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54. RADIO OBSERVATIONS REVEAL A SMOOTH CIRCUMSTELLAR ENVIRONMENT AROUND THE EXTRAORDINARY TYPE Ib SUPERNOVA 2012au

Author

Kamble, Atish, Soderberg, Alicia M., Chomiuk, Laura, Margutti, Raffaella, Medvedev, Mikhail, Milisavljevic, Dan, Chakraborti, Sayan, Chevalier, Roger, Chugai, Nikolai, Dittmann, Jason, Drout, Maria, Fransson, Claes, Nakar, Ehud, Sanders, Nathan, Kamble, Atish, Soderberg, Alicia M., Chomiuk, Laura, Margutti, Raffaella, Medvedev, Mikhail, Milisavljevic, Dan, Chakraborti, Sayan, Chevalier, Roger, Chugai, Nikolai, Dittmann, Jason, Drout, Maria, Fransson, Claes, Nakar, Ehud, and Sanders, Nathan

Abstract

We present extensive radio and X-ray observations of SN 2012au, an energetic, radio-luminous supernova of Type Ib that exhibits multi-wavelength properties bridging subsets of hydrogen-poor superluminous supernovae, hypernovae, and normal core-collapse supernovae. The observations closely follow models of synchrotron emission from a shock-heated circumburst medium that has a wind density profile (rho alpha r(-2)). We infer a sub-relativistic velocity for the shock wave v approximate to 0.2 c and a radius of r approximate to 1.4 x 10(16) cm at 25 days after the estimated date of explosion. For a wind velocity of 1000 km s(-1), we determine the mass-loss rate of the progenitor to be M = 3.6 x 10(-6) M-circle dot yr(-1), consistent with the estimates from X-ray observations. We estimate the total internal energy of the radio-emitting material to be E approximate to 10(47) crg, which is intermediate to SN 1998bw and SN 2002ap. The evolution of the radio light curve of SN 2012au is in agreement with its interaction with a smoothly distributed circumburst medium and the absence of stellar shells ejected from previous outbursts out to r approximate to 10(17) cm from the supernova site. We conclude that the bright radio emission from SN 2012au was not dissimilar from other core-collapse supernovae despite its extraordinary optical properties, and that the evolution of the SN 2012au progenitor star was relatively quiet, marked with a steady mass loss, during the final years preceding explosion., AuthorCount:14

Published
2014
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55. RADIO OBSERVATIONS REVEAL A SMOOTH CIRCUMSTELLAR ENVIRONMENT AROUND THE EXTRAORDINARY TYPE Ib SUPERNOVA 2012au

Author

Kamble, Atish, primary, Soderberg, Alicia M., additional, Chomiuk, Laura, additional, Margutti, Raffaella, additional, Medvedev, Mikhail, additional, Milisavljevic, Dan, additional, Chakraborti, Sayan, additional, Chevalier, Roger, additional, Chugai, Nikolai, additional, Dittmann, Jason, additional, Drout, Maria, additional, Fransson, Claes, additional, Nakar, Ehud, additional, and Sanders, Nathan, additional

Published
2014
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57. INTERACTION BETWEEN THE BROAD-LINED TYPE Ic SUPERNOVA 2012ap AND CARRIERS OF DIFFUSE INTERSTELLAR BANDS

Author

Milisavljevic, Dan, primary, Margutti, Raffaella, additional, Crabtree, Kyle N., additional, Foster, Jonathan B., additional, Soderberg, Alicia M., additional, Fesen, Robert A., additional, Parrent, Jerod T., additional, Sanders, Nathan E., additional, Drout, Maria R., additional, Kamble, Atish, additional, Chakraborti, Sayan, additional, Pickering, Timothy E., additional, Cenko, S. Bradley, additional, Silverman, Jeffrey M., additional, Filippenko, Alexei V., additional, Kirshner, Robert P., additional, Mazzali, Paolo, additional, Maeda, Keiichi, additional, Marion, G. H. Howie, additional, Vinko, Jozsef, additional, and Wheeler, J. Craig, additional

Published
2014
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58. TYPE IIb SUPERNOVA SN 2011dh: SPECTRA AND PHOTOMETRY FROM THE ULTRAVIOLET TO THE NEAR-INFRARED

Author

Marion, G. H., primary, Vinko, Jozsef, additional, Kirshner, Robert P., additional, Foley, Ryan J., additional, Berlind, Perry, additional, Bieryla, Allyson, additional, Bloom, Joshua S., additional, Calkins, Michael L., additional, Challis, Peter, additional, Chevalier, Roger A., additional, Chornock, Ryan, additional, Culliton, Chris, additional, Curtis, Jason L., additional, Esquerdo, Gilbert A., additional, Everett, Mark E., additional, Falco, Emilio E., additional, France, Kevin, additional, Fransson, Claes, additional, Friedman, Andrew S., additional, Garnavich, Peter, additional, Leibundgut, Bruno, additional, Meyer, Samuel, additional, Smith, Nathan, additional, Soderberg, Alicia M., additional, Sollerman, Jesper, additional, Starr, Dan L., additional, Szklenar, Tamas, additional, Takats, Katalin, additional, and Wheeler, J. Craig, additional

Published
2014
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59. MULTI-WAVELENGTH OBSERVATIONS OF SUPERNOVA 2011ei : TIME-DEPENDENT CLASSIFICATION OF TYPE IIb AND Ib SUPERNOVAE AND IMPLICATIONS FOR THEIR PROGENITORS

Author

Milisavljevic, Dan, Margutti, Raffaella, Soderberg, Alicia M., Pignata, Giuliano, Chomiuk, Laura, Fesen, Robert A., Bufano, Filomena, Sanders, Nathan E., Parrent, Jerod T., Parker, Stuart, Mazzali, Paolo, Pian, Elena, Pickering, Timothy, Buckley, David A. H., Crawford, Steven M., Gulbis, Amanda A. S., Hettlage, Christian, Hooper, Eric, Nordsieck, Kenneth H., O'Donoghue, Darragh, Husser, Tim-Oliver, Potter, Stephen, Kniazev, Alexei, Kotze, Paul, Romero-Colmenero, Encarni, Vaisanen, Petri, Wolf, Marsha, Bietenholz, Michael F., Bartel, Norbert, Fransson, Claes, Walker, Emma S., Brunthaler, Andreas, Chakraborti, Sayan, Levesque, Emily M., MacFadyen, Andrew, Drescher, Colin, Bock, Greg, Marples, Peter, Anderson, Joseph P., Benetti, Stefano, Reichart, Daniel, Ivarsen, Kevin, Milisavljevic, Dan, Margutti, Raffaella, Soderberg, Alicia M., Pignata, Giuliano, Chomiuk, Laura, Fesen, Robert A., Bufano, Filomena, Sanders, Nathan E., Parrent, Jerod T., Parker, Stuart, Mazzali, Paolo, Pian, Elena, Pickering, Timothy, Buckley, David A. H., Crawford, Steven M., Gulbis, Amanda A. S., Hettlage, Christian, Hooper, Eric, Nordsieck, Kenneth H., O'Donoghue, Darragh, Husser, Tim-Oliver, Potter, Stephen, Kniazev, Alexei, Kotze, Paul, Romero-Colmenero, Encarni, Vaisanen, Petri, Wolf, Marsha, Bietenholz, Michael F., Bartel, Norbert, Fransson, Claes, Walker, Emma S., Brunthaler, Andreas, Chakraborti, Sayan, Levesque, Emily M., MacFadyen, Andrew, Drescher, Colin, Bock, Greg, Marples, Peter, Anderson, Joseph P., Benetti, Stefano, Reichart, Daniel, and Ivarsen, Kevin

Abstract

We present X-ray, UV/optical, and radio observations of the stripped-envelope, core-collapse supernova (SN) 2011ei, one of the least luminous SNe IIb or Ib observed to date. Our observations begin with a discovery within similar to 1 day of explosion and span several months afterward. Early optical spectra exhibit broad, Type II-like hydrogen Balmer profiles that subside rapidly and are replaced by Type Ib-like He-rich features on a timescale of one week. High-cadence monitoring of this transition suggests absorption attributable to a high-velocity (greater than or similar to 12,000 km s(-1)) H-rich shell, which is likely present in many Type Ib events. Radio observations imply a shock velocity of v approximate to 0.13 c and a progenitor star average mass-loss rate of (M) over dot approximate to 1.4 x 10(-5) M-circle dot yr(-1) (assuming wind velocity v(w) = 10(3) km s(-1)). This is consistent with independent constraints from deep X-ray observations with Swift-XRT and Chandra. Overall, the multi-wavelength properties of SN 2011ei are consistent with the explosion of a lower-mass (3-4 M-circle dot), compact (R-* less than or similar to 1 x 10(11) cm), He-core star. The star retained a thin hydrogen envelope at the time of explosion, and was embedded in an inhomogeneous circumstellar wind suggestive of modest episodic mass loss. We conclude that SN 2011ei's rapid spectral metamorphosis is indicative of time-dependent classifications that bias estimates of the relative explosion rates for Type IIb and Ib objects, and that important information about a progenitor star's evolutionary state and mass loss immediately prior to SN explosion can be inferred from timely multi-wavelength observations., AuthorCount:42

Published
2013
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60. ON THE SOURCE OF THE DUST EXTINCTION IN TYPE Ia SUPERNOVAE AND THE DISCOVERY OF ANOMALOUSLY STRONG Na I ABSORPTION

Author

Phillips, M. M., primary, Simon, Joshua D., additional, Morrell, Nidia, additional, Burns, Christopher R., additional, Cox, Nick L. J., additional, Foley, Ryan J., additional, Karakas, Amanda I., additional, Patat, F., additional, Sternberg, A., additional, Williams, R. E., additional, Gal-Yam, A., additional, Hsiao, E. Y., additional, Leonard, D. C., additional, Persson, Sven E., additional, Stritzinger, Maximilian, additional, Thompson, I. B., additional, Campillay, Abdo, additional, Contreras, Carlos, additional, Folatelli, Gastón, additional, Freedman, Wendy L., additional, Hamuy, Mario, additional, Roth, Miguel, additional, Shields, Gregory A., additional, Suntzeff, Nicholas B., additional, Chomiuk, Laura, additional, Ivans, Inese I., additional, Madore, Barry F., additional, Penprase, B. E., additional, Perley, Daniel, additional, Pignata, G., additional, Preston, G., additional, and Soderberg, Alicia M., additional

Published
2013
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61. Evidence for type ia supernova diversity from ultraviolet observations with the hubble space telescope

Author

Wang, Xiaofeng, Wang, Lifan, Filippenko, Alexei V., Baron, Eddie, Kromer, Markus, Jack, Dennis, Zhang, Tianmeng, Aldering, Greg, Antilogus, Pierre, Arnett, W. David, Baade, Dietrich, Barris, Brian J., Benetti, Stefano, Bouchet, Patrice, Burrows, Adam S., Canal, Ramon, Cappellaro, Enrico, Carlberg, Raymond G., di Carlo, Elisa, Challis, Peter J., Crotts, Arlin P. S., Danziger, John I., Della Valle, Massimo, Fink, Michael, Foley, Ryan J., Fransson, Claes, Gal-Yam, Avishay, Garnavich, Peter M., Gerardy, Chris L., Goldhaber, Gerson, Hamuy, Mario, Hillebrandt, Wolfgang, Hoeflich, Peter, Holland, Stephen T., Holz, Daniel E., Hughes, John P., Jeffery, David J., Jha, Saurabh W., Kasen, Dan, Khokhlov, Alexei M., Kirshner, Robert P., Knop, Robert A., Kozma, Cecilia, Krisciunas, Kevin, Lee, Brian C., Leibundgut, Bruno, Lentz, Eric J., Leonard, Douglas C., Lewin, Walter H. G., Li, Weidong, Livio, Mario, Lundqvist, Peter, Maoz, Dan, Matheson, Thomas, Mazzali, Paolo A., Meikle, Peter, Miknaitis, Gajus, Milne, Peter A., Mochnacki, Stefan W., Nomoto, Ken'ichi, Nugent, Peter E., Oran, Elaine S., Panagia, Nino, Perlmutter, Saul, Phillips, Mark M., Pinto, Philip, Poznanski, Dovi, Pritchet, Christopher J., Reinecke, Martin, Riess, Adam G., Ruiz-Lapuente, Pilar, Scalzo, Richard A., Schlegel, Eric M., Schmidt, Brian P., Siegrist, James, Soderberg, Alicia M., Sollerman, Jesper, Sonneborn, George, Spadafora, Anthony, Spyromilio, Jason, Sramek, Richard A., Starrfield, Sumner G., Strolger, Louis G., Suntzeff, Nicholas B., Thomas, Rollin C., Tonry, John L., Tornambe, Amedeo, Truran, James W., Turatto, Massimo, Turner, Michael, Van Dyk, Schuyler D., Weiler, Kurt W., Wheeler, J. Craig, Wood-Vasey, Michael, Woosley, Stanford E., Yamaoka, Hitoshi, Wang, Xiaofeng, Wang, Lifan, Filippenko, Alexei V., Baron, Eddie, Kromer, Markus, Jack, Dennis, Zhang, Tianmeng, Aldering, Greg, Antilogus, Pierre, Arnett, W. David, Baade, Dietrich, Barris, Brian J., Benetti, Stefano, Bouchet, Patrice, Burrows, Adam S., Canal, Ramon, Cappellaro, Enrico, Carlberg, Raymond G., di Carlo, Elisa, Challis, Peter J., Crotts, Arlin P. S., Danziger, John I., Della Valle, Massimo, Fink, Michael, Foley, Ryan J., Fransson, Claes, Gal-Yam, Avishay, Garnavich, Peter M., Gerardy, Chris L., Goldhaber, Gerson, Hamuy, Mario, Hillebrandt, Wolfgang, Hoeflich, Peter, Holland, Stephen T., Holz, Daniel E., Hughes, John P., Jeffery, David J., Jha, Saurabh W., Kasen, Dan, Khokhlov, Alexei M., Kirshner, Robert P., Knop, Robert A., Kozma, Cecilia, Krisciunas, Kevin, Lee, Brian C., Leibundgut, Bruno, Lentz, Eric J., Leonard, Douglas C., Lewin, Walter H. G., Li, Weidong, Livio, Mario, Lundqvist, Peter, Maoz, Dan, Matheson, Thomas, Mazzali, Paolo A., Meikle, Peter, Miknaitis, Gajus, Milne, Peter A., Mochnacki, Stefan W., Nomoto, Ken'ichi, Nugent, Peter E., Oran, Elaine S., Panagia, Nino, Perlmutter, Saul, Phillips, Mark M., Pinto, Philip, Poznanski, Dovi, Pritchet, Christopher J., Reinecke, Martin, Riess, Adam G., Ruiz-Lapuente, Pilar, Scalzo, Richard A., Schlegel, Eric M., Schmidt, Brian P., Siegrist, James, Soderberg, Alicia M., Sollerman, Jesper, Sonneborn, George, Spadafora, Anthony, Spyromilio, Jason, Sramek, Richard A., Starrfield, Sumner G., Strolger, Louis G., Suntzeff, Nicholas B., Thomas, Rollin C., Tonry, John L., Tornambe, Amedeo, Truran, James W., Turatto, Massimo, Turner, Michael, Van Dyk, Schuyler D., Weiler, Kurt W., Wheeler, J. Craig, Wood-Vasey, Michael, Woosley, Stanford E., and Yamaoka, Hitoshi

Abstract

We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Surveys on the Hubble Space Telescope. This data set provides unique spectral time series down to 2000 angstrom. Significant diversity is seen in the near-maximum-light spectra (similar to 2000-3500 angstrom) for this small sample. The corresponding photometric data, together with archival data from Swift Ultraviolet/Optical Telescope observations, provide further evidence of increased dispersion in the UV emission with respect to the optical. The peak luminositiesmeasured in the uvw1/F250W filter are found to correlate with the B-band light-curve shape parameter Delta m(15)(B), but with much larger scatter relative to the correlation in the broadband B band (e.g., similar to 0.4 mag versus similar to 0.2 mag for those with 0.8 mag < Delta m(15)(B) < 1.7 mag). SN 2004dt is found as an outlier of this correlation (at > 3 sigma), being brighter than normal SNe Ia such as SN 2005cf by similar to 0.9 mag and similar to 2.0 mag in the uvw1/F250W and uvm2/F220W filters, respectively. We show that different progenitor metallicity or line-expansion velocities alone cannot explain such a large discrepancy. Viewing-angle effects, such as due to an asymmetric explosion, may have a significant influence on the flux emitted in the UV region. Detailed modeling is needed to disentangle and quantify the above effects., AuthorCount:96

Published
2012
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62. SN 2012au: A GOLDEN LINK BETWEEN SUPERLUMINOUS SUPERNOVAE AND THEIR LOWER-LUMINOSITY COUNTERPARTS

Author

Milisavljevic, Dan, primary, Soderberg, Alicia M., additional, Margutti, Raffaella, additional, Drout, Maria R., additional, Marion, G. Howie, additional, Sanders, Nathan E., additional, Hsiao, Eric Y., additional, Lunnan, Ragnhild, additional, Chornock, Ryan, additional, Fesen, Robert A., additional, Parrent, Jerod T., additional, Levesque, Emily M., additional, Berger, Edo, additional, Foley, Ryan J., additional, Challis, Pete, additional, Kirshner, Robert P., additional, Dittmann, Jason, additional, Bieryla, Allyson, additional, Kamble, Atish, additional, Chakraborti, Sayan, additional, De Rosa, Gisella, additional, Fausnaugh, Michael, additional, Hainline, Kevin N., additional, Chen, Chien-Ting, additional, Hickox, Ryan C., additional, Morrell, Nidia, additional, Phillips, Mark M., additional, and Stritzinger, Maximilian, additional

Published
2013
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63. MULTI-WAVELENGTH OBSERVATIONS OF SUPERNOVA 2011ei: TIME-DEPENDENT CLASSIFICATION OF TYPE IIb AND Ib SUPERNOVAE AND IMPLICATIONS FOR THEIR PROGENITORS

Author

Milisavljevic, Dan, primary, Margutti, Raffaella, additional, Soderberg, Alicia M., additional, Pignata, Giuliano, additional, Chomiuk, Laura, additional, Fesen, Robert A., additional, Bufano, Filomena, additional, Sanders, Nathan E., additional, Parrent, Jerod T., additional, Parker, Stuart, additional, Mazzali, Paolo, additional, Pian, Elena, additional, Pickering, Timothy, additional, Buckley, David A. H., additional, Crawford, Steven M., additional, Gulbis, Amanda A. S., additional, Hettlage, Christian, additional, Hooper, Eric, additional, Nordsieck, Kenneth H., additional, O’Donoghue, Darragh, additional, Husser, Tim-Oliver, additional, Potter, Stephen, additional, Kniazev, Alexei, additional, Kotze, Paul, additional, Romero-Colmenero, Encarni, additional, Vaisanen, Petri, additional, Wolf, Marsha, additional, Bietenholz, Michael F., additional, Bartel, Norbert, additional, Fransson, Claes, additional, Walker, Emma S., additional, Brunthaler, Andreas, additional, Chakraborti, Sayan, additional, Levesque, Emily M., additional, MacFadyen, Andrew, additional, Drescher, Colin, additional, Bock, Greg, additional, Marples, Peter, additional, Anderson, Joseph P., additional, Benetti, Stefano, additional, Reichart, Daniel, additional, and Ivarsen, Kevin, additional

Published
2013
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65. The Radio Properties of Type Ibc Supernovae

Author

Immler, Stefan, Weiler, Kurt, McCray, Richard, Soderberg, Alicia M., Immler, Stefan, Weiler, Kurt, McCray, Richard, and Soderberg, Alicia M.

Abstract

Over the past few years, long-duration gamma-ray bursts (GRBs), including the subclass of X-ray flashes (XRFs), have been revealed to be a rare variety of Type Ibc supernova (SN Ibc). While all these events result from the death of massive stars, the electromagnetic luminosities of GRBs and XRFs exceed those of ordinary Type Ibc SNe by many orders of magnitude. The observed diversity of stellar death corresponds to large variations in the energy, velocity, and geometry of the explosion ejecta. Using multi-wavelength (radio, optical, X-ray) observations of the nearest GRBs, XRFs, and SNe Ibc, I show that while GRBs and XRFs couple at least ~10^48 erg to relativistic material, SNe Ibc typically couple <~10^48 erg to their fastest (albeit non-relativistic) outflows. Specifically, I find that less than 3% of local SNe Ibc show any evidence for association with a GRB or XRF Recently, a new class of GRBs and XRFs has been revealed which are under-luminous in comparison with the statistical sample of GRBs. Owing to their faint high-energy emission, these sub-energetic bursts are only detectable nearby (z<~0.1) and are likely 10 times more common than cosmological GRBs. In comparison with local SNe Ibc and typical GRBs/XRFs, these explosions are intermediate in terms of both volumetric rate and energetics. Yet the essential physical process that causes a dying star to produce a GRB, XRF, or sub-energetic burst, and not just a SN, remains a crucial open question. Progress requires a detailed understanding of ordinary SNe Ibc which will be facilitated with the launch of wide-field optical surveys in the near future.

Published
2007

66. A Broader Perspective on the GRB-SN Connection

Author

Holt, Stephen S., Gehrels, Neil, Nousek, John A., Soderberg, Alicia M., Holt, Stephen S., Gehrels, Neil, Nousek, John A., and Soderberg, Alicia M.

Abstract

Over the last few years our understanding of local Type Ibc supernovae and their connection to long-duration gamma-ray bursts has been revolutionized. Recent discoveries have shown that the emerging picture for core-collapse explosions is one of diversity. Compiling data from our dedicated radio survey of SNe Ibc and our comprehensive HST survey of GRB-SNe together with ground-based follow-up campaigns, I review our current understanding of the GRB-SN connection. In particular, I compare local SNe Ibc with GRB-SNe based on the following criteria: (1) the distribution of optical peak magnitudes which serve as a proxy for the mass of 56Ni produced in the explosion, (2) radio luminosity at early time (few days to weeks) which provides a measure of the energy coupled to on-axis relativistic ejecta, and (3) radio luminosity at late time (several years) which constrains the emission from GRB jets initially directed away from our line-of-sight. By focusing on these three points, I will describe the complex picture of stellar death that is emerging.

Published
2006

67. A Most Energetic Type Ic Supernova: SN 2003L

Author

Marcaide, Juan-María, Weiler, Kurt W., Soderberg, Alicia M., Marcaide, Juan-María, Weiler, Kurt W., and Soderberg, Alicia M.

Abstract

We present extensive radio observations of SN2003L, the most luminous and energetic Type Ic radio supernova with the exception of SN 1998bw. Using radio data, we are able to constrain the physical parameters of the supernova, including the velocity and energy of the fastest ejecta, the temporal evolution of the magnetic field, and the density profile of the surrounding medium. We highlight the extraordinary properties of the radio emission with respect to the supernova’s normal characteristics within optical bands. We find that although the explosion does not show evidence for a significant amount of relativistic ejecta, it produces a radio luminosity which is comparable to that seen in the unusual SN1998bw. Using SN2003L as an example, we comment briefly on the broad diversity of type Ic properties and the associated implications for progenitor models.

Published
2005

69. CALTECH CORE-COLLAPSE PROJECT (CCCP) OBSERVATIONS OF TYPE II SUPERNOVAE: EVIDENCE FOR THREE DISTINCT PHOTOMETRIC SUBTYPES

Author

Arcavi, Iair, primary, Gal-Yam, Avishay, additional, Cenko, S. Bradley, additional, Fox, Derek B., additional, Leonard, Douglas C., additional, Moon, Dae-Sik, additional, Sand, David J., additional, Soderberg, Alicia M., additional, Kiewe, Michael, additional, Yaron, Ofer, additional, Becker, Adam B., additional, Scheps, Raphael, additional, Birenbaum, Gali, additional, Chamudot, Daniel, additional, and Zhou, Jonathan, additional

Published
2012
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75. EVIDENCE FOR TYPE Ia SUPERNOVA DIVERSITY FROM ULTRAVIOLET OBSERVATIONS WITH THEHUBBLE SPACE TELESCOPE

Author

Wang, Xiaofeng, primary, Wang, Lifan, additional, Filippenko, Alexei V., additional, Baron, Eddie, additional, Kromer, Markus, additional, Jack, Dennis, additional, Zhang, Tianmeng, additional, Aldering, Greg, additional, Antilogus, Pierre, additional, Arnett, W. David, additional, Baade, Dietrich, additional, Barris, Brian J., additional, Benetti, Stefano, additional, Bouchet, Patrice, additional, Burrows, Adam S., additional, Canal, Ramon, additional, Cappellaro, Enrico, additional, Carlberg, Raymond G., additional, di Carlo, Elisa, additional, Challis, Peter J., additional, Crotts, Arlin P. S., additional, Danziger, John I., additional, Valle, Massimo Della, additional, Fink, Michael, additional, Foley, Ryan J., additional, Fransson, Claes, additional, Gal-Yam, Avishay, additional, Garnavich, Peter M., additional, Gerardy, Chris L., additional, Goldhaber, Gerson, additional, Hamuy, Mario, additional, Hillebrandt, Wolfgang, additional, Höflich, Peter, additional, Holland, Stephen T., additional, Holz, Daniel E., additional, Hughes, John P., additional, Jeffery, David J., additional, Jha, Saurabh W., additional, Kasen, Dan, additional, Khokhlov, Alexei M., additional, Kirshner, Robert P., additional, Knop, Robert A., additional, Kozma, Cecilia, additional, Krisciunas, Kevin, additional, Lee, Brian C., additional, Leibundgut, Bruno, additional, Lentz, Eric J., additional, Leonard, Douglas C., additional, Lewin, Walter H. G., additional, Li, Weidong, additional, Livio, Mario, additional, Lundqvist, Peter, additional, Maoz, Dan, additional, Matheson, Thomas, additional, Mazzali, Paolo A., additional, Meikle, Peter, additional, Miknaitis, Gajus, additional, Milne, Peter A., additional, Mochnacki, Stefan W., additional, Nomoto, Ken'ichi, additional, Nugent, Peter E., additional, Oran, Elaine S., additional, Panagia, Nino, additional, Perlmutter, Saul, additional, Phillips, Mark M., additional, Pinto, Philip, additional, Poznanski, Dovi, additional, Pritchet, Christopher J., additional, Reinecke, Martin, additional, Riess, Adam G., additional, Ruiz-Lapuente, Pilar, additional, Scalzo, Richard A., additional, Schlegel, Eric M., additional, Schmidt, Brian P., additional, Siegrist, James, additional, Soderberg, Alicia M., additional, Sollerman, Jesper, additional, Sonneborn, George, additional, Spadafora, Anthony, additional, Spyromilio, Jason, additional, Sramek, Richard A., additional, Starrfield, Sumner G., additional, Strolger, Louis G., additional, Suntzeff, Nicholas B., additional, Thomas, Rollin C., additional, Tonry, John L., additional, Tornambe, Amedeo, additional, Truran, James W., additional, Turatto, Massimo, additional, Turner, Michael, additional, Van Dyk, Schuyler D., additional, Weiler, Kurt W., additional, Wheeler, J. Craig, additional, Wood-Vasey, Michael, additional, Woosley, Stanford E., additional, and Yamaoka, Hitoshi, additional

Published
2012
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77. ASPITZERSURVEY FOR DUST IN TYPE IIn SUPERNOVAE

Author

Fox, Ori D., primary, Chevalier, Roger A., additional, Skrutskie, Michael F., additional, Soderberg, Alicia M., additional, Filippenko, Alexei V., additional, Ganeshalingam, Mohan, additional, Silverman, Jeffrey M., additional, Smith, Nathan, additional, and Steele, Thea N., additional

Published
2011
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82. A Comprehensive Study of GRB 070125, A Most Energetic Gamma‐Ray Burst

Author

Chandra, Poonam, primary, Cenko, S. Bradley, additional, Frail, Dale A., additional, Chevalier, Roger A., additional, Macquart, Jean‐Pierre, additional, Kulkarni, Shri R., additional, Bock, Douglas C.‐J., additional, Bertoldi, Frank, additional, Kasliwal, Mansi, additional, Fox, Derek B., additional, Price, Paul A., additional, Berger, Edo, additional, Soderberg, Alicia M., additional, Harrison, Fiona A., additional, Gal‐Yam, Avishay, additional, Ofek, Eran O., additional, Rau, Arne, additional, Schmidt, Brian P., additional, Cameron, P. Brian, additional, Cowie, Lennox L., additional, Cowie, Antoinette, additional, Roth, Katherine C., additional, Dopita, Michael, additional, Peterson, Bruce, additional, and Penprase, Bryan E., additional

Published
2008
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83. GRB 070125: The First Long‐Duration Gamma‐Ray Burst in a Halo Environment

Author

Cenko, S. Bradley, primary, Fox, Derek B., additional, Penprase, Brian E., additional, Cucchiara, Antonio, additional, Price, Paul A., additional, Berger, Edo, additional, Kulkarni, Shri R., additional, Harrison, Fiona A., additional, Gal‐Yam, Avishay, additional, Ofek, Eran O., additional, Rau, Arne, additional, Chandra, Poonam, additional, Frail, Dale A., additional, Kasliwal, Mansi M., additional, Schmidt, Brian P., additional, Soderberg, Alicia M., additional, Cameron, P. Brian, additional, and Roth, Kathy C., additional

Published
2008
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85. The Automated Palomar 60 Inch Telescope

Author

Cenko, S. Bradley, primary, Fox, Derek B., additional, Moon, Dae‐Sik, additional, Harrison, Fiona A., additional, Kulkarni, S. R., additional, Henning, John R., additional, Guzman, C. Dani, additional, Bonati, Marco, additional, Smith, Roger M., additional, Thicksten, Robert P., additional, Doyle, Michael W., additional, Petrie, Hal L., additional, Gal‐Yam, Avishay, additional, Soderberg, Alicia M., additional, Anagnostou, Nathaniel L., additional, and Laity, Anastasia C., additional

Published
2006
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87. UBVRILight Curves of 44 Type Ia Supernovae

Author

Jha, Saurabh, primary, Kirshner, Robert P., additional, Challis, Peter, additional, Garnavich, Peter M., additional, Matheson, Thomas, additional, Soderberg, Alicia M., additional, Graves, Genevieve J. M., additional, Hicken, Malcolm, additional, Alves, João F., additional, Arce, Héctor G., additional, Balog, Zoltan, additional, Barmby, Pauline, additional, Barton, Elizabeth J., additional, Berlind, Perry, additional, Bragg, Ann E., additional, Briceño, César, additional, Brown, Warren R., additional, Buckley, James H., additional, Caldwell, Nelson, additional, Calkins, Michael L., additional, Carter, Barbara J., additional, Concannon, Kristi Dendy, additional, Donnelly, R. Hank, additional, Eriksen, Kristoffer A., additional, Fabricant, Daniel G., additional, Falco, Emilio E., additional, Fiore, Fabrizio, additional, Garcia, Michael R., additional, Gómez, Mercedes, additional, Grogin, Norman A., additional, Groner, Ted, additional, Groot, Paul J., additional, Haisch, Jr., Karl E., additional, Hartmann, Lee, additional, Hergenrother, Carl W., additional, Holman, Matthew J., additional, Huchra, John P., additional, Jayawardhana, Ray, additional, Jerius, Diab, additional, Kannappan, Sheila J., additional, Kim, Dong-Woo, additional, Kleyna, Jan T., additional, Kochanek, Christopher S., additional, Koranyi, Daniel M., additional, Krockenberger, Martin, additional, Lada, Charles J., additional, Luhman, Kevin L., additional, Luu, Jane X., additional, Macri, Lucas M., additional, Mader, Jeff A., additional, Mahdavi, Andisheh, additional, Marengo, Massimo, additional, Marsden, Brian G., additional, McLeod, Brian A., additional, McNamara, Brian R., additional, Megeath, S. Thomas, additional, Moraru, Dan, additional, Mossman, Amy E., additional, Muench, August A., additional, Muñoz, Jose A., additional, Muzerolle, James, additional, Naranjo, Orlando, additional, Nelson-Patel, Kristin, additional, Pahre, Michael A., additional, Patten, Brian M., additional, Peters, James, additional, Peters, Wayne, additional, Raymond, John C., additional, Rines, Kenneth, additional, Schild, Rudolph E., additional, Sobczak, Gregory J., additional, Spahr, Timothy B., additional, Stauffer, John R., additional, Stefanik, Robert P., additional, Szentgyorgyi, Andrew H., additional, Tollestrup, Eric V., additional, Väisänen, Petri, additional, Vikhlinin, Alexey, additional, Wang, Zhong, additional, Willner, S. P., additional, Wolk, Scott J., additional, Zajac, Joseph M., additional, Zhao, Ping, additional, and Stanek, Krzysztof Z., additional

Published
2006
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90. Optical Spectropolarimetry of the GRB 020813 Afterglow

Author

Barth, Aaron J., primary, Sari, Re’em, additional, Cohen, Marshall H., additional, Goodrich, Robert W., additional, Price, Paul A., additional, Fox, Derek W., additional, Bloom, J. S., additional, Soderberg, Alicia M., additional, and Kulkarni, S. R., additional

Published
2003
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92. A Broader Perspective on the GRB-SN Connection.

Author

Soderberg, Alicia M.

Subjects
*GAMMA ray bursts, *X-rays, *GAMMA rays, *TYPE I supernovae, *ASTRONOMY, *PHYSICS
Abstract

Over the last few years our understanding of local Type Ibc supernovae and their connection to long-duration gamma-ray bursts has been revolutionized. Recent discoveries have shown that the emerging picture for core-collapse explosions is one of diversity. Compiling data from our dedicated radio survey of SNe Ibc and our comprehensive HST survey of GRB-SNe together with ground-based follow-up campaigns, I review our current understanding of the GRB-SN connection. In particular, I compare local SNe Ibc with GRB-SNe based on the following criteria: (1) the distribution of optical peak magnitudes which serve as a proxy for the mass of 56Ni produced in the explosion, (2) radio luminosity at early time (few days to weeks) which provides a measure of the energy coupled to on-axis relativistic ejecta, and (3) radio luminosity at late time (several years) which constrains the emission from GRB jets initially directed away from our line-of-sight. By focusing on these three points, I will describe the complex picture of stellar death that is emerging. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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94. Optical Spectra of Type I[CLC]a[/CLC] Supernovae at [CLC][ITAL]z[/ITAL][/CLC] = 0.46 and [CLC][ITAL]z[/ITAL][/CLC] = 1.2

Author

Coil, Alison L., primary, Matheson, Thomas, additional, Filippenko, Alexei V., additional, Leonard, Douglas C., additional, Tonry, John, additional, Riess, Adam G., additional, Challis, Peter, additional, Clocchiatti, Alejandro, additional, Garnavich, Peter M., additional, Hogan, Craig J., additional, Jha, Saurabh, additional, Kirshner, Robert P., additional, Leibundgut, B., additional, Phillips, M. M., additional, Schmidt, Brian P., additional, Schommer, Robert A., additional, Smith, R. Chris, additional, Soderberg, Alicia M., additional, Spyromilio, J., additional, Stubbs, Christopher, additional, Suntzeff, Nicholas B., additional, and Woudt, Patrick, additional

Published
2000
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95. The Type Ia Supernova 1998bu in M96 and the Hubble Constant

Author

Jha, Saurabh, primary, Garnavich, Peter M., additional, Kirshner, Robert P., additional, Challis, Peter, additional, Soderberg, Alicia M., additional, Macri, Lucas M., additional, Huchra, John P., additional, Barmby, Pauline, additional, Barton, Elizabeth J., additional, Berlind, Perry, additional, Brown, Warren R., additional, Caldwell, Nelson, additional, Calkins, Michael L., additional, Kannappan, Sheila J., additional, Koranyi, Daniel M., additional, Pahre, Michael A., additional, Rines, Kenneth J., additional, Stanek, Krzysztof Z., additional, Stefanik, Robert P., additional, Szentgyorgyi, Andrew H., additional, Vaisanen, Petri, additional, Wang, Zhong, additional, Zajac, Joseph M., additional, Riess, Adam G., additional, Filippenko, Alexei V., additional, Li, Weidong, additional, Modjaz, Maryam, additional, Treffers, Richard R., additional, Hergenrother, Carl W., additional, Grebel, Eva K., additional, Seitzer, Patrick, additional, Jacoby, George H., additional, Benson, Priscilla J., additional, Rizvi, Akbar, additional, Marschall, Laurence A., additional, Goldader, Jeffrey D., additional, Beasley, Matthew, additional, Vacca, William D., additional, Leibundgut, Bruno, additional, Spyromilio, Jason, additional, Schmidt, Brian P., additional, and Wood, Peter R., additional

Published
1999
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96. CALTECH CORE-COLLAPSE PROJECT (CCCP) OBSERVATIONS OF TYPE IIn SUPERNOVAE: TYPICAL PROPERTIES AND IMPLICATIONS FOR THEIR PROGENITOR STARS.

Author

Kiewe, Michael, Gal-Yam, Avishay, Arcavi, Iair, Leonard, Douglas C., Enriquez, J. Emilio, Cenko, S. Bradley, Fox, Derek B., Moon, Dae-Sik, Sand, David J., and Soderberg, Alicia M.

Subjects
SUPERNOVAE, STAR observations, STELLAR mass, ASTRONOMICAL spectroscopy, CATACLYSMIC variable stars
Abstract

Type IIn supernovae (SNe IIn) are rare events, constituting only a few percent of all core-collapse SNe, and the current sample of well-observed SNe IIn is small. Here, we study the four SNe IIn observed by the Caltech Core- Collapse Project (CCCP). The CCCP SN sample is unbiased to the extent that object selection was not influenced by target SN properties. Therefore, these events are representative of the observed population of SNe IIn. We find that a narrow P-Cygni profile in the hydrogen Balmer lines appears to be a ubiquitous feature of SNe IIn. Our light curves show a relatively long rise time (>20 days) followed by a slow decline stage (0.01-0.15 mag day-1), and a typical V-band peak magnitude of Mv = - 18.4 ± 1.0 mag. We measure the progenitor star wind velocities (600-1400 km s-1) for the SNe in our sample and derive pre-explosion mass-loss rates (0.026-0.12 M⊙ yr-1). We compile similar data for SNe IIn from the literature and discuss our results in the context of this larger sample. Our results indicate that typical SNe IIn arise from progenitor stars that undergo luminous-blue-variable-like mass loss shortly before they explode. [ABSTRACT FROM AUTHOR]

Published
2012
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97. Towards Characterization of the Type Iip Supernova Progenitor Population: A Statistical Sample of Light Curves From Pan-Starrs1

Author

Sanders, Nathan Edward, Soderberg, Alicia M., Gezari, S., Betancourt, M., Chornock, R., Berger, Edo, Foley, R. J., Challis, P., Drout, M., Kirshner, R. P., Lunnan, R., Marion, G. H., Margutti, R., McKinnon, R., Milisavljevic, D., Narayan, G., Rest, A., Kankare, E., Mattila, S., Smartt, S. J., Huber, M. E., Burgett, W. S., Draper, P.W., Hodapp, K. W., Kaiser, N., Kudritzki, R. P., Magnier, E. A., Metcalfe, N., Morgan, J. S., Price, P. A., Tonry, J. L., Wainscoat, R. J., and Waters, C.

Subjects
Surveys:Pan-STARRS1, supernovae: general
Abstract

In recent years, wide-field sky surveys providing deep multiband imaging have presented a new path for indirectly characterizing the progenitor populations of core-collapse supernovae (SNe): systematic light curve studies. We assemble a set of 76 grizy-band Type IIP SN light curves from Pan-STARRS1, obtained over a constant survey program of 4 yr and classified using both spectroscopy and machine-learning-based photometric techniques. We develop and apply a new Bayesian model for the full multiband evolution of each light curve in the sample. We find no evidence of a subpopulation of fast-declining explosions (historically referred to as "Type IIL" SNe). However, we identify a highly significant relation between the plateau phase decay rate and peak luminosity among our SNe IIP. These results argue in favor of a single parameter, likely determined by initial stellar mass, predominantly controlling the explosions of red supergiants. This relation could also be applied for SN cosmology, offering a standardizable candle good to an intrinsic scatter of lesssim 0.2 mag. We compare each light curve to physical models from hydrodynamic simulations to estimate progenitor initial masses and other properties of the Pan-STARRS1 Type IIP SN sample. We show that correction of systematic discrepancies between modeled and observed SN IIP light-curve properties and an expanded grid of progenitor properties are needed to enable robust progenitor inferences from multiband light-curve samples of this kind. This work will serve as a pathfinder for photometric studies of core-collapse SNe to be conducted through future wide-field transient searches., Astronomy

Published
2015
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98. Zooming in on the progenitors of superluminous supernovae with the HST

Author

Lunnan, R, Chornock, R, Berger, Edo, Rest, A., Fong, W, Scolnic, D., Jones, D. O., Soderberg, Alicia M., Challis, Peter M., Drout, Maria Rebecca, Foley, R. J., Huber, M. E., Kirshner, Robert P., Leibler, C., Marion, G. H., McCrum, M., Milisavljevic, Danny, Narayan, Gautham Siddharth, Sanders, Nathan Edward, Smartt, S. J., Smith, K. W., Tonry, J. L., Burgett, W. S., Chambers, K. C., Flewelling, H., Kudritzki, R.-P., Wainscoat, R. J., and Waters, C.

Subjects
galaxies: dwarf, galaxies: star formation, supernovae: general
Abstract

We present Hubble Space Telescope (HST) rest-frame ultraviolet imaging of the host galaxies of 16 hydrogen-poor superluminous supernovae (SLSNe), including 11 events from the Pan-STARRS Medium Deep Survey. Taking advantage of the superb angular resolution of HST, we characterize the galaxies' morphological properties, sizes, and star formation rate (SFR) densities. We determine the supernova (SN) locations within the host galaxies through precise astrometric matching and measure physical and host-normalized offsets as well as the SN positions within the cumulative distribution of UV light pixel brightness. We find that the host galaxies of H-poor SLSNe are irregular, compact dwarf galaxies, with a median half-light radius of just 0.9 kpc. The UV-derived SFR densities are high ($\langle {{{\Sigma }}_{{\rm SFR}}}\rangle \simeq 0.1{{M}_{\odot }}\;{\rm y}{{{\rm r}}^{-1}}\;{\rm kp}{{{\rm c}}^{-2}}$), suggesting that SLSNe form in overdense environments. Their locations trace the UV light of their host galaxies, with a distribution intermediate between that of long-duration gamma-ray bursts (LGRBs; which are strongly clustered on the brightest regions of their hosts) and a uniform distribution (characteristic of normal core-collapse SNe), though cannot be statistically distinguished from either with the current sample size. Taken together, this strengthens the picture that SLSN progenitors require different conditions than those of ordinary core-collapse SNe to form and that they explode in broadly similar galaxies as do LGRBs. If the tendency for SLSNe to be less clustered on the brightest regions than are LGRBs is confirmed by a larger sample, this would indicate a different, potentially lower-mass progenitor for SLSNe than LRGBs., Astronomy

Published
2015
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99. Metamorphosis of Sn 2014c: Delayed Interaction Between a Hydrogen Poor Core-Collapse Supernova and a Nearby Circumstellar Shell

Author

Milisavljevic, Danny, Margutti, R, Kamble, Atish, Patnaude, Daniel James, Raymond, John Charles, Eldridge, J. J., Fong, W., Bietenholz, M., Challis, Peter M., Chornock, R, Drout, Maria Rebecca, Fransson, C., Fesen, R. A., Grindlay, Jonathan E., Kirshner, Robert P., Lunnan, R, Mackey, J., Miller, George Franklin, Parrent, Jerod T., Sanders, Nathan Edward, Soderberg, Alicia M., and Zauderer, B

Subjects
supernovae: general, supernova: individual (SN 2014C)
Abstract

We present optical observations of supernova SN 2014C, which underwent an unprecedented slow metamorphosis from H-poor type Ib to H-rich type IIn over the course of one year. The observed spectroscopic evolution is consistent with the supernova having exploded in a cavity before encountering a massive shell of the progenitor star's stripped hydrogen envelope. Possible origins for the circumstellar shell include a brief Wolf–Rayet fast wind phase that overtook a slower red supergiant wind, eruptive ejection, or confinement of circumstellar material by external influences of neighboring stars. An extended high velocity Hα absorption feature seen in near-maximum light spectra implies that the progenitor star was not completely stripped of hydrogen at the time of core collapse. Archival pre-explosion Subaru Telescope Suprime-Cam and Hubble Space Telescope Wide Field Planetary Camera 2 images of the region obtained in 2009 show a coincident source that is most likely a compact massive star cluster in NGC 7331 that hosted the progenitor system. By comparing the emission properties of the source with stellar population models that incorporate interacting binary stars we estimate the age of the host cluster to be 30–300 Myr, and favor ages closer to 30 Myr in light of relatively strong Hα emission. SN 2014C is the best observed member of a class of core-collapse supernovae that fill the gap between events that interact strongly with dense, nearby environments immediately after explosion and those that never show signs of interaction. Better understanding of the frequency and nature of this intermediate population can contribute valuable information about the poorly understood final stages of stellar evolution., Astronomy

Published
2015
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100. GALEX Detection of Shock Breakout in Type IIP Supernova PS1-13arp: Implications for the Progenitor Star Wind

Author

Gezari, S., Jones, D. O., Sanders, Nathan Edward, Soderberg, Alicia M., Hung, T., Heinis, S., Smartt, S. J., Rest, A., Scolnic, D., Chornock, R, Berger, Edo, Foley, R. J., Huber, M. E., Price, P., Stubbs, Christopher William, Riess, A. G., Kirshner, Robert P., Smith, K., Wood-Vasey, W. M., Schiminovich, D., Martin, D. C., Burgett, W. S., Chambers, K. C., Flewelling, H., Kaiser, N., Tonry, J. L., and Wainscoat, R.

Subjects
ultraviolet: general, surveys, supernovae
Abstract

We present theGALEXdetection of a UV burst at the time of explosion of an optically normal supernova (SN) IIP (PS1-13arp) from the Pan-STARRS1 survey atz= 0.1665. The temperature and luminosity of the UV burst match the theoretical predictions for shock breakout in a red supergiant (RSG), but with a duration a factor of ~50 longer than expected. We compare the NUV light curve of PS1-13arp to previousGALEXdetections of SNe IIP and find clear distinctions that indicate that the UV emission is powered by shock breakout, and not by the subsequent cooling envelope emission previously detected in these systems. We interpret the ~1 day duration of the UV signal with a shock breakout in the wind of an RSG with a pre-explosion mass-loss rate ofyr−1. This mass-loss rate is enough to prolong the duration of the shock breakout signal, but not enough to produce an excess in the optical plateau light curve or narrow emission lines powered by circumstellar interaction. This detection of non-standard, potentially episodic high mass loss in an RSG SN progenitor has favorable consequences for the prospects of future wide-field UV surveys to detect shock breakout directly in these systems, and provide a sensitive probe of the pre-explosion conditions of SN progenitors., Astronomy

Published
2015
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