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Dr. G.K. (Gudmundur) Stefansson

Faculteit der Natuurwetenschappen, Wiskunde en Informatica
Anton Pannekoek Institute for Astronomy
Bezoekadres
  • Science Park 904
Postadres
  • Postbus 94249
    1090 GE Amsterdam
Contactgegevens
Social media
  • Publicaties

    2024

    • Beard, C., Robertson, P., Giovinazzi, M. R., Murphy, J. M. A., Ford, E. B., Halverson, S., Han, T., Holcomb, R., Lubin, J., Luque, R., Premnath, P., Bender, C. F., Blake, C. H., Gong, Q., Isaacson, H., Kanodia, S., Li, D., Lin, A. S. J., Logsdon, S. E., ... Wright, J. T. (2024). Utilizing Photometry from Multiple Sources to Mitigate Stellar Variability in Precise Radial Velocities: A Case Study of Kepler-21. Astronomical Journal, 168(4), Article 149. https://doi.org/10.3847/1538-3881/ad6b22 [details]
    • Bernabò, L. M., Kanodia, S., Cañas, C. I., Cochran, W. D., Csizmadia, S., Mahadevan, S., Stefánsson, G., Gupta, A. F., Monson, A., Kobulnicky, H. A., Larsen, A. K., Cotter, E. G., Birkholz, A., Swaby, T. N., Zeimann, G., Bender, C. F., Diddams, S. A., Libby-Roberts, J. E., Lin, A. S. J., ... Schwab, C. (2024). Searching for GEMS: TOI-6383Ab, a Giant Planet Transiting an M3-dwarf Star in a Binary System. Astronomical Journal, 168(6), Article 273. https://doi.org/10.3847/1538-3881/ad7fe8 [details]
    • Brady, M., Bean, J. L., Seifahrt, A., Kasper, D., Luque, R., Stefánsson, G., Stürmer, J., Charbonneau, D., Collins, K. A., Doty, J. P., Essack, Z., Fukui, A., Horta, F. G., Hedges, C., Hellier, C., Jenkins, J. M., Narita, N., Quinn, S. N., Shporer, A., ... Zambelli, R. (2024). Early Results from the HUMDRUM Survey: A Small, Earth-mass Planet Orbits TOI-1450A. Astronomical Journal, 168(2), Article 67. https://doi.org/10.3847/1538-3881/ad500a [details]
    • Doyle, L., Cañas, C. I., Libby-Roberts, J. E., Cegla, H. M., Stefánsson, G. K., Anderson, D., Armstrong, D. J., Bender, C., Bayliss, D., Carmichael, T. W., Casewell, S., Kanodia, S., Lafarga, M., Lin, A. S. J., Mahadevan, S., Monson, A., Robertson, P., & Veras, D. (2024). The First Spin-Orbit Obliquity of an M dwarf/brown dwarf system: an eccentric and aligned TOI-2119 b. Monthly Notices of the Royal Astronomical Society, 536(4), 3745–3756. https://doi.org/10.1093/mnras/stae2819
    • Espinoza-Retamal, J. I., Stefánsson, G., Petrovich, C., Brahm, R., Jordán, A., Sedaghati, E., Lucero, J. P., Pinto, M. T., Muñoz, D. J., Boyle, G., Leiva, R., & Suc, V. (2024). HATS-38 b and WASP-139 b Join a Growing Group of Hot Neptunes on Polar Orbits. Astronomical Journal, 168(4), Article 185. https://doi.org/10.3847/1538-3881/ad70b8 [details]
    • Fitzmaurice, E., Stefánsson, G., Kavanagh, R. D., Mahadevan, S., Cañas, C. I., Winn, J. N., Robertson, P., Ninan, J. P., Albrecht, S., Callingham, J. R., Cochran, W. D., Delamer, M., Ford, E. B., Kanodia, S., Lin, A. S. J., Marcussen, M. L., Pope, B. J. S., Ramsey, L. W., Roy, A., ... Wright, J. T. (2024). Astrometry and Precise Radial Velocities Yield a Complete Orbital Solution for the Nearby Eccentric Brown Dwarf LHS 1610 b. Astronomical Journal, 168(3), Article 140. https://doi.org/10.3847/1538-3881/ad57be [details]
    • Gan, T., Wang, S. X., Dai, F., Winn, J. N., Mao, S., Xu, S., Pallé, E., Bean, J. L., Brady, M., Brown, N., Lu, C., Luque, R., Mocnik, T., Seifahrt, A., & Stefánsson, G. K. (2024). The Aligned Orbit of a Hot Jupiter around the M Dwarf TOI-4201. Astrophysical Journal Letters, 969(1), Article L24. https://doi.org/10.3847/2041-8213/ad5967 [details]
    • Giacalone, S., Dai, F., Zanazzi, J. J., Howard, A. W., Dressing, C. D., Winn, J. N., Rubenzahl, R. A., Carmichael, T. W., Vowell, N., Kesseli, A., Halverson, S., Isaacson, H., Brodheim, M., Deich, W., Fulton, B. J., Gibson, S. R., Hill, G. M., Holden, B., Householder, A., ... Yeh, S. (2024). The OATMEAL Survey I. Low Stellar Obliquity in the Transiting Brown Dwarf System GPX-1. Astronomical Journal, 168(5), Article 189. https://doi.org/10.3847/1538-3881/ad785a [details]
    • Gupta, A. F., Millholland, S. C., Im, H., Dong, J., Jackson, J. M., Carleo, I., Libby-Roberts, J., Delamer, M., Giovinazzi, M. R., Lin, A. S. J., Kanodia, S., Wang, X.-Y., Stassun, K., Masseron, T., Dragomir, D., Mahadevan, S., Wright, J., Alvarado-Montes, J. A., Bender, C., ... Ziegler, C. (2024). A hot-Jupiter progenitor on a super-eccentric retrograde orbit. Nature, 632(8023), 50-54. https://doi.org/10.1038/s41586-024-07688-3 [details]
    • Hon, M., Stefánsson, G., & Keck Planet Finder (2024). Asteroseismology of the Nearby K Dwarf σ Draconis Using the Keck Planet Finder and TESS. Astrophysical Journal, 975(1), Article 147. https://doi.org/10.3847/1538-4357/ad76a9 [details]
    • Jones, S. E., Stefánsson, G., Masuda, K., Libby-Roberts, J. E., Gardner, C. N., Holcomb, R., Beard, C., Robertson, P., Cañas, C. I., Mahadevan, S., Kanodia, S., Lin, A. S. J., Kobulnicky, H. A., Parker, B. A., Bender, C. F., Cochran, W. D., Diddams, S. A., Fernandes, R. B., Gupta, A. F., ... Wisniewski, J. (2024). TOI-2015 b: A Warm Neptune with Transit Timing Variations Orbiting an Active Mid-type M Dwarf. Astronomical Journal, 168(2), Article 93. https://doi.org/10.3847/1538-3881/ad55ea [details]
    • Kanodia, S., Gupta, A. F., Cañas, C. I., Bernabò, L. M., Reji, V., Han, T., Brady, M., Seifahrt, A., Cochran, W. D., Morrell, N., Basant, R., Bean, J., Bender, C. F., de Beurs, Z. L., Bieryla, A., Birkholz, A., Brown, N., Chapman, F., Ciardi, D. R., ... Vanderburg, A. (2024). Searching for GEMS: Characterizing Six Giant Planets Around Cool Dwarfs. Astronomical Journal, 168(6), Article 235. https://doi.org/10.3847/1538-3881/ad7796 [details]
    • Lubin, J., Petigura, E. A., Van Zandt, J., Beard, C., Dai, F., Halverson, S., Holcomb, R., Howard, A. W., Isaacson, H., Luhn, J., Robertson, P., Rubenzahl, R. A., Stefánsson, G., Winn, J. N., Brodheim, M., Deich, W., Hill, G. M., Gibson, S. R., Holden, B., ... Walawender, J. (2024). The HD 191939 Exoplanet System is Well Aligned and Flat. Astronomical Journal, 168(5), Article 196. https://doi.org/10.3847/1538-3881/ad79ed [details]
    • Martioli, E., Petrucci, R. P., Jofré, E., Hébrard, G., Ghezzi, L., Gómez Maqueo Chew, Y., Díaz, R. F., Perottoni, H. D., Garcia, L. H., Rapetti, D., Lecavelier des Etangs, A., de Almeida, L., Arnold, L., Artigau, E., Basant, R., Bean, J. L., Bieryla, A., Boisse, I., Bonfils, X., ... Twicken, J. D. (2024). TOI-3568 b: A super-Neptune in the sub-Jovian desert. Astronomy and Astrophysics, 690, Article A312. https://doi.org/10.1051/0004-6361/202450334 [details]
    • Masuda, K., Libby-Roberts, J. E., Livingston, J. H., Stevenson, K. B., Gao, P., Vissapragada, S., Fu, G., Han, T., Greklek-McKeon, M., Mahadevan, S., Agol, E., Bello-Arufe, A., Berta-Thompson, Z., Cañas, C. I., Chachan, Y., Hebb, L., Hu, R., Kawashima, Y., Knutson, H. A., ... Wang, G. (2024). A Fourth Planet in the Kepler-51 System Revealed by Transit Timing Variations. Astronomical Journal, 168(6), Article 294. https://doi.org/10.3847/1538-3881/ad83d3 [details]
    • Rubenzahl, R. A., Dai, F., Halverson, S., Howard, A. W., Householder, A., Fulton, B., Behmard, A., Gibson, S. R., Roy, A., Shaum, A. P., Isaacson, H., Brodheim, M., Deich, W., Hill, G. M., Holden, B., Laher, R. R., Lanclos, K., Payne, J. N., Petigura, E. A., ... Wishnow, E. (2024). KPF Confirms a Polar Orbit for KELT-18 b. Astronomical Journal, 168(5), Article 188. https://doi.org/10.3847/1538-3881/ad70b5 [details]
    • Rubenzahl, R. A., Howard, A. W., Halverson, S., Petrovich, C., Angelo, I., Stefánsson, G., Dai, F., Householder, A., Fulton, B., Gibson, S. R., Roy, A., Shaum, A. P., Isaacson, H., Brodheim, M., Deich, W., Hill, G. M., Holden, B., Huber, D., Laher, R. R., ... Wright, J. T. (2024). Obliquity Constraints for the Extremely Eccentric Sub-Saturn Kepler-1656 b. Astrophysical Journal Letters, 971(2), Article L40. https://doi.org/10.3847/2041-8213/ad6985 [details]
    • Saunders, N., Grunblatt, S. K., Chontos, A., Dai, F., Huber, D., Zhang, J., Stefánsson, G., van Saders, J. L., Winn, J. N., Hey, D., Howard, A. W., Fulton, B., Isaacson, H., Beard, C., Giacalone, S., Van Zandt, J., Murphey, J. M. A., Rice, M., Blunt, S., ... Yeh, S. (2024). TESS Giants Transiting Giants. VI. Newly Discovered Hot Jupiters Provide Evidence for Efficient Obliquity Damping after the Main Sequence. Astronomical Journal, 168(2), Article 81. https://doi.org/10.3847/1538-3881/ad543b [details]
    • Siegel, J. C., Halverson, S., Luhn, J. K., Zhao, L. L., Al Moulla, K., Robertson, P., Bender, C. F., Terrien, R. C., Roy, A., Mahadevan, S., Hearty, F., Ninan, J. P., Wright, J. T., Ford, E. B., Schwab, C., Stefánsson, G., Blake, C. H., & McElwain, M. W. (2024). Quiet Please: Detrending Radial Velocity Variations from Stellar Activity with a Physically Motivated Spot Model. Astronomical Journal, 168(4), Article 158. https://doi.org/10.3847/1538-3881/ad6768 [details]
    • TESS (2024). An Earth-sized Planet on the Verge of Tidal Disruption. Astronomical Journal, 168(3), Article 101. https://doi.org/10.3847/1538-3881/ad5a7d [details]

    2023

    • Morley, C., Gully-Santiago, M., MacLeod, M., Oklopcic, A., Luna, J., Tran, Q. H., Ninan, J. P., Mahadevan, S., Krolikowski, D. M., Cochran, W. D., Bowler, B. P., Endl, M., Stefansson, G., Tofflemire, B. M., Vanderburg, A. & Zeimann, G. R. (23-4-2023). Giant Tidal Tails of Helium Escaping the Hot Jupiter HAT-P-32 b. Zenodo. https://doi.org/10.5281/zenodo.7767042
    This list of publications is extracted from the UvA-Current Research Information System. Questions? Ask the library or the Pure staff of your faculty / institute. Log in to Pure to edit your publications. Log in to Personal Page Publication Selection tool to manage the visibility of your publications on this list.
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