Projects funded by the NCN

Information on the principal investigator and host institution

Information of the project and the call

Keywords

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

2017/25/B/ST9/02218

Keywords:

pulsations asteroseismology binary systems evolution hot subdwarfs EHB old open clusters

Descriptors:

  • ST9_4: Formation of stars and planets
  • ST9_7: Stars and stellar systems

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,

woj. mazowieckie

Other projects carried out by the institution 

Principal investigator (from the host institution):

dr hab. Andrzej 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 (Y-m-d): 2018-08-31

Project end date (Y-m-d): 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 (52 000 PLN)

Information in the final report

  • Publication in academic press/journals (26)
  1. 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 (rok: 2022, tom: 515, strony: 3370-3382), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac1768 - 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 (rok: 2022, tom: 511, strony: 2201-2217), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac160 - link to the publication
  3. 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 (rok: 2019, tom: 489, strony: 4791-4801), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stz2244 - link to the publication
  4. 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 (rok: 2020, tom: 499, strony: 3738-3748), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa3123 - link to the publication
  5. A Detection Threshold in the Amplitude Spectra Calculated from TESS Time-Series Data
    Authors:
    Baran, A. S. ; Koen, C.
    Academic press:
    Acta Astronomica (rok: 2021, tom: 71, strony: 113-121), Wydawca: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/71.2.3 - link to the publication
  6. 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 (rok: 2020, tom: 642, strony: 180-193), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202038473 - link to the publication
  7. 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 (rok: 2021, tom: 645, strony: 117-149), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202039202 - link to the publication
  8. 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 (rok: 2023, tom: 165, strony: 188-202), Wydawca: IOP Publishing
    Status:
    Published
    DOI:
    10.3847/1538-3881/acc0f0 - link to the publication
  9. 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 (rok: 2019, tom: 489, strony: 1556-1571), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stz2209 - link to the publication
  10. 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 (rok: 2021, tom: 507, strony: 4178-4195), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab2405 - link to the publication
  11. 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 (rok: 2019, tom: 632, strony: 90-112), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/201935395 - link to the publication
  12. 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 (rok: 2022, tom: 72, strony: 77-102), Wydawca: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/72.2.1 - link to the publication
  13. 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 (rok: 2022, tom: 72, strony: 267-295), Wydawca: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/72.4.3 - link to the publication
  14. 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 (rok: 2023, tom: 519, strony: 2486-2499), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac3676 - link to the publication
  15. 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 (rok: 2020, tom: 499, strony: 5508-5526), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa2991 - 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 (rok: 2022, tom: 515, strony: 2496-2510), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac1069 - link to the publication
  17. 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 (rok: 2020, tom: 492, strony: 5202-5217), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa144 - link to the publication
  18. 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 (rok: 2020, tom: 495, strony: 2844-2857), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa1337 - link to the publication
  19. 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 (rok: 2022, tom: 659, strony: 30-42), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202142153 - link to the publication
  20. 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 (rok: 2022, tom: 509, strony: 763-777), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab2985 - link to the publication
  21. 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 (rok: 2021, tom: 503, strony: 2157-2167), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab620 - link to the publication
  22. 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 (rok: 2021, tom: 503, strony: 3828-3847), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stab668 - link to the publication
  23. 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 (rok: 2021, tom: 651, strony: 121-139), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202140961 - link to the publication
  24. 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 (rok: 2021, tom: 503, strony: 4646-4661), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa3751 - link to the publication
  25. Sounding Interiors of Four Pulsating Subdwarf B Stars with Stellar Pulsations
    Authors:
    Baran, A. ; Sanjayan, S.
    Academic press:
    Acta Astronomica (rok: 2023, tom: 73, strony: 21-34), Wydawca: Copernicus Foundation For Polish Astronomy
    Status:
    Published
    DOI:
    10.32023/0001-5237/73.1.2 - link to the publication
  26. 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 (rok: 2023, tom: 525, strony: 1342-1352), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stad2392 - link to the publication

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