Stellar-shenanigans

Publications

Here is a link to my ADS library

Publication metrics:

h-index: 25 (ADS) / 25 (Google scholar)
Citations: 2024 (ADS) / 1924 (Google scholar)

Press releases:

BlackGEM first light

First Author:

  1. Johnston C., Gotberg Y. & Townsend R.H.D., ‘Predicting the pulsation properties of massive stars with envelopes stripped via binary interaction: Adiabatic mode properties, pulsation patterns, and consequences for observations‘, A&A, in prep.
  2. Johnston C., et al., ‘Multi-colour amplitude ratios and phase differences for asteroseismology from combined ground- and space-based telescopes‘, A&A, in review.
  3. Johnston C., et al., ‘Modelling time-dependent convective penetration in 1D stellar evolution‘, ApJ, vol. 964 (2),170 (2024)
  4. Johnston C., et al., ‘Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U Gru‘, A&A, vol. 670, A167, 13 pp. (2023)
  5. Johnston C., ‘One size does not fit all: Evidence for a range of mixing efficiencies in stellar evolution calculations’, A&A, vol. 655, A29, 6 pp. (2021)
  6. Johnston C., ‘Interior Modelling of Massive Stars in Multiple Systems’. Springer Nature (2021)
  7. Johnston C., et al., ‘Characterization of the variability in the O+B eclipsing binary HD 165246’, MNRAS, vol. 503 (1), 1124J (2021)
  8. Johnston C., et al.,  ‘Isochrone-cloud fitting of the extended main-sequence turn-off of young clusters’, A&A, vol. 632, A74 (2019)
  9. Johnston C., et al., ‘Modelling of the B-type binaries CW Cephei and U Ophiuchi. A critical view on dynamical masses, core boundary mixing, and core mass’, A&A, vol. 628, A25 (2019)
  10. Johnston C., et al.,  ‘Binary asteroseismic modelling: isochrone-cloud methodology and application to Kepler gravity mode pulsators’, MNRAS, vol. 482 (1), 1231J (2019)
  11. Johnston C., et al, ‘Detection of intrinsic variability in the eclipsing massive main-sequence O+B binary HD165246’, MNRAS:Letters, vol. 469 (1), L118 (2017)

** denote papers led by students under my supervision

Significant contributing author:

  1. Stegmann J., Eisner N., Johnston C., ‘Circumstellar planets in close binaries on the verge of ejection/destruction/on retrograde orbits‘, Nature, in prep.
  2. ** Ranaivomanana P, Uzundag M., Johnston C., et al., ‘Variability of hot sub-luminous stars and binaries: Machine learning analysis of Gaia DR3 multi-epoch photometry‘, A&A, submitted
  3. Ghasemi H., Uzundag M., Johnston C., Aerts C., ‘Discerning internal conditions of pulsating hot subdwarf B stars: Modelling multiple trapped modes in KIC 10001893‘, A&A, submitted
  4. ** IJspeert L.W., Tkachenko A., Johnston C., et al., ‘Statistical view of orbital circularisation with 14,000 characterised TESS eclipsing binaries‘, A&A, accepted
  5. ** Wagg T., Johnston C., et al., ‘The asteroseismic imprints of mass transfer‘, A&A, vol. 687, A222, 14 pp. (2024)
  6. Stoppa F., Johnston C., et al., ‘FINKER: Frequency Identification through Nonparametric KErnel Regression in astronomical time series‘, A&A, vol. 686, A158, 16 pp. (2024)
  7. ** IJspeert L., Tkachenko A., Johnston C., ‘Automated eccentricity measurement from raw eclipsing binary light curves with intrinsic variability‘, A&A, vol. 685, A62, 41 pp. (2024)
  8. ** Ma L., Johnston C., et al., ‘Time variability in Blue supergiants with TESS‘, ApJ, vol. 966 (2), 196, 12 pp. (2024)
  9. ** Ranaivomanana P., Johnston C., et al., ‘Identifying and characterising the population of hot sub-luminous stars with multi-colour MeerLICHT data‘, A&A, vol. 672, A69, 24 pp. (2023)
  10. Van Reeth T., Johnston C., et al., ‘Tidally perturbed g-mode pulsations in a sample of close eclipsing binaries‘, A&A, vol. 671, A121 (2023)
  11. Eisner N., Johnston C., et al., ‘Planet Hunters TESS IV: A massive, compact hierarchical triple star system TIC 470710327’, MNRAS,  vol. 511 (4), 4710E (2022)
  12. ** IJspeert L. W., Tkachenko A., Johnston C., et al., ‘An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries observed by TESS’, A&A, vol. 652, A120, 19 pp. (2021)
  13. Koen C., Johnston C., ‘Rotational Variation in the chemically peculiar B0 star 𝜃 Car as seen by TESS’, MNRAS, vol. 505 (1), 5725K (2021)
  14. Sekaran S., Tkachenko A., Johnston C., Aerts C., ‘A comparison of the dynamical and model-derived parameters of the pulsating eclipsing binary KIC9850387’, A&A, vol. 648, A91, 19 pp. (2021)
  15. Stassun K., Torres G., Johnston C., et al., ‘Discovery and Characterization of a Rare Magnetic Hybrid β-Cephei Slowly Pulsating B-type Star in an Eclipsing Binary in the Young Open Cluster NGC 6193’, AJ, vol. 910 (2), 133, 12 pp., (2021)
  16. Kochukhov O., Johnston C., et al., ‘V772 Cas: an ellipsoidal variable HgMn star in an eclipsing binary’, MNRAS, vol. 5000 (2), 2577 (2021)
  17. Tkachenko A., Pavlovski K., Johnston, C., et al., ‘The mass discrepancy in intermediate- and high-mass eclipsing binaries: the need for higher convective core masses’, A&A, Volume 637, id.A60, 20pp (2020)
  18. Shultz M.E., Johnston C., et al., ‘MOBSTER – III. HD62658: a magnetic Bp star in an eclipsing binary with a non-magnetic `identical twin’’, MNRAS, vol. 490 (3), 4154S (2019)
  19. Bowman D.M., Johnston C., et al., ‘Discovery of Tidally Perturbed Pulsations in the Eclipsing Binary U Gru: A Crucial System for Tidal Asteroseismology’, ApJL, vol. 883 (1), L26 (2019)
  20. Sekaran S., Johnston C., et al., ‘Two’s a crowd? Characterising the effect of photometric contamination on the extraction of the global asteroseismic parameter 𝜈max in red-giant binaries’, A&A, vol. 624, A140 (2019)
  21. Pedersen M.G., Chowdhury S., Johnston, C. et al.,  ‘Diverse Variability of O and B Stars Revealed from 2-minute Cadence Light Curves in Sectors 1 and 2 of the TESS Mission: Selection of an Asteroseismic Sample’, ApJL, vol. 872 (1), L9 (2019)
  22. Bowman D. M., Aerts C., Johnston C., et al., ‘Photometric detection of internal gravity waves in upper main-sequence stars. I. Methodology and application to CoRoT targets’, A&A, vol. 621, A135 (2019)
  23. Kochukhov O., Johnston, C., et al., ‘HD66051: the first eclipsing binary hosting an early-type magnetic star’, MNRAS, vol. 478 (2), 1749K (2018)

Co-author:

  1. Britavsky N., …, Johnston C., ‘Binarity at LOw Metallicity (BLOeM): IV: multiplicity of blue supergiants in the SMC‘, A&A, in prep.
  2. Grossman D., …, Johnston C., ‘Towards an improved stellar age determination through joint modeling of binarity and asteroseismology: Asteroseismic grid modeling of the seismic red-giant binary KIC 9163796‘, A&A, in prep.
  3. Wang C., …, Johnston C., ‘Red supergiants in young open clusters — predictions based on detailed binary evolution models‘, A&A, in prep.
  4. Sana H., …, Johnston C., ‘A high fraction of close massive binary stars at low metallicity‘, submitted
  5. Shenar T., …, Johnston C., et al., ‘Binarity at LOw Metallicity (BLOeM): I. A spectroscopic VLT monitoring survey of massive stars in the SMC‘, A&A, accepted, 10.48550/arXiv.2407.14593
  6. Groot P., …, Johnston C., et al., ‘The BlackGEM telescope array I: overview’, A&A, submitted
  7. Rodriguez C., …, Johnston C., et al. ‘The elusive secondary component of the massive binary HD 165246 revealed by GHOST‘, MNRAS, in review
  8. Eisner N., …, Johnston C., et al., ‘Planet Hunters TESS V: a planetary system around a binary star, including a mini-Neptune in the habitable zone‘, AJ, 167 (5), 241, 21 pp. (2024)
  9. Buckley D. A. H., …, Johnston C., et al., ‘SALT high resolution spectroscopy and MeerLICHT photometry of the LMC transient ASASSN-23ii (AT 2023ygp)‘, The Astronomer’s Telegram, No. 16369 (2023)
  10. Groot P. J., …, Johnston C., et al. ‘BlackGEM: the wide-field multi-band optical telescope array‘, Proceedings of the SPIE, vol. 12182, 121821V, 9 pp. (2022)
  11. Hey D., …, Johnston C., et al., ‘Parameters of the eclipsing binary ∝ Draconis observed by TESS and SONG’, MNRAS, vol. 511 (2), 2648H (2022)
  12. Prša A., …, Johnston C., et al., ‘TESS Eclipsing Binary Stars. I. Short cadence observations of 4584 eclipsing binaries in Sectors 1-26’, ApJ SS, vol. 258 (1), 16 (2022)
  13. Audenaert J., …, Johnston C., et al., ‘TESS Data for Asteroseismology (T’DA) Stellar Variability Classification Pipeline: Setup and Application to the Kepler Q9 Data’, AJ, vol. 162 (5), 209, 25 pp. (2021)
  14. Eisner N.,…, Johnston C., et al., ‘Planet Hunters TESS II: Findings from the first two years of TESS’, MNRAS, vol. 501 (1), 4669E (2021)
  15. Sekaran S., Tkachenko A., Abdul-Masih M., Prša A., Johnston C., et al., ‘Tango of celestial dancers: A sample of detached eclipsing binary systems containing g-mode pulsating components. A case study of KIC9850387’, A&A, vol. 643, A162, 24 pp. (2020)
  16. Maxted P. F. L., Gaulme P., Graczyk D., Hełminiak K. G., Johnston C., et al., ‘The TESS light curve of AI Phoenicis’, MNRAS, vol. 498 (1), 332 (2020)
  17. Antoci V., …, Johnston C., et al., ‘The first view of δ Scuti and γ Doradus stars with the TESS mission’, MNRAS, vol. 490 (3), 4040 (2019)
  18. Escorza A., …, Johnston C., et al., ‘Barium and related stars, and their white-dwarf companions. II. Main-sequence and subgiant stars’, A&A, vol. 626, A128 (2019)
  19. Mombarg J.S.G., Van Reeth T., Pedersen M.G., Molenberghs G., Bowman D.M., Johnston, C., et al., ‘Asteroseismic masses, ages, and core properties of γ Doradus stars using gravito-inertial dipole modes and spectroscopy’, MNRAS, vol. 485 (3), 3248M (2019)
  20. Bowman D. M., Burssens S., Pedersen M.G., Johnston C., et al., ‘Low-frequency gravity waves in blue supergiants revealed by high-precision space photometry’, Nature Astronomy, vol. 3, 760B (2019)
  21. Aerts C., Pedersen M. G., Vermeyen E., Hendriks L., Johnston, C., et al, ‘Combined asteroseismology, spectroscopy, and astrometry of the CoRoT B2V target HD170580’, A&A, vol. 624, A75 (2019)
  22. Handler G.,…,  Johnston, C., et al.,  ‘Asteroseismology of Massive Stars with the TESS Mission: The Runaway β Cep Pulsator PHL 346 = HN Aqr’, ApJL, vol. 873 (1), L4 (2019)
  23. Van Reeth T., …, Johnston C., et al., ‘Sensitivity of gravito-inertial modes to differential rotation in intermediate-mass main-sequence stars’, A&A, vol. 618, A24 (2018)
  24. Buysschaert B., Aerts C., Bowman D. M., Johnston C., et al., ‘Forward seismic modeling of the pulsating magnetic B-type star HD43317’, A&A, vol. 616, A148 (2018)
  25. Aerts C., Molenberghs G., Michielsen M., Pedersen M. G., Bjorklund R., Johnston C., et al., ‘Forward Asteroseismic Modeling of Stars with a Convective Core from Gravity-mode Oscillations: Parameter Estimation and Stellar Model Selection’, ApJS, vol. 237  (1), 15 (2018)
  26. Aerts C., Bowman D. M., Simon-Diaz, S., Buysschaert, B., Johnston, C., et al., ‘K2 photometry and HERMES spectroscopy of the blue supergiant ρ Leo: rotational wind modulation and low-frequency waves’, MNRAS, vol. 476 (1), 1234 (2018)
  27. Beck P. G., …, Johnston C., et al., ‘Seismic probing of the first dredge-up event through the eccentric red-giant and red-giant spectroscopic binary KIC 9163796. How different are red-giant stars with a mass ratio of 1.015?’, A&A, vol. 612, A22 (2018)
  28. Abdul-Masih M., …, Johnston C., et al., ‘Kepler Eclipsing Binary Stars. VIII. Identification of False Positive Eclipsing Binaries and Re-extraction of New Light Curves’, AJ, vol. 151 (4), 101 (2016)
  29. Kirk B., …, Johnston C., et al., ‘Kepler Eclipsing Binary Stars. VII. The Catalog of Eclipsing Binaries Found in the Entire Kepler Data Set’, AJ, vol. 151 (3), 68 (2016)

Public data

  1. Grid of isochrone-clouds with variable internal mixing efficiencies

Transient detections

  1. MeerLICHT Transient Discovery Report for 2023-05-20, TNSTR No. 2023-1170, 1J: 2023ixg
  2. Two transients candidates in the error box of GW event S230518h, TNS AstroNote, No. 2023-121, 1J: 2023ixg, 2023iyb
  3. MeerLICHT Transient Discovery Report for 2023-03-29, TNSTR No. 2023-666, 1J: 2023edi
  4. MeerLICHT Transient Discovery Report for 2023-03-23, TNSTR No. 2023-612, 1J: 2023dwb
  5. MeerLICHT Transient Discovery Report for 2023-03-21, TNSTR No. 2023-594, 1W: 2023dud
  6. MeerLICHT Transient Discovery Report for 2023-03-21, TNSTR No. 2023-593, 1G: 2023duc
  7. Possible young supernova in galaxy SDSS J121935.03+052048.5 at z=0.07491, TNS AstroNote No. 2023-68, 1G: 2023dwb
  8. MeerLICHT Transient Discovery Report for 2022-06-19, TNSTR No. 2022-1703, 1G: 2022myv
  9. MeerLICHT Transient Discovery Report for 2022-06-08, TNSTR No. 2022-1596, 1G: 2023mht
  10. MeerLICHT Transient Discovery Report for 2022-06-01, TNSTR No. 2022-1513, 1G: 2023lmh
  11. MeerLICHT Transient Discovery Report for 2022-05-23, TNSTR No. 2022-1390, 1G: 2023kmf
  12. SOAR/MeerLICHT classification of the Galactic plane transient AT2022jrn as a microlensing event, The Astronomer’s Telegram, No. 15394, 1D: 2023jrn