Alva is a not-for-profit student organisation based at Lund Observatory, Lund University.  We arrange activities such as popular astronomy talks, observations of celestial objects with the Lund Observatory telescopes, trips to the Lund University Planetarium and other space-related activities.   ALVA exists for the sole purpose of sharing the love of science, space and astronomy.  ALVA is a recogn

https://www.astro.lu.se/form/join-alva-astronomy-club - 2025-02-01

Transcription of the second episode of the first season Nic:  Hi guys, his is season one, episode two, of the Meridian.  We are coming to you from Lund Observatory, in southern Sweden, on October 1st 2021, as we gear up to celebrate Culture Night this weekend.    Crossing our local meridian in this episode we have Josefin Martell here, who studies impact craters on Earth and prepares for investiga

https://www.astro.lu.se/meridian-s01e02 - 2025-02-01

Status message Sorry...This form is closed to new submissions. Leave this field blank

https://www.astro.lu.se/form/srs-2022-registration - 2025-02-01

Transcription of the third episode of the first season Nic:  Welcome, this is season one episode three of the Meridian, a podcast exploring the ins and outs of what's happening here at Lund Observatory.  This episode is airing on the 8th of October 2021, but if there are any listeners out there discovering the Meridian at a later date, then we just want to welcome you and hope that you find our ba

https://www.astro.lu.se/meridian-s01e03 - 2025-02-01

Transcription of the fourth episode of the first season Nic:  This is season one, episode four, of the Meridian, our brand new podcast.  We are coming to you on today on the 15th of October, from Lund Observatory. The nights are getting darker here on the northern hemisphere as we get closer into autumn and star gazing can take place again.    Crossing our local meridian in this fourth episode we 

https://www.astro.lu.se/meridian-s01e04 - 2025-02-01

The Vision Mission Summary The Consortium Science and technology roadmap for μas studies of the Milky Way The Art of Astrometry and Computation All-Sky Visible and Near Infrared Space Astrometry Science Cases All-sky NIR astrometry to peer through the dust of the Milky Way to reveal the hidden regions of the Galaxy.All-sky visible astrometry to combined with the older Gaia catalogue and a 20 year

https://www.astro.lu.se/GaiaNIR - 2025-02-01

The Legacy The era of all-sky space astrometry began with the Hipparcos mission in 1989 and provided the first very accurate catalogue of apparent magnitudes, positions, parallaxes and proper motions of 120 000 bright stars at the milliarcsec (or milliarcsec per year) accuracy level. Hipparcos has now been superseded by the results of the Gaia mission. The third Gaia data release contained astrome

https://www.astro.lu.se/GaiaNIR/Vision - 2025-02-01

A transcription of the sixth episode Nic:  This is the sixth and last episode of season one of the Meridian. We want to start by thanking everyone who has followed us on this journey into the world of podcasting and we hope to be back soon with the second season.  Today is the 29th of October, and as always, we're coming to you from Lund Observatory.  Crossing our local Meridian in this episode we

https://www.astro.lu.se/meridian-s01e06 - 2025-02-01

A seminar series for young astronomers at Lund Observatory. The Källén Seminars for Young Astronomers is a seminar series organised by and intended for the young researchers of Lund Observatory. The seminar series is financed by the Gunnar and Gunnel Källén’s Memorial Fund, the Faculty of Science and the Department of Astronomy and Theoretical Physics. The seminar series invites international spea

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers - 2025-02-01

The development of a new space astrometry mission will require a large team of scientist, software developers and spacecraft engineers. Many lessons can be learned from the Gaia mission where DPAC (the Data Processing and Analysis Consortium) was responsible for the processing of Gaia's data and producing the Gaia Catalogue. In a similar manner a new DPAC consortium will be formed.  The first task

https://www.astro.lu.se/GaiaNIR/consortium - 2025-02-01

Overview An obvious technological improvement to the current Gaia mission is to also go into the non-thermal Near-InfraRed (NIR) with a wavelength cutoff in the K-band allowing the new mission to probe deeper through the Galactic dust to observe the structure and kinematics of the star-forming regions in the disc, the spiral arms and the bulge region, to give model independent distances and proper

https://www.astro.lu.se/GaiaNIR/mission-summary - 2025-02-01

There are three main science challenges for a new all-sky astrometry mission: 1. Peering through the dust: NIR astrometry (and simultaneous photometry) is crucial for penetrating obscured regions and for observing intrinsically red objects when implemented with sufficient accuracy. Peering through the dust of the Milky Way to obtain a dense sampling of the phase space is necessary to properly stud

https://www.astro.lu.se/GaiaNIR/ScienceCase - 2025-02-01

A transcription of the mid-winter special episode, or the zeroth episode of season two. Nic:  This is a special holiday episode of the Meridian. Your hosts for this episode are me and Rebecca and our producer Anna, of course.  We are coming to you on the 21st of September 2021.   Rebecca:  Which is happens to be the winter solstice.   Nic:  It's actually the summer solstice.   Rebecca:  Or the win

https://www.astro.lu.se/meridian-s02e00 - 2025-02-01

Spacecraft The space telescope will be based on an off-axis f=35m Korsch telescope as used for Gaia.  Spacecraft design from the ESA CDF study Optical surfaces and the light path from the ESA CDF study This design differs from Gaia's in that: the mirror surfaces are simple conics to simplify manufacturing, alignment and test.  the entrance pupil is at a flat folding mirror in front of the primary

https://www.astro.lu.se/missiondesign - 2025-02-01

  < This could be presented as a picture (which is not as accessible to all audiences) or as general text> The 2010s Initial proposal... The 2020s Concept development and proposal phase. The 2030s Detailed design phase Mission acceptance phase The 2040s Launch Nominal operations Data processing phase starts The 2050s Data processing phase continues Extended operations phase  

https://www.astro.lu.se/timeline - 2025-02-01

Källén Seminar for Young Astronomers on March 1, 2022 The Density Gradient Inside Molecular-Gas Clumps as a Booster of their Star Formation Activity   ABSTRACT The presence of a gas volume-density gradient inside star-forming regions allows them to raise their star formation rate compared to what they would experience if their gas was of uniform density. This effect is quantified by the “magnifica

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers/previous-speakers/genevieve-parmentier - 2025-02-01

Källén Seminar for Young Astronomers on February 8, 2022 Seeing in 3D, modelling the structures of hot exoplanet atmospheres   ABSTRACT With the launch of JWST, astronomers are preparing to observe hot exoplanet atmospheres with unprecedented precision. With this comes valuable information of the 3D structures, temperatures, wind speeds and chemical compositions of these worlds. In addition to thi

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers/elspeth-lee - 2025-02-01

Källén Seminar for Young Astronomers on February 22, 2022 High-resolution transit spectroscopy: challenges and recent progress ABSTRACT I will briefly introduce the concept of transit photometry and spectroscopy and explain complementarity of space- and ground-based observations. Then I will focus on challenges of achieving the required data quality and importance of high spectral resolution. Fina

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers/previous-speakers/nikolai-piskunov - 2025-02-01

Källén Seminar for Young Astronomers on March 22, 2022 Venusian evolutionary histories and connections to present day observables ABSTRACT Despite Venus & Earth having distinct atmospheres and surface temperatures, they have similar densities and sizes. They may also likely have similar bulk compositions, making comparison between them extremely valuable for illuminating their distinct climate his

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers/previous-speakers/michael-way - 2025-02-01

Källén Seminar for Young Astronomers on March 8, 2022 Probing the early Milky Way with the Pristine survey ABSTRACT The lowest metallicity stars that still exist today represent a window into the early Universe. Studying these stars gives us a local avenue to guide our understanding of star formation and supernova feedback in the early Universe, the early build-up of galaxies like our Milky Way, a

https://www.astro.lu.se/meetings/kallen-seminars-young-astronomers/previous-speakers/else-starkenburg - 2025-02-01