Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Ryan C. Hickox"'
Autor:
Ryan W. Pfeifle, Peter G. Boorman, Kimberly A. Weaver, Johannes Buchner, Francesca Civano, Kristin Madsen, Daniel Stern, Núria Torres-Albà, Emanuele Nardini, Claudio Ricci, Stefano Marchesi, D. R. Ballantyne, Dominic Sicilian, Chien-Ting Chen, Elias Kammoun, Ryan C. Hickox, Javier A. García, Labani Mallick
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
A fundamental goal of modern-day astrophysics is to understand the connection between supermassive black hole (SMBH) growth and galaxy evolution. Merging galaxies offer one of the most dramatic channels for galaxy evolution known, capable of driving
Externí odkaz:
https://doaj.org/article/143e915acf0942939c5de988f494af30
Autor:
Shawn M. Usman, Giovanni G. Fazio, Christopher A. Grasso, Ryan C. Hickox, Cameo Lance, William B. Rideout, Daveanand M. Singh, Howard A. Smith, Angelos Vourlidas, Joseph L. Hora, Gary J. Melnick, Matthew Ashby, Volker Tolls, Steven Willner, Salma Benitez
Publikováno v:
Aerospace, Vol 11, Iss 7, p 560 (2024)
In 1979, NASA established the Great Observatory program, which included four telescopes (Hubble, Compton, Chandra, and Spitzer) to explore the Universe. The Spitzer Space Telescope was launched in 2003 into solar orbit, gradually drifting away from t
Externí odkaz:
https://doaj.org/article/41ef64d091e642a48177e8c82816ef33
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L18 (2024)
The discovery of Little Red Dots (LRDs)—a population of compact, high-redshift, dust-reddened galaxies—is one of the most surprising results from JWST. However, the nature of LRDs is still debated: does the near-infrared emission originate from a
Externí odkaz:
https://doaj.org/article/17f53dde214e414a94f4585fbb024c51
Autor:
Serena Perrotta, Alison L. Coil, David S. N. Rupke, Wenmeng Ning, Brendan Duong, Aleksandar M. Diamond-Stanic, Drummond B. Fielding, James E. Geach, Ryan C. Hickox, John Moustakas, Gregory H. Rudnick, Paul H. Sell, Cameren N. Swiggum, Christy A. Tremonti
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 263 (2024)
High-velocity outflows are ubiquitous in compact, massive ( M _* ∼ 10 ^11 M _⊙ ), z ∼ 0.5 galaxies with extreme star formation surface densities (Σ _SFR ∼ 2000 M _⊙ yr ^−1 kpc ^−2 ). We have previously detected and characterized these
Externí odkaz:
https://doaj.org/article/27b0e689e3424d32bac4eb70d2c7a444
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 2, p 184 (2024)
Coupling between relativistic jets launched by accreting supermassive black holes and the surrounding gaseous media is a vital ingredient in galaxy evolution models. To constrain the environments in which this feedback takes place over cosmic time, w
Externí odkaz:
https://doaj.org/article/e244b8a8f49149748202d00387fa22d3
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 130 (2024)
Spectropolarimetry is a powerful tool to investigate the central regions of active galactic nuclei (AGNs) as polarization signatures are key to probing magnetic field structure, evolution, and the physics of particle acceleration in jets. Optical lin
Externí odkaz:
https://doaj.org/article/4d2ec0e47fe74e2b85aa4f2b49135510
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 191 (2024)
Intermediate-mass black holes (IMBHs) are believed to be the missing link between the supermassive black holes (BHs) found at the centers of massive galaxies and BHs formed through stellar core collapse. One of the proposed mechanisms for their forma
Externí odkaz:
https://doaj.org/article/fe0c6bd6c7da445e81b237cd0cdcef02
Publikováno v:
The Astronomical Journal, Vol 166, Iss 3, p 111 (2023)
We present Fabry–Pérot (FP) imaging and longslit spectroscopy of the nearby Seyfert II galaxy NGC 1068 using the Robert Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT) to observe the impact of the central active galactic n
Externí odkaz:
https://doaj.org/article/04351bdfadc34402b723ec3617d7baea
Autor:
Julie D. Davis, Christy A. Tremonti, Cameren N. Swiggum, John Moustakas, Aleksandar M. Diamond-Stanic, Alison L. Coil, James E. Geach, Ryan C. Hickox, Serena Perrotta, Grayson C. Petter, Gregory H. Rudnick, David S. N. Rupke, Paul H. Sell, Kelly E. Whalen
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 105 (2023)
We investigate galactic winds in the HizEA galaxies, a collection of 46 late-stage galaxy mergers at z = 0.4–0.8, with stellar masses of $\mathrm{log}({M}_{* }/{M}_{\odot })=10.4\mbox{--}11.5$ , star formation rates (SFRs) of 20–500 M _⊙ yr ^
Externí odkaz:
https://doaj.org/article/7845c70b86cb4c2e8cf8e55325d7d821
Autor:
Wei Yan, W. N. Brandt, Fan Zou, Shifu Zhu, Chien-Ting J. Chen, Ryan C. Hickox, Bin Luo, Qingling Ni, David M. Alexander, Franz E. Bauer, Cristian Vignali, Fabio Vito
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 27 (2023)
We perform X-ray spectral analyses to derive the characteristics (e.g., column density, X-ray luminosity) of ≈10,200 active galactic nuclei (AGNs) in the XMM-Spitzer Extragalactic Representative Volume Survey, which was designed to investigate the
Externí odkaz:
https://doaj.org/article/12ce69f4155d44eba553518cf2e13ee5