Zobrazeno 1 - 10
of 406
pro vyhledávání: '"Graham, M. L."'
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:
Kelly, P. L., Brammer, G., Selsing, J., Foley, R. J., Hjorth, J., Rodney, S. A., Christensen, L., Strolger, L.-G., Filippenko, A. V., Treu, T., Steidel, C. C., Strom, A., Riess, A. G., Zitrin, A., Schmidt, K. B., Bradac, M., Jha, S. W., Graham, M. L., McCully, C., Graur, O., Weiner, B. J., Silverman, J. M., Taddia, F.
We have acquired Hubble Space Telescope (HST) and Very Large Telescope near-infrared spectra and images of supernova (SN) Refsdal after its discovery as an Einstein cross in fall 2014. The HST light curve of SN Refsdal has a shape consistent with the
Externí odkaz:
http://hdl.handle.net/10150/624069
http://arizona.openrepository.com/arizona/handle/10150/624069
http://arizona.openrepository.com/arizona/handle/10150/624069
Autor:
Graham, M. L., Kennedy, T. D., Kumar, S., Amaro, R. C., Sand, D. J., Jha, S. W., Galbany, L., Vinko, J., Wheeler, J. C., Hsiao, E. Y., Bostroem, K. A., Burke, J., Hiramatsu, D., Hosseinzadeh, G., McCully, C., Howell, D. A., Diamond, T., Hoeflich, P., Wang, X., Li, W.
The observed diversity in Type Ia supernovae (SNe Ia) -- the thermonuclear explosions of carbon-oxygen white dwarf stars used as cosmological standard candles -- is currently met with a variety of explosion models and progenitor scenarios. To help im
Externí odkaz:
http://arxiv.org/abs/2201.07864
Supernova Siblings and their Parent Galaxies in the Zwicky Transient Facility Bright Transient Surve
Autor:
Graham, M. L., Fremling, C., Perley, D. A., Biswas, R., Phillips, C. A., Sollerman, J., Nugent, P. E., Nance, S., Dhawan, S., Nordin, J., Goobar, A., Miller, A., Neill, J. D., Hall, X. J., Hankins, M. J., Duev, D. A., Kasliwal, M. M., Rigault, M., Bellm, E. C., Hale, D., Mróz, P., Kulkarni, S. R.
Supernova (SN) siblings -- two or more SNe in the same parent galaxy -- are useful tools for exploring progenitor stellar populations as well as properties of the host galaxies such as distance, star formation rate, dust extinction, and metallicity.
Externí odkaz:
http://arxiv.org/abs/2112.14819
Autor:
Sand, D. J., Sarbadhicary, S. K., Pellegrino, C., Misra, K., Dastidar, R., Brown, P. J., Itagaki, K., Valenti, S., Swift, J. J., Andrews, J. E., Bostroem, K. A., Burke, J., Chomiuk, L., Dong, Y., Galbany, L., Graham, M. L., Hiramatsu, D., Howell, D. A., Hsiao, E. Y., Janzen, D., Lundquist, M. J., McCully, C., Reichart, D., Smith, N., Wang, L., Wyatt, S.
We present deep Chandra X-ray observations of two nearby Type Ia supernovae, SN 2017cbv and SN 2020nlb, which reveal no X-ray emission down to a luminosity $L_X$$\lesssim$5.3$\times$10$^{37}$ and $\lesssim$5.4$\times$10$^{37}$ erg s$^{-1}$ (0.3--10 k
Externí odkaz:
http://arxiv.org/abs/2108.11407
Autor:
Wyatt, S. D., Sand, D. J., Hsiao, E. Y., Burns, C. R., Valenti, S., Bostroem, K. A., Lundquist, M., Galbany, L., Lu, J., Ashall, C., Diamond, T. R., Filippenko, A. V., Graham, M. L., Hoeflich, P., Kirshner, R. P., Krisciunas, K., Marion, G. H., Morrell, N. I., Persson, S. E., Phillips, M. M., Stritzinger, M. D., Suntzeff, N. B., Taddia, F.
Unburned carbon is potentially a powerful probe of Type Ia supernova (SN) explosion mechanisms. We present comprehensive optical and near-infrared (NIR) data on the "transitional" Type Ia SN 2015bp. An early NIR spectrum ($t = -$9.9 days with respect
Externí odkaz:
http://arxiv.org/abs/2012.02858
Autor:
Rho, J., Evans, A., Geballe, T. R., Banerjee, D. P. K., Hoeflich, P., Shahbandeh, M., Valenti, S., Yoon, S. -C., Jin, H., Williamson, M., Modjaz, M., Hiramatsu, D., Howell, D. A., Pellegrino, C., Vinko, J., Cartier, R., Burke, J., McCully, C., An, H., Cha, H., Pritchard, T., Wang, X., Andrews, J., Galbany, L., Graham, M. L., Blinnikov, S., Joshi, V., Pal, A., Kriskovics, L., Ordash, A., Sazkats, R., Vida, K., Chen, Z., Li, X., Zhang, J., Yan, S.
We present near-infrared and optical observations of the Type Ic Supernova (SN) 2020oi in the galaxy M100 and the broad-lined Type Ic SN2020bvc in UGC 9379, using Gemini, LCO, SOAR, and other ground-based telescopes. The near-IR spectrum of SN2020oi
Externí odkaz:
http://arxiv.org/abs/2010.00662
Autor:
Hsiao, E. Y., Hoeflich, P., Ashall, C., Lu, J., Contreras, C., Burns, C. R., Phillips, M. M., Galbany, L., Anderson, J. P., Baltay, C., Baron, E., Castellon, S., Davis, S., Freedman, Wendy L., Gall, C., Gonzalez, C., Graham, M. L., Hamuy, M., Holoien, T. W. -S., Karamehmetoglu, E., Krisciunas, K., Kumar, S., Kuncarayakti, H., Morrell, N., Moriya, T. J., Nugent, P. E., Perlmutter, S., Persson, S. E., Piro, A. L., Rabinowitz, D., Roth, M., Shahbandeh, M., Shappee, B. J., Stritzinger, M. D., Suntzeff, N. B., Taddia, F., Uddin, S. A.
The Type Ia supernova (SN Ia) LSQ14fmg exhibits exaggerated properties which may help to reveal the origin of the "super-Chandrasekhar" (or 03fg-like) group. The optical spectrum is typical of a 03fg-like SN Ia, but the light curves are unlike those
Externí odkaz:
http://arxiv.org/abs/2008.05614
Autor:
Kool, E. C., Karamehmetoglu, E., Sollerman, J., Schulze, S., Lunnan, R., Reynolds, T. M., Barbarino, C., Bellm, E. C., De, K., Duev, D. A., Fremling, C., Golkhou, V. Z., Graham, M. L., Green, D. A., Horesh, A., Kaye, S., Kim, Y. -L., Laher, R. R., Masci, F. J., Nordin, J., Perley, D. A., Phinney, E. S., Porter, M., Reiley, D., Rodriguez, H., van Roestel, J., Rusholme, B., Sharma, Y., Sfaradi, I., Soumagnac, M. T., Taggart, K., Tartaglia, L., Williams, D. R. A., Yan, L.
Publikováno v:
A&A 652, A136 (2021)
Context: Type Ibn supernovae are a rare class of stripped envelope supernovae interacting with a helium-rich CSM. The majority of the SNe Ibn reported display a surprising homogeneity in their fast lightcurves and starforming hosts. Aims: We present
Externí odkaz:
http://arxiv.org/abs/2008.04056
Autor:
Schmidt, S. J., Malz, A. I., Soo, J. Y. H., Almosallam, I. A., Brescia, M., Cavuoti, S., Cohen-Tanugi, J., Connolly, A. J., DeRose, J., Freeman, P. E., Graham, M. L., Iyer, K. G., Jarvis, M. J., Kalmbach, J. B., Kovacs, E., Lee, A. B., Longo, G., Morrison, C. B., Newman, J. A., Nourbakhsh, E., Nuss, E., Pospisil, T., Tranin, H., Wechsler, R. H., Zhou, R., Izbicki, R., Collaboration, The LSST Dark Energy Science
Publikováno v:
MNRAS 499 2 1587 (2020)
Many scientific investigations of photometric galaxy surveys require redshift estimates, whose uncertainty properties are best encapsulated by photometric redshift (photo-z) posterior probability density functions (PDFs). A plethora of photo-z PDF es
Externí odkaz:
http://arxiv.org/abs/2001.03621