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The evolution and instability strip of hot subdwarfs in two old open clusters

2017/25/B/ST9/02218

Keywords

Descriptors

  • ST9_4: Powstawanie gwiazd i planet
  • ST9_7: Gwiazdy i układy gwiazdowe

Panel

ST9 – Astronomy and space science: astrophysics, astrochemistry, astrobiology, solar system, planetary systems, stellar, galactic and extragalactic astronomy, space science, instrumentation

Host institution

Uniwersytet Warszawski, Wydział Fizyki;

Voivodeship: mazowieckie

Other projects carried out by the institution »

Principal investigator (from the host institution)

dr hab. Andrzej Sławomir Baran

Number of co-investigators in the project: 4

Call

OPUS 13 – announced on 2017-03-15

Amount awarded
622 780 PLN
Project start date
2018-08-31
Project end date
2023-08-30
Project duration
60 months (the same as in the proposal)
Project status
Project settled

Project description

Download the project description in a pdf file

Note — project descriptions were prepared by the authors of the applications themselves and placed in the system in an unchanged form.

Equipment purchased [PL]

  1. komputery z systemami operacyjnymi i oprogramowaniem. Cost: 52 000 PLN

Information in the final report

Publication in academic press/journals (26)

  1. TESS photometry of the pulsating hot subdwarf star V585 Peg

    Authors:
    Reed, M. D. ; Baran, A. S. ; Telting, J. H. ; Østensen, R. H.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2023, volume: 525, pages: 1342-1352), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stad2392 – link to the publication

  2. Filling the gap between synchronized and non-synchronized sdBs in short-period sdBV+dM binaries with TESS: TIC 137608661, a new system with a well-defined rotational splitting

    Authors:
    Silvotti, Roberto; Németh, Péter; Telting, John H. ; Baran, Andrzej S.; Østensen, Roy H. ; Ostrowski, Jakub ; Sahoo, Sumanta K.; Prins, Saskia
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2022, volume: 511, pages: 2201-2217), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac160 – link to the publication

  3. Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS. III. Asteroseismology of the DBV star GD 358

    Authors:
    Córsico, A. H. ; Uzundag, M. search by orcid ; Kepler, S. O. ; Silvotti, R. search by orcid ; Althaus, L. G. ; Koester, D. ; Baran, A. S. ; Bell, K. J. ; Bischoff-Kim, A. search by orcid ; Hermes, J. J. ; Kawaler, S. D. ; Provencal, J. L. ; Winget, D. E. ; Montgomery, M. H. ; Bradley, P. A. ; Kleinman, S. J. ; Nitta, A.
    Academic press:
    Astronomy & Astrophysics (year: 2022, volume: 659, pages: 30-42), Publisher: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202142153 – link to the publication

  4. Variable Star Population in the Open Cluster NGC 6819 Observed by the Kepler Spacecraft

    Authors:
    Sanjayan, S. ; Baran, A. S. ; Németh, P. ; Kinemuchi, K.
    Academic press:
    Acta Astronomica (year: 2022, volume: 72, pages: 267-295), Publisher: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/72.4.3 – link to the publication

  5. Asteroseismic analysis of variable hot subdwarf stars observed with TESS. I. The mean g-mode period spacings in hot subdwarf B stars

    Authors:
    Uzundag, Murat; Vučković, Maja ; Németh, Péter ; Miller Bertolami, M. ; Silvotti, Roberto ; Baran, Andrzej S. ; Telting, John H. ; Reed, Mike ; Shoaf, K. A. ; Østensen, Roy H. ; Sahoo, Sumanta K.
    Academic press:
    Astronomy & Astrophysics (year: 2021, volume: 651, pages: 121-139), Publisher: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202140961 – link to the publication

  6. Pulsating subdwarf B stars observed with K2 during Campaign 7 and an examination of seismic group properties

    Authors:
    Reed, M. D.; Slayton, A. ; Baran, A. S.; Telting, J. H. ; Østensen, R. H. ; Jeffery, C. S.; Uzundag, M. ; Sanjayan, S.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2021, volume: 507, pages: 4178-4195), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab2405 – link to the publication

  7. Sounding Interiors of Four Pulsating Subdwarf B Stars with Stellar Pulsations

    Authors:
    Baran, A. ; Sanjayan, S.
    Academic press:
    Acta Astronomica (year: 2023, volume: 73, pages: 21-34), Publisher: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/73.1.2 – link to the publication

  8. TESS first look at evolved compact pulsators Discovery and asteroseismic probing of the g-mode hot B subdwarf pulsator EC 21494−7018

    Authors:
    S. Charpinet, P. Brassard, G. Fontaine, V. Van Grootel, W. Zong, N. Giammichele, U. Heber, Zs. Bognár, S. Geier, E. M. Green, J. J. Hermes, D. Kilkenny, R. H. Østensen, I. Pelisoli, R. Silvotti, J. H. Telting, M. Vučković, H. L. Worters, A. S. Baran, K. J. Bell, P. A. Bradley, J. H. Debes, S. D. Kawaler, P. Kołaczek-Szymański, S. J. Murphy, A. Pigulski, À. Sódor, M. Uzundag, R. Handberg, H. Kjeldsen, G. R. Ricker and R. K. Vanderspek
    Academic press:
    Astronomy & Astrophysics (year: 2019, volume: 632, pages: 90-112), Publisher: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/201935395 – link to the publication

  9. K2 observations of the pulsating subdwarf B stars UY Sex and V1405 Ori

    Authors:
    M D Reed, M Yeager, J Vos, J H Telting, R H Østensen, A Slayton, A S Baran, C S Jeffery
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2020, volume: 492, pages: 5202-5217), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa144 – link to the publication

  10. A search for variable subdwarf B stars in TESS Full Frame Images III. An update on variable targets in both ecliptic hemispheres - contamination analysis and new sdB pulsators

    Authors:
    Sahoo, S. K. ; Baran, A. S. ; Worters, H. L. ; Németh, P. ; Kilkenny, D.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2023, volume: 519, pages: 2486-2499), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac3676 – link to the publication

  11. Variable Blue Straggler Stars in the Open Cluster NGC 6819 Observed in the Kepler Superstamp Field

    Authors:
    Guzik, Joyce A. ; Baran, Andrzej S. ; Sanjayan, Sachu ; Németh, Péter ; Hedlund, Anne M. ; Jackiewicz, Jason ; Dauelsberg, Lori R.
    Academic press:
    The Astronomical Journal (year: 2023, volume: 165, pages: 188-202), Publisher: IOP Publishing
    Status:
    Published
    DOI:
    10.3847/1538-3881/acc0f0 – link to the publication

  12. K2 observations of the sdBV + dM/bd binaries PHL 457 and EQ Psc

    Authors:
    A S Baran, J H Telting, C S Jeffery, R H Østensen, J Vos, M D Reed, M Vŭckov
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2019, volume: 489, pages: 1556-1571), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stz2209 – link to the publication

  13. High-degree gravity modes in the single sdB star HD 4539

    Authors:
    R Silvotti, M Uzundag, A S Baran, R H Østensen, J H Telting, U Heber, M D Reed, M Vŭcković
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2019, volume: 489, pages: 4791-4801), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stz2244 – link to the publication

  14. Mode identification in three pulsating hot subdwarfs observed with TESS satellite

    Authors:
    Sahoo, S. K.; Baran, A. S.; Heber, U.; Ostrowski, J.; Sanjayan, S.; Silvotti, R.; Irrgang, A.; Uzundag, M.; Reed, M. D.; Shoaf, K. A.; Raddi, R.; Vuckovic, M.; Ghasemi, H.; Zong, W.; Bell, K. J.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2020, volume: 495, pages: 2844-2857), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa1337 – link to the publication

  15. Alone but not lonely: Observational evidence that binary interaction is always required to form hot subdwarf stars

    Authors:
    Ingrid Pelisoli, Joris Vos, Stephan Geier, Veronika Schaffenroth and Andrzej S. Baran
    Academic press:
    Astronomy & Astrophysics (year: 2020, volume: 642, pages: 180-193), Publisher: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202038473 – link to the publication

  16. Discovery and analysis of three magnetic hot subdwarf stars: evidence for merger-induced magnetic fields

    Authors:
    Pelisoli Ingrid, Dorsch M., Heber U., Gänsicke B., Geier S., Kupfer T., Németh P., Scaringi S., Schaffenroth V.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2022, volume: 515, pages: 2496-2510), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac1069 – link to the publication

  17. Variable Star Population in the Open Cluster NGC 6791 Observed by the Kepler Spacecraft

    Authors:
    Sanjayan S., Baran A.S., Németh P., Kinemuchi K., Ostrowski J., Sahoo S.K.
    Academic press:
    Acta Astronomica (year: 2022, volume: 72, pages: 77-102), Publisher: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/72.2.1 – link to the publication

  18. A search for variable subdwarf B stars in TESS Full Frame Images - II. Variable objects in the northern ecliptic hemisphere

    Authors:
    Baran, A. S.; Sahoo, S. K.; Sanjayan, S.; Ostrowski, J.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2021, volume: 503, pages: 3828-3847), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab668 – link to the publication

  19. Pulsating subdwarf B stars in the oldest open cluster NGC 6791

    Authors:
    Sanjayan S., Baran A.S., Ostrowski J., Németh P., Pelisoli I., Østensen R., Kern J.W., Reed M.D. Sahoo S.K.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2022, volume: 509, pages: 763-777), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab2985 – link to the publication

  20. Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS I. Asteroseismology of the GW Vir stars RX J2117+3412, HS 2324+3944, NGC 6905, NGC 1501, NGC 2371, and K 1−16

    Authors:
    Córsico A.H., Uzundag M., Kepler S.O., Althaus L.G., Silvotti R., Baran A.S., Vučković M., Werner K., Bell K.J., Higgins M.
    Academic press:
    Astronomy & Astrophysics (year: 2021, volume: 645, pages: 117-149), Publisher: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202039202 – link to the publication

  21. PHL 417: a zirconium-rich pulsating hot subdwarf (V366 Aquarid) discovered in K2 data

    Authors:
    R H Østensen, C S Jeffery, H Saio, J J Hermes, J H Telting, M Vučković, J Vos, A S Baran, M D Reed
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2020, volume: 499, pages: 3738-3748), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa3123 – link to the publication

  22. A search for variable subdwarf B stars in TESS full frame images – I. Variable objects in the southern ecliptic hemisphere

    Authors:
    S K Sahoo, A S Baran, S Sanjayan, J Ostrowski
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2020, volume: 499, pages: 5508-5526), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa2991 – link to the publication

  23. Space observations of AA Doradus provide consistent mass determinations. New HW-Vir systems observed with TESS

    Authors:
    Baran, A. S.; Østensen, R. H. ; Heber, U. ; Irrgang, A.; Sanjayan, S.; Telting, J. H. ; Reed, M. D.; Ostrowski, J.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2021, volume: 503, pages: 2157-2167), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab620 – link to the publication

  24. A Roche lobe-filling hot subdwarf and white dwarf binary: possible detection of an ejected common envelope

    Authors:
    Li Jiangdan, Onken Christopher A., Wolf Christian, Németh Péter, Bessell Mike, Li Zhenwei, Zhang Xiaobin, Li Jiao, Wang Luqian, Li Lifang, Luo Yangping, Chen Hailiang, Ji Kaifan, Chen Xuefei, Han Zhanwen
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2022, volume: 515, pages: 3370-3382), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac1768 – link to the publication

  25. Evolutionary modelling of subdwarf B stars using MESA with the predictive mixing and convective pre-mixing schemes

    Authors:
    Ostrowski, J. ; Baran, A. S.; Sanjayan, S.; Sahoo, S. K.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (year: 2021, volume: 503, pages: 4646-4661), Publisher: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa3751 – link to the publication

  26. A Detection Threshold in the Amplitude Spectra Calculated from TESS Time-Series Data

    Authors:
    Baran, A. S. ; Koen, C.
    Academic press:
    Acta Astronomica (year: 2021, volume: 71, pages: 113-121), Publisher: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/71.2.3 – link to the publication

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Graphic design and implementation: Jakub Piotrowski