OG
O. Gerhard
astro-ph.GAastro-phastro-ph.COastro-ph.SRastro-ph.HEastro-ph.IMastro-ph.EPgr-qc
On Valency
published · living versionsW_2an7x4pf·v1 · currentpublished
Chemical abundances in the polar disk of NGC4650A: implications for cold accretion scenario
with M. Spavone, E. Iodice, M. Arnaboldi, R. Saglia +1
1 version
Preprints & journals
216 papers in the corpus · 1995–2026A model for the ongoing subcluster interaction in Centaurus2610.20726v1 · Felipe S. Lohmann, Magda Arnaboldi, Michael Hilker et al.2026 · 0 citationsarXiv
The Merger-Driven Origin of the Vast Extended Stellar Disc Around the Andromeda Galaxy2607.02480v1 · C. Tsakonas, M. Arnaboldi, F. Hammer et al.2026 · 0 citationsarXiv
Kinematically cold and warm planetary nebulae samples, HII regions and supernovae remnants in the disc of the face-on spiral galaxy NGC 628 (M74) -- The Planetary Nebulae Spectrograph with the H arm2604.16045v1 · Magda Arnaboldi, Ortwin Gerhard, Surya Aniyan et al.2026 · 0 citationsarXiv
Galactic Archaeology with the Subaru `Ōnohi`ula Prime Focus Spectrograph Strategic Program2604.09875v4 · Masashi Chiba, Rosemary F. G. Wyse, Evan N. Kirby et al.2026 · 1 citationarXiv
Intracluster globular clusters as tracers of the mass assembly of the Hydra I galaxy cluster2602.15099v2 · Felipe S. Lohmann, Magda Arnaboldi, Michael Hilker et al.2026 · 1 citationarXiv
Extragalactic Planetary Nebulae (xPNe). Determining Distances out to 100 Mpc and the Renaissance of the PN Luminosity Function Method2601.16893v1 · Magda Arnaboldi, Ortwin Gerhard, Martin Roth et al.2026 · 0 citationsarXiv
Extragalactic Planetary Nebulae (xPNe). Chemical evolution and assembly histories of nearby galaxies using Oxygen and Argon abundances. From the local universe to cosmic dawn2601.17106v1 · Magda Arnaboldi, Ortwin Gerhard, Martin Roth et al.2026 · 0 citationsarXiv
Extragalactic planetary nebulae -- tracers of kinematics and stellar populations out to 100 Mpc2601.11324v1 · Johanna Hartke, Magda Arnaboldi, Claudia Pulsoni et al.2026 · 0 citationsarXiv
Dynamical properties of high-[Mg/Fe] stars in the Milky Way bar region2508.09119v1 · Aakash Pandey, Ortwin Gerhard2025 · 0 citationsarXiv
The Galactic Bulge exploration V.: The secular spherical and X-shaped Milky Way bulge2506.19074v2 · Z. Prudil, V. P. Debattista, L. Beraldo e Silva et al.2025 · 0 citationsarXiv
Mass-dependent chemical enrichment sequences of SDSS star-forming galaxies out to z~0.3 revealed by direct O & Ar abundances2505.01896v2 · Souradeep Bhattacharya, Magda Arnaboldi, Chiaki Kobayashi et al.2025 · 2 citationsMon Not R Astron Soc (2026)
The survey of planetary nebulae in Andromeda (M31) VII. Predictions of a major merger simulation model compared with chemodynamical data of the disc and inner halo substructures2502.00886v2 · C. Tsakonas, M. Arnaboldi, S. Bhattacharya et al.2025 · 6 citationsA&A 699, A56 (2025)
The Galactic Bulge exploration IV.: RR~Lyrae stars as traces of the Galactic bar -- 3D and 5D analysis, extinction variation2501.03497v1 · Z. Prudil, A. Kunder, L. Beraldo e Silva et al.2025 · 9 citationsA&A 695, A211 (2025)
The GECKOS Survey: Identifying kinematic sub-structures in edge-on galaxies2411.03430v2 · A. Fraser-McKelvie, J. van de Sande, D. A. Gadotti et al.2024 · 24 citationsA&A 700, A237 (2025)
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars2409.03746v2 · Behzad Tahmasebzadeh, Shashank Dattathri, Monica Valluri et al.2024 · 3 citationsarXiv
Unveiling galaxy chemical enrichment mechanisms out to z~8 from direct determination of O & Ar abundances from JWST/NIRSPEC spectroscopy2408.13396v2 · Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard et al.2024 · 2 citationsarXiv
The VISTA Variables in the Vía Láctea eXtended (VVVX) ESO public survey: Completion of the observations and legacy2406.16646v1 · R. K. Saito, M. Hempel, J. Alonso-Garc'ia et al.2024 · 39 citationsA&A 689, A148 (2024)
Testing kinematic distances under a realistic Galactic potential2403.18000v2 · Glen H. Hunter, Mattia C. Sormani, Jan P. Beckmann et al.2024 · 43 citationsA&A 692, A216 (2024)
Shapes of dark matter haloes with discrete globular cluster dynamics: The example of NGC 5128 (Centaurus A)2403.13109v1 · Tadeja Versic, Marina Rejkuba, Magda Arnaboldi et al.2024 · 4 citationsA&A 687, A80 (2024)
Planetary nebulae populations in the haloes of nearby massive early-type galaxies2312.02587v1 · J. Hartke, M. Arnaboldi, O. Gerhard et al.2023 · 0 citationsProc. IAU 19 (2023) 109-121
The Halos and Environments of Nearby Galaxies (HERON) Survey IV: Complexity in the boxy galaxies NGC 720 and NGC 27682311.09286v1 · Andreas J. Koch-Hansen, Anna Pasquali, R. Michael Rich et al.2023 · 0 citationsarXiv
Bar-driven Gas Dynamics of M312311.04796v2 · Zi-Xuan Feng (SHAO), Zhi Li (SHNU), Juntai Shen (SJTU) et al.2023 · 8 citationsarXiv
The epoch of the Milky Way's bar formation: dynamical modelling of Mira variables in the nuclear stellar disc2311.00035v1 · Jason L. Sanders, Daisuke Kawata, Noriyuki Matsunaga et al.2023 · 54 citationsarXiv
Schwarzschild Modeling of Barred S0 Galaxy NGC 43712310.00497v3 · Behzad Tahmasebzadeh, Ling Zhu, Juntai Shen et al.2023 · 1 citationarXiv
On the /Fe bimodality of the M31 disks2309.01707v1 · Chiaki Kobayashi, Souradeep Bhattacharya, Magda Arnaboldi et al.2023 · 19 citationsarXiv
JASMINE: Near-Infrared Astrometry and Time Series Photometry Science2307.05666v2 · Daisuke Kawata, Hajime Kawahara, Naoteru Gouda et al.2023 · 25 citationsarXiv
The flattening of dark matter halo of Centaurus A galaxy (NGC 5128) out to 40 kpc2305.09822v1 · Tadeja Versic, Marina Rejkuba, Magda Arnaboldi et al.2023 · 0 citationsarXiv
The Andromeda Galaxy's Last Major Merger: Constraints from the survey of Planetary Nebulae2305.02761v2 · Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard et al.2023 · 1 citationProceedings of the International Astronomical Union , Volume 18 , Symposium S377: Early Disk-Galaxy Formation from JWST to the Milky Way , December 2022 , pp. 123 - 126
The survey of planetary nebulae in Andromeda (M31) VI. Kinematics of M31 inner-halo substructures and comparison with major-merger simulation predictions2304.14151v3 · Souradeep Bhattacharya, Magda Arnaboldi, Francois Hammer et al.2023 · 18 citationsarXiv
The extended Planetary Nebula Spectrograph (ePN.S) early-type galaxy survey: The specific angular momentum of ETGs2303.06132v2 · C. Pulsoni, O. Gerhard, S. M. Fall et al.2023 · 7 citationsA&A 674, A96 (2023)
Kinematics of the diffuse intragroup and intracluster light in groups and clusters of galaxies in the Local Universe within 100 Mpc distance2212.09569v1 · Magda Arnaboldi, Ortwin E. Gerhard2022 · 25 citationsPublished in Front. Astron. Space Sci., 15 December 2022 Sec. Extragalactic Astronomy
Orbit-Superposition Dynamical Modeling of Barred Galaxies2210.14218v2 · Behzad Tahmasebzadeh, Ling Zhu, Juntai Shen et al.2022 · 21 citationsarXiv
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products2208.05432v1 · G. Gilmore, S. Randich, C. C. Worley et al.2022 · 136 citationsA&A 666, A120 (2022)
The survey of planetary nebulae in Andromeda (M 31) V. Chemical enrichment of the thin and thicker discs of Andromeda. Oxygen to argon abundance ratios for planetary nebulae and H II regions2208.02328v1 · Magda Arnaboldi, Souradeep Bhattacharya, Ortwin Gerhard et al.2022 · 30 citationsA&A 666, A109 (2022)
Large-scale Hydrodynamical Shocks as the Smoking Gun Evidence for a Bar in M312206.10026v2 · Zi-Xuan Feng (SHAO), Zhi Li (SJTU), Juntai Shen (SJTU) et al.2022 · 8 citationsarXiv
The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy2206.02901v1 · S. Randich, G. Gilmore, L. Magrini et al.2022 · 189 citationsarXiv
The stellar mass distribution of the Milky Way's bar: an analytic model2204.13114v1 · Mattia C. Sormani, Ortwin Gerhard, Matthieu Portail et al.2022 · 58 citationsarXiv
The survey of planetary nebulae in Andromeda (M31). IV. Radial oxygen and argon abundance gradients of the thin and thicker disc2203.06428v2 · Souradeep Bhattacharya, Magda Arnaboldi, Nelson Caldwell et al.2022 · 26 citationsarXiv
The halo of M105 and its group environment as traced by planetary nebula populations: II. Using kinematics of single stars to unveil the presence of intragroup light around the Leo I galaxies NGC 3384 and M1052201.08710v1 · J. Hartke, M. Arnaboldi, O. Gerhard et al.2022 · 18 citationsA&A 663, A12 (2022)
Chemo-kinematics of the Milky Way spiral arms and bar resonances: connection to ridges and moving groups in the Solar vicinity2111.15211v1 · Sergey Khoperskov, Ortwin Gerhard2021 · 45 citationsA&A 663, A38 (2022)
Self-consistent modelling of the Milky Way's Nuclear Stellar Disc2111.12713v3 · Mattia C. Sormani, Jason L. Sanders, Tobias K. Fritz et al.2021 · 77 citationsarXiv
A barred Milky Way surrogate from an N-body simulation2111.05466v1 · T. Tepper-Garcia, J. Bland-Hawthorn, E. Vasiliev et al.2021 · 10 citationsarXiv
Deprojection of external barred galaxies from photometry2110.06955v1 · Behzad Tahmasebzadeh, Ling Zhu, Juntai Shen et al.2021 · 13 citationsarXiv
The Milky Way's middle-aged inner ring2110.03658v2 · Shola M. Wylie, Jonathan P. Clarke, Ortwin E. Gerhard2021 · 21 citationsA&A 659, A80 (2022)
The Pattern Speed of the Milky Way Bar/Bulge from VIRAC & Gaia2107.10875v2 · Jonathan Clarke, Ortwin Gerhard2021 · 74 citationsarXiv
A2A: 21,000 bulge stars from the ARGOS survey with stellar parameters on the APOGEE scale2106.14298v1 · S. M. Wylie, O. E. Gerhard, M. K. Ness et al.2021 · 24 citationsA&A 653, A143 (2021)
The Milky Way's nuclear stellar disc: A dynamically cool and metal-rich component formed from the Central Molecular Zone?2104.10439v2 · M. Schultheis, T.K. Fritz, G. Nandakumar et al.2021 · 52 citationsA&A 650, A191 (2021)
Gas Dynamics in the Galaxy: Total Mass Distribution and the Bar Pattern Speed2103.10342v2 · Zhi Li (TDLI, SJTU), Juntai Shen (SJTU) et al.2021 · 65 citationsarXiv
The survey of planetary nebulae in Andromeda (M31) III. Constraints from deep planetary nebula luminosity functions on the origin of the inner halo substructures in M312101.11860v1 · Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard et al.2021 · 0 citationsA&A 647, A130 (2021)
A KMOS survey of the nuclear disk of the Milky Way I: Survey design and metallicities2012.00918v2 · Tobias K. Fritz, Lee Patrick, Anja Feldmeier-Krause et al.2020 · 28 citationsA&A 649, A83 (2021)
Career total: at least 558 works. 216 are in this corpus.Showing the 50 most recent.
Profile built from the corpus for this byline.
Author records are still filling in while the Hub is in alpha. If this is your page, you'll be able to claim it soon. Spot a mistake? Tell us.