GH
G. Hajdu
astro-ph.SRastro-ph.GAastro-ph.IMastro-ph.COastro-ph.EPgr-qchep-phhep-th
On Valency
published · living versionsW_uhvfcmye·v1 · currentpublished
Period Change Rates in Large Magellanic Cloud Cepheids Revisited
with N. Rodríguez-Segovia, M. Catelan, F. Espinoza-Arancibia, G. Boggiano +8
1 version
W_mcce3zqr·v1published
W_43xbnbke·v1published
Preprints & journals
67 papers in the corpus · 2009–2026Interstellar extinction of classical Cepheids from neighboring stars I. Methodology and application to 16 Galactic Cepheids2609.28406v1 · Wilma Kiviaho, Pierre Kervella, Mika Juvela et al.2026 · 0 citationsarXiv
HALO II: Constraining Hubble constant through continuum delay fitting of Fairall 92606.27195v1 · Amit Kumar Mandal, Francisco Pozo Nunez, Vikram Kumar Jaiswal et al.2026 · 0 citationsarXiv
Reddening maps of the Magellanic Clouds using spectral energy distribution fitting of red giants2605.03585v1 · H. Netzel, G. Pietrzy'nski, M. G'orski et al.2026 · 0 citationsarXiv
Period-Luminosity Relations, projection factor and radii of Anomalous Cepheids2603.28472v1 · Piotr Wielg'orski, Grzegorz Pietrzy'nski, Wolfgang Gieren et al.2026 · 0 citationsarXiv
Finding the elusive RR Lyrae companions via speckle imaging2603.28684v2 · R. Salinas, V. Kalari, G. Hajdu et al.2026 · 1 citationarXiv
Reconstruction of Cepheid Radial Velocity Curves from the shape of the V-band Light Curves2603.11748v1 · V. Hocd'e, P. Moskalik, N. Nardetto et al.2026 · 0 citationsA&A 709, A151 (2026)
RR Lyrae stars with variable mean magnitudes2512.15636v1 · Gergely Hajdu, Johanna Jurcsik, M'arcio Catelan et al.2025 · 1 citationarXiv
HALO I: Photometric continuum reverberation mapping of Fairall 92512.13296v2 · Amit Kumar Mandal, Francisco Pozo Nunez, Vikram Kumar Jaiswal et al.2025 · 0 citationsarXiv
Distance to the Globular Cluster M 3 from the Infrared Surface Brightness Technique applied to RR Lyrae stars2512.09119v1 · Bart\lomiej Zgirski, Wolfgang Gieren, Grzegorz Pietrzy'nski et al.2025 · 0 citationsarXiv
The nature of ASASSN-24fw's occultation: modelling the event as dimming by optically thick rings around a sub-stellar companion2511.02581v2 · Sarang Shah, Jonathan P. Marshall, Carlos del Burgo et al.2025 · 1 citationarXiv
Secondary standards in the UKIRT faint standard fields2511.02945v1 · Marek G'orski, Grzegorz Pietrzy'nski, Paulina Karczmarek et al.2025 · 0 citationsarXiv
Period-Luminosity Relations for Galactic Type II Cepheids in the Sloan bands2503.10532v2 · W. Narloch, G. Hajdu, G. Pietrzynski et al.2025 · 2 citationsA&A 697, A30 (2025)
Non-evolutionary effects on period change in Magellanic Cepheids II. Empirical constraints on non-linear period changes2503.00661v1 · Rajeev Singh Rathour, Rados\law Smolec, Gergely Hajdu et al.2025 · 0 citationsarXivon Valency
Toward early-type eclipsing binaries as extragalactic milestones: IV. Physical properties of three detached O/B-type systems in the LMC2501.04080v1 · M'onica Taormina, G. Pietrzy'nski, R.-P. Kudritzki et al.2025 · 1 citationarXiv
Non-evolutionary effects on period change in Magellanic Cepheids2501.01777v2 · R. S. Rathour, R. Smolec, G. Hajdu et al.2025 · 4 citationsarXiv
Circumstellar emission of Cepheids across the instability strip: Mid-infrared observations with VLTI/MATISSE2501.00373v1 · V. Hocd'e, A. Matter, N. Nardetto et al.2024 · 2 citationsarXiv
Precise physical parameters of three late-type eclipsing binary giant stars in the Large Magellanic Cloud2410.18619v1 · G. Rojas Garc'ia, D. Graczyk, G. Pietrzy'nski et al.2024 · 0 citationsA&A 692, A110 (2024)
The Infrared Surface Brightness technique applied to RR Lyrae stars from the solar neighborhood2408.02102v1 · Bart\lomiej Zgirski, Wolfgang Gieren, Grzegorz Pietrzy'nski et al.2024 · 4 citationsA&A 690, A295 (2024)
Projection factor and radii of Type II Cepheids2406.16561v1 · Piotr Wielg'orski, Grzegorz Pietrzy'nski, Wolfgang Gieren et al.2024 · 5 citationsarXiv
Period-luminosity and period-luminosity-metallicity relations for Galactic RR Lyrae stars in the Sloan bands2406.12408v1 · W. Narloch, G. Hajdu, G. Pietrzynski et al.2024 · 12 citationsarXiv
Towards early-type eclipsing binaries as extragalactic milestones: III. Physical properties of the O-type eclipsing binary OGLE LMC-ECL-21568 in a quadruple system2404.02970v1 · M'onica Taormina, R.-P. Kudritzki, B. Pilecki et al.2024 · 0 citationsarXiv
Non-evolutionary effects on period change in Magellanic Cepheids I. New binary systems revealed from Light Travel Time Effect2403.14039v2 · Rajeev Singh Rathour, Gergely Hajdu, Rados\law Smolec et al.2024 · 4 citationsA&A 686, A268 (2024)on Valency
Cepheids with giant companions. II. Spectroscopic confirmation of nine new double-lined binary systems composed of two Cepheids2403.12390v1 · BogumiłPilecki, Ian B. Thompson, Felipe Espinoza-Arancibia et al.2024 · 8 citationsA&A 686, A263 (2024)
Photometric metallicities of fundamental-mode RR Lyr stars from Gaia -band photometry of globular-cluster variables2308.08929v1 · Johanna Jurcsik, Gergely Hajdu2023 · 11 citationsarXiv
Roman Early-Definition Astrophysics Survey Opportunity: Galactic Roman Infrared Plane Survey (GRIPS)2307.07642v1 · Roberta Paladini, Catherine Zucker (STScI), Robert Benjamin et al.2023 · 0 citationsarXiv
Period-Luminosity Relations for Galactic classical Cepheids in the Sloan bands2306.06326v2 · Weronika Narloch, Gergely Hajdu, Grzegorz Pietrzynski et al.2023 · 11 citationsarXiv
New Near-Infrared Period-Luminosity-Metallicity Relations for Galactic RR Lyrae Stars Based on Gaia EDR3 Parallaxes2305.09414v1 · Bart\lomiej Zgirski, Grzegorz Pietrzy'nski, Marek G'orski et al.2023 · 15 citationsarXiv
Synthetic Population of Binary Cepheids. II. The effect of companion light on the extragalactic distance scale2303.15664v1 · Paulina Karczmarek, Gergely Hajdu, Grzegorz Pietrzy'nski et al.2023 · 6 citationsarXiv
HARPS-N high spectral resolution observations of Cepheids II. The impact of the surface-brightness color relation on the Baade-Wesselink projection factor of eta Aql2301.09468v1 · N. Nardetto, W. Gieren, J. Storm et al.2023 · 14 citationsA&A 671, A14 (2023)
Discovery of a binary-origin classical Cepheid in a binary system with a 59-day orbital period2212.04518v1 · BogumiłPilecki, Ian B. Thompson, Felipe Espinoza-Arancibia et al.2022 · 11 citations2022, ApJL, 940, L48
Evolved eclipsing binary systems in the Galactic bulge: Precise physical and orbital parameters of OGLE-BLG-ECL-305487 and OGLE-BLG-ECL-1162182210.12413v2 · K. Suchomska, D. Graczyk, C. Ga\lan et al.2022 · 1 citationA&A 668, A30 (2022)
Period Change Rates of Large Magellanic Cloud Cepheids using MESA2209.10609v2 · F. Espinoza-Arancibia, M. Catelan, G. Hajdu et al.2022 · 9 citationsarXiv
Surface brightness-colour relations of dwarf stars from detached eclipsing binaries -- I. Calibrating sample2208.07257v1 · D. Graczyk, G. Pietrzy'nski, C. Galan et al.2022 · 8 citationsA&A 666, A128 (2022)
Metallicities and ages for star clusters and their surrounding fields in the Large Magellanic Cloud2207.13153v2 · W. Narloch, G. Pietrzy'nski, W. Gieren et al.2022 · 22 citationsA&A 666, A80 (2022)
Synthetic population of binary Cepheids. I. The effect of metallicity and initial parameter distribution on characteristics of Cepheids' companions2204.00661v2 · Paulina Karczmarek, Rados\law Smolec, Gergely Hajdu et al.2022 · 9 citationsThe Astrophysical Journal, Volume 930, Issue 1, id.65 (2022)
An absolute calibration of the near-infrared Period-Luminosity Relations of Type II Cepheids in the Milky Way and in the Large Magellanic Cloud2112.12122v1 · Piotr Wielg'orski, Grzegorz Pietrzy'nski, BogumiłPilecki et al.2021 · 19 citationsarXiv
Period Change Rates in Large Magellanic Cloud Cepheids Revisited2111.03503v1 · N. Rodr'iguez-Segovia, G. Hajdu, M. Catelan et al.2021 · 14 citationsarXivon Valency
On the photometric metallicity of Oosterhoff-type I and II RRab stars2105.05638v1 · Johanna Jurcsik, Gergely Hajdu, 'Aron Juh'asz2021 · 5 citationsarXiv
Studies of RR Lyrae Variables in Binary Systems. I.: Evidence of a Trimodal Companion Mass Distribution2105.03750v2 · Gergely Hajdu, Grzegorz Pietrzy'nski, Johanna Jurcsik et al.2021 · 26 citationsarXiv
The Araucaria Project. Distances to Nine Galaxies Based on a Statistical Analysis of their Carbon Stars (JAGB Method)2105.02120v2 · Bart\lomiej Zgirski, Grzegorz Pietrzy'nski, Wolfgang Gieren et al.2021 · 30 citationsarXiv
The surface brightness - colour relations based on eclipsing binary stars and calibrated with Gaia EDR32103.02077v1 · D. Graczyk, G. Pietrzy'nski, C. Ga\lan et al.2021 · 25 citationsA&A 649, A109 (2021)
Metallicities and ages for 35 star clusters and their surrounding fields in the Small Magellanic Cloud2101.12734v2 · W. Narloch, G. Pietrzy'nski, W. Gieren et al.2021 · 23 citationsA&A 647, A135 (2021)
The Araucaria Project: Deep near-infrared photometric maps of Local and Sculptor Group galaxies. I. Carina, Fornax, Sculptor2101.09888v1 · Paulina Karczmarek, Grzegorz Pietrzy'nski, Wolfgang Gieren et al.2021 · 3 citationsarXiv
On the optimal calibration of VVV photometry1908.06160v2 · Gergely Hajdu, Istv'an D'ek'any, M'arcio Catelan et al.2019 · 33 citationsarXiv
New Galactic multi-mode Cepheids from the ASAS-SN Survey1812.01575v2 · Johanna Jurcsik, Gergely Hajdu, M'arcio Catelan2018 · 2 citationsarXiv
Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids1809.07352v1 · Bertrand Lemasle, Gergely Hajdu, Valery Kovtyukh et al.2018 · 39 citationsA&A 618, A160 (2018)
Establishing the Galactic Centre Distance Using VVV Bulge RR Lyrae Variables1805.04119v1 · D. Majaess, I. D'ek'any, G. Hajdu et al.2018 · 26 citationsarXiv
A Data-driven Study of RR Lyrae Near-IR Light Curves: Principal Component Analysis, Robust Fits, and Metallicity Estimates1804.01456v1 · Gergely Hajdu, Istv'an D'ek'any, M'arcio Catelan et al.2018 · 39 citationsarXiv
Blazhko modulation in the infrared1801.03436v1 · J. Jurcsik, G. Hajdu, I. D'ek'any et al.2018 · 26 citationsarXiv
The first Baade-Wesselink analysis of Blazhko RR Lyrae stars: discrepancies between photometrically and spectroscopically determined radius variations1705.08537v1 · J. Jurcsik, G. Hajdu2017 · 8 citationsarXiv
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