galaxy cluster Paper Authors: S. Giacintucci, et. al. Presenter, Affiliation: Tom Steinmetz, ING Paper link(s): arXiv Title: High accuracy on H0 constraints from gravitational wave lensing events Paper Authors: P. Cremonese and V. Salzano Presenter, Affiliation: Macarena Garcia, ING Paper link(s): arXiv Date: Friday 27 March 2020 Time: 16:00 hrs Place: online Title: Tunable/ interference photometric filters Presenter, Affiliation: Joonas Viuho, NOT Date: Friday 20 March 2020 Time: 16:00 hrs Place: online Title: Tidally trapped pulsations in a close binary star system discovered by TESS Paper Authors: G. Handler, et. al. Presenter, Affiliation: David Jones (IAC) Paper link(s): nature , IAC Date: Friday 6 March 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: An astrometric search method for individually resolvable gravitational wave sources with Gaia Paper Authors: Christopher J. Moore, et. al. Presenter, Affiliation: Tereza Jerabkova, GTC Paper link(s): arXiv News link(s): Article 1 (Starling satellites effect), Article 2 (Arrokoth) , Article 3 (Vesta) Date: Friday 28 February 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: News News link(s): Article 1, Article 2 (New Moon), Article 3 Date: Friday 14 February 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: Secularly powered outflows from AGN: the dominance of non-merger driven supermassive black hole growth Paper Authors: R. J. Smethurst, et. al. Presenter, Affiliation: Macarena Garcia, ING Paper link(s): arXiv Title: ALMA catches beautiful outcome of stellar fight Paper Authors: H. Olofsson, et. al. Presenter, Affiliation: David Jones, IAC Paper link(s): ESO News link(s): Article 1 (ELT), Article 2 (Cheops), Article 3 (Cheops), Article 4 (Sun), Article 5 (Parker Solar Probe) Date: Friday 7 February 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: A Galactic-scale gas wave in the solar neighbourhood News Paper Authors: João Alves, et. al. Presenter, Affiliation: Tereza Jerabkova, GTC Paper link(s): nature, Radcliffe institute news Presenter, Affiliation: Jacob Hibbert, ING Software Description: phoebe Date: Friday 31 January 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: A limit on Planck-scale froth with ESPRESSO News Paper Authors: Cooke, Ryan; Welsh, Louise; Fumagalli, Michele; Pettini, Max Presenter, Affiliation: Jacob Hibbert, ING Paper link(s): arXiv News link(s): Article 1 , Article 2a , Article 2b , Article 3 , Article 4 Date: Friday 24 January 2020 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: A wide star-black-hole binary system from radial-velocity measurements Paper Authors: Jifeng Liu, Haotong Zhang, Xiangqun Cui, et. al. Presenter, Affiliation: Tereza Jerabkova, GTC Paper link(s): nature Related papers: Paper 1 , Paper 2 , Paper 3 , Paper 4 , Paper 5 , Paper 6 Journal Clubs in 2019 Date: Friday 29 November 2019 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: Star-formation in filaments, ASIAA (Taipei) workshop experience Presenter, Affiliation: Tereza Jerabkova, GTC Paper link(s): Paper 1 , Paper 2 News link(s): Article 1, Article 2, Article 3 Date: Friday 22 November 2019 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: News News link(s): Article 1, Article 2 a. , Article 2 b. , Article 2 c. Date: Friday 15 November 2019 Time: 16:00 hrs Place: Mayantigo building 6th floor meeting room Title: A BlueSONG; Tracing magnetic activity in the Ca II H & K lines of solar-type star using eShel, a commercial spectrograph mounted on the Hertzsprung SONG telescope Presenter, Affiliation: Nicholas Emborg Jannsen, NOT News link(s): Article 1, Article 2 Date: Friday 8 November 2019 Time: 15:30 hrs Place: Mayantigo building 6th floor meeting room Title: News News link(s): Article 1, Article 2, Article 3, Article 4 Date: Wednesday 23 October 2019 Time: 09:30 hrs Place: Mayantigo building 6th floor meeting room Title: CCDs Presenter, Affiliation: Joonas Viuho, NOT Date: Friday 18 October 2019 Time: 09:30 hrs Place: Mayantigo building 6th floor meeting room Title: Proving the outstanding capabilities of ImagingAtmospheric Cherenkov Telescopes in high timeresolution optical astronomy Paper Authors: T. Hassan, M. K. Daniel, for the VERITAS Collaboration (DESY Germany, CfA Arizona, USA) Presenter, Affiliation: Maria de la Macarena Garcia, ING Paper link: arXiv Date: Friday 11 October 2019 Time: 09:30 hrs Place: Mayantigo building 6th floor meeting room Title: Towards a 1% measurement of the Hubble Constant: accounting for time dilation in variable-star light curves This journal club was run previously by Tereza Jerabkova (2019/2020), Thomas Davison(2019), Macarena Garcia(2019/2020), Jacob Hibbert(2019/2020), , Viktoria Pinter(2019/2021), Clár-Brid Tohill(2021/2022), James Munday(2022/2023)

Contact: Last modified: 15 April 2024