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Luigi Rolly Bedin

Luigi Rolly Bedin
Bedin I spheroidal dwarf galaxy hidden behind NGC 6752
EducationUniversity of California, Berkeley, Ph.D. in Astronomy and Astrophysics from the University of Padova
Occupation(s)Stellar populations in open and globular clusters, exoplanets and nearby brown dwarfs

Luigi Rolly Bedin (born July 16, 1973 in Padua), is an Italian astrophysicist and researcher at the National Institute of Astrophysics of the Padua Astronomical Observatory. His research focuses on stellar populations in open and globular clusters, exoplanets and nearby brown dwarfs. He is the discoverer with his team of the dwarf spheroidal galaxy Bedin I. He is a member of the International Astronomical Union.

Biography

Training

Luigi Rolly Bedin was born in 1973 in Padua. He obtained a master's degree in astronomy in 1999 at the University of Padua. He was awarded at the same University of Padova with a PhD in astronomy from a doctorate in 2003. His PhD thesis mainly carried out at the department of physics and astronomy of the University of California, Berkeley (UCB) under the direction of Professor Ivan R King.[1]

Associate researcher in the astronomy department of UCB, between 2000 and 2002,[1] he has since continued his scientific collaboration with researchers from several American institutes (UCB, UCLA,[2] University of Washington,[3] STScl.[4]) on various topics concerning globular clusters.

In 2003, he was a fellow at the European Southern Observatory in Garching.[5]

Professional career

From 2004 to 2007, Bedin was associate researcher at the European Southern Observatory in Garching.[6][7][8]

From 2007 to July 15, 2011, he was an astronomer in the instrumental division of the Baltimore Space Telescope Science Institute. He shares his work between scientific activities and functional tasks for the institute and for the Hubble Space Telescope Observatory (calibration, user support, maintenance missions and support of the institute in general).[9]

Since July 18, 2011, he has held a full-time scientific position at the National Institute of Astrophysics of the Astronomical Observatory of Padua.[10]

Luigi R. Bedin, principal investigator of major HST programs[11] is also leader of several observation projects for the world's main installations : HST, ESO/VLT,[12] LBT and the James Webb Space Telescope (JWST).[13][14]

Research

His main scientific research concerns stellar populations in open and globular clusters, neighboring dwarf galaxies, the dynamics of globular clusters and cosmic distance scales. Since 2019 he has also worked on the search and characterization of exoplanets and nearby brown dwarfs, such as Luhman 16.[15][16]

Waltz of the brown dwarfs Luhman16

He discovered, with his team, an isolated dwarf spheroidal galaxy as old as the universe hidden in NGC 6752. The discovery is published in international media in 2019. The galaxy bears his name : Bedin I.[17]

Bedin I Galaxy imaged by the Hubble Space Telescope

Luigi R. Bedin is an active member of divisions A, B, F, G of the International Astronomical Union:[10]

Luigi Bedin astronomer defends the innovations of new telescopes and satellites such as Starlink to promote access to space.[18]

He studies the rotation axis of comet 19P/Borrelly.[19]

Research in astrometry and photometry from space with HST is enriched with JWST : calibration and instrumentation, extrasolar planets, clusters of globules.[20]

He is co-author of a study on intermediate black holes with the discovery of a homogeneous dark mass of around 800 M ☉ corresponding to an intermediate mass black hole at the center of the cluster closest to Earth, the globular cluster Messier 4.[21]

In 2024, from JWST imaging of the nearest globular clusters, it detected excess infrared emission among white dwarfs in NGC 6397, a potential indication of destroyed ancient planetary systems and possible insights into the properties of the dense hydrogen atmosphere of these white dwarfs.[22]

NGC6397 region double observation HST and JWST [23]

Tribute

2018 : The dwarf galaxy Bedin I discovered with his team.[24]

Publications

He has published in several specialized journals such as ApJ,[25] AJ, MNRAS,[26] Nature[27] and A&A,[28] more than 210 peer-reviewed research articles accepted by international reading committees.[29][30]

Notes and references

  1. ^ a b "Physics Tree - Ivan R. King". academictree.org. Retrieved 2022-01-10.
  2. ^ "Improving Galactic Center Astrometry by Reducing the Effects of Geometric Distortion" (PDF)..
  3. ^ "Star birth goes boom, boom, boom: Three generations of stars form early in globular cluster's life". UW News. Retrieved 2022-01-10.
  4. ^ "What's My Age? Mystery Star Cluster Has 3 Different Birthdays". ScienceDaily. 11 July 2008. Retrieved 2022-01-10.
  5. ^ "Information ESO Garching". aminer.org. Retrieved 2022-01-11.
  6. ^ "ESO - Former and current ESO Fellows in Garching". eso.org. Retrieved 2022-01-10.
  7. ^ "Personnel Movements" (PDF). ESO. 2007.
  8. ^ European Southern Observatory. "Hubblecast 04: Hubble Finds Multiple Stellar 'Baby Booms' in a Globular Cluster". Retrieved 2022-01-11.
  9. ^ "Google Scholar". scholar.google.fr. Retrieved 2022-01-10.
  10. ^ a b "International Astronomical Union | IAU". iau.org. Retrieved 2022-01-10.
  11. ^ "Program Information". STScI.edu. Retrieved 2022-01-12. HST Programs With PI Last Name Similar To: bedin =
    16653 - Luigi Bedin astrometric signature of a Second Planet in Proxima
    15884 - Luigi Bedin Confirmation of an Astrometrically Detected Exoplanet Candidate Orbiting the closest Brown Dwarfs
    15491 - Luigi Bedin The end of the White Dwarf Cooling Sequence of NGC 6752
    15096 - Luigi Bedin The end of the White Dwarf Cooling Sequence of NGC 6752
    14662 - Luigi Bedin The end of the White Dwarf Cooling Sequences of Omega Centauri
    14330 - Luigi Bedin Astrometric search for Planets in the closest Brown Dwarf Binary system Luhman 16AB
    14118 - Luigi Bedin The end of the White Dwarf Cooling Sequences of Omega Centauri
    13748 - Luigi Bedin Astrometric search for Planets in the closest Brown Dwarf Binary system Luhman 16AB
    12911 - Luigi Bedin A search for binaries with massive companions in the core of the closest globular cluster M4
    12669 - Luigi Bedin Exploring the Bottom End of the White Dwarf Cooling Sequence in the Open Cluster NGC6819
    11688 - Luigi Bedin Exploring the Bottom End of the White Dwarf Cooling Sequence in the Open Cluster NGC6819
    10500 - Luigi Bedin Exploring the Bottom End of the White Dwarf Cooling Sequence in the Galactic Open Cluster NGC2158
    10146 - Luigi Bedin Solving the problem of the White Dwarf Cooling Sequence End in M4: an efficent approach
  12. ^ "INSPIRE". inspirehep.net. Retrieved 2022-01-12.
  13. ^ "Program Information". STScI.edu. Retrieved 2022-01-12.
  14. ^ Nichole (7 June 2024). "À la chasse aux naines blanches et aux planètes détruites avec Jwst". Press Italy 24 French.
  15. ^ "L'étoile ratée la plus proche serait striée de nuages comme Jupiter". Ciel & Espace (in French). Retrieved 2022-01-10..
  16. ^ Galliani, Marco (2017-06-01). "Due nane brune per Hubble". MEDIA INAF (in Italian). Retrieved 2022-01-15. L'extraordinaire proximité de ce système en fait un laboratoire idéal pour étudier les propriétés des naines brunes, en particulier leurs atmosphères, l'évolution de leur température de surface, la nature binaire du système lui-même, et la présence éventuelle d'exoplanètes autour d'elles. Précisément sur ce dernier point Luigi Bedin, astronome de l'Institut national d'astrophysique (INAF) à l'Observatoire astronomique de Padoue, a récemment obtenu l'opportunité d'observer le système Luhman 16 avec le télescope spatial Hubble.
  17. ^ Inaf, Ufficio stampa (2019-01-31). "Tana per la galassia dietro l'ammasso stellare". MEDIA INAF (in Italian). Retrieved 2022-01-10.
  18. ^ "Le nuove costellazioni nel cielo sono una cosa molto MOLTO positiva per tutti! | Società Astronomica Italiana". sait.it. Retrieved 2022-01-11.
  19. ^ Oldani, Virginio; Manzini, Federico; Ochner, Paolo; Reguitti, Andrea; Bedin, Luigi R.; Behrend, Raoul; Bosch, Jean Gabriel (2023). "Comet 19/P Borrelly in 2021–22: Change in the spin axis orientation versus previous apparitions". Icarus. 395. Icarus. Bibcode:2023Icar..39515451O. doi:10.1016/j.icarus.2023.115451.
  20. ^ Università di Padova (2022). "Cognome Nome Istituto Argomenti" (PDF). astronomia.dfa.unipd.it (in Italian).
  21. ^ Giannace, Daniela (2023-05-24). "Buco nero di massa intermedia: nuova scoperta nell'ammasso stellare M4". Lega Nerd (in Italian). Retrieved 2023-05-24.
  22. ^ Bedin, L. R.; Nardiello, D.; Salaris, M.; Libralato, M. (2024-05-27). "JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397". Astronomische Nachrichten. doi:10.1002/asna.20240039. ISSN 0004-6337. Retrieved 2024-06-08.
  23. ^ Inaf, Ufficio stampa (2024-06-07). "A caccia di nane bianche e pianeti distrutti con Jwst". MEDIA INAF (in Italian). Retrieved 2024-06-21.
  24. ^ Jerome (2019-02-03). "Les astronomes découvrent une nouvelle et très ancienne galaxie proche de la nôtre - Mediacritik". mediacritik.com (in French). Retrieved 2022-01-10..
  25. ^ Bedin, Luigi R.; King, Ivan R.; Anderson, Jay; Piotto, Giampaolo (2008-05-10). "Reaching the End of the White Dwarf Cooling Sequence in NGC 6791*". The Astrophysical Journal. 678 (2): 1279. arXiv:0801.1346. Bibcode:2008ApJ...678.1279B. doi:10.1086/529370. ISSN 0004-637X. Retrieved 2022-01-11.
  26. ^ "Multiple stellar populations in Magellanic Cloud clusters – III. The first evidence of an extended main sequence turn-off in a young cluster: NGC 1856". academic.oup.com.
  27. ^ Chen, Jianxing; Ferraro, Francesco R.; Cadelano, Mario; Salaris, Maurizio (November 2021). "Slowly cooling white dwarfs in M13 from stable hydrogen burning". Nature Astronomy. 5 (11): 1170–1177. arXiv:2109.02306. Bibcode:2021NatAs...5.1170C. doi:10.1038/s41550-021-01445-6. ISSN 2397-3366. Retrieved 2022-01-11.
  28. ^ Bellini, A.; Bedin, L. R.; Pichardo, B.; Moreno, E. (2010-04-01). "Absolute proper motion of the Galactic open cluster M 67". Astronomy & Astrophysics. 513: A51. arXiv:1005.0840. Bibcode:2010A&A...513A..51B. doi:10.1051/0004-6361/200913882. ISSN 0004-6361. Retrieved 2022-01-11.
  29. ^ "NASA/ADS". ui.adsabs.harvard.edu. Retrieved 2022-01-10.
  30. ^ "The Astrophysical Journal". mindat.org. Retrieved 2022-01-10.
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