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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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99 papers · 2 filters
Mass/Light Variations with Environment
R. Brent Tully
In the local part of the universe, a majority of the total mass is in only a small number of groups with short dynamical times. The Virgo Cluster dominates far out of proportion to…
Radio Galaxies at z = 1.1 to 3.8: Adaptive-Optics Imaging and Archival Hubble Space Telescope Data
E. Steinbring, D. Crampton, J. B. Hutchings
We have undertaken a program of high-resolution imaging of high-redshift radio galaxies (HzRGs) using adaptive optics on the Canada-France-Hawaii Telescope. We report on deep imagi…
Far-Infrared Galaxies in the Far-Ultraviolet
Jeffrey D. Goldader, Gerhardt Meurer, Timothy M. Heckman +4
In an effort to better understand the UV properties of ultraluminous infrared galaxies (ULIGs), and compare them to the rest-frame UV properties of high redshift sub-mm and Lyman-b…
3--4 m Spectroscopy of Seyfert 2 Nuclei to Quantitatively Assess the Energetic Importance of Compact Nuclear Starbursts
Masatoshi Imanishi
We report on 3--4 m slit spectroscopy of 13 Seyfert 2 nuclei. The 3.3 m polycyclic aromatic hydrocarbon (PAH) emission is used to estimate the magnitudes of compact ( a fe…
Kinematics of the HH 111 jet from STIS spectra
A. C. Raga, A. Noriega-Crespo, B. Reipurth +4
We present a long-slit spectrum of the Herbig-Haro object HH 111, obtained with SITS on the Hubble Space Telescope. This spectrum has a spectral resolution of approx. 50 km/s, so i…
The WARPS Survey: VI. Galaxy Cluster and Source Identifications from Phase I
E. S. Perlman, D. J. Horner, L. R. Jones +4
We present in catalog form the optical identifications for objects from the first phase of the Wide Angle ROSAT Pointed Survey (WARPS). WARPS is a serendipitous survey of relativel…
Evolution of Brightest Cluster Galaxies in X-Ray Clusters
Sarah Brough, Chris Collins, Doug Burke +2
A recent paper (Burke, Collins & Mann 2000) presents the analysis of the K-band Hubble diagram of 76 brightest cluster galaxies (BCGs) in X-ray clusters and shows that the properti…
ISOCAM Mid-InfraRed Detection of HR 10: A Distant Clone of Arp 220 at z=1.44
David Elbaz, Hector Flores, Pierre Chanial +5
We report the detection of the extremely red object (ERO), HR 10 (I-K= 6.5, z=1.44), at 4.9 and 6.1 microns (rest-frame) with ISOCAM, the mid-infrared (MIR) camera onboard the Infr…
Early-type Galaxy Distances from the Fundamental Plane and Surface Brightness Fluctuations
John P. Blakeslee, John R. Lucey, John L. Tonry +3
We compare two methods for deriving distances to early-type galaxies: fundamental plane (FP) and surface brightness fluctuations (SBF) distances for 170 galaxies. A third set of di…
The Mauna Kea Observatories Near-Infrared Filter Set. I: Defining Optimal 1-5 m Bandpasses
D. A. Simons, A. T. Tokunaga
A new MKO-NIR infrared filter set is described, including techniques and considerations given to designing a new set of bandpasses that are useful at both mid- and high-altitude si…
Discovery of Reflection Nebulosity Around Five Vega-like Stars
Paul Kalas, James R. Graham, Steven V. W. Beckwith +2
Coronagraphic optical observations of six Vega-like stars reveal reflection nebulosities, five of which were previously unknown. The nebulosities illuminated by HD 4881, HD 23362,…
Higher Order Moments of the Angular Distribution of Galaxies from Early SDSS Data
István Szapudi, Joshua A. Frieman, Roman Scoccimarro +13
We present initial results for counts in cells statistics of the angular distribution of galaxies in early data from the Sloan Digital Sky Survey (SDSS). We analyze a rectangular s…
A wide-field spectroscopic survey of the cluster of galaxies Cl0024+1654. II. A high-speed collision?
Oliver Czoske, Ben Moore, Jean-Paul Kneib +1
The mass distribution of the rich cluster of galaxies Cl0024+1654 has frequently been used to constrain the nature of dark matter yet a model consistent with all the observational…
Discovery of a 0.15" Binary Brown Dwarf 2MASSJ 1426316+155701 With Gemini/Hokupa'a Adaptive Optics
L. M. Close, D. Potter, W. Brandner +4
Use of the highly sensitive Hokupa'a curvature wavefront sensor has allowed for the first time direct adaptive optics (AO) guiding on brown dwarfs and VLM stars (SpT=M7-L2). An ini…
The Mauna Kea Observatories Near-Infrared Filter Set. II. Specifications for a New JHKL'M' Filter Set for Infrared Astronomy
A. T. Tokunaga, D. A. Simons, W. D. Vacca
We present a description of a new 1--5 m filter set similar to the long-used JHKLM filter set derived from that of Johnson. The new Mauna Kea Observatories Near-Infrared (MKO-NI…
High-resolution HI Mapping of NGC 4038/9 ("The Antennae") and its Tidal Dwarf Galaxy Candidates
J. E. Hibbard, J. M. van der Hulst, J. E. Barnes +1
We present new VLA C+D-array HI observations and optical and NIR imaging of the well known interacting system NGC 4038/9, ``The Antennae''. The radio data reveal a wealth of gaseou…
The extent of NGC 6822 revealed by its C stars population
B. Letarte, S. Demers, P. Battinelli +1
Using the CFH12K camera, we apply the four band photometric technique to identify 904 carbon stars in an area 28' x 42' centered on NGC 6822. A few C stars, outside of this area we…
Limits to Interstellar C_4 and C_5 Towards zeta Ophiuchi
John P. Maier, Gordon A. H. Walker, David A. Bohlender
We have made a sensitive search for the origin bands in the known electronic transitions of the linear carbon chains C_4 and C_5 at 3789 and 5109 A towards zeta Oph (A_V <= 1). The…
On the Origin of Lyman Blobs at High Redshift: Submillimetric Evidence for a Hyperwind Galaxy at z=3.1
Yoshiaki Taniguchi, Yasuhiro Shioya, Yuko Kakazu
The most remarkable class of high-redshift objects observed so far is extended Ly emission-line blobs found in an over-density region at redshift 3.1. They may be either a dust-…
Infrared Views of the TW Hya Disk
A. J. Weinberger, E. E. Becklin, G. Schneider +6
The face-on disk around TW Hya is imaged in scattered light at wavelengths of 1.1 and 1.6 micron using the coronagraph in the Near Infrared Camera and Multi Object Spectrometer abo…
5-micron photometry of late-type dwarfs
I. N. Reid, K. L. Cruz
We present narrowband-M photometry of nine low-mass dwarfs with spectral types ranging from M2.5 to L0.5. Combining the (L'-M') colours derived from our observations with data from…
Distinguishing Local and Global Influences on Galaxy Morphology: An HST Comparison of High and Low X-ray Luminosity Clusters
Michael Balogh, Ian Smail, R. Bower +6
(Abridged) We present a morphological analysis of 17 X-ray selected clusters at z~0.25, imaged uniformly with HST WFPC2. Eight of these clusters have low X-ray luminosities (<10^{4…
Four Brown Dwarfs in the Taurus Star-Forming Region
E. L. Martin, C. Dougados, E. Magnier +4
We have identified four brown dwarfs in the Taurus star-forming region. They were first selected from and CCD photometry of 2.29 square degrees obtained at the Canada-Franc…
The Minimum Universal Metal Density Between Redshifts of 1.5 and 5.5
Antoinette Songaila
It appears that the Lyman alpha forest is becoming thick at a redshift of about 5.5, cutting off the higher redshift intergalactic medium from view in neutral hydrogen. However, th…