Wikipedia

Yakiv Pavlenko

Yakiv Volodymyrovych Pavlenko ((1954-01-24)24 January 1954 – (2024-10-19)19 October 2024) was a Ukrainian astronomer and astrophysicist, who researched low-mass stars and exocomets.

Yakiv Volodymyrovych Pavlenko
Павленко Яків Володимирович
Born(1954-01-24)January 24, 1954
Makalevichi [uk], Ukraine
Died19 October 2024(2024-10-19) (aged 70)
Ukraine
NationalityUkrainian
Alma materKyiv University
Awards2009: Prize after Barabashov of the National Academy of Sciences of Ukraine [uk]
2014: State Prize of Ukraine in Science and Technology
2016: Basic Science Book Award of the International Academy of Astronautics
Scientific career
Fieldsastrophysics, astronomy
InstitutionsMAO NASU [uk]
ThesisFormation of lithium lines in atmosheres of late-type stars without LTE (1996)
Websitemao.kiev.ua/staff/yp/

Early life and education

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He was born in 1954 in Makalevychi [uk] village, Zhytomyr region, Ukraine.[1] Pavlenko graduated from Kyiv University in 1976 with a Master's degree in Astronomy and Physics.[2] He was a student of Mykola Avenirovych Yakovkin, a son of Avenir Aleksandrovich Yakovkin.[3]

Pavlenko was an Aspirant at Tartu Observatory (Estonia) in 1979–1982, where he received a Candidate of Sciences degree in Astrophysics and Radioastronomy in 1984.[4][5] He received a Doctor of Science degree in Astrophysics and Radioastronomy at MAO NASU in 1996.[1]

Career and research

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Pavlenko worked at the Main Astronomy Observatory of the National Academy of Sciences of Ukraine [uk] (MAO NASU) from 1983.[citation needed] From 1994, he was a Senior Research Fellow.[1] From 2017, Pavlenko headed the Department of Physics of Substellar and Planetary Systems of MAO NASU.[6] In 2023, Pavlenko become Chief Research Fellow at the Department of Physics of Substellar and Planetary Systems of MAO NASU.[7]

Beginning in 1989, Pavlenko collaborated with the research group on Exoplanets and Astrobiology of the Instituto de Astrofísica de Canarias (IAC).[8][9]

In January 2020, Mario Damasso and colleagues published a paper[10] on the discovery of Proxima Centauri c, the second exoplanet near Proxima Centauri.[11] To exclude fluctuations in spectrum resulted of red dwarf flare activity, Damasso used research work[12] by Pavlenko and others at IAC on analysing spectrography data of HARPS mission.[13][14][15]

In 2022, a paper with the results of exocomets research and discovery of 5 new exocomets,[16] written by Pavlenko together with others at MAO NASU, was published in the journal Astronomy & Astrophysics.[17][18] In autumn of that year, he visited IAC to model the atmospheres of brown dwarf and exoplanets objects.[9][19]

In addition to his research work, Pavlenko was a lecturer[20] and examiner,[21] and was one of editors of the journal Kinematics and Physics of Celestial Bodies [uk].[22][23][24] From 2023, he was an expert adviser to the Science at Risk! project,[25] a Ukrainian digital platform that disseminates information on the effects of war on scientific research in Ukraine.[26]

Personal life

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Pavlenko's wife had a PhD in astrophysics; they had a daughter.[1]

Yakiv Pavlenko died on 19 October 2024, at the age of 70. Yaroslav Yatskiv [uk] published an obituary on the MAO NASU site.[27]

Awards

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Publications

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Research papers
  • Pavlenko, Ya. V.; Suárez Mascareño, A.; Zapatero Osorio, M. R.; Rebolo, R.; Lodieu, N.; Béjar, V. J. S.; González Hernández, J. I.; Mohorian, M. (2019). "Temporal changes of the flare activity of Proxima Centauri". Astronomy & Astrophysics. 626: A111. arXiv:1905.07347. Bibcode:2019A&A...626A.111P. doi:10.1051/0004-6361/201834258. ISSN 0004-6361.
  • Eduardo L Martín, Nicolas Lodieu, Yakiv Pavlenko, Víctor J. S. Béjar (2018). The lithium depletion boundary and the age of the Hyades cluster. The Astrophysical Journal 856 (1): 40 doi:10.3847/1538-4357/aaaeb8
  • J. S. Jenkins, L. W. Ramsey, H. R. A. Jones, Y. Pavlenko, J. Gallardo, J. R. Barnes, D. J. Pinfield (2009). Rotational Velocities for M Dwarfs. The Astrophysical Journal 704: 975–988 doi:10.1088/0004-637X/704/2/975
  • J. S. Jenkins, H. R. A. Jones, Y. Pavlenko, D. J. Pinfield, J. R. Barnes, Yu. Lyubchik (2008). Metallicities and activities of southern stars. Astronomy & Astrophysics 485: 571–584 doi:10.1051/0004-6361:20078611
  • G. J. Harris, J. Tennyson, B. M. Kaminsky, Ya. V. Pavlenko, H. R. A. Jones (2006). Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas. Monthly Notices of the Royal Astronomical Society 367: 400–406 doi:10.1111/j.1365-2966.2005.09960.x
  • Ya. V. Pavlenko, A. Magazzu (1996). Theoretical LTE and non-LTE curves of growth for LiI lines in G-M dwarfs and subgiants. Astronomy & Astrophysics 311: 961–967
  • Y. V. Pavlenko, R. Rebolo, E. L. Martin, R. J. Garcia Lopez (1995). Formation of lithium lines in very cool dwarfs. Astronomy & Astrophysics 303: 807–818
Books

References

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  1. ^ a b c d Pavlenko, Yakiv V. (25 December 2022). "CURRICULUM VITAE" (TXT). mao.kiev.ua/staff/yp (CV).
  2. ^ "Випускники – Кафедра астрономії та фізики космосу" (in Ukrainian). Retrieved 29 October 2024.
  3. ^ Лозицький, В.Г. (25–29 May 2015). "М.А. Яковкін — талановитий вчений, вчитель і наставник (до 100-річчя з дня народження)". Астрономія та фізика космосу в Київському університеті [Astronomy and Space Physics at Kyiv University] (PDF) (in Ukrainian). p. 15.
  4. ^ Pavlenko, Ya.V. (1983). "Эффекты отклонения от условий локального термодинамического равновесия в атмосферах М-гигантов". fizmathim.com (Manuscript). Kyiv: MAO NASU.
  5. ^ Pavlenko, Ya.V. (1984). "Эффекты отклонения от ЛТР в атмосферах М-гигантов". www.etera.ee (Monography) (in Russian). Tallin: Valgus. Retrieved 29 October 2024.
  6. ^ "Історична довідка". mao.kiev.ua. Retrieved 29 October 2024.
  7. ^ "1.3. Department of Physics of Substellar and Planetary Systems, Main Astronomical Observatory". www.old.nas.gov.ua (in Ukrainian). Retrieved 29 October 2024.
  8. ^ "Substellar – Group Members". research.iac.es. Retrieved 29 October 2024.
  9. ^ a b "Yakiv Pavelenko: "OSIRIS is a very useful instrument for the investigation of low mass late-type hosting stars and exoplanets which cannot be observed directly"". Instituto de Astrofísica de Canarias. 14 December 2016. Retrieved 29 October 2024.
  10. ^ Damasso, Mario; Del Sordo, Fabio; Anglada-Escudé, Guillem; Giacobbe, Paolo; Sozzetti, Alessandro; Morbidelli, Alessandro; Pojmanski, Grzegorz; Barbato, Domenico; Butler, R. Paul; Jones, Hugh R. A.; Hambsch, Franz-Josef; Jenkins, James S.; López-González, María José; Morales, Nicolás; Peña Rojas, Pablo A. (17 January 2020). "A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU". Science Advances. 6 (3): eaax7467. Bibcode:2020SciA....6.7467D. doi:10.1126/sciadv.aax7467. ISSN 2375-2548. PMC 6962037. PMID 31998838. Very recently, Pavlenko et al. analyzed the temporal variations of some chromospheric emission lines from the same HARPS optical spectra of our sample.
  11. ^ "A new super-Earth may orbit the star next door". Science. 15 January 2020. Retrieved 29 October 2024.
  12. ^ Pavlenko, Ya. V.; Suárez Mascareño, A.; Zapatero Osorio, M. R.; Rebolo, R.; Lodieu, N.; Béjar, V. J. S.; González Hernández, J. I.; Mohorian, M. (June 2019). "Temporal changes of the flare activity of Proxima Centauri". Astronomy & Astrophysics. 626: A111. arXiv:1905.07347. Bibcode:2019A&A...626A.111P. doi:10.1051/0004-6361/201834258. ISSN 0004-6361.
  13. ^ "Проксима Центавра може бути домом для другої планети [оновлено]". scienceukraine.com (in Ukrainian). 16 January 2020. Archived from the original on 23 September 2020. Автори використали наші результати, отримані у співпраці з групою вчених з Інституту астрофізики на Канарських о-вах, для того, щоб відкинути можливість пояснення довгоперіодичної варіації параметрів спектру Проксими явищами зоряної активності.
  14. ^ "Проксима Центавра може бути домівкою для ще однієї землеподібної планети". www.old.nas.gov.ua (in Ukrainian). Retrieved 29 October 2024.
  15. ^ "New Tricks from Old Data: Texas Astronomer Uses 25-year-old Hubble Data to Confirm Planet Proxima Centauri c". McDonald Observatory. Retrieved 29 October 2024.
  16. ^ Pavlenko, Ya.; Kulyk, I.; Shubina, O.; Vasylenko, M.; Dobrycheva, D.; Korsun, P. (April 2022). "New exocomets of β Pic". Astronomy & Astrophysics. 660: A49. arXiv:2202.13373. Bibcode:2022A&A...660A..49P. doi:10.1051/0004-6361/202142111. ISSN 0004-6361.
  17. ^ Lewis, Briley. "Ukrainian Astronomers Discover 'Exocomets' around Another Star". Scientific American. Retrieved 28 October 2024.
  18. ^ Prostak, Sergio (18 April 2022). "Ukrainian Astronomers Spot Five New Exocomets around Beta Pictoris | Sci.News". Sci.News: Breaking Science News. Retrieved 28 October 2024.
  19. ^ "Prof. Yakiv Pavlenko (Main Astronomical Observatory – National Academy of Sciences of Ukraine)". Instituto de Astrofísica de Canarias. 1 September 2022. Retrieved 29 October 2024.
  20. ^ "Викладачі". mao.kiev.ua. Retrieved 29 October 2024. Дисципліни:"Еволюція зір і фізика зоряних атмосфер"
  21. ^ ВІДОМОСТІ про самооцінювання освітньої програми (In Ukrainian). Kyiv University, 5 October 2021.
  22. ^ "Кінематика і фізика..." mao.kiev.ua. Retrieved 29 October 2024.
  23. ^ "Editorial Board | Kinematics and physics of celestial bodies". kfnt.in.ua. ISSN 2663-7715. Retrieved 29 October 2024.
  24. ^ "Editorial boad | Kinematics and Physics of Celestial Bodies". www.allertonpress.com. ISSN 1934-8401. Retrieved 29 October 2024.
  25. ^ "Yakiv Pavlenko". scienceatrisk.org. 21 June 2023. Retrieved 28 October 2024.
  26. ^ Science at Risk!. "About us".
  27. ^ Yatskiv, Yaroslav (21 October 2024). "In Memoriam". MAO NANU (Obituary). Пам'яті Якова Володимировича ПАВЛЕНКА
  28. ^ "Вісник НАН України, 2010, № 7" (PDF). www.irbis-nbuv.gov.ua. Retrieved 28 October 2024.
  29. ^ "Павленко Яків Володимирович". nas.gov.ua (in Ukrainian). Retrieved 29 October 2024.
  30. ^ "Про присудження Державних премій України в галузі науки і техніки 2014 року". Офіційний вебпортал парламенту України (in Ukrainian). Retrieved 28 October 2024.
  31. ^ "Державні / Відомчі нагороди". mao.kiev.ua. Retrieved 29 October 2024.
  32. ^ "Basic Science Book Award". International Academy of Astronautics. 27 November 2019.
  33. ^ "IAA Basic Science Book Award". mao.kiev.ua. Retrieved 29 October 2024.
  34. ^ "Dark energy and dark matter in the Universe : in three volumes". old.nas.gov.ua. Retrieved 29 October 2024.
  35. ^ Shulga Valery, Zhdanov Valery, Alexandrov Alexander, Berczik Peter, Pavlenko Elena, Pavlenko Yakiv, Pilyugin Leonid, Tsvetkova Viktoria. Shulga, V.M.; Zhdanov, V.І.; Alexandrov, А.N. (2014). Dark matter: Astrophysical aspects of the problem ( volume 2, in three volumes Dark energy and dark matter in the Universe) (PDF). doi:10.15407/akademperiodyka.253.356. ISBN 978-966-360-253-0.
  36. ^ "Міжнародна академія астронавтики нагородила українських учених за найкращу книгу в галузі фундаментальних наук". www.old.nas.gov.ua (in Ukrainian). Retrieved 29 October 2024.
  37. ^ "Українське видання стало «Найкращою книгою в галузі фундаментальних наук»". Читомо (in Ukrainian). 19 December 2016. Retrieved 29 October 2024.
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External image
  Yakiv Pavlenko during his stay at the Instituto de Astrofísica de Canarias (IAC) (Fall 2022)
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