Nadiia Diachenko

ORCID: 0009-0003-5128-2159
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About
Contact & Profiles
Research Areas
  • Galaxies: Formation, Evolution, Phenomena
  • Astrophysical Phenomena and Observations
  • Gamma-ray bursts and supernovae
  • Astronomy and Astrophysical Research
  • Astrophysics and Star Formation Studies
  • Stellar, planetary, and galactic studies
  • Cosmology and Gravitation Theories
  • Pulsars and Gravitational Waves Research
  • Astrophysics and Cosmic Phenomena
  • Relativity and Gravitational Theory
  • Astronomical Observations and Instrumentation

Johns Hopkins University
2023-2024

Bloomberg (United States)
2023-2024

Abstract Quasar-driven galactic outflows are a major driver of the evolution massive galaxies. We report observations powerful galactic-scale outflow in z = 3 extremely red and intrinsically luminous ( L bol ≃ 5 × 10 47 erg s −1 ) quasar SDSSJ1652 + 1728 with Near-infrared Spectrograph on board JWST. analyze kinematics rest-frame optical emission lines identify quasar-driven extending out to ∼10 kpc from velocity offset v r ± 500 km high dispersion (FWHM 700–2400 ). Due JWST’s unprecedented...

10.3847/1538-4357/ad0be9 article EN cc-by The Astrophysical Journal 2024-01-01

Abstract Quasar feedback may regulate the growth of supermassive black holes, quench coeval star formation, and impact galaxy morphology circumgalactic medium. However, direct evidence for quasar in action at epoch peak hole accretion z ≈ 2 remains elusive. A good case point is = 1.6 WISEA J100211.29+013706.7 (XID 2028), where past analyses same ground-based data have come to different conclusions. Here, we revisit this object with integral-field unit Near Infrared Spectrograph on board JWST...

10.3847/1538-4357/ace10f article EN cc-by The Astrophysical Journal 2023-08-01

Abstract Massive galaxies formed most actively at redshifts z = 1–3 during the period known as “cosmic noon.” Here we present an emission-line study of extremely red quasar SDSSJ165202.64+172852.3’s host galaxy 2.94, based on observations with Near Infrared Spectrograph integral field unit board JWST. We use standard diagnostic ratios to map sources gas ionization across and a swarm companion galaxies. The dominates photoionization, but also discover shock-excited regions orthogonal cone...

10.3847/1538-4357/ace784 article EN cc-by The Astrophysical Journal 2023-09-21

Abstract Quasar feedback may play a key role in the evolution of massive galaxies. The dust-reddened quasar F2M110648.35+480712 at z = 0.4352 is one few cases its redshift that exhibits powerful through bipolar outflows. Our new observation with integral field unit mode Near-infrared Spectrograph on board JWST opens window to examine this spectacular outflow Pa α emission line ~3× better spatial resolution than previous work. morphology and kinematics nebula confirm existence extending scale...

10.3847/1538-4357/ada772 article EN cc-by The Astrophysical Journal 2025-02-03

Abstract The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may fuel and produce SMBH pairs. Actively accreting pairs are observed as quasars, which vital probes growth. Dual quasars at cosmic noon not well characterized. Gaia observations have enabled a novel technique to identify kiloparsec scales based on the small jitters light centroid two vary stochastically. We present first detailed study z = 2.17, 0 <mml:math...

10.3847/1538-4357/adb4ee article EN cc-by The Astrophysical Journal 2025-03-01

Abstract 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 resolution probe these same winds. Here we present a comparison ground-based, seeing-limited space-based, diffraction-limited [S iv 10.51 μ m maps powerful, kiloparsec-scale outflow Type 1 red quasar SDSS J110648.32+480712.3. data are from Mid-InfraRed Instrument. There close...

10.3847/2041-8213/aced85 article EN cc-by The Astrophysical Journal Letters 2023-08-01

Abstract Dual quasars—two active supermassive black holes at galactic scales—represent crucial objects for studying the impact of galaxy mergers and quasar activity on star formation rate (SFR) within their host galaxies, particularly cosmic noon when SFR peaks. We present JWST/MIRI mid-infrared integral field spectroscopy J074922.96+225511.7, a dual with projected separation 3.8 kpc redshift z = 2.17. detect spatially extended [Fe ii ] 5.34 μ m polycyclic aromatic hydrocarbon (PAH) 3.3...

10.3847/1538-4357/ad4798 article EN cc-by The Astrophysical Journal 2024-06-01

Massive galaxies formed most actively at redshifts $z=1-3$ during the period known as `cosmic noon.' Here we present an emission-line study of extremely red quasar SDSSJ165202.64+172852.3 host galaxy $z=2.94$, based on observations with Near Infrared Spectrograph (NIRSpec) integral field unit (IFU) board JWST. We use standard diagnostic ratios to map sources gas ionization across and a swarm companion galaxies. The dominates photoionization, but also discover shock-excited regions orthogonal...

10.48550/arxiv.2303.06970 preprint EN cc-by arXiv (Cornell University) 2023-01-01

We present JWST MIRI/NIRSpec observations of the extremely red quasar SDSS J165202.64+172852.3 at z~3, one most luminous quasars known to date, driving powerful outflows and hosting a clumpy starburst, amidst several interacting companions. estimate black hole (BH) mass system based on broad H$\alpha$ H$\beta$ lines, as well Pa$\beta$ emission in IR MgII UV. recover very range estimates, with constraints ranging between log $M_{\rm BH}$=9 10.1, which is exacerbated if imposing uniform BLR...

10.48550/arxiv.2404.14475 preprint EN arXiv (Cornell University) 2024-04-22

The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may be an important route to fuel and produce SMBH pairs. Actively accreting pairs can observed as a quasar, which are vital probes growth. Gaia observations have enabled novel technique systematically such quasars at previously unreachable sub-kpc scales, based on the small jitters light centroid two vary stochastically. Here we present first detailed study 0.46'', 3.8 kpc...

10.48550/arxiv.2403.08098 preprint EN arXiv (Cornell University) 2024-03-12

Quasar feedback may regulate the growth of supermassive black holes, quench coeval star formation, and impact galaxy morphology circumgalactic medium. However, direct evidence for quasar in action at epoch peak hole accretion z ~ 2 remains elusive. A good case point is = 1.6 WISEA J100211.29+013706.7 (XID 2028) where past analyses same ground-based data have come to different conclusions. Here we revisit this object with integral field unit Near Infrared Spectrograph (NIRSpec) on board James...

10.48550/arxiv.2303.08952 preprint EN other-oa arXiv (Cornell University) 2023-01-01

Dual quasars, two active supermassive black holes at galactic scales, represent crucial objects for studying the impact of galaxy mergers and quasar activity on star formation rate (SFR) within their host galaxies, particularly cosmic noon when SFR peaks. We present JWST/MIRI mid-infrared integral field spectroscopy J074922.96+225511.7, a dual with projected separation 3.8 kilo-parsec redshift $z$ 2.17. detect spatially extended [Fe II] 5.34$\rm \mu$m polycyclic aromatic hydrocarbon (PAH)...

10.48550/arxiv.2403.04002 preprint EN arXiv (Cornell University) 2024-03-06

Quasar feedback may play a key role in the evolution of massive galaxies. The dust-reddened quasar, F2M110648.35$+$480712 at $z = 0.4352$ is one few cases its redshift that exhibits powerful quasar through bipolar outflows. Our new observation with integral field unit mode Near-infrared Spectrograph onboard JWST opens window to examine this spectacular outflow Pa$\alpha$ emission line $\sim$3$\times$ better spatial resolution than previous work. morphology and kinematics nebula confirm...

10.48550/arxiv.2410.14291 preprint EN arXiv (Cornell University) 2024-10-18

Red quasars, often associated with potent [OIII] outflows on both galactic and circumgalactic scales, may play a pivotal role in evolution black hole feedback. In this work, we explore the [FeII] emission one such quasar at redshift z = 0.4352, F2M J110648.32+480712.3, using integral field unit (IFU) mode of Near Infrared Spectrograph (NIRSpec) aboard James Webb Space Telescope (JWST). Our observations reveal clumpy gas located to south quasar. By comparing kinematics [OIII], find that...

10.48550/arxiv.2410.22470 preprint EN arXiv (Cornell University) 2024-10-29

We present observations with the Mid-InfraRed Instrument (MIRI) and Near-InfraRed Spectrograph (NIRSpec) on board James Webb Space Telescope (JWST), targeting extremely red quasar J165202.64+172852.3 at $z = 2.948$ (dubbed J1652). As one of most luminous quasars known to date, it drives powerful outflows hosts a clumpy starburst, in midst several interacting companions. estimated black hole (BH) mass system based broad lines, as well emission infrared ultraviolet. recovered very range...

10.1051/0004-6361/202450451 article EN Astronomy and Astrophysics 2024-12-02

The [OIII] 5007 A 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-infrared spectral features at both high spatial and resolution probe these same winds. Here we present a comparison ground-based, seeing-limited space-based, diffraction-limited [SIV] 10.51 micron maps powerful, kiloparsec-scale outflow Type 1 red quasar SDSS J110648.32+480712.3. data are from Mid-InfraRed Instrument (MIRI). There...

10.48550/arxiv.2306.12541 preprint EN cc-by arXiv (Cornell University) 2023-01-01

Quasar-driven galactic outflows are a major driver of the evolution massive galaxies. We report observations powerful galactic-scale outflow in $z=3$ extremely red, intrinsically luminous ($L_{\rm bol}\simeq 5\times 10^{47}$erg s$^{-1}$) quasar SDSSJ1652+1728 with Near Infrared Spectrograph (NIRSpec) on board JWST. analyze kinematics rest-frame optical emission lines and identify quasar-driven extending out to $\sim 10$ kpc from velocity offset ($v_{r}=\pm 500$ km high dispersion...

10.48550/arxiv.2307.13751 preprint EN cc-by arXiv (Cornell University) 2023-01-01
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