Results 31 to 40 of about 2,618 (181)

On the nature of rapidly fading Type II supernovae [PDF]

, 2016
It has been suggested that Type II supernovae with rapidly fading light curves (a.k.a. Type IIL supernovae) are explosions of progenitors with low-mass hydrogen-rich envelopes which are of the order of 1M(circle dot.) We investigate light-curve ...
Moriya, Takashi J., Blinnikov, Sergei I., Pruzhinskaya, Maria V., Ergon, Mattias,   +3 more
core   +1 more source

The pursuit of the Hubble Constant using Type II Supernovae [PDF]

, 2023
International audienceThe use of multiple independent methods with their own systematic uncertainties is crucial for resolving the ongoing tension between local and distant measurements of the Hubble constant ($H_{0}$).
Galbany, L, de Jaeger, T
core   +3 more sources

Circumstellar Medium Interaction in SN 2018lab, A Low-luminosity Type IIP Supernova Observed with TESS

The Astrophysical Journal, 2023
We present photometric and spectroscopic data of SN 2018lab, a low-luminosity Type IIP supernova (LLSN) with a V -band peak luminosity of −15.1 ± 0.1 mag.
Jeniveve Pearson, Griffin Hosseinzadeh, David J. Sand, Jennifer E. Andrews, Jacob E. Jencson, Yize Dong, K. Azalee Bostroem, S. Valenti, Daryl Janzen, Nicolás Meza Retamal, M. J. Lundquist, Samuel Wyatt, R. C. Amaro, Jamison Burke, D. Andrew Howell, Curtis McCully, Daichi Hiramatsu, Saurabh W. Jha, Nathan Smith, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart, Yi Yang, Jeonghee Rho   +23 more
doaj   +1 more source

Dust formation and evolution in the ejecta of core-collapse supernovae [PDF]

, 2015
Observations of local supernovae over the past couple of decades have reported the presence of dust in the ejecta. The dust masses inferred from observations in mid-infrared and submillimeter wavelengths differ by a factor of 10^2 to 10^4 The composition
Sarangi, Arkaprabha
core   +1 more source

Expanding Photospheres of Type II Supernovae and the Extragalactic Distance Scale [PDF]

, 2021
We use the Expanding Photosphere Method to determine distances to 10 Type II supernovae. The effects of asymmetries extinction, and flux dilution are explored. Using empirical evidence and time-dependent, spherical models which treat H and He in non-LTE,
Schmidt, Brian, Kirshner, Robert P, Eastman, R   +2 more
core   +1 more source

JWST Imaging of the Cartwheel Galaxy Reveals Dust Associated with SN 2021afdx

The Astrophysical Journal Letters, 2023
We present near- and mid-infrared (0.9–18 μ m) photometry of supernova (SN) 2021afdx, which was imaged serendipitously with the James Webb Space Telescope (JWST) as part of its Early Release Observations of the Cartwheel Galaxy.
Griffin Hosseinzadeh, David J. Sand, Jacob E. Jencson, Jennifer E. Andrews, Irene Shivaei, K. Azalee Bostroem, Stefano Valenti, Tamás Szalai, Jamison Burke, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran   +14 more
doaj   +1 more source

Type II Supernova Photospheres and the Distance to Supernova 1987A [PDF]

International Astronomical Union Colloquium, 1988
Among the many historic opportunities provided by the recent supernova in the LMC is that to improve our understanding of the physical conditions in the neighborhood of supernova photospheres, even though 1987A was initially characterized by radial and time scales smaller (by a factor 5–10) than “standard” more luminous SNII.
Manorama Chilukuri, Robert V. Wagoner
openaire   +1 more source

Carbon Monoxide in type II supernovae [PDF]

, 2001
Infrared spectra of two type II supernovae 6 months after explosion are presented. The spectra exhibit a strong similarity to the observations of SN 1987A and other type II SNe at comparable epochs.
R. Gilmozzi, B. Leibundgut, J. Spyromilio   +2 more
core   +1 more source

Toward a cosmological Hubble diagram for Type II-P supernovae [PDF]

, 2006
We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based on five events at redshift up to z~0.3. This diagram was constructed using photometry from the Canada-France-Hawaii Telescope Supernova Legacy Survey and ...
Astier, Pierre, Fouchez, Dominique, Conley, A, Conley, Alex, Neill, James D., Astier, P., Sullivan, M., Fouchez, D., Carlberg, RG, Ellis, R, Fabbro, S., Pritchet, CJ, Pritchet, Chris J, Ellis, Richard, Pritchet, Chris J., Nugent, P., Perrett, Kathy, Carlberg, Raymond G, Conley, A., Leonard, DC, Regnault, N., Gal-Yam, Avishay, Carlberg, Raymond G., Pritchet, C. J., Howell, D. Andrew, Pain, Reynald, Howell, DA, Fabbro, Sebastien, Nugent, Peter, Perrett, K., Regnault, Nicolas, Leonard, D. C., Gal-Yam, A, Neill, JD, Sullivan, M, Perrett, K, Fabbro, S, Ellis, R., Pain, R, Howell, D Andrew, Astier, P, Sullivan, Mark, Leonard, Douglas C., Neill, James D, Regnault, N, Neill, J. D., Pain, R., Gal-Yam, A., Nugent, P, Fouchez, D, Carlberg, R. G., Howell, D. A., Carlberg, RaymondG., Leonard, Douglas C   +53 more
core   +1 more source

An updated Type II supernova Hubble diagram [PDF]

Astronomy & Astrophysics, 2018
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 ≲z≲ 0.335 range, with a view to re-examining their utility as distance indicators. Specifically, we apply the expanding photosphere method (EPM) and the standardized candle method (SCM) to each target, and find that both methods yield distances that ...
Gall, E. E. E., Kotak, R., Leibundgut, B., Taubenberger, S., Hillebrandt, W., Kromer, M., Burgett, W. S., Chambers, K., Flewelling, H., Huber, M. E., Kaiser, N., Kudritzki, R. P., Magnier, E. A., Metcalfe, N., Smith, K., Tonry, J. L., Wainscoat, R. J., Waters, C.   +17 more
openaire   +5 more sources