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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Demystifying hot subdwarf B stars using Kepler, TESS and GAIA space data.

2017/26/E/ST9/00703

Keywords:

hot subdwarfs pulsations asteroseismology stellar evolution

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, Obserwatorium Astronomiczne

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: 6

Call: SONATA BIS 7 - announced on 2017-06-14

Amount awarded: 1 918 600 PLN

Project start date (Y-m-d): 2018-09-03

Project end date (Y-m-d): 2024-09-02

Project duration:: 48 months (the same as in the proposal)

Project status: Project completed

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.

Information in the final report

  • Publication in academic press/journals (36)
  1. 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
  2. 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
  3. 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
  4. TESS first look at evolved compact pulsators. Asteroseismology of the pulsating helium-atmosphere white dwarf TIC 257459955
    Authors:
    Bell, Keaton J.; Córsico, Alejandro H.; Bischoff-Kim, Agnès; Althaus, Leandro G.; Bradley, Paul A.; Calcaferro, Leila M.; Montgomery, Michael H.; Uzundag, Murat; Baran, Andrzej S.; Bognár, Zsófia; Charpinet, Stéphane; Ghasemi, Hamed; Hermes, J. J.
    Academic press:
    Astronomy and Astrophysics (rok: 2019, tom: 632, strony: 42-53), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/201936340 - link to the publication
  5. TESS first look at evolved compact pulsators. Discovery and asteroseismic probing of the g-mode hot B subdwarf pulsator EC 21494-7018
    Authors:
    Charpinet, S.; Brassard, P.; Fontaine, G.; Van Grootel, V.; Zong, W.; Giammichele, N.; Heber, U.; Bognár, Zs.; Geier, S.; Green, E. M.; Hermes, J. J.; Kilkenny, D.; Østensen, R. H.; Pelisoli, I.; Silvotti, R.; Telting, J. H.; Vučković, M.; Worters, H. L.; Baran, A. S.; Bell, K. J. Bradley, P. A.; Debes, J. H.; Kawaler, S. D.; Kołaczek-Szymański, P.; Murphy, S. J.; Pigulski, A.; Sódor, À.; Uzundag, M.; Handberg, R.; Kjeldsen, H.; Ricker, G. R.; Vanderspek, R. K.
    Academic press:
    Astronomy and Astrophysics (rok: 2019, tom: 632, strony: 90-112), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/201935395 - link to the publication
  6. 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
  7. About the existence of warm H-rich pulsating white dwarfs
    Authors:
    Leandro G. Althaus, Alejandro H. Córsico, Murat Uzundag, Maja Vučković, Andrzej S. Baran, Keaton J. Bell, María E. Camisassa, Leila M. Calcaferro, Francisco C. De Gerónimo, Souza Oliveira Kepler and Roberto Silvotti
    Academic press:
    Astronomy & Astrophysics (rok: 2020, tom: 633, strony: 20-32), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/201936346 - link to the publication
  8. 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
  9. Mode identification in three pulsating hot subdwarfs observed with TESS satellite
    Authors:
    S K Sahoo, A S Baran, U Heber, J Ostrowski, S Sanjayan, R Silvotti, A Irrgang, M Uzundag, M D Reed, K A Shoaf, R Raddi, M Vuckovic, H Ghasemi, W Zong, K J Bell
    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
  10. 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
  11. Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS III. Asteroseismology of the DBV star GD 358
    Authors:
    A.H. Córsico, M. Uzundag, S.O. Kepler, R. Silvotti, L.G. Althaus, D. Koester, A.S. Baran, K.J. Bell,⋆, A. Bischoff-Kim, J.J. Hermes, S.D. Kawaler, J.L. Provencal, D.E. Winget, M.H. Montgomery, P.A. Bradley, S.J. Kleinman, and A. Nitta
    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
  12. 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
  13. Pulsations and eclipse-time analysis of HW Vir
    Authors:
    Baran, A. S.; Østensen, R. H.; Telting, J. H.; Vos, J.; Kilkenny, D.; Vučković, M.; Reed, M. D.; Silvotti, R.; Jeffery, C. S.; Parsons, S. G.; Dhillon, V. S.; Marsh, T. R.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (rok: 2018, tom: 481, strony: 2721-2735), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/sty2473 - link to the publication
  14. 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
  15. An eclipsing 47 min double white dwarf binary at 400 pc
    Authors:
    Munday J., Tremblay P.-E., Hermes J.J., Barlow B., Pelisoli I., Marsh T.R., Parsons S.G., Jones D., Kepler S.O., Brown A., Littlefair S.P., Hegedus R., Baran A., Breedt E., Dhillon V.S., Dyer M.J., Green M.J., Kennedy M.R., Kerry P., Lopez I.D., Romero A.D., Sahman D., Worters H.L.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (rok: 2023, tom: 525, strony: 1814-1823), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stad2347 - link to the publication
  16. Detection of a Planet in 2M1938+4603 Revisited
    Authors:
    Andrzej S. Baran and Roberto Silvotti
    Academic press:
    Research Notes of the American Astronomical Society (rok: 2020, tom: 4, strony: 237-238), Wydawca: IOP Publishing
    Status:
    Published
    DOI:
    10.3847/2515-5172/abd31a - link to the publication
  17. 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
  18. Discovery of 74 new bright ZZ Ceti stars in the first three years of TESS
    Authors:
    Alejandra D. Romero, S.O. Kepler, J.J. Hermes, Larissa Antunes Amaral, Murat Uzundag, Zsofia Bognar, Keaton J. Bell, Madison VanWyngarden, Andy Baran, Ingrid Pelisoli, Gabriela da Rosa Oliveira, Detlev Koester, T.S. Klippel, Luciano Fraga, Paul A. Bradley, Maja Vuckovic, Tyler M. Heintz, Joshua S. Reding, B.C. Kaiser and Stephane Charpinet
    Academic press:
    Monthly Notices of the Royal Astronomical Society (rok: 2022, tom: 511, strony: 1574-1590), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/stac093 - link to the publication
  19. 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:
    Roberto Silvotti, Peter Nemeth, John H. Telting, Andrzej S. Baran, Roy H. Østensen, Jakub Ostrowski, Sumanta K. Sahoo, and Saskia Prins
    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
  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 (rok: 2021, tom: 645, strony: 117-149), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202039202 - link to the publication
  21. Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS V. Discovery of two new DBV pulsators, WDJ152738.4−450207.4 and WD 1708−871, and asteroseismology of the already known DBV stars PG 1351+489, EC 20058−5234, and EC 04207−4748
    Authors:
    A.H. Córsico, M. Uzundag, S.O. Kepler, L.G. Althaus, R. Silvotti, P.A. Bradley, A.S. Baran, D. Koester, K.J. Bell, A.D. Romero, J.J. Hermes, and N.P. Gentile Fusillo
    Academic press:
    Astronomy & Astrophysics (rok: 2022, tom: 668, strony: 161-182), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1051/0004-6361/202244198 - link to the publication
  22. TESS observations of pulsating subdwarf B stars: extraordinarily short-period gravity modes in CD−28° 1974
    Authors:
    M D Reed, K A Shoaf, P Németh, J Vos, M Uzundag, A S Baran, S K Sahoo, C S Jeffery, J H Telting, R H Østensen
    Academic press:
    Monthly Notices of the Royal Astronomical Society (rok: 2020, tom: 493, strony: 5162-5169), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/staa661 - link to the publication
  23. 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
  24. 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
  25. K2 observations of the sdBV + dM/bd binaries PHL 457 and EQ Psc
    Authors:
    Baran, A. S.; Telting, J. H.; Jeffery, C. S.; Østensen, R. H.; Vos, J.; Reed, M. D.; Vǔcković; , M.
    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
  26. New Variable Hot Subdwarf Stars Identified from Anomalous Gaia Flux Errors, Observed by TESS, and Classified via Fourier Diagnostics
    Authors:
    Barlow Brad N., Corcoran Kyle A., Parker Isabelle M., Kupfer Thomas, Németh Péter, Hermes J.J., Lopez Isaac D., Frondorf Will J., Vestal David, Holden Jazzmyn
    Academic press:
    The Astrophysical Journal (rok: 2022, tom: 928, strony: 20-41), Wydawca: IOP Publishing
    Status:
    Published
    DOI:
    10.3847/1538-4357/ac49f1 - link to the publication
  27. Short-period pulsating hot subdwarf stars observed by TESS. I. Southern ecliptic hemisphere
    Authors:
    Baran A.S., Van Grootel V., Østensen R.H., Worters H.L., Sahoo S.K., Sanjayan S., Charpinet S., Nemeth P., Telting J.H., Kilkenny D.
    Academic press:
    Astronomy and Astrophysics (rok: 2023, tom: 669, strony: 48-65), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202244888 - link to the publication
  28. TESS first look at evolved compact pulsators
    Authors:
    Zs. Bognár, S. D. Kawaler, K. J. Bell, C. Schrandt, A. S. Baran, P. A. Bradley, J. J. Hermes, S. Charpinet, G. Handler, S. E. Mullally, S. J. Murphy, R. Raddi, Á. Sódor, P.-E. Tremblay, M. Uzundag and W. Zong
    Academic press:
    Astronomy & Astrophysics (rok: 2020, tom: 638, strony: 82-101), Wydawca: EDP Sciences
    Status:
    Published
    DOI:
    10.1051/0004-6361/202037470 - link to the publication
  29. 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
  30. 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
  31. 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
  32. High-degree gravity modes in the single sdB star HD 4539
    Authors:
    Silvotti, R.; Uzundag, M.; Baran, A. S.; Østensen, R. H.; Telting, J. H.; Heber, U.; Reed, M. D.; Vǔcković, M.
    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
  33. 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
  34. 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
  35. Two p-mode-dominated subdwarf B pulsators in binaries with F-star companions observed with K2
    Authors:
    Reed, M. D.; Telting, J. H.; Ketzer, L.; Crooke, J. A.; Baran, A. S.; Vos, J.; Németh, P.; Østensen, R. H.; Jeffery, C. S.
    Academic press:
    Monthly Notices of the Royal Astronomical Society (rok: 2019, tom: 483, strony: 2282-2299), Wydawca: Oxford University Press
    Status:
    Published
    DOI:
    10.1093/mnras/sty3025 - link to the publication
  36. 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:
    Astronomical Journal (rok: 2023, tom: 165, strony: 188-203), Wydawca: IOP Publishing
    Status:
    Published
    DOI:
    10.3847/1538-3881/acc0f0 - link to the publication

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