Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Nicolas E. Meza Retamal"'
Autor:
K. Azalee Bostroem, Jeniveve Pearson, Manisha Shrestha, David J. Sand, Stefano Valenti, Saurabh W. Jha, Jennifer E. Andrews, Nathan Smith, Giacomo Terreran, Elizabeth Green, Yize Dong, Michael Lundquist, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Vladimir Kouprianov, Emmy Paraskeva, Nicolas E. Meza Retamal, Daniel E. Reichart, Iair Arcavi, Alceste Z. Bonanos, Michael W. Coughlin, Ross Dobson, Joseph Farah, Lluís Galbany, Claudia Gutiérrez, Suzanne Hawley, Leslie Hebb, Daichi Hiramatsu, D. Andrew Howell, Takashi Iijima, Ilya Ilyin, Kiran Jhass, Curtis McCully, Sean Moran, Brett M. Morris, Alessandra C. Mura, Tomás E. Müller-Bravo, James Munday, Megan Newsome, Maria Th. Pabst, Paolo Ochner, Estefania Padilla Gonzalez, Andrea Pastorello, Craig Pellegrino, Lara Piscarreta, Aravind P. Ravi, Andrea Reguitti, Laura Salo, József Vinkó, Kellie de Vos, J. C. Wheeler, G. Grant Williams, Samuel Wyatt
Publikováno v:
The Astrophysical Journal Letters, Vol 956, Iss 1, p L5 (2023)
We present the optical spectroscopic evolution of SN 2023ixf seen in subnight cadence spectra from 1.18 to 15 days after explosion. We identify high-ionization emission features, signatures of interaction with material surrounding the progenitor star
Externí odkaz:
https://doaj.org/article/4770225259c04e39bbbf9c2988c9bbb1
Autor:
K. Azalee Bostroem, Luc Dessart, D. John Hillier, Michael Lundquist, Jennifer E. Andrews, David J. Sand, Yize Dong, Stefano Valenti, Joshua Haislip, Emily T. Hoang, Griffin Hosseinzadeh, Daryl Janzen, Jacob E. Jencson, Saurabh W. Jha, Vladimir Kouprianov, Jeniveve Pearson, Nicolas E. Meza Retamal, Daniel E. Reichart, Manisha Shrestha, Christopher Ashall, E. Baron, Peter J. Brown, James M. DerKacy, Joseph Farah, Lluís Galbany, J. I. González Hernández, Elizabeth Green, Peter Hoeflich, D. Andrew Howell, Lindsey A. Kwok, Curtis McCully, Tomás E. Müller-Bravo, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Jeonghee Rho, Micalyn Rowe, Michaela Schwab, Melissa Shahbandeh, Nathan Smith, Jay Strader, Giacomo Terreran, Schuyler D. Van Dyk, Samuel Wyatt
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 2, p L18 (2023)
We present five far- and near-ultraviolet spectra of the Type II plateau supernova, SN 2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble Space Telescope/Space Telescope Imaging Spectrograph. The first three epo
Externí odkaz:
https://doaj.org/article/cfb113867e64459eae9343a69eb4d3f2
Autor:
Griffin Hosseinzadeh, Joseph Farah, Manisha Shrestha, David J. Sand, Yize Dong, Peter J. Brown, K. Azalee Bostroem, Stefano Valenti, Saurabh W. Jha, Jennifer E. Andrews, Iair Arcavi, Joshua Haislip, Daichi Hiramatsu, Emily Hoang, D. Andrew Howell, Daryl Janzen, Jacob E. Jencson, Vladimir Kouprianov, Michael Lundquist, Curtis McCully, Nicolas E. Meza Retamal, Maryam Modjaz, Megan Newsome, Estefania Padilla Gonzalez, Jeniveve Pearson, Craig Pellegrino, Aravind P. Ravi, Daniel E. Reichart, Nathan Smith, Giacomo Terreran, József Vinkó
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 1, p L16 (2023)
We present the densely sampled early light curve of the Type II supernova (SN) 2023ixf, first observed within hours of explosion in the nearby Pinwheel Galaxy (Messier 101; 6.7 Mpc). Comparing these data to recently updated models of shock-cooling em
Externí odkaz:
https://doaj.org/article/c491f58589ee486da2c5864eb6bb7403
Autor:
Griffin Hosseinzadeh, David J. Sand, Sumit K. Sarbadhicary, Stuart D. Ryder, Saurabh W. Jha, Yize Dong, K. Azalee Bostroem, Jennifer E. Andrews, Emily Hoang, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Manisha Shrestha, Stefano Valenti, Samuel Wyatt, Joseph Farah, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Muzoun Alzaabi, Elizabeth M. Green, Jessica L. Gurney, Peter A. Milne, Kaycee I. Ridenhour, Nathan Smith, Paulina Soto Robles, Lindsey A. Kwok, Michaela Schwab, Mariusz Gromadzki, David A. H. Buckley, Koichi Itagaki, Daichi Hiramatsu, Laura Chomiuk, Peter Lundqvist, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 1, p L15 (2023)
We present very early photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2023bee, starting about 8 hr after the explosion, which reveal a strong excess in the optical and nearest UV ( U and UVW1 ) bands during the first sever
Externí odkaz:
https://doaj.org/article/ef9eecffc1684508b1e6db397a766bd8
Autor:
Jacob E. Jencson, Jeniveve Pearson, Emma R. Beasor, Ryan M. Lau, Jennifer E. Andrews, K. Azalee Bostroem, Yize Dong, Michael Engesser, Sebastian Gomez, Muryel Guolo, Emily Hoang, Griffin Hosseinzadeh, Saurabh W. Jha, Viraj Karambelkar, Mansi M. Kasliwal, Michael Lundquist, Nicolas E. Meza Retamal, Armin Rest, David J. Sand, Melissa Shahbandeh, Manisha Shrestha, Nathan Smith, Jay Strader, Stefano Valenti, Qinan Wang, Yossef Zenati
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L30 (2023)
We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star. The star displays compelling evidence of variability with a possible period of ≈
Externí odkaz:
https://doaj.org/article/b62ee01868714c55b069dcc5bee76209
Autor:
Yize Dong, David J. Sand, Stefano Valenti, K. Azalee Bostroem, Jennifer E. Andrews, Griffin Hosseinzadeh, Emily Hoang, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Manisha Shrestha, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 1, p 28 (2023)
We perform a comprehensive search for optical precursor emission at the position of SN 2023ixf using data from the DLT40, ZTF, and ATLAS surveys. By comparing the current data set with precursor outburst hydrodynamical model light curves, we find tha
Externí odkaz:
https://doaj.org/article/957ceda2ff364637b1f7d89bd023e0e8
Autor:
Griffin Hosseinzadeh, David J. Sand, Peter Lundqvist, Jennifer E. Andrews, K. Azalee Bostroem, Yize Dong, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Stefano Valenti, Samuel Wyatt, Jamison Burke, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Lindsey A. Kwok, Saurabh W. Jha, Jay Strader, Esha Kundu, Stuart D. Ryder, Joshua Haislip, Vladimir Kouprianov, Daniel E. Reichart
Publikováno v:
The Astrophysical Journal Letters. 933:L45
We present high-cadence optical and ultraviolet light curves of the normal Type Ia supernova (SN) 2021aefx, which shows an early bump during the first two days of observation. This bump may be a signature of interaction between the exploding white dw
Autor:
Griffin Hosseinzadeh, Charles D. Kilpatrick, Yize Dong, David J. Sand, Jennifer E. Andrews, K. Azalee Bostroem, Daryl Janzen, Jacob E. Jencson, Michael Lundquist, Nicolas E. Meza Retamal, Jeniveve Pearson, Stefano Valenti, Samuel Wyatt, Jamison Burke, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Katie Auchettl, Kyle W. Davis, Ryan J. Foley, Hao-Yu Miao, Yen-Chen Pan, Armin Rest, Matthew R. Siebert, Kirsty Taggart, Brad E. Tucker, Feng Lin Cyrus Leung, Jonathan J. Swift, Grace Yang, Joseph P. Anderson, Chris Ashall, Stefano Benetti, Peter J. Brown, Régis Cartier, Ting-Wan Chen, Massimo Della Valle, Lluís Galbany, Sebastian Gomez, Mariusz Gromadzki, Joshua Haislip, Eric Y. Hsiao, Cosimo Inserra, Saurabh W. Jha, Thomas L. Killestein, Vladimir Kouprianov, Alexandra Kozyreva, Tomás E. Müller-Bravo, Matt Nicholl, Emmy Paraskeva, Daniel E. Reichart, Stuart Ryder, Melissa Shahbandeh, Ben Shappee, Nathan Smith, David R. Young
Publikováno v:
Hosseinzadeh, G, Kilpatrick, C D, Dong, Y, Sand, D J, Andrews, J E, Bostroem, K A, Janzen, D, Jencson, J E, Lundquist, M, Meza Retamal, N E, Pearson, J, Valenti, S, Wyatt, S, Burke, J, Hiramatsu, D, Howell, D A, McCully, C, Newsome, M, Gonzalez, E P, Pellegrino, C, Terreran, G, Auchettl, K, Davis, K W, Foley, R J, Miao, H-Y, Pan, Y-C, Rest, A, Siebert, M R, Taggart, K, Tucker, B E, Cyrus Leung, F L, Swift, J J, Yang, G, Anderson, J P, Ashall, C, Benetti, S, Brown, P J, Cartier, R, Chen, T-W, Valle, M D, Galbany, L, Gomez, S, Gromadzki, M, Haislip, J, Hsiao, E Y, Inserra, C, Jha, S W, Killestein, T L, Kouprianov, V, Kozyreva, A, Müller-Bravo, T E, Nicholl, M, Paraskeva, E, Reichart, D E, Ryder, S, Shahbandeh, M, Shappee, B, Smith, N & Young, D R 2022, ' Weak mass loss from the red supergiant progenitor of the Type II SN 2021yja ', The Astrophysical Journal, vol. 935, no. 1, 31 . https://doi.org/10.3847/1538-4357/ac75f0
We present high-cadence optical, ultraviolet (UV), and near-infrared data of the nearby ($D\approx23$ Mpc) Type II supernova (SN) 2021yja. Many Type II SNe show signs of interaction with circumstellar material (CSM) during the first few days after ex