14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS243 papers
- University of FloridaUS242 papers
- Louisiana State UniversityUS240 papers
- Massachusetts Institute of TechnologyUS239 papers
- University of MichiganUS238 papers
- Columbia UniversityUS235 papers
- Goddard Space Flight CenterUS233 papers
- Stanford UniversityUS220 papers
- University of BirminghamGB220 papers
- Pennsylvania State UniversityUS219 papers
- University of Maryland, College ParkUS216 papers
- Hobart and William Smith CollegesUS214 papers
34 papers · 1 filter
LeMMINGs VII: 5 GHz, 50 mas e-MERLIN observations of a statistically complete sample of nearby AGN
D. R. A. Williams-Baldwin, R. D. Baldi, R. J. Beswick +36
We present 5 GHz e-MERLIN radio images at 50 mas resolution of the nuclear regions of the Legacy e-MERLIN Multi-band Imaging of Nearby Galaxies survey (LeMMINGs), the deepest stati…
The Diffuse Ionized Gas of the Large Magellanic Cloud
B. M. Smart, L. M. Haffner, K. A. Barger +4
The Large Magellanic Cloud (LMC) has an extensive H emission halo that traces an extended, warm ionized component of its interstellar medium. Using the Wisconsin H Mapper (…
Extinction towards the cluster R136 in the Large Magellanic Cloud: An extinction law from the near-infrared to the ultraviolet
Sarah A. Brands, Alex de Koter, Joachim M. Bestenlehner +4
The cluster R136 in the giant star-forming region 30 Doradus in the Large Magellanic Cloud (LMC) offers a unique opportunity to resolve a stellar population in a starburst-like env…
Revisit of open clusters UPK 39, UPK 41 and PHOC 39 : a new binary open cluster found
Xianhao Ye, Jingkun Zhao, Terry D. Oswalt +2
We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (\texttt{c1} hereafter), UPK 41 (\texttt{c2} hereafter) in Sim et al. (2019) and PHOC 39 (\texttt{c3}…
Gas accretion onto galaxies and Kelvin-Helmholtz turbulence
Itzhak Goldman, Robert Fleck
Continued star formation over the lifetime of a galaxy suggests that low metalicity gas is steadily flowing in from the circumgalactic medium. Also, cosmological simulations of lar…
The TELPERION Survey for Distant [O III] Clouds around Luminous and Hibernating AGN
William C. Keel, Alexei Moiseev, D. V. Kozlova +5
We present a narrowband [O III] imaging survey of 111 AGN hosts and 17 merging-galaxy systems, in search of distant extended emission-line regions (EELRs) around AGN (either extant…
The GBT Diffuse Ionized Gas Survey (GDIGS): Survey Overview and First Data Release
L. D. Anderson, Matteo Luisi, Bin Liu +6
The Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS) traces ionized gas in the Galactic midplane by measuring GHz radio recombination line (RRL) emission. The nom…
Mapping the Supernovae Driven Winds of the Large Magellanic Cloud in H Emission I
Drew A. Ciampa, Kathleen A. Barger, Nicolas Lehner +7
We present the first spectroscopically resolved \ha\ emission map of the Large Magellanic Cloud's (LMC) galactic wind. By combining new Wisconsin H-alpha Mapper (WHAM) observations…
Nearly 30,000 late-type main-sequence stars with stellar age from LAMOST DR5
Jiajun Zhang, Jingkun Zhao, Terry D. Oswalt +3
We construct a sample of nearly 30,000 main-sequence stars with 4500K 5000K and stellar ages estimated by the chromospheric activityage relation. This sample is u…
Two Portions of Sagittarius Stream in the LAMOST Complete Spectroscopic Survey of Pointing Area at Southern Galactic Cap
J. K. Zhao, X. H. Ye, H. Wu +6
We constructed a sample of 13,798 stars with , log , [Fe/H], radial velocity, proper motions and parallaxes from LAMOST DR5 and Gaia DR2 in the LAMOST Complete Spect…
The dynamics of the broad-line region in NGC 3227
Nick Devereux
Archival Hubble Space Telescope (HST) observations of the Seyfert 1 nucleus of NGC 3227 obtained with the Space Telescope Imaging Spectrograph (STIS) are re-examined in order to co…
The Effect of Bars on the Ionized ISM: Optical Emission Lines from Milky Way Analogs
Dhanesh Krishnarao, Christy Tremonti, Amelia Fraser-McKelvie +15
Gas interior to the bar of the Milky Way has recently been shown as the closest example of a Low Ionization (Nuclear) Emission Region--LI(N)ER--in the universe. To better understan…
Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas
Dhanesh Krishnarao, Robert A. Benjamin, L. Matthew Haffner
Optical emission lines are used to categorize galaxies into three groups according to their dominant central radiation source: active galactic nuclei, star formation, or low-ioniza…
Discovery of High-Velocity H Emission in the Direction of the Fermi Bubble
Dhanesh Krishnarao, Robert A. Benjamin, L. Matthew Haffner
Wisconsin H-Alpha Mapper (WHAM) observations reveal high-velocity and [NII] emission lines in the same direction and velocity as ultraviolet absorption-line features t…
H Distances to the Leading Arm of the Magellanic Stream
Jacqueline Antwi-Danso, Kathleen A. Barger, L. Matthew Haffner
The Leading Arm is a tidal feature that is in front of the Magellanic Clouds on their orbit through the Galaxy's halo. Many physical properties of the Leading Arm, such as its mass…
A minimum-hypothesis explanation for the Radcliffe Wave: Kelvin-Helmholtz instability
Robert Fleck
It is suggested that the wavelike character of the recently discovered 2.7-kiloparsec spatially and kinematically coherent complex of interstellar clouds in the solar neighborhood-…
The GBT Diffuse Ionized Gas Survey: Tracing the Diffuse Ionized Gas around the Giant HII Region W43
Matteo Luisi, L. D. Anderson, Bin Liu +4
The Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS) is a fully-sampled radio recombination line (RRL) survey of the inner Galaxy at C-band (4-8 GHz). We average toget…
The Diffuse Ionized Gas Halo of the Small Magellanic Cloud
Brianna M Smart, Lawrence M Haffner, Kat Barger +2
Observations with the Wisconsin H-alpha Mapper (WHAM) reveal a large, diffuse ionized halo that surrounds the Small Magellanic Cloud (SMC). We present the first kinematic H-alpha s…
Inflowing Gas in the Central Parsec of M81
Nick Devereux
Spectroscopic observations of the Seyfert 1/Liner nucleus of M81, obtained recently with the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope (HST), ha…
An [O III] search for extended emission around AGN with H I mapping: a distant cloud ionized by Mkn 1
Erin Darnell Knese, William C. Keel, Greg Knese +4
Motivated by the discovery of large-scale ionized clouds around AGN host galaxies, and particularly the large fraction of those which are consistent with photoionized gaseous tidal…
The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands
Haoyu Fan, L. M. Hobbs, Julie A. Dahlstrom +7
Aiming for a new and more comprehensive DIB catalog between 4,000 and 9,000Å, we revisited the Atlas Catalog based on the observations of HD 183143 and HD 204827 (Hobbs et al. 2008…
Optical Detection of Star Formation in a Cold Dust Cloud in the Counterjet Direction of Centaurus A
William C. Keel, Julie K. Banfield, Anne Medling +1
We identify optical emission-line features 700" (12 kpc) southwest of the nucleus of Centaurus A, roughly opposite the radio jet and well-known optical emission filaments associate…
AGN photoionization of gas in companion galaxies as a probe of AGN radiation in time and direction
William C. Keel, Vardha N. Bennert, Anna Pancoast +9
We consider AGN photoionization of gas in companion galaxies (cross-ionization) as a way to sample the intensity of AGN radiation in both direction and time, independent of the gas…
The Behavior of Selected Diffuse Interstellar Bands with Molecular Fraction in Diffuse Atomic and Molecular Clouds
Haoyu Fan, Daniel E. Welty, Donald G. York +10
We study the behavior of eight diffuse interstellar bands (DIBs) in different interstellar environments, as characterized by the fraction of hydrogen in molecular form [(H)]…