Zobrazeno 1 - 10
of 358
pro vyhledávání: '"Lluís Galbany"'
Autor:
Nicolás Meza-Retamal, Yize Dong, K. Azalee Bostroem, Stefano Valenti, Lluís Galbany, Jeniveve Pearson, Griffin Hosseinzadeh, Jennifer E. Andrews, David J. Sand, Jacob E. Jencson, Daryl Janzen, Michael J. Lundquist, Emily T. Hoang, Samuel Wyatt, Peter J. Brown, D. Andrew Howell, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Vladimir Kouprianov, Daichi Hiramatsu, Saurabh W. Jha, Nathan Smith, Joshua Haislip, Daniel E. Reichart, Manisha Shrestha, F. Fabián Rosales-Ortega, Thomas G. Brink, Alexei V. Filippenko, WeiKang Zheng, Yi Yang
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 141 (2024)
We present comprehensive optical observations of SN 2021gmj, a Type II supernova (SN II) discovered within a day of explosion by the Distance Less Than 40 Mpc survey. Follow-up observations show that SN 2021gmj is a low-luminosity SN II (LL SN II), w
Externí odkaz:
https://doaj.org/article/48594d188ca94f9bb5ef9f55d63cf74e
Autor:
Syed A. Uddin, Christopher R. Burns, M M. Phillips, Nicholas B. Suntzeff, Wendy L. Freedman, Peter J. Brown, Nidia Morrell, Mario Hamuy, Kevin Krisciunas, Lifan Wang, Eric Y. Hsiao, Ariel Goobar, Saul Perlmutter, Jing Lu, Maximilian Stritzinger, Joseph P. Anderson, Chris Ashall, Peter Hoeflich, Benjamin J. Shappee, S. E. Persson, Anthony L. Piro, E Baron, Carlos Contreras, Lluís Galbany, Sahana Kumar, Melissa Shahbandeh, Scott Davis, Jorge Anais, Luis Busta, Abdo Campillay, Sergio Castellón, Carlos Corco, Tiara Diamond, Christa Gall, Consuelo Gonzalez, Simon Holmbo, Miguel Roth, Jacqueline Serón, Francesco Taddia, Simón Torres, Charles Baltay, Gastón Folatelli, Ellie Hadjiyska, Mansi Kasliwal, Peter E. Nugent, David Rabinowitz, Stuart D. Ryder
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 72 (2024)
We present an analysis of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project I and II and extend the Hubble diagram from optical to near-infrared wavelengths ( uBgVriYJH ). We calculate the Hubble constant, H _0 , using various distance
Externí odkaz:
https://doaj.org/article/28e475ec0cc9466b88a955ded83817d5
Autor:
Sara Faris, Iair Arcavi, Lydia Makrygianni, Daichi Hiramatsu, Giacomo Terreran, Joseph Farah, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, K. Azalee Bostroem, Wiam Abojanb, Marco C. Lam, Lina Tomasella, Thomas G. Brink, Alexei V. Filippenko, K. Decker French, Peter Clark, Or Graur, Giorgos Leloudas, Mariusz Gromadzki, Joseph P. Anderson, Matt Nicholl, Claudia P. Gutiérrez, Erkki Kankare, Cosimo Inserra, Lluís Galbany, Thomas Reynolds, Seppo Mattila, Teppo Heikkilä, Yanan Wang, Francesca Onori, Thomas Wevers, Eric R. Coughlin, Panos Charalampopoulos, Joel Johansson
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 104 (2024)
AT 2019azh is a H+He tidal disruption event (TDE) with one of the most extensive ultraviolet and optical data sets available to date. We present our photometric and spectroscopic observations of this event starting several weeks before and out to app
Externí odkaz:
https://doaj.org/article/e62f0d324a694454a17844ab706db930
Extrapolation of Type Ia Supernova Spectra into the Near-infrared Using Principal Component Analysis
Autor:
Anthony Burrow, E. Baron, Christopher R. Burns, Eric Y. Hsiao, Jing Lu, Chris Ashall, Peter J. Brown, James M. DerKacy, G. Folatelli, Lluís Galbany, P. Hoeflich, Kevin Krisciunas, N. Morrell, M. M. Phillips, Benjamin J. Shappee, Maximilian D. Stritzinger, Nicholas B. Suntzeff
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 55 (2024)
We present a method of extrapolating the spectroscopic behavior of Type Ia supernovae (SNe Ia) in the near-infrared (NIR) wavelength regime up to 2.30 μ m using optical spectroscopy. Such a process is useful for accurately estimating K-corrections a
Externí odkaz:
https://doaj.org/article/888908ee85ce4db3a942fab80d781ff7
Autor:
Lindsey A. Kwok, Matthew R. Siebert, Joel Johansson, Saurabh W. Jha, Stéphane Blondin, Luc Dessart, Ryan J. Foley, D. John Hillier, Conor Larison, Rüdiger Pakmor, Tea Temim, Jennifer E. Andrews, Katie Auchettl, Carles Badenes, Barna Barnabas, K. Azalee Bostroem, Max J. Brenner Newman, Thomas G. Brink, María José Bustamante-Rosell, Yssavo Camacho-Neves, Alejandro Clocchiatti, David A. Coulter, Kyle W. Davis, Maxime Deckers, Georgios Dimitriadis, Yize Dong, Joseph Farah, Alexei V. Filippenko, Andreas Flörs, Ori D. Fox, Peter Garnavich, Estefania Padilla Gonzalez, Or Graur, Franz-Josef Hambsch, Griffin Hosseinzadeh, D. Andrew Howell, John P. Hughes, Wolfgang E. Kerzendorf, Xavier K. Saux, Keiichi Maeda, Kate Maguire, Curtis McCully, Cassidy Mihalenko, Megan Newsome, John T. O’Brien, Jeniveve Pearson, Craig Pellegrino, Justin D. R. Pierel, Abigail Polin, Armin Rest, César Rojas-Bravo, David J. Sand, Michaela Schwab, Melissa Shahbandeh, Manisha Shrestha, Nathan Smith, Louis-Gregory Strolger, Tamás Szalai, Kirsty Taggart, Giacomo Terreran, Jacco H. Terwel, Samaporn Tinyanont, Stefano Valenti, József Vinkó, J. Craig Wheeler, Yi Yang, WeiKang Zheng, Chris Ashall, James M. DerKacy, Lluís Galbany, Peter Hoeflich, Thomas de Jaeger, Jing Lu, Justyn Maund, Kyle Medler, Nidia Morell, Benjamin J. Shappee, Maximilian Stritzinger, Nicholas Suntzeff, Michael Tucker, Lifan Wang
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 135 (2024)
We present an analysis of ground-based and JWST observations of SN 2022pul, a peculiar “03fg-like” (or “super-Chandrasekhar”) Type Ia supernova (SN Ia), in the nebular phase at 338 days postexplosion. Our combined spectrum continuously covers
Externí odkaz:
https://doaj.org/article/497a3681f5304dde951f637691196378
Autor:
Héctor Martínez-Rodríguez, Lluís Galbany, Carles Badenes, Joseph P. Anderson, Inmaculada Domínguez, Hanindyo Kuncarayakti, Joseph D. Lyman, Sebastián F. Sánchez, José M. Vílchez, Nathan Smith, Dan Milisavljevic
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 125 (2024)
We present results from a systematic search for broad (≥ 400 km s ^−1 ) H α emission in integral field spectroscopy data cubes of ∼1200 nearby galaxies obtained with PMAS and MUSE. We found 19 unique regions that pass our quality cuts, four of
Externí odkaz:
https://doaj.org/article/ea76824bb9ce4bcd9c5c9c5862949d81
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:
Thallis Pessi, Joseph P. Anderson, Joseph D. Lyman, Jose L. Prieto, Lluís Galbany, Christopher S. Kochanek, Sebastian F. Sánchez, Hanindyo Kuncarayakti
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 2, p L29 (2023)
Core-collapse supernovae (CCSNe) are widely accepted to be caused by the explosive death of massive stars with initial masses ≳8 M _⊙ . There is, however, a comparatively poor understanding of how properties of the progenitors—mass, metallicity
Externí odkaz:
https://doaj.org/article/e053defa69af4de08374a75f027f9414
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:
Ignacio Reyes-Jainaga, Francisco Förster, Alejandra M. Muñoz Arancibia, Guillermo Cabrera-Vives, Amelia Bayo, Franz E. Bauer, Javier Arredondo, Esteban Reyes, Giuliano Pignata, A. M. Mourão, Javier Silva-Farfán, Lluís Galbany, Alex Álvarez, Nicolás Astorga, Pablo Castellanos, Pedro Gallardo, Alberto Moya, Diego Rodríguez
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L43 (2023)
In recent years, automatic classifiers of image cutouts (also called “stamps”) have been shown to be key for fast supernova discovery. The Vera C. Rubin Observatory will distribute about ten million alerts with their respective stamps each night,
Externí odkaz:
https://doaj.org/article/2b1e90ff339e474a827dc965636230db