Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Nadia L Zakamska"'
Autor:
Yilun Ma, Andy Goulding, Jenny E. Greene, Nadia L. Zakamska, Dominika Wylezalek, Yan-Fei Jiang
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 225 (2024)
Quasar feedback is a key ingredient in shaping galaxy evolution. A rare population of extremely red quasars (ERQs) at z = 2−3 are often associated with high-velocity [O iii ] λ 5008 outflows and may represent sites of strong feedback. In this pape
Externí odkaz:
https://doaj.org/article/dd59bb5741b749879f933807c89364e5
Autor:
J. H. Costa-Souza, Rogemar A. Riffel, Gabriel L. Souza-Oliveira, Nadia L. Zakamska, Marina Bianchin, Thaisa Storchi-Bergmann, Rogério Riffel
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 127 (2024)
We use the James Webb Space Telescope Mid-Infrared Instrument medium-resolution spectrometer observations of the radio-loud active galactic nucleus (AGN) host UGC 8782 to map the warm molecular and ionized gas kinematics. The data reveal spatially re
Externí odkaz:
https://doaj.org/article/48ac1fa8a81c416bad66a0878f38f695
Autor:
Yu-Ching Chen, Yuzo Ishikawa, Nadia L. Zakamska, Xin Liu, Yue Shen, Hsiang-Chih Hwang, David Rupke, Andrey Vayner, Arran C. Gross, Weizhe Liu, Dominika Wylezalek, Sylvain Veilleux, Caroline Bertemes, Nadiia Diachenko, Swetha Sankar
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 92 (2024)
Dual quasars—two active supermassive black holes at galactic scales—represent crucial objects for studying the impact of galaxy mergers and quasar activity on the star formation rate (SFR) within their host galaxies, particularly at cosmic noon w
Externí odkaz:
https://doaj.org/article/1aea4d5e3ca24b99b638fe9570e5c61b
Autor:
Gautham Adamane Pallathadka, Vedant Chandra, Nadia L. Zakamska, Hsiang-Chih Hwang, Yossef Zenati, J. J. Hermes, Kareem El-Badry, Boris T. Gänsicke, Sean Morrison, Nicole R. Crumpler, Stefan Arseneau
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 42 (2024)
We report the discovery of SDSS J022932.28+713002.7, a nascent extremely low-mass (ELM) white dwarf (WD) orbiting a massive (>1 M _⊙ at 2 σ confidence) companion with a period of 36 hr. We use a combination of spectroscopy, including data from the
Externí odkaz:
https://doaj.org/article/62a13503445a400e8b6597480272c441
Autor:
Caroline D. Huang, Wenlong Yuan, Adam G. Riess, Warren Hack, Patricia A. Whitelock, Nadia L. Zakamska, Stefano Casertano, Lucas M. Macri, Massimo Marengo, John W. Menzies, Randall K. Smith
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 83 (2024)
The giant spiral galaxy M101 is host to the nearest recent Type Ia supernova (SN 2011fe) and thus has been extensively monitored in the near-infrared to study the late-time light curve of the SN. Leveraging this existing baseline of observations, we
Externí odkaz:
https://doaj.org/article/d7bb80ad43e44eae888016909a133243
Autor:
Stefan Arseneau, Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska, Gautham Adamane Pallathadka, Nicole R. Crumpler, J. J. Hermes, Kareem El-Badry, Hans-Walter Rix, Keivan G. Stassun, Boris T. Gänsicke, Joel R. Brownstein, Sean Morrison
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 17 (2024)
Measuring the mass–radius relation of individual white dwarfs is an empirically challenging task that has been performed for only a few dozen stars. We measure the white dwarf mass–radius relation using the gravitational redshifts and radii of 13
Externí odkaz:
https://doaj.org/article/15bbd847e35f4c6c9de1df2a48d4f385
Autor:
Andrey Vayner, Nadia L. Zakamska, Yuzo Ishikawa, Swetha Sankar, Dominika Wylezalek, David S. N. Rupke, Sylvain Veilleux, Caroline Bertemes, Jorge K. Barrera-Ballesteros, Hsiao-Wen Chen, Nadiia Diachenko, Andy D. Goulding, Jenny E. Greene, Kevin N. Hainline, Fred Hamann, Timothy Heckman, Sean D. Johnson, Hui Xian Grace Lim, Weizhe Liu, Dieter Lutz, Nora Lützgendorf, Vincenzo Mainieri, Ryan McCrory, Grey Murphree, Nicole P. H. Nesvadba, Patrick Ogle, Eckhard Sturm, Lillian Whitesell
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 2, p 126 (2024)
Quasar-driven galactic outflows are a major driver of the evolution of massive galaxies. We report observations of a powerful galactic-scale outflow in a z = 3 extremely red and intrinsically luminous ( L _bol ≃ 5 × 10 ^47 erg s ^−1 ) quasar SDS
Externí odkaz:
https://doaj.org/article/d182e3733e2443eea15bdfc40012bdbb
Autor:
Junyao Li, Xin Liu, Yue Shen, Masamune Oguri, Arran C. Gross, Nadia L. Zakamska, Yu-Ching Chen, Hsiang-Chih Hwang
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 1, p L16 (2023)
We report Hubble Space Telescope (HST) Wide Field Camera 3 deep IR (F160W) imaging of SDSS J1608+2716. This system, located at a redshift of z = 2.575, was recently reported as a triple-quasar candidate with subarcsecond separations (∼0.″25) base
Externí odkaz:
https://doaj.org/article/23d4791fcbe04093b4f760c0e24a3462
Autor:
David S. N. Rupke, Dominika Wylezalek, Nadia L. Zakamska, Sylvain Veilleux, Caroline Bertemes, Yuzo Ishikawa, Weizhe Liu, Swetha Sankar, Andrey Vayner, Hui Xian Grace Lim, Ryan McCrory, Grey Murphree, Lillian Whitesell, Lu Shen, Guilin Liu, Jorge K. Barrera-Ballesteros, Hsiao-Wen Chen, Nadiia Diachenko, Andy D. Goulding, Jenny E. Greene, Kevin N. Hainline, Fred Hamann, Timothy Heckman, Sean D. Johnson, Dieter Lutz, Nora Lützgendorf, Vincenzo Mainieri, Nicole P. H. Nesvadba, Patrick Ogle, Eckhard Sturm
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 2, p L26 (2023)
The [O iii ] 5007 Å emission line is the most common tracer of warm, ionized outflows in active galactic nuclei across cosmic time. JWST newly allows us to use mid-IR spectral features at both high spatial and spectral resolution to probe these same
Externí odkaz:
https://doaj.org/article/f8e91d05a854485d9e5bc34d4056e57d
Autor:
Yu-Ching Chen, Xin Liu, Joseph Lazio, Peter Breiding, Sarah Burke-Spolaor, Hsiang-Chih Hwang, Yue Shen, Nadia L. Zakamska
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 29 (2023)
Dual and off-nucleus active supermassive black holes are expected to be common in the hierarchical structure formation paradigm, but their identification at parsec scales remains a challenge due to strict angular resolution requirements. We conducted
Externí odkaz:
https://doaj.org/article/a87a2dff92e8448faa2ba7f8940d7439