Zobrazeno 1 - 10
of 374
pro vyhledávání: '"Enrico Ramirez-Ruiz"'
Autor:
Sierra A. Dodd, Arya Nukala, Isabelle Connor, Katie Auchettl, K. D. French, Jamie A. P. Law-Smith, Erica Hammerstein, Enrico Ramirez-Ruiz
Publikováno v:
The Astrophysical Journal Letters, Vol 959, Iss 2, p L19 (2023)
We study the properties of galaxies hosting mid-infrared outbursts in the context of a catalog of 500,000 galaxies from the Sloan Digital Sky Survey. We find that nuclear obscuration, as inferred by the surrounding dust mass, does not correlate with
Externí odkaz:
https://doaj.org/article/9824461549bc434cbc10fc6e40e9e364
Autor:
Jon M. Miller, Brenna Mockler, Enrico Ramirez-Ruiz, Paul A. Draghis, Jeremy J. Drake, John Raymond, Mark T. Reynolds, Xin Xiang, Sol Bin Yun, Abderahmen Zoghbi
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 2, p L23 (2023)
The proximity and duration of the tidal disruption event ASASSN-14li led to the discovery of narrow, blueshifted absorption lines in X-rays and UV. The gas seen in X-ray absorption is consistent with bound material close to the apocenter of elliptica
Externí odkaz:
https://doaj.org/article/46ee6f7252734ff498f96835b0f6c982
Autor:
Ore Gottlieb, Jonatan Jacquemin-Ide, Beverly Lowell, Alexander Tchekhovskoy, Enrico Ramirez-Ruiz
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L32 (2023)
Collapsing stars constitute the main black hole (BH) formation channel, and are occasionally associated with the launch of relativistic jets that power γ -ray bursts (GRBs). Thus, collapsars offer an opportunity to infer the natal (before spin-up/do
Externí odkaz:
https://doaj.org/article/62210878915b424c845cba79b39ae6ab
Autor:
Charles D. Kilpatrick, Ryan J. Foley, Wynn V. Jacobson-Galán, Anthony L. Piro, Stephen J. Smartt, Maria R. Drout, Alexander Gagliano, Christa Gall, Jens Hjorth, David O. Jones, Kaisey S. Mandel, Raffaella Margutti, Enrico Ramirez-Ruiz, Conor L. Ransome, V. Ashley Villar, David A. Coulter, Hua Gao, David Jacob Matthews, Kirsty Taggart, Yossef Zenati
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 1, p L23 (2023)
We present preexplosion optical and infrared (IR) imaging at the site of the type II supernova (SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-based image of SN 2023ixf to archival Hubble Space Telescope (HST), Spitz
Externí odkaz:
https://doaj.org/article/d9821e58b9874e248959c9b36412f64b
Autor:
Ore Gottlieb, Hiroki Nagakura, Alexander Tchekhovskoy, Priyamvada Natarajan, Enrico Ramirez-Ruiz, Sharan Banagiri, Jonatan Jacquemin-Ide, Nick Kaaz, Vicky Kalogera
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 2, p L30 (2023)
Upcoming LIGO–Virgo–KAGRA (LVK) observing runs are expected to detect a variety of inspiralling gravitational-wave (GW) events that come from black hole and neutron star binary mergers. Detection of noninspiral GW sources is also anticipated. We
Externí odkaz:
https://doaj.org/article/64685045a6434f6a9094a4f3188784cf
Publikováno v:
The Astrophysical Journal Letters, Vol 946, Iss 1, p L2 (2023)
The Milky Way is believed to host hundreds of millions of quiescent stellar-mass black holes (BHs). In the last decade, some of these objects have been potentially uncovered via gravitational microlensing events. All these detections resulted in a de
Externí odkaz:
https://doaj.org/article/196a3537d20147a28fbf627dc08e4b5e
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 39 (2023)
Tidal disruption events (TDEs) take place when a star ventures too close to a supermassive black hole (SMBH) and becomes ruptured. One of the leading proposed physical mechanisms often invoked in the literature involves weak two-body interactions exp
Externí odkaz:
https://doaj.org/article/150778b23ac4415fa66af90e722fbd74
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 18 (2023)
Dynamical perturbations from supermassive black hole (SMBH) binaries can increase the rates of tidal disruption events (TDEs). However, most previous work focuses on TDEs from the heavier black hole in the SMBH binary (SMBHB) system. In this work, we
Externí odkaz:
https://doaj.org/article/2aab51e75b9b4d4c8e188aed57961fb8
Autor:
Ricardo Yarza, Naela B. Razo-López, Ariadna Murguia-Berthier, Rosa Wallace Everson, Andrea Antoni, Morgan MacLeod, Melinda Soares-Furtado, Dongwook Lee, Enrico Ramirez-Ruiz
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 176 (2023)
The engulfment of substellar bodies (SBs), such as brown dwarfs and planets, by giant stars is a possible explanation for rapidly rotating giants, lithium-rich giants, and the presence of SBs in close orbits around subdwarfs and white dwarfs. We perf
Externí odkaz:
https://doaj.org/article/396f601ecdad4757b4fcd19068e72ac5
Autor:
Anne Noer Kolborg, Enrico Ramirez-Ruiz, Davide Martizzi, Phillip Macias, Melinda Soares-Furtado
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 100 (2023)
Metal-poor stars in the Milky Way (MW) halo display large star-to-star dispersion in their r -process abundance relative to lighter elements. This suggests a chemically diverse and unmixed interstellar medium (ISM) in the early universe. This study a
Externí odkaz:
https://doaj.org/article/e275ab7ed87948d092f6e5640d399fa8