Browsing by Author "Czekala, Ian"

Now showing items 1-11 of 11

    • Cosmological Constraints from Measurements of Type Ia Supernovae Discovered during the First 1.5 yr of the Pan-STARRS1 Survey 

      Rest, Armin Wolfgang; Scolnic, D.; Foley, R. J.; Huber, M. E.; Chornock, R.; Narayan, Gautham Siddharth; Tonry, J. L.; Berger, Edo; Soderberg, Alicia M.; Stubbs, Christopher William; Riess, A.; Kirshner, Robert P.; Smartt, S. J.; Schlafly, E.; Rodney, S.; Botticella, M. T.; Brout, D.; Challis, P.; Czekala, Ian Philip; Drout, Maria Rebecca; Hudson, M. J.; Kotak, R.; Leibler, C.; Lunnan, Ragnhild; Marion, G. H.; McCrum, M.; Milisavljevic, D.; Pastorello, A.; Sanders, Nathan Edward; Smith, K.; Stafford, E.; Thilker, D.; Valenti, S.; Wood-Vasey, W. M.; Zheng, Z.; Burgett, W. S.; Chambers, K. C.; Denneau, L.; Draper, P. W.; Flewelling, H.; Hodapp, K. W.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E. A.; Metcalfe, N.; Price, P. A.; Sweeney, W.; Wainscoat, R.; Waters, C. (IOP Publishing, 2014)
      We present griz P1 light curves of 146 spectroscopically confirmed Type Ia supernovae (SNe Ia; 0.03 < z < 0.65) discovered during the first 1.5 yr of the Pan-STARRS1 Medium Deep Survey. The Pan-STARRS1 natural photometric ...

    • The Fundamental Properties of Young Stars 

      Czekala, Ian (2016-05-18)
      Accurate knowledge of the fundamental properties of stars--mass, temperature, and luminosity--is key to our understanding of stellar evolution. In particular, empirical measurements of stellar mass are difficult to make ...

    • The Intermediate Luminosity Optical Transient Sn 2010da: The Progenitor, Eruption, and Aftermath of a Peculiar Supergiant High-Mass X-Ray Binary 

      Villar, Victoria Ashley; Berger, Edo; Chornock, R.; Margutti, R.; Laskar, T.; Brown, P. J.; Blanchard, Peter Kelly; Czekala, Ian Philip; Lunnan, R.; Reynolds, M. T. (American Astronomical Society, 2016)
      We present optical spectroscopy, ultraviolet-to-infrared imaging, and X-ray observations of the intermediate luminosity optical transient (ILOT) SN 2010da in NGC 300 (d = 1.86 Mpc) spanning from −6 to +6 years relative to ...

    • A Jet Break in the X-Ray Light Curve of Short Grb 111020a: Implications for Energetics and Rates 

      Fong, W; Berger, Edo; Margutti, R; Zauderer, B; Troja, E.; Czekala, Ian Philip; Chornock, R; Gehrels, N.; Sakamoto, T.; Fox, D. B.; Podsiadlowski, P. (IOP Publishing, 2012)
      We present broad-band observations of the afterglow and environment of the short GRB 111020A. An extensive X-ray light curve from Swift/XRT, XMM-Newton and Chandra, spanning ∼ 100 seconds to 10 days after the burst, reveals ...

    • Pan-STARRS1 Discovery of Two Ultraluminous Supernovae at z ≈ 0.9 

      Chomiuk, Laura B; Chornock, Ryan T.; Soderberg, Alicia M.; Berger, Edo; Chevalier, R. A.; Foley, R. J.; Huber, M. E.; Narayan, Gautham Siddharth; Rest, A.; Gezari, S.; Kirshner, Robert P.; Riess, A.; Rodney, S. A.; Smartt, S. J.; Stubbs, Christopher William; Tonry, J. L.; Wood-Vasey, W. M.; Burgett, W. S.; Chambers, K. C.; Czekala, Ian Philip; Flewelling, H.; Forster, K.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E. A.; Martin, D. C.; Morgan, J. S.; Neill, J. D.; Price, P. A.; Roth, K. C.; Sanders, Nathan Edward; Wainscoat, R. J. (IOP Publishing, 2011)
      We present the discovery of two ultraluminous supernovae (SNe) at z ≈ 0.9 with the Pan-STARRS1 Medium Deep Survey. These SNe, PS1-10ky and PS1-10awh, are among the most luminous SNe ever discovered, comparable to the unusual ...

    • PS1-10afx at z = 1.388: Pan-STARRS1 Discovery of a New Type of Superluminous Supernova 

      Chornock, Ryan T.; Berger, Edo; Rest, A.; Milisavljevic, Danny; Lunnan, Ragnhild; Foley, R. J.; Soderberg, Alicia M.; Smartt, S. J.; Burgasser, A. J.; Challis, Peter M.; Chomiuk, L.; Czekala, Ian Philip; Drout, Maria Rebecca; Fong, Wen-fai; Huber, M. E.; Kirshner, Robert P.; Leibler, C.; McLeod, Brian A.; Marion, G. H.; Narayan, Gautham Siddharth; Riess, A. G.; Roth, K. C.; Sanders, Nathan Edward; Scolnic, D.; Smith, K.; Stubbs, Christopher William; Tonry, J. L.; Valenti, S.; Burgett, W. S.; Chambers, K. C.; Hodapp, K. W.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E. A.; Price, P. A. (American Astronomical Society, 2013)
      We present the Pan-STARRS1 discovery of PS1-10afx, a unique hydrogen-deficient superluminous supernova (SLSN) at redshift z = 1.388. The light curve peaked at z P1 = 21.7 mag, making PS1-10afx comparable to the most luminous ...

    • A Spectroscopic Study of Type Ibc Supernova Host Galaxies From Untargeted Surveys 

      Sanders, Nathan Edward; Soderberg, Alicia M.; Levesque, E. M.; Foley, R. J.; Chornock, R; Milisavljevic, Danny; Margutti, R; Berger, Edo; Drout, Maria Rebecca; Czekala, Ian Philip; Dittmann, Jason Adam (IOP Publishing, 2012)
      We present the first spectroscopic study of the host environments of Type Ibc supernovae (SN Ibc) discovered exclusively by untargeted SN searches. Past studies of SN Ibc host environments have been biased towards high-mass, ...

    • The superluminous supernova PS1-11ap: bridging the gap between low and high redshift 

      McCrum, M.; Smartt, S. J.; Kotak, R.; Rest, A.; Jerkstrand, A.; Inserra, C.; Rodney, S. A.; Chen, T.- W.; Howell, D. A.; Huber, M. E.; Pastorello, A.; Tonry, J. L.; Bresolin, F.; Kudritzki, R.- P.; Chornock, R.; Berger, Edo; Smith, K.; Botticella, M. T.; Foley, R. J.; Fraser, M.; Milisavljevic, Danny; Nicholl, M.; Riess, A. G.; Stubbs, Christopher William; Valenti, S.; Wood-Vasey, W. M.; Wright, D.; Young, D. R.; Drout, Maria Rebecca; Czekala, Ian Philip; Burgett, W. S.; Chambers, K. C.; Draper, P.; Flewelling, H.; Hodapp, K. W.; Kaiser, N.; Magnier, E. A.; Metcalfe, N.; Price, P. A.; Sweeney, W.; Wainscoat, R. J. (Oxford University Press (OUP), 2013)
      We present optical photometric and spectroscopic coverage of the superluminous supernova (SLSN) PS1-11ap, discovered with the Pan-STARRS1 Medium Deep Survey at z = 0.524. This intrinsically blue transient rose slowly to ...

    • Ultra-Luminous Supernovae as a New Probe of the Interstellar Medium in Distant Galaxies 

      Berger, Edo; Chornock, R; Lunnan, R.; Foley, R.; Czekala, Ian Philip; Rest, A.; Leibler, C.; Soderberg, Alicia M.; Roth, K.; Narayan, G.; Huber, M. E.; Milisavljevic, Danny; Sanders, Nathan Edward; Drout, M.; Margutti, R.; Kirshner, Robert P.; Marion, G. H.; Challis, P. J.; Riess, A. G.; Smartt, S. J.; Burgett, W. S.; Hodapp, K. W.; Heasley, J. N.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E. A.; McCrum, M.; Price, P. A.; Smith, K.; Tonry, J. L.; Wainscoat, R. J. (IOP Publishing, 2012)
      We present the Pan-STARRS1 discovery and light curves, and follow-up MMT and Gemini spectroscopy of an ultra-luminous supernova (ULSN; dubbed PS1-11bam) at a redshift of z = 1.566 with a peak brightness of MUV ≈ −22.3 mag. ...

    • The Ultraviolet-Bright, Slowly Declining Transient PS1-11af as a Partial Tidal Disruption Event. 

      Chornock, R.; Berger, Edo; Gezari, S.; Zauderer, Bevin Ashley; Rest, A.; Chomiuk, L.; Kamble, Atish; Soderberg, Alicia M.; Czekala, Ian Philip; Dittmann, Jason Adam; Drout, Maria Rebecca; Foley, R. J.; Fong, W; Huber, M. E.; Kirshner, Robert P.; Lawrence, A.; Lunnan, Ragnhild; Marion, G. H.; Narayan, Gautham Siddharth; Riess, A. G.; Roth, K. C.; Sanders, Nathan Edward; Scolnic, D.; Smartt, S. J.; Smith, K.; Stubbs, Christopher William; Tonry, J. L.; Burgett, W. S.; Chambers, K. C.; Flewelling, H.; Hodapp, K. W.; Kaiser, N.; Magnier, E. A.; Martin, D. C.; Neill, J. D.; Price, P. A.; Wainscoat, R. (IOP Publishing, 2013)
      We present the Pan-STARRS1 discovery of the long-lived and blue transient PS1-11af, which was also detected by Galaxy Evolution Explorer with coordinated observations in the near-ultraviolet (NUV) band. PS1-11af is associated ...

    • The Unusually Luminous Extragalactic Nova Sn 2010u 

      Czekala, Ian Philip; Berger, Edo; Chornock, R; Pastorello, A.; Marion, G. H.; Margutti, R.; Botticella, M. T.; Challis, P.; Ergon, M.; Smartt, S.; Sollerman, J.; Vinkó, J.; Wheeler, J. C. (IOP Publishing, 2013)
      We present observations of the unusual optical transient SN 2010U, including spectra taken 1.03 days to 15.3 days after maximum light that identify it as a fast and luminous Fe II type nova. Our multi-band light curve ...