Search Results - "Hiramatsu, D"

The tidal disruption event AT 2018hyz – I. Double-peaked emission lines and a flat Balmer decrement by Short, P, Nicholl, M, Lawrence, A, Gomez, S, Arcavi, I, Wevers, T, Leloudas, G, Schulze, S, Anderson, J P, Berger, E, Blanchard, P K, Burke, J, Segura, N Castro, Charalampopoulos, P, Chornock, R, Galbany, L, Gromadzki, M, Herzog, L J, Hiramatsu, D, Horne, Keith, Hosseinzadeh, G, Howell, D Andrew, Ihanec, N, Inserra, C, Kankare, E, Maguire, K, McCully, C, Müller Bravo, T E, Onori, F, Sollerman, J, Young, D R

“…ABSTRACT We present results from spectroscopic observations of AT 2018hyz, a transient discovered by the All-Sky Automated Survey for Supernova survey at an…”
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Nebular Spectroscopy of the "Blue Bump" Type Ia Supernova 2017cbv by Sand, D. J., Graham, M. L., Botyánszki, J., Hiramatsu, D., McCully, C., Valenti, S., Hosseinzadeh, G., Howell, D. A., Burke, J., Cartier, R., Diamond, T., Hsiao, E. Y., Jha, S. W., Kasen, D., Kumar, S., Marion, G. H., Suntzeff, N., Tartaglia, L., Wheeler, J. C., Wyatt, S.

“…We present nebular phase optical and near-infrared spectroscopy of the Type Ia supernova (SN) 2017cbv. The early light curves of SN 2017cbv showed a prominent…”
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Circumstellar Interaction Powers the Light Curves of Luminous Rapidly Evolving Optical Transients by Pellegrino, C., Howell, D. A., Vinkó, J., Gangopadhyay, A., Xiang, D., Arcavi, I., Brown, P., Burke, J., Hiramatsu, D., Hosseinzadeh, G., Li, Z., McCully, C., Misra, K., Newsome, M., Gonzalez, E. Padilla, Pritchard, T. A., Valenti, S., Wang, X., Zhang, T.

“…Abstract Rapidly evolving transients, or objects that rise and fade in brightness on timescales two to three times shorter than those of typical Type Ia or…”
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Near-infrared and Optical Observations of Type Ic SN 2020oi and Broad-lined Type Ic SN 2020bvc: Carbon Monoxide, Dust, and High-velocity Supernova Ejecta by 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., Vinkó, J., Cartier, R., Burke, J., McCully, C., An, H., Cha, H., Pritchard, T., Wang, X., Andrews, J., Galbany, L., Dyk, S. Van, Graham, M. L., Blinnikov, S., Joshi, V., Pál, A., Kriskovics, L., Ordasi, A., Szakats, R., Vida, K., Chen, Z., Li, X., Zhang, J., Yan, S.

“…Abstract We present near-IR (NIR) and optical observations of the Type Ic supernova (SN Ic) SN 2020oi in the galaxy M100 and the broad-lined SN Ic SN 2020bvc…”
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A Bright Ultraviolet Excess in the Transitional 02es-like Type Ia Supernova 2019yvq by Burke, J., Howell, D. A., Sarbadhicary, S. K., Sand, D. J., Amaro, R. C., Hiramatsu, D., McCully, C., Pellegrino, C., Andrews, J. E., Brown, P. J., Itagaki, Koichi, Shahbandeh, M., Bostroem, K. A., Chomiuk, L., Hsiao, E. Y., Smith, Nathan, Valenti, S.

“…Abstract We present photometric and spectroscopic observations of the nearby Type Ia SN 2019yvq, from its discovery ∼1 day after explosion to ∼100 days after…”
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The Diverse Properties of Type Icn Supernovae Point to Multiple Progenitor Channels by 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.

“…Abstract 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…”
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Nebular-phase spectra of nearby Type Ia Supernovae by 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.

“…Abstract 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…”
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SN 2020bio: A Double-peaked, H-poor Type IIb Supernova with Evidence of Circumstellar Interaction by Pellegrino, C., Hiramatsu, D., Arcavi, I., Howell, D. A., Bostroem, K. A., Brown, P. J., Burke, J., Elias-Rosa, N., Itagaki, K., Kaneda, H., McCully, C., Modjaz, M., Gonzalez, E. Padilla, Pritchard, T. A., Yesmin, N.

“…Abstract We present photometric and spectroscopic observations of SN 2020bio, a double-peaked Type IIb supernova (SN) discovered within a day of explosion,…”
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An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz by Nicholl, M, Wevers, T, Oates, S R, Alexander, K D, Leloudas, G, Onori, F, Jerkstrand, A, Gomez, S, Campana, S, Arcavi, I, Charalampopoulos, P, Gromadzki, M, Ihanec, N, Jonker, P G, Lawrence, A, Mandel, I, Schulze, S, Short, P, Burke, J, McCully, C, Hiramatsu, D, Howell, D A, Pellegrino, C, Abbot, H, Anderson, J P, Berger, E, Blanchard, P K, Cannizzaro, G, Chen, T-W, Dennefeld, M, Galbany, L, González-Gaitán, S, Hosseinzadeh, G, Inserra, C, Irani, I, Kuin, P, Müller-Bravo, T, Pineda, J, Ross, N P, Roy, R, Smartt, S J, Smith, K W, Tucker, B, Wyrzykowski, Ł, Young, D R

“…ABSTRACT At 66 Mpc, AT2019qiz is the closest optical tidal disruption event (TDE) to date, with a luminosity intermediate between the bulk of the population…”
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Nebular-phase spectra of Type Ia supernovae from the Las Cumbres Observatory Global Supernova Project by 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

“…ABSTRACT The observed diversity in Type Ia supernovae (SNe Ia) – the thermonuclear explosions of carbon–oxygen white dwarf stars used as cosmological standard…”
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Discovery and Rapid Follow-up Observations of the Unusual Type II SN 2018ivc in NGC 1068 by Bostroem, K. A., Valenti, S., Sand, D. J., Andrews, J. E., Van Dyk, S. D., Galbany, L., Pooley, D., Amaro, R. C., Smith, N., Yang, S., Anupama, G. C., Arcavi, I., Baron, E., Brown, P. J., Burke, J., Cartier, R., Hiramatsu, D., Dastidar, R., DerKacy, J. M., Dong, Y., Egami, E., Ertel, S., Filippenko, A. V., Fox, O. D., Haislip, J., Hosseinzadeh, G., Howell, D. A., Gangopadhyay, A., Jha, S. W., Kouprianov, V., Kumar, B., Lundquist, M., Milisavljevic, D., McCully, C., Milne, P., Misra, K., Reichart, D. E., Sahu, D. K., Sai, H., Singh, A., Smith, P. S., Vinko, J., Wang, X., Wang, Y., Wheeler, J. C., Williams, G. G., Wyatt, S., Zhang, J., Zhang, X.

“…We present the discovery and high-cadence follow-up observations of SN 2018ivc, an unusual SNe II that exploded in NGC 1068 (D = 10.1 Mpc). The light curve of…”
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Accretion disc cooling and narrow absorption lines in the tidal disruption event AT 2019dsg by Cannizzaro, G, Wevers, T, Jonker, P G, Pérez-Torres, M A, Moldon, J, Mata-Sánchez, D, Leloudas, G, Pasham, D R, Mattila, S, Arcavi, I, Decker French, K, Onori, F, Inserra, C, Nicholl, M, Gromadzki, M, Chen, T-W, Müller-Bravo, T E, Short, P, Anderson, J P, Young, D R, Gendreau, K C, Arzoumanian, Z, Löwenstein, M, Remillard, R, Roy, R, Hiramatsu, D

“…ABSTRACT We present the results of a large multiwavelength follow-up campaign of the tidal disruption event (TDE) AT 2019dsg, focusing on low to high…”
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Peculiar Spectral Evolution of the Type I Supernova 2019eix: A Possible Double Detonation from a Helium Shell on a Sub-Chandrasekhar-mass White Dwarf by Padilla Gonzalez, E., Howell, D. Andrew, Burke, J., Dong, Yize, Hiramatsu, D., McCully, C., Pellegrino, C., Kerzendorf, W., Modjaz, M., Terreran, G., Williamson, M.

“…Abstract We present photometric and spectroscopic data for the nearby Type I supernova (SN Ia) 2019eix (originally classified as an SN Ic), from the day of its…”
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The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object by Gutiérrez, C P, Bersten, M C, Orellana, M, Pastorello, A, Ertini, K, Folatelli, G, Pignata, G, Anderson, J P, Smartt, S, Sullivan, M, Pursiainen, M, Inserra, C, Elias-Rosa, N, Fraser, M, Kankare, E, Moran, S, Reguitti, A, Reynolds, T M, Stritzinger, M, Burke, J, Frohmaier, C, Galbany, L, Hiramatsu, D, Howell, D A, Kuncarayakti, H, Mattila, S, Müller-Bravo, T, Pellegrino, C, Smith, M

“…ABSTRACT We present the photometric and spectroscopic evolution of supernova (SN) 2019cad during the first ∼100 d from explosion. Based on the light-curve…”
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SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements by Pierel, J. D. R., Jones, D. O., Kenworthy, W. D., Dai, M., Kessler, R., Ashall, C., Do, A., Peterson, E. R., Shappee, B. J., Siebert, M. R., Barna, T., Brink, T. G., Burke, J., Calamida, A., Camacho-Neves, Y., Jaeger, T. de, Filippenko, A. V., Foley, R. J., Galbany, L., Fox, O. D., Gomez, S., Hiramatsu, D., Hounsell, R., Howell, D. A., Jha, S. W., Kwok, L. A., Pérez-Fournon, I., Poidevin, F., Rest, A., Rubin, D., Scolnic, D. M., Shirley, R., Strolger, L. G., Tinyanont, S., Wang, Q.

“…Abstract A large fraction of Type Ia supernova (SN Ia) observations over the next decade will be in the near-infrared (NIR), at wavelengths beyond the reach of…”
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SN 2017gci: a nearby Type I Superluminous Supernova with a bumpy tail by Fiore, A, Chen, T-W, Jerkstrand, A, Benetti, S, Ciolfi, R, Inserra, C, Cappellaro, E, Pastorello, A, Leloudas, G, Schulze, S, Berton, M, Burke, J, McCully, C, Fong, W, Galbany, L, Gromadzki, M, Gutiérrez, C P, Hiramatsu, D, Hosseinzadeh, G, Howell, D A, Kankare, E, Lunnan, R, Müller-Bravo, T E, O’ Neill, D, Nicholl, M, Rau, A, Sollerman, J, Terreran, G, Valenti, S, Young, D R

“…ABSTRACT We present and discuss the optical spectrophotometric observations of the nearby (z = 0.087) Type I superluminous supernova (SLSN I) SN 2017gci, whose…”
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Constraining the Source of the High-velocity Ejecta in Type Ia SN 2019ein by Pellegrino, C., Howell, D. A., Sarbadhicary, S. K., Burke, J., Hiramatsu, D., McCully, C., Milne, P. A., Andrews, J. E., Brown, P., Chomiuk, L., Hsiao, E. Y., Sand, D. J., Shahbandeh, M., Smith, N., Valenti, S., Vinkó, J., Wheeler, J. C., Wyatt, S., Yang, Y.

“…We present multiwavelength photometric and spectroscopic observations of SN 2019ein, a high-velocity Type Ia supernova (SN Ia) discovered in the nearby galaxy…”
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SN 2017ivv: two years of evolution of a transitional Type II supernova by Gutiérrez, C P, Pastorello, A, Jerkstrand, A, Galbany, L, Sullivan, M, Anderson, J P, Taubenberger, S, Kuncarayakti, H, González-Gaitán, S, Wiseman, P, Inserra, C, Fraser, M, Maguire, K, Smartt, S, Müller-Bravo, T E, Arcavi, I, Benetti, S, Bersier, D, Bose, S, Bostroem, K A, Burke, J, Chen, P, Chen, T-W, Della Valle, M, Dong, Subo, Gal-Yam, A, Gromadzki, M, Hiramatsu, D, Holoien, T W-S, Hosseinzadeh, G, Howell, D A, Kankare, E, Kochanek, C S, McCully, C, Nicholl, M, Pignata, G, Prieto, J L, Shappee, B, Taggart, K, Tomasella, L, Valenti, S, Young, D R

“…ABSTRACT We present the photometric and spectroscopic evolution of the Type II supernova (SN II) SN 2017ivv (also known as ASASSN-17qp). Located in an…”
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Low luminosity Type II supernovae – IV. SN 2020cxd and SN 2021aai, at the edges of the sub-luminous supernovae class by Valerin, G, Pumo, M L, Pastorello, A, Reguitti, A, Elias–Rosa, N, Gútierrez, C P, Kankare, E, Fraser, M, Mazzali, P A, Howell, D A, Kotak, R, Galbany, L, Williams, S C, Cai, Y-Z, Salmaso, I, Pinter, V, Müller-Bravo, T E, Burke, J, Padilla Gonzalez, E, Hiramatsu, D, McCully, C, Newsome, M, Pellegrino, C

“…ABSTRACT Photometric and spectroscopic data for two Low Luminosity Type IIP Supernovae (LL SNe IIP) 2020cxd and 2021aai are presented. SN 2020cxd was…”
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Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb by Sand, D. J., Sarbadhicary, S. K., Pellegrino, C., Misra, K., Dastidar, R., Brown, P. J., Itagaki, K., Valenti, S., Swift, Jonathan 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., Jencson, J. E., Lundquist, M. J., McCully, C., Reichart, D., Smith, Nathan, Wang, Lingzhi, Wyatt, S.

“…Abstract 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…”
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