JWST Master Class local workshop in Lithuania for Baltic states was organized on February 20-21, 2020 in Vilnius, Vilnius University.

The JWST proposal planning tools (APT and ETC) are quite complex. Therefore a 2-day workshop was organized in Vilnius, Lithuania in order to train participants on how to use these proposal tools and to stimulate proposal ideas. In a 2 day workshop where JWST experts trained selected researchers from ESA member states on JWST proposal planning tools, resources and documentation. Topics of the workshop: JWST mission status and instruments: NIRCam, NIRSpec, NIRISS, MIRI, available proposal tools and end-to-end tools usage, available observing science modes and observing strategies.

Material of the Master Class can be found here: http://mao.tfai.vu.lt/masterclass

Participants of the MasterClass

 

Outreach podcast of the MasterClass with Tim Rawle - ESA [English with Lithuanian subtitles]

 

Lithuanian National Television outreach TV show “Mokslo ekspresas”, 2018 November 25 d. Inerview on the subject of the project.  [Lithuanian].

 

Paper on the topic of the project in annual outreach journal "Lietuvos dangus 2019" (ISSN 1392-0987), p.3-7, 2018, Vilnius University Press.   [Lithuanian].

 

Paper on the topic of the project in annual outreach journal "Lietuvos dangus 2021" (ISSN 1392-0987), p. 29-40, 2020, Vilnius University Press.   [Lithuanian].

 

Test

JWST science

 

  1. Galactic chemodynamical evolution
  2. Galactic Archeology and ancient substructures
  3. Extra mixing processes in evolved stars
  4. RS CVn type stars
  5. Open cluster studies
  6. Exoplanets

 

Galactic chemodynamical evolution

The formation and evolution of galaxies is one of the great unsolved problems of modern astrophysics. The only galaxy available for detail studies is our Milky Way Galaxy, but our Galaxy is complex structure and evidently undergone very complicated formation history.

 Low mass stars have long lifetimes, comparable to the age of the Galaxy and their atmospheres have preserved much of their original chemical composition. These stars are ‘fossils’ containing information about chemical composition of galactic material at the moment of birth of these stars. Therefore low to intermediate mass stars of different ages preserved information about a history of evolution of the Galaxy in their chemical composition.

(Papers)

Galactic Archeology and ancient substructures

Our Milky Way Galaxy is complex structure and evidently undergone very complicated formation history. Galactic Archeology attempts to reveal that history by reconstructing the lost stellar substructures of the Galaxy, thereby backtracking formation processes. ‘Signposts’ of historic evolutionary events are chemically and dynamically linked stellar substructures. Those ‘fossil’ substructures are identified and backtracked to former evolutionary events by combining together stellar chemical analysis data and dynamical analysis. Stars formed together have same chemical composition, thereby if star-forming aggregates have unique ‘chemical signatures’, we can use chemical composition to ‘tag’ disk stars to a common formation event.

 

 

Extra mixing processes

Stellar evolution is caused by nuclear reactions in stellar cores slowly changing the internal stellar composition and structure. Mixing processes in stellar interiors can change properties of stellar material and structure, and can influence evolution of the star. As stellar evolution models are widely used in the modern stellar astrophysics, mixing processes potentially could have a wide impact on various seemingly unrelated astrophysical problems.

Investigation into abundances of mixing-sensitive elements can independently verify stellar evolution models. Numerous modern observations provide compelling evidence of additional or ‘extra’ mixing process in the low–mass red giant (RGB) stars unpredicted by standard evolution model, i.e. evidence that the standard stellar evolution model is incomplete

(papers)

 

RS CVn type stars

 Open clusters

Open clusters are important tools for the study of the Galactic disk as well as for understanding of stellar evolution. Since cluster members initially were of identical chemical composition, all changes in stellar atmospheres are related to internal and external processes of stellar evolution.

 Exoplanets 

The characterisation of discovered exoplanets by TESS or other space missions employing HST or VLT spectroscopic data is very important and challenging goal. This kind of analysis is an important preaparation for work with the high-resolution planet transit spectra to be obtained with the NASA/EAS/CAS James Webb Space Telescope.

BalticGrid

Astrospectroscopy group of VU ITPA.

The BOCCE project is aimed at obtaining in the most homogeneous way the properties (age, distance, reddening, metallicity and detailed elemental abundances) of a sample of (mostly old) Galactic Open Clusters. A detailed description of our program and the results of the first part of the photometric survey can be found in Bragaglia & Tosi (2006).

The clusters observations can be divided in three parts:

(1) PHOTOMETRY : multiband optical CCD photometry (usually BVI)

(2) LOW-RED SPECTROSCOPY: multi object spectra to derive radial velocity and membership

(3) HIGH-RES SPECTROSCOPY:  to measure metallicity and detailed chemical composition

 

Age, distance, reddening and a first indication of metallicity are obtained using the synthetic colour-magnitude diagram technique (as developed in Tosi et al. 1991).  
Results of the first 20 OCs can be found in Table 1
The CMDs for the first 20 OCs can be seen here

High-res spectra (This email address is being protected from spambots. You need JavaScript enabled to view it. ESO, UVES@VLT, SARG@TNG, with R=30000-48000) have been obtained for 3-6 red clump stars per cluster.  [Fe/H] and detailed metallcities for several clusters have been determined. See Table 2 for a list of the clusters already analyzed. 

MOS with LRS@TNG has been used to derve RVs of stars in key evolutionary phases (Be 29, Be 32, Be 17 done up to now)

 
The list of papers related to the BOCCE project can be found here :  (link to publication list)


The Figure below indicates the position of the BOCCE clusters in the MW, with the Galactic Center at 0,0 and the Sun at 8 kpc from the center. The different colour/symbols indicate the advancement of the study of a particular cluster.

 
                Location of the BOCCE clusters in the MW
The Figure below  shows the histogram of ages and Galactocentric radii (Rgc) of OCs in the BOCCE sample (as in October 2007) and the radial metallicity gradient (symbols refer to different sources of data, all from the BOCCE project or from literature).                      


http://www.gaia-eso.eu/sites/default/files/gaia-eso-logo.png

The Gaia-ESO Public Spectroscopic Survey will obtain high quality spectroscopy of some 100,000 Milky Way stars, in the field and in open clusters, down to magnitude 19, systematically covering

images/articleimg/Selection_003.png major components of the Milky Way. This survey will provide the first homogeneous overview of the distributions of kinematics and chemical element abundances in the Galaxy.

The Gaia-ESO Public Spectroscopic Survey employs the VLT FLAMES instrument (both GIRAFFE and UVES) for high quality spectroscopy of some 100,000 stars in the Milky Way. This survey has beenawarded 300-nights over the coming five years, with the first data being taken in December 2011.
 
Element abundance distribution functions of the Milky Way Bulge, the thick Disc, the thin Disc, and the Halo stellar components, as well as a very significant sample of 100 open clusters, covering all accessible cluster ages and stellar masses. This alone will revolutionise knowledge of Galactic and stellar evolution. When combined with precision astrometry, delivering accurate distances, 3D spatial distributions, 3D space motions, and improved astrophysical parameters for each star, the survey will quantify the formation history and evolution of young, mature and ancient Galactic populations. The precision astrometry will be provided by the Gaia “Galactic census”, with the first astrometric data release likely to occur in 2016, in time for the full
analysis of the complete Gaia-ESO Survey data.

The Vilnius node of the survey adds significant input in the survey results:

We are one of the nodes, that provides main atmospheric parameters and chemical abundances for stars observed using UVES spectrograph. Specifically we are the only node to derive carbon and nitrogen abundances form molecular lines.

Together with Nice node we derive abundances from GIRAFFE spectra. Our common work is 1/3 of the input for GIRAFFE abundance analysis. We are mostly interested in Galactic abundance gradients.

Members of Vilnius group:

Gražina Tautvaišienė - group leader

Markus Ambrosch

Vilius Bagdonas

Yuriy Chorniy

Arnas Drazdauskas

Šarūnas Mikolaitis

Renata Minkevičiūtė

Edita Stonkutė

Carlos Viscasillas Vázquez

What we achieved? Our recent achievements are already in a number of Gaia-ESO papers:

  • 2022MNRAS.509.1664J

    The Gaia-ESO Survey: Membership probabilities for stars in 63 open and 7 globular clusters from 3D kinematics

    • Jackson, R. J.; Jeffries, R. D.; Wright, N. J. 26 more

  • Gaia-ESO Survey: Detailed elemental abundances in red giants of the peculiar globular cluster NGC 1851

    • Tautvaisiene, G.; Drazdauskas, A.; Bragaglia, A. 24 more

  • Gaia-ESO survey: Lithium abundances in open cluster Red Clump stars

    • Magrini, L.; Smiljanic, R.; Franciosini, E. 25 more

  • The Gaia-ESO Survey: Galactic evolution of lithium from iDR6

    • Romano, D.; Magrini, L.; Randich, S. 31 more

  • The Gaia-ESO Survey: a new approach to chemically characterising young open clusters. II. Abundances of the neutron-capture elements Cu, Sr, Y, Zr, Ba, La, and Ce

    • Baratella, M.; D'Orazi, V.; Sheminova, V. 32 more

  • The Gaia-ESO survey: Mixing processes in low-mass stars traced by lithium abundance in cluster and field stars

    • Magrini, L.; Lagarde, N.; Charbonnel, C. 42 more

  • The Gaia-ESO Survey: Oxygen Abundance in the Galactic Thin and Thick Disks

    • Franchini, Mariagrazia; Morossi, Carlo; Di Marcantonio, Paolo 18 more

  • The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity

    • Randich, S.; Pasquini, L.; Franciosini, E. 20 more

  • The Gaia-ESO Survey: an extremely Li-rich giant in globular cluster NGC 1261

    • Sanna, N.; Franciosini, E.; Pancino, E. 16 more

  • The Gaia-ESO survey: the non-universality of the age-chemical-clocks-metallicity relations in the Galactic disc

    • Casali, G.; Spina, L.; Magrini, L. 36 more

  • The Gaia-ESO Survey: a new approach to chemically characterising young open clusters. I. Stellar parameters, and iron-peak, α-, and proton-capture elements

    • Baratella, M.; D'Orazi, V.; Carraro, G. 33 more

  • The Gaia-ESO Survey: Carbon Abundance in the Galactic Thin and Thick Disks

    • Franchini, Mariagrazia; Morossi, Carlo; Di Marcantonio, Paolo 24 more

  • The Gaia-ESO survey: Calibrating a relationship between age and the [C/N] abundance ratio with open clusters

    • Casali, G.; Magrini, L.; Tognelli, E. 51 more

  • The Gaia-ESO Survey: The inner disc, intermediate-age open cluster Pismis 18

    • Hatzidimitriou, D.; Held, E. V.; Tognelli, E. 34 more

  • VizieR Online Data Catalog: NGC6530 member parameters from Gaia-ESO survey (Prisinzano+ 2019)

    • Prisinzano, L.; Damiani, F.; Kalari, V. 33 more

  • The Gaia-ESO Survey: Age spread in the star forming region NGC 6530 from the HR diagram and gravity indicators

    • Prisinzano, L.; Damiani, F.; Kalari, V. 33 more

  • The Gaia-ESO Survey: impact of extra mixing on C and N abundances of giant stars

    • Lagarde, N.; Reylé, C.; Robin, A. C. 30 more

  • The Gaia-ESO Survey: The N/O abundance ratio in the Milky Way

    • Magrini, L.; Vincenzo, F.; Randich, S. 31 more

  • The Gaia-ESO Survey: the origin and evolution of s-process elements

    • Magrini, L.; Spina, L.; Randich, S. 45 more

  • The Gaia-ESO Survey: properties of newly discovered Li-rich giants

    • Smiljanic, R.; Franciosini, E.; Bragaglia, A. 41 more

  • The Gaia-ESO Survey: evidence of atomic diffusion in M67?

    • Bertelli Motta, C.; Pasquali, A.; Richer, J. 37 more

  • The Gaia-ESO Survey: open clusters in Gaia-DR1 . A way forward to stellar age calibration

    • Randich, S.; Tognelli, E.; Jackson, R. 42 more

  • The Gaia-ESO Survey: Lithium enrichment histories of the Galactic thick and thin disc

    • Fu, X.; Romano, D.; Bragaglia, A. 32 more

  • The Gaia-ESO Survey: matching chemodynamical simulations to observations of the Milky Way

    • Thompson, B. B.; Few, C. G.; Bergemann, M. 39 more

  • VizieR Online Data Catalog: Gaia-ESO Survey in 7 open star cluster fields (Randich+, 2018)

    • Randich, S.; Tognelli, E.; Jackson, R. 43 more

  • The Gaia-ESO Survey: Galactic evolution of sulphur and zinc

    • Duffau, S.; Caffau, E.; Sbordone, L. 48 more

  • The Gaia-ESO Survey: radial distribution of abundances in the Galactic disc from open clusters and young-field stars

    • Magrini, L.; Randich, S.; Kordopatis, G. 44 more

  • VizieR Online Data Catalog: Gaia-ESO Survey. Trumpler 23 (Overbeek+, 2017)

    • Overbeek, J. C.; Friel, E. D.; Donati, P. 33 more

  • The Gaia-ESO Survey. Mg-Al anti-correlation in iDR4 globular clusters

    • Pancino, E.; Romano, D.; Tang, B. 24 more

  • VizieR Online Data Catalog: Gaia-ESO Survey abundances radial distribution (Magrini+, 2017)

    • Magrini, L.; Randich, S.; Kordopatis, G. 44 more

  • The Gaia-ESO Survey: the inner disk, intermediate-age open cluster Trumpler 23

    • Overbeek, J. C.; Friel, E. D.; Donati, P. 33 more

  • The Gaia-ESO Survey: CNO Abundances in Open Clusters of our Galaxy

    • Drazdauskas, A.; Tautvaišienė, G.; Mikolaitis, Š. 5 more

  • The Gaia-ESO Survey: Hydrogen lines in red giants directly trace stellar mass

    • Bergemann, Maria; Serenelli, Aldo; Schönrich, Ralph 27 more

  • The Gaia-ESO Survey: revisiting the Li-rich giant problem

    • Casey, A. R.; Ruchti, G.; Masseron, T. 48 more

  • The Gaia-ESO Survey: the selection function of the Milky Way field stars

    • Stonkutė, E.; Koposov, S. E.; Howes, L. M. 26 more

  • The Gaia-ESO Survey: Inhibited extra mixing in two giants of the open cluster Trumpler 20?

    • Smiljanic, R.; Franciosini, E.; Randich, S. 32 more

  • The Gaia-ESO Survey: Probes of the inner disk abundance gradient

    • Jacobson, H. R.; Friel, E. D.; Jílková, L. 41 more

  • VizieR Online Data Catalog: Gaia-ESO Survey. Parameters for cluster members (Jacobson+, 2016)

    • Jacobson, H. R.; Friel, E. D.; Jilkova, L. 41 more

  • The Gaia-ESO Survey: Sodium and aluminium abundances in giants and dwarfs. Implications for stellar and Galactic chemical evolution

    • Smiljanic, R.; Romano, D.; Bragaglia, A. 40 more

  • VizieR Online Data Catalog: Gaia-ESO Survey: Tr 20, NGC4815, NGC6705 (Tautvaisiene+, 2015)

    • Tautvaisiene, G.; Drazdauskas, A.; Mikolaitis, S. 30 more

  • The Gaia-ESO Survey: chemical signatures of rocky accretion in a young solar-type star

    • Spina, L.; Palla, F.; Randich, S. 23 more

  • The Gaia-ESO Spectroscopic Survey: CNO abundances in giants of the multiple-population globular cluster NGC 1851

    • Tautvaisiene, Grazina; Drazdauskas, Arnas; Lardo, Carmela 3 more

  • The Gaia-ESO Survey: Insights into the inner-disc evolution from open clusters

    • Magrini, L.; Randich, S.; Donati, P. 37 more

  • The Gaia-ESO Survey: Detailed abundances in the metal-poor globular cluster NGC 4372

    • San Roman, I.; Muñoz, C.; Geisler, D. 28 more

  • The Gaia-ESO Survey: CNO abundances in the open clusters Trumpler 20, NGC 4815, and NGC 6705

    • Tautvaišienė, G.; Drazdauskas, A.; Mikolaitis, Š. 30 more

  • The Gaia-ESO Survey: the chemical structure of the Galactic discs from the first internal data release

    • Mikolaitis, Š.; Hill, V.; Recio-Blanco, A. 31 more

  • The Gaia-ESO Survey: α-abundances of metal-poor stars

    • Jackson-Jones, R.; Jofré, P.; Hawkins, K. 21 more

  • The Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars

    • Smiljanic, R.; Korn, A. J.; Bergemann, M. 99 more

  • VizieR Online Data Catalog: Abundances from Gaia-ESO Survey (Mikolaitis+, 2014)

    • Mikolaitis, S.; Hill, V.; Recio-Blanco, A. 31 more

  • The Gaia-ESO Survey: Stellar content and elemental abundances in the massive cluster NGC 6705

    • Cantat-Gaudin, T.; Vallenari, A.; Zaggia, S. 52 more

  • The Gaia-ESO Survey: Metallicity of the Chamaeleon I star-forming region

    • Spina, L.; Randich, S.; Palla, F. 37 more

  • VizieR Online Data Catalog: Gaia-ESO Survey: NGC6705 (Cantat-Gaudin+, 2014)

    • Cantat-Gaudin, T.; Vallenari, A.; Zaggia, S. 52 more

  • The Gaia-ESO Survey: radial metallicity gradients and age-metallicity relation of stars in the Milky Way disk

    • Bergemann, M.; Ruchti, G. R.; Serenelli, A. 44 more

  • Gaia-ESO Survey: Properties of the intermediate age open cluster NGC 4815

    • Friel, E. D.; Donati, P.; Bragaglia, A. 34 more

  • The Gaia-ESO Survey: Abundance ratios in the inner-disk open clusters Trumpler 20, NGC 4815, NGC 6705

    • Magrini, L.; Randich, S.; Romano, D. 49 more

  • The Gaia-ESO Survey: Reevaluation of the parameters of the open cluster Trumpler 20 using photometry and spectroscopy

    • Donati, P.; Cantat Gaudin, T.; Bragaglia, A. 34 more

  • The Gaia-ESO Public Spectroscopic Survey

    • Gilmore, G.; Randich, S.; Asplund, M. 273 more

Research schools

We host astronomical research courses and summer schools for PhD students. The course are aimed students in their PhD studies, and contain lectures by internationally top scientists, observations, exercises and assignments based mostly on own observations. The participants, who will end the Course with a successful presentation of work on the large assignment will be recommended to 6 ECU credits towards a doctoral degree. Typically all telescopes of Molėtai astronomical observatory are employed, together with remote observations using Nordic Optical and Teide telescopes in Canary Islands. Our site at Molėtai Astronomical Observatory usually hosts a summer schools every year (e.g. NordForsk, NEON, AstroBiology, BalticGrid). Read more @ mao.itpa.lt/schools/

 

Public outreach

We host annual public open events in Molėtai Astronomical observatory:

European Researchers' Night is a Europe-wide public event dedicated to popular science and fun learning. It takes place each year on the last Friday in September. More than 30 countries and over 300 cities are involved. For our visitors we are giving the chance get updated with the latest astronomical news and ask their own questions, visit telescopes of Observatory, and observe some interesting astronomical objects through amateur telescopes. Thus, our site in Molėtai Astronomical observatory offers public lectures, observations and many more activities for up to 800 visitors during one night every year. Also, we host a number of smaller public events (e.g. public eclipse observations, Hubble 25th anniversary…).

Molėtai Astronomical Observatory is our main public outreach and educational program center. Observatory is located about 70 km. away from Vilnius. http://mao.tfai.vu.lt/mao/en

 

What it is?

What we do?

Our papers about it.

What it is?

What we do?

Our papers about it.

Astrospectroscopy and Exoplanets Group works focuses its activities on these scientific research areas:

Material mixing processes in atmospheres of evolved stars.
Chemical evolution of the Milky Way.
Main atmospheric parameters and chemical composition of planet-harbouring stars.
Characterization of exoplanets and their transits.

Papers published by the group (link to NASA ADS)

 

tautvaisiene3

habil dr. Gražina Tautvaišienė

Professor, Chief Researcher

Office: B430
Phone: +370 5 2234666
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/tautvaisiene

janulis2

dr. Rimvydas Janulis

Senior Researcher

Office: B427
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

mikolaitis

dr. Šarūnas Mikolaitis

Senior Researcher

Office: B432
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

minkeviciute

dr. Renata Minkevičiūtė

Senior Researcher

Office: B433
Phone: +370 5 2234670
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/minkeviciute

  pakstiene

dr. Erika Pakštienė

Senior Researcher

Office: B427
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

  stonkutee3

dr. Edita Stonkutė

Senior Researcher

Office: B433
Phone: +370 5 2234670
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/estonkute

  drazdauskas2

dr. Arnas Drazdauskas

Senior Researcher

Office: B432
Phone: +370 5 2234669
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/drazdauskas

  chorniy2

dr. Yuriy Chorniy

Researcher

Office: B428
Phone: +370 5 2234668
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 viscasillas

Carlos Viscasillas Vazquez

Researcher

Office: B428
Phone: +370 5 2234668
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/viscasillas

  ambrosch

Markus Ambrosch

Junior Researcher

Office: B416
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/ambrosch

 bale

Barkha Bale

PhD Student

Office: B416
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ambrosch

Ashutosh Sharma

PhD Student

Office: B416
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ambrosch

Rūta Urbonavičiūtė

PhD Student

Office: A401
Phone: +370 5 2234636
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 bagdonas2

Vilius Bagdonas

PhD Student

Office: B416
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website: https://www.ff.vu.lt/en/itpa/staff/bagdonas

 

 

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Thursday the 26th - @itpavu - top10binaryoptions