Zobrazeno 1 - 10
of 454
pro vyhledávání: '"Hosseinzadeh, G"'
Autor:
Yesmin, N., Pellegrino, C., Modjaz, M., Baer-Way, R., Howell, D. A., Arcavi, I., Farah, J., Hiramatsu, D., Hosseinzadeh, G., McCully, C., Newsome, M., Gonzalez, E. Padilla, Terreran, G., Jha, S.
Due to high-cadence automated surveys, we can now detect and classify supernovae (SNe) within a few days after explosion, if not earlier. Early-time spectra of young SNe directly probe the outermost layers of the ejecta, providing insights into the e
Externí odkaz:
http://arxiv.org/abs/2409.04522
Autor:
Jacobson-Galán, W. V., Dessart, L., Davis, K. W., Kilpatrick, C. D., Margutti, R., Foley, R. J., Chornock, R., Terreran, G., Hiramatsu, D., Newsome, M., Gonzalez, E. Padilla, Pellegrino, C., Howell, D. A., Filippenko, A. V., Anderson, J. P., Angus, C. R., Auchettl, K., Bostroem, K. A., Brink, T. G., Cartier, R., Coulter, D. A., de Boer, T., Drout, M. R., Earl, N., Ertini, K., Farah, J. R., Farias, D., Gall, C., Gao, H., Gerlach, M. A., Guo, F., Haynie, A., Hosseinzadeh, G., Ibik, A. L., Jha, S. W., Jones, D. O., Langeroodi, D., LeBaron, N, Magnier, E. A., Piro, A. L., Raimundo, S. I., Rest, A., Rest, S., Rich, R. Michael, Rojas-Bravo, C., Sears, H., Taggart, K., Villar, V. A., Wainscoat, R. J., Wang, X-F., Wasserman, A. R., Yan, S., Yang, Y., Zhang, J., Zheng, W.
We present ultraviolet/optical/near-infrared observations and modeling of Type II supernovae (SNe II) whose early-time ($\delta t < 2$ days) spectra show transient, narrow emission lines from shock ionization of confined ($r < 10^{15}$ cm) circumstel
Externí odkaz:
http://arxiv.org/abs/2403.02382
Autor:
Tartaglia, L., Sand, D. J., Valenti, S., Wyatt, S., Anderson, J. P., Arcavi, I., Ashall, C., Botticella, M. T., Cartier, R., Chen, T.-W., Cikota, A., Coulter, D., Valle, M. Della, Foley, R. J., Gal-Yam, A., Galbany, L., Gall, C., Haislip, J. B., Harmanen, J., Hosseinzadeh, G., Howell, D. A., Hsiao, E. Y., Inserra, C., Jha, S. W., Kankare, E., Kilpatrick, C. D., Kouprianov, V. V., Kuncarayakti, H., Maccarone, T. J., Maguire, K., Mattila, S., Mazzali, P. A., McCully, C., Melandri, A., Morrell, N., Phillips, M. M., Pignata, G., Piro, A. L., Prentice, S., Reichart, D. E., Rojas-Bravo, C., Smartt, S. J., Smith, K. W., Sollerman, J., Stritzinger, M. D., Sullivan, M., Taddia, F., Young, D. R.
We present our analysis of the Type II supernova DLT16am (SN 2016ija). The object was discovered during the ongoing D < 40 Mpc (DLT40) one-day cadence supernova search at r similar to 20.1 mag in the "edge-on" nearby (D = 20.0 +/- 4.0 Mpc) galaxy NGC
Externí odkaz:
http://hdl.handle.net/10150/626535
http://arizona.openrepository.com/arizona/handle/10150/626535
http://arizona.openrepository.com/arizona/handle/10150/626535
Autor:
Graham, M. L., Kumar, S., Hosseinzadeh, G., Hiramatsu, D., Arcavi, I., Howell, D. A., Valenti, S., Sand, D. J., Parrent, J. T., McCully, C., Filippenko, A. V.
We present late-time spectra of eight Type Ia supernovae (SNe Ia) obtained at > 200 d after peak brightness using the Gemini South and Keck telescopes. All of the SNe Ia in our sample were nearby, well separated from their host galaxy's light, and ha
Externí odkaz:
http://hdl.handle.net/10150/625965
http://arizona.openrepository.com/arizona/handle/10150/625965
http://arizona.openrepository.com/arizona/handle/10150/625965
Autor:
Gonzalez, E. Padilla, Howell, D. A., Terreran, G., McCully, C., Newsome, M., Burke, J., Farah, J., Pellegrino, C., Bostroem, K. A., Hosseinzadeh, G., Pearson, J., Sand, D. J., Shrestha, M., Smith, N., Dong, Y., Retamal, N. Meza, Valenti, S., Boos, S., Shen, K. J., Townsley, D., Galbany, L., Piscarreta, L., Foley, R. J., Bustamante-Rosell, M. J., Coulter, D. A., Chornock, R., Davis, K. W., Dickinson, C. B., Jones, D. O., Kutcka, J., Saux, X. K. Le, Rojas-Bravo, C. R., Taggart, K., Tinyanont, S., Yang, G., Jha, S. W., Margutti, R.
We present photometric and spectroscopic data for SN 2022joj, a nearby peculiar Type Ia supernova (SN Ia) with a fast decline rate ($\rm{\Delta m_{15,B}=1.4}$ mag). SN 2022joj shows exceedingly red colors, with a value of approximately ${B-V \approx
Externí odkaz:
http://arxiv.org/abs/2308.06334
Autor:
Graur, O., Gonzalez, E. Padilla, Burke, J., Deckers, M., Jha, S. W., Galbany, L., Karamenhmetoglu, E., Stritzinger, M. D., Maguire, K., Howell, D. A., Fisher, R., Fullard, A. G., Handberg, R., Hiramatsu, D., Hosseinzadeh, G., Kerzendorf, W. E., McCully, C., Newsome, M., Pellegrino, C., Rest, A., Riess, A. G., Seitenzahl, I. R., Shara, M. M., Shen, K. J., Terreran, G., Zurek, D. R.
Near-infrared (NIR) observations of normal Type Ia supernovae (SNe Ia) obtained between 150 to 500 d past maximum light reveal the existence of an extended plateau. Here, we present observations of the underluminous, 1991bg-like SN 2021qvv. Early, gr
Externí odkaz:
http://arxiv.org/abs/2306.12858
Autor:
Ailawadhi, B., Dastidar, R., Misra, K., Roy, R., Hiramatsu, D., Howell, D. A., Brink, T. G., Zheng, W., Galbany, L., Shahbandeh, M., Arcavi, I., Ashall, C., Bostroem, K. A., Burke, J., Chapman, T., Dimple, Filippenko, A. V., Gangopadhyay, A., Ghosh, A., Hoffman, A. M., Hosseinzadeh, G., Jennings, C., Jha, V. K., Kumar, A., Karamehmetoglu, E., McCully, C., McGinness, E., Müller-Bravo, T. E., Murakami, Y. S., Pandey, S. B., Pellegrino, C., Piscarreta, L., Rho, J., Stritzinger, M., Sunseri, J., Van Dyk, S. D., Yadav, L.
We present high-cadence photometric and spectroscopic observations of SN~2020jfo in ultraviolet and optical/near-infrared bands starting from $\sim 3$ to $\sim 434$ days after the explosion, including the earliest data with the 10.4\,m GTC. SN~2020jf
Externí odkaz:
http://arxiv.org/abs/2211.02823
The early lightcurves of Type Ia supernovae (SNe Ia) can be used to test predictions about their progenitor systems. If the progenitor system consists of a single white dwarf in a binary with a Roche-lobe-overflowing non-degenerate stellar companion,
Externí odkaz:
http://arxiv.org/abs/2208.11201
Autor:
Burke, J., Howell, D. A., Sand, D. J., Amaro, R. C., Brown, P. J., Andrews, J. E., Bostroem, K. A., Dong, Y., Haislip, J., Hiramatsu, D., Hosseinzadeh, G., Kouprianov, V., Lundquist, M. J., McCully, C., Pellegrino, C., Reichart, D., Tartaglia, L., Valenti, S., Yang, S.
If Type Ia supernovae (SNe~Ia) result from a white dwarf being ignited by Roche lobe overflow from a nondegenerate companion, then as the supernova explosion runs into the companion star its ejecta will be shocked, causing an early blue excess in the
Externí odkaz:
http://arxiv.org/abs/2207.07681
Autor:
Pellegrino, C., Howell, D. A., Terreran, G., Arcavi, I., Bostroem, K. A., Brown, P. J., Burke, J., Dong, Y., Gilkis, A., Hiramatsu, D., Hosseinzadeh, G., McCully, C., Modjaz, M., Newsome, M., Gonzalez, E. Padilla, Pritchard, T. A., Sand, D. J., Valenti, S., Williamson, M.
Publikováno v:
The Astrophysical Journal, Volume 938, page 73, 2020
We present a sample of Type Icn supernovae (SNe Icn), a newly-discovered class of transients characterized by their interaction with H- and He-poor circumstellar material (CSM). This sample is the largest collection of SNe Icn to date and includes ob
Externí odkaz:
http://arxiv.org/abs/2205.07894