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Lista de obras de William C. Keel

A SCUBA Galaxy in the Protocluster around 53W002 atz = 2.4 ⬇️

scientific article published in the Astrophysical Journal

A Supergiant-Dominated Starburst in the Nucleus of NGC 4569

article

A comparison of the physical conditions in nuclear, hotspot, and disk H II regions

artículo científico publicado en 1989

A deep radio survey of Abell 2125. I. Radio, optical, and near-infrared observations

artículo científico publicado en 2005

A deep radio survey of Abell 2125. II. Accelerated galaxy evolution during a cluster-cluster merger

artículo científico publicado en 2005

A deep radio survey of Abell 2125. III. The cluster core: merging and stripping

artículo científico publicado en 2006

A late-forming galaxy

artículo científico publicado en 1984

A nearby galaxy in the deep-ultraviolet: Voyager 2 observations of M33 from Ly{alpha} to the Lyman limit ⬇️

artículo científico publicado en 1998

A new optical flare in the OJ 287 blazar

A period study for RZ Cas

artículo científico publicado en 1976

A radio-quiet emission-line jet in the type 2 Seyfert galaxy NGC 7682

artículo científico publicado en 1985

A simple prediction of the surface density of galaxies at z =~ 6 ⬇️

artículo científico publicado en 2002

A simulation atlas of tidal features in galaxies ⬇️

artículo científico publicado en 1993

A spiral galaxy at z = 0.366 which overlaps the image of the quasar 4C 39.47 ⬇️

artículo científico publicado en 1989

AGN photoionization of gas in companion galaxies as a probe of AGN radiation in time and direction

artículo científico publicado en 2018

About AGN ionization echoes, thermal echoes and ionization deficits in low-redshift Lyα blobs ⬇️

artículo científico publicado en 2016

Active nuclei and star-forming objects at z>2: metallicities, winds, and formation histories

scholarly article

Additional BVRI photometry of the recurrent nova M31N 1963-09c during the 2015 eruption

artículo científico publicado en 2015

An Half survey of the nuclei of a complete sample of spiral galaxies

artículo científico publicado en 1983

An Unusual Radio Galaxy in Abell 428: A Large, Powerful FR I Source in a Disk‐dominated Host ⬇️

artículo científico publicado en 1998

An atlas of warm AGN and starbursts from the IRAS deep fields

artículo científico publicado en 2003

An atlas of warm active galactic nuclei and starbursts from the IRAS deep fields

An extended dust disk in a spiral galaxy: an occulting galaxy pair in the ACS nearby galaxy survey treasury

artículo científico publicado en 2009

An h{alpha} survey of the butcher-oemler cluster Abell 851

Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters

scholarly article by Lankeswar Dey et al published 5 October 2018 in The Astrophysical Journal

Automated Morphological Classification in Deep [ITAL]Hubble Space Telescope UBVI[/ITAL] Fields: Rapidly and Passively Evolving Faint Galaxy Populations ⬇️

artículo científico publicado en 1996

BVRI photometry of the classic Type II-P supernova 2017eaw in NGC 6946: d 3 to d 594

artículo científico publicado en 2019

BVRI photometry of the recurrent nova LMCN 1968-12a during the 2016 eruption with the SARA-CT telescope

artículo científico publicado en 2016

Black Hole Growth and Host Galaxy Morphology

scholarly article by Kevin Schawinski et al published August 2009 in Proceedings of the International Astronomical Union

Broad-line reverberation in the Kepler-field Seyfert galaxy Zw 229-015 ⬇️

scientific article published in the Astrophysical Journal

CO J = 3-2 emission in the radio galaxy 53W002 at z = 2.394 ⬇️

artículo científico publicado en 1997

Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers ⬇️

artículo científico publicado en 2012

Circumnuclear star formation in the central region of the barred spiral galaxy NGC 1097

artículo científico publicado en 1987

Classification of Optical Jets in Galaxies

Cluster mergers as triggers of star formation and radio emission: a comparative study of the rich clusters Abell 2125 and 2645

Compact Ly{alpha}-emitting candidates at z =~ 2.4 in deep medium-band Hubble space telescope WFPC2 images

artículo científico publicado en 1998

Crashing galaxies, cosmic fireworks

artículo científico publicado en 1989

Crepuscular Rays from the Highly Inclined Active Galactic Nucleus in IC 5063*

artículo científico publicado en 2020

Deep HST Imaging of a Galaxy Cluster at Z=2.40

Deep HST imaging of distant weak radio and field galaxies ⬇️

Deep HST/PC imaging of a young elliptical radio galaxy at z = 2.390

scholarly article in Bulletin of the American Astronomical Society, vol. 26, 1994

Deep Hubble Space Telescope imaging of 53W044: an S0 radiogalaxy at z=0.311

artículo científico publicado en 1993

Deep Hubble Space Telescope imaging of a compact radio galaxy at z = 2.390 ⬇️

artículo científico publicado en 1992

Deep Hubble Space Telescope/Planetary Camera imaging of a young compact radio galaxy at z = 2.390 ⬇️

scholarly article

Deep Hubble space telescope galaxy and pair counts as tests of merger history

artículo científico publicado en 1998

Deep spectroscopy of the MV ~ -14.8 host galaxy of a tidal disruption flare in A1795 ⬇️

artículo científico publicado en 2014

Detection of large Faraday rotation in the inner 2 Kiloparsecs of M 87 ⬇️

artículo científico publicado en 1990

Direct measurement of the optical depth in a spiral galaxy

scientific article published in Nature

Dual emission-line regions in the Seyfert galaxy NGC 5929

scientific article published in Nature

Dust in backlit galaxies: properties of the foreground systems in NGC 3314 and NGC 1275

artículo científico publicado en 1983

Dust in spiral galaxies: comparing emission and absorption to constrain small-scale and very cold structures

artículo científico publicado en 1999

Dusty galaxies at z > 1

artículo científico publicado en 2003

Environment impact on the nuclear radio activity in spiral galaxies

artículo científico publicado en 1990

Erratum: Direct measurement of the optical depth in a spiral galaxy

artículo científico publicado en 1992

Escape of Ly{alpha} emission in the starburst galaxy Markarian 357: a wind's far side

Evidence for large-scale structure at z {approx} 2.4 from Ly{alpha} imaging

artículo científico publicado en 1999

Evolution of the Galaxy Merger Rate: Counting Pairs in HST Fields (Poster paper)

article

Extended X-ray emission in the IC 2497 – Hanny's Voorwerp system: energy injection in the gas around a fading AGN ⬇️

article

Extinction and the wavelength-dependent positions of the nuclei NGC 6240

scholarly article

Extranuclear high-excitation gas in the starburst galaxy NGC 2782

artículo científico publicado en 1992

Fading AGN Candidates: AGN Histories and Outflow Signatures ⬇️

artículo científico publicado en 2017

Faint B3 radio galaxies: luminosity versus evolution effects

artículo científico publicado en 1995

Far-Ultraviolet Spectroscopy of Star-forming Regions in Nearby Galaxies: Stellar Populations and Abundance Indicators

artículo científico publicado en 2004

Fe II emission and anisotropy in broad-line regions ⬇️

artículo científico publicado en 1991

GRB 110328A/Swift J164449.3+573451: SARA-N detection

artículo científico publicado en 2011

GRB 130427A: SARA-N detection

artículo científico publicado en 2013

GRB 130427A: SARA-N optical observations

artículo científico publicado en 2013

GRB 991216 joins the jet set: discovery and monitoring of its optical afterglow ⬇️

scholarly article

Galaxies through a red giant

scholarly article

Galaxy Zoo 2: detailed morphological classifications for 304 122 galaxies from the Sloan Digital Sky Survey

article

Galaxy Zoo DECaLS: Detailed visual morphology measurements from volunteers and Deep Learning for 314,000 galaxies

artículo científico publicado en 2021

Galaxy Zoo Green Peas: discovery of a class of compact extremely star-forming galaxies

article

Galaxy Zoo and ALFALFA: atomic gas and the regulation of star formation in barred disc galaxies

article

Galaxy Zoo and sparcfire: constraints on spiral arm formation mechanisms from spiral arm number and pitch angles

scholarly article

Galaxy Zoo: A Catalog of Overlapping Galaxy Pairs for Dust Studies

article

Galaxy Zoo: CANDELS barred discs and bar fractions ⬇️

article

Galaxy Zoo: Major Galaxy Mergers Are Not a Significant Quenching Pathway

artículo científico publicado en 2017

Galaxy Zoo: Mergers – Dynamical models of interacting galaxies ⬇️

article

Galaxy Zoo: Morphological Classification of Galaxy Images from the Illustris Simulation

artículo científico publicado en 2018

Galaxy Zoo: bars in disc galaxies★

article

Galaxy Zoo: building the low-mass end of the red sequence with local post-starburst galaxies★

artículo científico publicado en 2012

Galaxy Zoo: constraining the origin of spiral arms

artículo científico publicado en 2018

Galaxy Zoo: dust and molecular gas in early-type galaxies with prominent dust lanes★

article

Galaxy Zoo: dust in spiral galaxies★

article

Galaxy Zoo: quantifying morphological indicators of galaxy interaction★

article

Galaxy Zoo: the environmental dependence of bars and bulges in disc galaxies

article

Galaxy Zoo: the fundamentally different co-evolution of supermassive black holes and their early- and late-type host galaxies ⬇️

artículo científico publicado en 2010

Galaxy Zoo: unwinding the winding problem - observations of spiral bulge prominence and arm pitch angles suggest local spiral galaxies are winding

artículo científico publicado en 2019

Galaxy Zoo: ‘Hanny's Voorwerp’, a quasar light echo?

article

Galaxy pairs in deep HST images: Evidence for evolution in the galaxy merger rate

artículo científico publicado en 1994

Galaxy pairs, star formation and nuclear activity : searching for the link

artículo científico publicado en 1993

Galaxy zoo builder: Morphological dependence of spiral galaxy pitch angle

scientific article published in 2021

Gemini Multi-Object Spectrograph Observations of SCUBA Galaxies behind A851 ⬇️

artículo científico publicado en 2002

Gems of the Galaxy Zoos—A Wide-ranging Hubble Space Telescope Gap-filler Program*

artículo científico publicado en 2022

Gravitational interactions in poor galaxy groups

artículo científico publicado en 1997

HST Observations of Young Star Clusters in Interacting Galaxies

scholarly article

HST and gemini images of the radio galaxy 0313-192: a giant radio source from the wrong kind of galaxy

scholarly article

HST imaging of distant giant elliptical radio galaxies

scholarly article in Bulletin of the American Astronomical Society, vol. 23, 1991

HST imaging of fading AGN candidates. I. Host-galaxy properties and origin of the extended gas ⬇️

scientific article published in Astronomical Journal

HST observations of Abell 2125: radio emission and the Butcher-Oemler effect

scholarly article

HST/FOS spectroscopy of early-type radio galaxies at z inf. 0.6

artículo científico publicado en 1993

Hanny's Voorwerp

artículo científico publicado en 2010

High-Resolution Observations of the M81 Nucleus

High-resolution observations of the multicomponent nucleus of NGC 5929

artículo científico publicado en 1989

II Zw 23: a galaxy in formation ?

scholarly article

Inclination effects on the recognition of Seyfert galaxies

artículo científico publicado en 1980

Inclination effects on the recognition of Seyfert galaxies

artículo científico publicado en 1980

Induced nuclear emission-line activity in interacting spiral galaxies ⬇️

Infrared space observatory observations of the 53W002 group at 6.7 microns: in search of the oldest stellar populations at z = 2.4

Jets and loops from the nucleus of NGC 2655

artículo científico publicado en 1988

Joint NuSTAR and Chandra analysis of the obscured quasar in IC 2497 - Hanny's Voorwerp system

artículo científico publicado en 2017

Kiloparsec-scale AGN outflows and feedback in merger-free galaxies

artículo científico publicado en 2021

Kinematic regulation of star formation in interacting galaxies

artículo científico publicado en 1993

Kuiper Belt Occultation Predictions

article

Limits to Rest-frame Ultraviolet Emission from Far-infrared-luminous <i>z</i> ≃ 6 Quasar Hosts

artículo científico publicado en 2020

Long-slit spectroscopy of 3C 31, 3C 75, 3C 465, NGC 1265 and Cygnus A ⬇️

Mass transfer and star formation in the early-type galaxy of a mixed pair, AM 0327-285

artículo científico publicado en 1995

Massive Star Clusters in Ongoing Galaxy Interactions: Clues to Cluster Formation

artículo científico publicado en 2003

Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A

scientific article published in Science

Multiple high-velocity emission-line systems in the E+S pair CPG 29 ⬇️

scholarly article

Near-infrared imaging of a z = 6.42 quasar host galaxy with the Hubble space telescope wide field camera 3 ⬇️

New active galactic nuclei from the IRAS deep fields

artículo científico publicado en 1988

Nuclear outflow from the edge-on galaxy NGC 3628 ⬇️

artículo científico publicado en 1990

Observational tests of QSO amplification by condensed objects in galactic halos

artículo científico publicado en 1982

Ongoing mass transfer in the interacting galaxy pair NGC 1409/10

scholarly article

Ongoing mass transfer in the interacting galaxy pair NGC 1409/1410

Optical and near-infrared integral field spectroscopy of the SCUBA galaxy N2 850.4

artículo científico publicado en 2005

Optical continuum shapes of extragalactic radio jets

Optical detection of star formation in a cold dust cloud in the counterjet direction of Centaurus A

artículo científico publicado en 2019

Optical properties of spiral galaxies with strong nuclear radio sources: active nuclei, starbursts, and composite objects ⬇️

artículo científico publicado en 1984

Optical spectrophotometry of the M 87 jet and its environs ⬇️

Optical spectroscopy of candidate hot spots in radio galaxies and quasars

artículo científico publicado en 1995

Optical spectroscopy of candidate radio hot spots

artículo científico publicado en 1994

Optical spectroscopy of radio galaxies in Abell clusters. I. Redshifts and emission-line properties

article published in 1995

Optical spectroscopy of radio galaxies in Abell clusters. II. BL Lacs and FR I unification

artículo científico publicado en 1996

Optical spectroscopy of radio jets in 3C 31, 3C 75, 3C 83.1B, and 3C 465

Pairing properties of Markarian starburst galaxies

artículo científico publicado en 1992

Pictor A: discovery of strong Balmer line variations

artículo científico publicado en 1994

Planet hunters: a transiting circumbinary planet in a quadruple star system ⬇️

scientific article published in the Astrophysical Journal

Planets, Stars and Stellar Systems

Possible nova in NGC 3314

scholarly article

Pre-discovery imaging and high-resolution spectroscopy at maximum light of the unique supernova 1984 in NGC 3169

scholarly article

Pre-explosion Upper Limit on X-ray Emission from a Progenitor for SN 2014J

artículo científico publicado en 2014

Primary black hold spin in OJ 287 as determined by the general relativity centenary flare ⬇️

artículo científico publicado en 2016

Probing quasar shutdown timescales with Hanny's Voorwerp

Properties of Dust in Backlit Galaxies

Radio‐selected Galaxies in Very Rich Clusters atz≤ 0.25. I. Multiwavelength Observations and Data Reduction Techniques

scholarly article

Recognition and classification of galaxies with optical jets ⬇️

artículo científico publicado en 1985

Revealing Hanny's Voorwerp: radio observations of IC 2497

scientific article published in Astronomy and Astrophysics

Rotation Curves and Velocity Measures for Spiral Galaxies in Pairs

article

Seeing Galaxies through Thick and Thin. I. Optical Opacity Measures in Overlapping Galaxies ⬇️

artículo científico publicado en 2000

Seeing galaxies through thick and thin. II. Direct measures of extinction in spiral disks through spectroscopy of overlapping galaxies ⬇️

artículo científico publicado en 2000

Seeing galaxies through thick and thin. III. Hubble Space Telescope imaging of the dust in backlit spiral galaxies

artículo científico publicado en 2001

Seeing galaxies through thick and thin. IV. The superposed spiral galaxies of NGC 3314

artículo científico publicado en 2001

Seyfert galaxies with companions : orbital and kinematic clues to AGN triggering

artículo científico publicado en 1996

Shock excitation, nuclear activity, and star formation in NGC 6240

Spatially resolved spectra of the "Teacup" active galactic nucleus: tracing the history of a dying quasar ⬇️

artículo científico publicado en 2014

Spectroscopic evidence for activity in the nuclei of normal spiral galaxies ⬇️

Spiral Disk Opacity from Occulting Galaxy Pairs in the Sloan Digital Sky Survey

artículo científico publicado en 2007

Stellar Abundances and Molecular Hydrogen in High-Redshift Galaxies: The Far-Ultraviolet View

artículo científico publicado en 2006

Sub-galactic clumps at a redshift of 2.39 and implications for galaxy formation

artículo científico publicado en 1996

Supernova 1985S in IRAS 0225-103

artículo científico publicado en 1993

Surface brightness profiles of composite images of compact galaxies at z =~ 4-6 in the Hubble Ultra Deep Field

artículo científico publicado en 2007

Survey of bright galactic nuclei

artículo científico publicado en 1978

The 2005 November Outburst in OJ 287 and the Binary Black Hole Model ⬇️

artículo científico publicado en 2006

The 8 April 1976 (U.T.) occultation of epsilon Geminorum by Mars

artículo científico publicado en 1977

The Detection Of A Large, Powerful Fr I Radio Galaxy In A Spiral Host

The Diversity of Extremely Red Objects ⬇️

artículo científico publicado en 2002

The Galaxy Zoo survey for giant AGN-ionized clouds: past and present black hole accretion events

article

The Morphological Mix of Field Galaxies to [ITAL]m[/ITAL][TINF][ITAL]I[/ITAL][/TINF] = 24.25 Magnitudes ([ITAL]b[/ITAL][TINF][ITAL]J[/ITAL][/TINF] ∼ 26 Magnitudes) from a Deep [ITAL]Hubble Space Telescope[/ITAL] WFPC2 Image ⬇️

The Nature of Optical Features in the Inner Region of the 3C 48 Host Galaxy ⬇️

scientific article published in the Astrophysical Journal

The Rest‐Frame Optical Spectra of SCUBA Galaxies ⬇️

artículo científico publicado en 2004

The Serendipitous Discovery of a Group or Cluster of Young Galaxies at [ITAL]z[/ITAL] ≃ 2.40 in Deep [ITAL]Hubble Space Telescope[/ITAL] WFPC2 Images ⬇️

The TELPERION survey for distant [O  iii ] clouds around luminous and hibernating AGN

The active nucleus of M 81 and its history

scholarly article

The current ability of HST to reveal morphological structure in medium-redshift galaxies

artículo científico publicado en 1991

The dependence of the AV prior for SN Ia on host mass and disc inclination

scholarly article

The disappearance of Ly{alpha} blobs: a GALEX search at z = 0.8

The distribution of ionized gas in the nuclei of spiral galaxies ⬇️

artículo científico publicado en 1983

The dynamic interstellar medium in NGC 4438

scholarly article

The dynamics of A2125 ⬇️

artículo científico publicado en 2004

The effects of interactions on spiral galaxies. I. Nuclear activity and star formation

artículo científico publicado en 1985

The effects of interactions on spiral galaxies. II. Disk star-formation rates

artículo científico publicado en 1987

The effects of interactions on spiral galaxies. III. A radio continuum survey of galactic nuclei at 1.49 GHz

The green valley is a red herring: Galaxy Zoo reveals two evolutionary pathways towards quenching of star formation in early- and late-type galaxies★ ⬇️

article

The history and environment of a faded quasar: Hubble Space Telescope observations of Hanny's Voorwerp and IC 2497

artículo científico publicado en 2012

The host galaxy of Markarian 231 ⬇️

scholarly article

The infrared counterparts of the optically unidentified Chandra Deep Field-South 1 ms sources ⬇️

artículo científico publicado en 2003

The interacting spiral galaxy NGC 5395

artículo científico publicado en 1985

The jet of PKS 0521-36: an aging counterpart of M 87 ? ⬇️

artículo científico publicado en 1986

The local merger rate of disk galaxies

artículo científico publicado en 1995

The nature of faint galaxies from the medium deep survey and other deep HST images

The nature of the ionizing source of the nuclear gas in NGC 1052 ⬇️

scholarly article

The nature of the light variations in the double QSO Q0957+561 ⬇️

artículo científico publicado en 1982

The nature of the optical ''jets'' in the spiral galaxy NGC 1097

artículo científico publicado en 1997

The occulting galaxy pair UGC 3995. Dust properties from HST and CALIFA data

scientific article published in Astronomy and Astrophysics

The optical continua of extragalactic radio jets ⬇️

artículo científico publicado en 1988

The properties and environment of the giant, infrared-luminous galaxy IRAS 09104 + 4109 ⬇️

scientific article published in the Astrophysical Journal

The real astrophysical zoo : colliding galaxies

scholarly article

The recent behavior of the period of U Cep

artículo científico publicado en 1977

The remote observatories of the Southeastern Association for Research in Astronomy (SARA) ⬇️

artículo científico publicado en 2017

The spiral host galaxy of the double radio source 0313-192

artículo científico publicado en 2006

The stellar population in the Wolf-Rayet knot in NGC 5430

artículo científico publicado en 1987

The structure of radio emission in the inner few hundrer parsecs of spiral galaxies

artículo científico publicado en 1981

The sudden death of the nearest quasar ⬇️

article

The ultraviolet attenuation law in backlit spiral galaxies ⬇️

artículo científico publicado en 2014

The ultraviolet spectra of nearby radio galaxies ⬇️

artículo científico publicado en 1991

Three-dimensional reconstruction of dust structures in galactic nuclei

artículo científico publicado en 2004

Tracing the gas in galaxies

Two active galaxies with tidal tails and companions

artículo científico publicado en 1985

Two interesting cases of oddball AGN

Ultraviolet signposts of resonant dynamics in the starburst-ringed Sab galaxy M94 (NGC 4736)

artículo científico publicado en 2001

Ultraviolet spectrophotometry of three LINERs ⬇️

artículo científico publicado en 1986

Unity and Diversity Among Jets in Active Galaxies

scholarly article

VLT/VIMOS observations of an occulting galaxy pair: redshifts and effective extinction curve

article by Benne Holwerda et al published 4 June 2013 in Monthly Notices of the Royal Astronomical Society

Variability and stability in blazar jets on time-scales of years: optical polarization monitoring of OJ 287 in 2005-2009

artículo científico publicado en 2010

Variability of the double quasar 0957+561A, B

Very low luminosity active galaxies and the X-ray background ⬇️

artículo científico publicado en 1984

Warm IRAS sources from the Point Source Catalog. III. Emission-line properties, correlations, and AGN unified models

scholarly article

Warm IRAS sources from the point source catalog. IV. Extended optical line emission

artículo científico publicado en 1994

Warm IRAS sources. II. Optical spectroscopy of objects from the point source catalog

Wolf-Rayet stars and an extraordinary star-forming region in the barred spiral galaxy NGC 5430

artículo científico publicado en 1982

X-ray, optical, and radio properties of quasars ⬇️

artículo científico publicado en 1982

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