Zobrazeno 1 - 10
of 191
pro vyhledávání: '"O'Grady, P. J."'
Interacting binary star systems play a critical role in many areas of astrophysics. One interesting example of a binary merger product are Thorne-\.Zytkow Objects (T\.ZOs), stars that look like red supergiants but contain neutron stars at their cores
Externí odkaz:
http://arxiv.org/abs/2410.02896
Autor:
O'Grady, Anna J. G., Drout, Maria R., Neugent, Kathryn F., Ludwig, Bethany, Gotberg, Ylva, Gaensler, Bryan M.
Recent works have constrained the binary fraction of evolved populations of massive stars in local galaxies such as red supergiants and Wolf-Rayet stars, but the binary fraction of yellow supergiants (YSGs) in the Hertzsprung Gap remains unconstraine
Externí odkaz:
http://arxiv.org/abs/2406.17177
Autor:
Kilpatrick, Charles D., Izzo, Luca, Bentley, Rory O., Chambers, Kenneth C., Coulter, David A., Drout, Maria R., de Boer, Thomas, Foley, Ryan J., Gall, Christa, Halford, Melissa R., Jones, David O., Langeroodi, Danial, Lin, Chien-Cheng, Magnier, Eugene A., McGill, Peter, O'Grady, Anna J. G., Pan, Yen-Chen, Ramirez-Ruiz, Enrico, Rest, Armin, Swift, Jonathan J., Tinyanont, Samaporn, Villar, V. Ashley, Wainscoat, Richard J., Wasserman, Amanda Rose, Yadavalli, S. Karthik, Yang, Grace
We present optical, ultraviolet, and infrared data of the type II supernova (SN II) 2020jfo at 14.5 Mpc. This wealth of multiwavelength data allows to compare different metrics commonly used to estimate progenitor masses of SN II for the same object.
Externí odkaz:
http://arxiv.org/abs/2307.00550
Autor:
Drout, M. R., Götberg, Y., Ludwig, B. A., Groh, J. H., de Mink, S. E., O'Grady, A. J. G., Smith, N.
The theory of binary evolution predicts that many massive stars should lose their hydrogen-rich envelopes via interaction with a companion -- revealing hot helium stars with masses of $\sim$2--8M$_{\odot}$. However, only one candidate system had been
Externí odkaz:
http://arxiv.org/abs/2307.00061
Autor:
O'Grady, Anna J. G., Drout, Maria R., Gaensler, B. M., Kochanek, C. S., Neugent, Kathryn F., Doherty, Carolyn L., Speagle, Joshua S., Shappee, B. J., Rauch, Michael, Götberg, Ylva, Ludwig, Bethany, Thompson, Todd A.
In previous work we identified a population of 38 cool and luminous variable stars in the Magellanic Clouds and examined 11 in detail in order to classify them as either Thorne-\.Zytkow Objects (T\.ZOs, red supergiants with a neutron star cores) or s
Externí odkaz:
http://arxiv.org/abs/2211.12438
Autor:
Aleo, P. D., Malanchev, K., Sharief, S., Jones, D. O., Narayan, G., Foley, R. J., Villar, V. A., Angus, C. R., Baldassare, V. F., Bustamante-Rosell, M. J., Chatterjee, D., Cold, C., Coulter, D. A., Davis, K. W., Dhawan, S., Drout, M. R., Engel, A., French, K. D., Gagliano, A., Gall, C., Hjorth, J., Huber, M. E., Jacobson-Galán, W. V., Kilpatrick, C. D., Langeroodi, D., Mandel, K. S., Margutti, R., Matasić, F., McGill, P., Pierel, J. D. R., Ramirez-Ruiz, E., Ransome, C. L., Rojas-Bravo, C., Siebert, M. R., Smith, K. W., de Soto, K. M., Stroh, M. C., Tinyanont, S., Taggart, K., Ward, S. M., Wojtak, R., Auchettl, K., Blanchard, P. K., de Boer, T. J. L., Boyd, B. M., Carroll, C. M., Chambers, K. C., DeMarchi, L., Dimitriadis, G., Dodd, S. A., Earl, N., Farias, D., Gao, H., Gomez, S., Grayling, M., Grillo, C., Hayes, E. E., Hung, T., Izzo, L., Khetan, N., Law-Smith, J. A. P., LeBaron, N., Lin, C. -C., Luo, Y., Magnier, E. A., Matthews, D., O'Grady, A. J. G., Pan, Y. -C., Politsch, C. A., Raimundo, S. I., Rest, A., Ridden-Harper, R., Sarangi, A., Smartt, S. J., Terreran, G., Thorp, S., Vazquez, J., Wainscoat, R. J., Wang, Q., Wasserman, A. R., Yadavalli, S. K., Yarza, R., Zenati, Y.
We present the Young Supernova Experiment Data Release 1 (YSE DR1), comprised of processed multi-color Pan-STARRS1 (PS1) griz and Zwicky Transient Facility (ZTF) gr photometry of 1975 transients with host-galaxy associations, redshifts, spectroscopic
Externí odkaz:
http://arxiv.org/abs/2211.07128
Autor:
Chan, H. S., Villar, V. Ashley, Cheung, S. H., Ho, Shirley, O'Grady, Anna J. G., Drout, Maria R., Renzo, Mathieu
Periodic variables illuminate the physical processes of stars throughout their lifetime. Wide-field surveys continue to increase our discovery rates of periodic variable stars. Automated approaches are essential to identify interesting periodic varia
Externí odkaz:
http://arxiv.org/abs/2112.03306
Autor:
O'Grady, Anna J. G., Drout, Maria R., Shappee, B. J., Bauer, Evan B., Fuller, Jim, Kochanek, C. S., Jayasinghe, T., Gaensler, B. M., Stanek, K. Z., Holoien, Thomas W. -S., Prieto, J. L., Thompson, Todd A.
Stars with unusual properties can provide a wealth of information about rare stages of stellar evolution and exotic physics. However, determining the true nature of peculiar stars is often difficult. In this work, we conduct a systematic search for c
Externí odkaz:
http://arxiv.org/abs/2008.06563
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