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Hubble Space Telescope
WFPC2 STAN

+----------------------------------------------------------+
| WFPC2
| STScI Analysis Newsletter
| WFPC2 STAN 55
| August 2003
+----------------------------------------------------------+

CONTENTS:

- APT Version 12.3.1

- WFPC2 Header Astrometry and UCHCOORD

- WFPC2 Cycle 12 Calibration Planning

- Instrument Science Reports Since The Previous STAN: 
     03-02 Toward a Multi-Wavelength Geometric Distortion 
           Solution for WFPC2

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APT Version 12.3.1

-Inge Heyer

One notable change for Cycle 12 was the introduction of the
APT proposal preparation tool for Phase II, which is the 
default tool as of Cycle 12. 
A new version of APT (12.3) was released on 7/10 fixing 81 
OPRs, and the followup version 12.3.1 was released on 7/17
fixing issues with wholly internal orbits.
Please note: the official release notes for APT were sent 
to "apt-users" and "apt-interested" distribution lists. If 
you have subscribed to the rps2-users list in the past we 
would suggest signing up for apt-users. (You can do this 
from: http://www.stsci.edu/cgi-bin/jDomo.tcl)
Training videos, manuals, and other information regarding 
APT are available at http://www.stsci.edu/hst/proposing/apt

WFPC2 Header Astrometry and UCHCOORD

-J. C. Hsu

The UCHCOORD task was initially provided to the community to 
correct WFPC2 astrometry due to a number of aperture parameter 
updates that took place during the early years of WFPC2 
operation. Since the implementation of On-The-Fly-Reprocessing 
(OTFR) in May 2001, all WFPC2 data retrieved from the archive, 
regardless of its observation date, has had these corrections
applied automatically before being delivered, thus we have 
discouraged running the UCHCOORD task on OTFR data since it 
is no longer needed (as described in WFPC2 STAN 45, March 2001 
by Baggett, Hsu & Gonzaga). It was expected that modifications 
to the UCHCOORD task enabled it to discriminate between old 
and new OTFR data, such that it would not perform astrometric 
corrections on any OTFR data, if it were inadvertently run 
(for example, Section 4.3.3 in WFPC2 Data Handbook, Version 
4.0, 2002, S. Baggett et al.).

However, it has recently become apparent that the UCHCOORD 
task may still modify the astrometric information in image 
headers even when the data are retrieved via OTFR, since the 
keyword expected by UCHCOORD ("PROCDATE") does not match the 
keyword provided by OTFR ("PROCTIME"). We thus caution 
observers that it is likely that the UCHCOORD task has always 
incorrectly modified astrometric information in images 
retrieved via OTFR if it were run on such data.

Now that this issue has been identified, we have implemented 
the correction to it in the UCHCOORD task, and this corrected 
version will be available in the next official version of 
STSDAS, scheduled for September. We remind users that it is 
no longer necessary to run the UCHCOORD task on any WFPC2 
data that is retrieved via OTFR, and we recommend that any 
old WFPC2 data should rather be re-retrieved via OTFR since 
many other calibrations are also improved. However, the new 
version of UCHCOORD will now correctly check whether or not 
the images have been processed through OTFR in case it is 
inadvertently run on such data, and will no longer modify 
the header astrometric keywords in such cases.

WFPC2 Cycle 12 Calibration Planning

-Anton Koekemoer

The WFPC2 Cycle 12 Calibration Plan is currently being 
finalized. It contains two principal components: 
continuation of long-term monitoring, and special Close-Out 
programs. The long-term monitoring programs include the 
regular decontaminations, filter throughput checks, darks, 
biases, internal flatfields, Earthflats, and CTE monitoring. 
Some of these are scaled back compared to previous cycles, 
to account for the reduced WFPC2 usage during Cycle 12. Our 
special Close-Out Calibration programs incorporate feedback 
that we have received from the community, and include UV 
astrometric characterization, narrow-band/LRF central 
wavelength checks, and photometric cross-calibration aimed 
at improving the direct tie-in between the WFPC2 filter set 
and other photometric systems, most notably those of ACS, 
WFC3 and SDSS. We encourage any interested members of the 
community to contact us with further suggestions for WFPC2 
Close-Out calibration that could be performed either in this 
Cycle or the next Cycle. We remind the community that Cycle 
13 will likely be the last Cycle for WFPC2 observations before 
it is replaced with WFC3, thus we welcome any suggestions from 
the community on calibration observations that may be carried 
out to improve the overall scientific value of the rich
archival legacy left by the past decade of WFPC2 operations.

Toward a Multi-Wavelength Geometric Distortion Solution for WFPC2

-V. Kozhurina-Platais, J. Anderson, A. M. Koekemoer

The goal of an astrometric calibration of HST WFPC2 is to 
obtain a coordinate system free of distortion at the level 
of precision of 1 mas. So far such calibration has been done 
only for the wide bandpass F555W filter. The inner calibration
field of w Cen exposed through filters F300W, F555W and 
F814W has been used to examine the geometric distortion of
WFPC2 as a function of wavelength. The improved PSF-fitting 
technique by Anderson and King has been used to obtain the
working sets of x,y coordinates for stars in assorted HST 
WFPC2 frames with the globular cluster w Cen in these three
band-passes. We used a bicubic polynomial model to derive 
geometric distortions in the F300W and F814W filters relative
to the distortion-free coordinates in the F555W filter. For 
each filter, four sets of distortion corrections, corresponding 
to each of the four WFPC2 chips, have been optimized 
independently. The main conclusion of this study is that the 
difference in the amount of distortion in the F300W filter is 
about 3% higher than in the F555W but in the F814W filter it 
is about 1% smaller than in the F555W. Tables with distortion 
coefficients are also presented.

+----------------------------------------------------------+
| Recent WFPC2-related Papers/Preprints
+----------------------------------------------------------+

We draw your attention to these papers, based on WF/PC and 
WFPC2 data, that have appeared since the last STAN, or will 
appear in the next few months. This list includes all 
preprints received by the STScI Library not yet published 
in the journals. Please remember to include our Library in 
your preprint distribution list.

ALDCROFT, T.L.; GREEN, P.J. "Lens or Binary? Chandra 
Observations of the Wide-Separation Broad Absorption Line 
Quasar Pair UM 425" ApJ 592: 710-720, 2003

ALONSO-HERRERO, A.; QUILLEN, A.C.; RIEKE, G.H.; IVANOV, V.D.; 
EFSTATHIOU, A. "Spectral Energy Distributions of Seyfert 
Nuclei" AJ 126: 81-100, 2003

ANDERSON, J.; KING, I.R. "The Rotation of the Globular Cluster 
47 Tucanae in the Plane of the Sky" AJ 126: 772-777, 2003

ARRIBAS, S.; COLINA, L. "Integral Spectroscopy of IRAS 
17208-0014: Implications for the Evolutionary Scenarios of 
Ultraluminous Infrared Galaxies" ApJ 591: 791-800, 2003

BAINS, I.; BRYCE, M.; MELLEMA, G.; REDMAN, M.P.; THOMASSON, 
P. "High-Resolution Radio Structure and Optical Kinematics 
of NGC 7027" MNRAS 340: 381-397, 2003

BEDIN, L.R.; PIOTTO, G.; KING, I.R.; ANDERSON, J. "Hubble 
Space Telescope Astrometry of M4 and the Galactic Constant 
V0/R0" AJ 126: 247-254, 2003

BELLAZZINI, M.; CACCIARI, C.; FEDERICI, L.; FUSI PECCI, F.; 
RICH, M. "The Andromeda Project. I. Deep HST-WFPC2 V, I 
Photometry of 16 Fields Toward the Disk and the Halo of 
the M 31 Galaxy. Probing the Stellar Content and Metallicity 
Distribution." A&A 405: 867-901, 2003

BENETTI, S.; CAPPELLARO, E.; RAGAZZONI, R.; SABBADIN, F.; 
TURATTO, M. "The 3-D Ionization Structure of NGC 6818: 
a Planetary Nebula Threatened by Recombination" A&A 400: 
161-183, 2003

BROCATO, E.; CASTELLANI, V.; DI CARLO, E.; RAIMONDO, G.; 
WALKER, A.R. "The Luminosity Function of the Large Magellanic 
Cloud Globular Cluster NGC 1866" AJ 125: 3111-3121, 2003

BRUHWEILER, F.C.; MISKEY, C.L.; SMITH NEUBIG, M. "STIS 
Spectral Imagery of the OB Stars in NGC 604. II. The Most 
Luminous Stars" AJ 125: 3082-3096, 2003

BUTLER, D.J. "The RR Lyrae Star Period - K-Band Luminosity 
Relation of the Globular Cluster M 3" A&A 405: 981-990, 2003

CONSELICE, C. "The Relationship between Stellar Light 
Distributions of Galaxies and Their Formation Histories" 
ApJS 147: 1-28, 2003

DE GRIJS, R.; FRITZE-V. ALVENSLEBEN, U.; ANDERS, P.; 
GALLAGHER, J.S. III; BASTIAN, N.; TAYLOR, V.A.; WINDHORST, 
R.A. "Star Cluster Formation and Evolution in Nearby 
Starburst Galaxies -- I. Systematic Uncertainties" 
MNRAS 342: 259-273, 2003

DICKINSON, M.; PAPOVICH, C.; FERGUSON, H.C.; BUDAVARI, T. 
"The Evolution of the Global Stellar Mass Density at 
0 < z < 3" ApJ 587: 25-40, 2003

DOLPHIN, A.E.; SAHA, A.; SKILLMAN, E.D.; DOHM-PALMER, R.C.; 
TOLSTOY, E.; COLE, A.A.; GALLAGHER, J.S.; HOESSEL, J.G.; 
MATEO, M. "Deep Hubble Space Telescope Imaging of Sextans 
A. III. The Star Formation History" AJ 126: 187-196, 2003

DRUKIER, G.A.; BAILYN, C.D.; VAN ALTENA, W.F.; GIRARD, T.M. 
"Central Proper-Motion Kinematics of NGC 6752" AJ 125: 
2559-2567, 2003

DUNLOP, J.S.; MCLURE, R.J.; KUKULA, M.J.; BAUM, S.A.; 
O'DEA, C.P.; HUGHES, D.H. "Quasars, Their Host Galaxies 
and Their Central Black Holes" MNRAS 340: 1095-1135, 2003

ELLISON, S.L.; MALLEN-ORNELAS, G.; SAWICKI, M. "The 
Absorption and Emission Kinematics in the z = 0.7450 Mg II 
Absorber toward Q1331+17" ApJ 589: 709-721, 2003

ELMEGREEN, B.G.; ELMEGREEN, D.M.; LEITNER, S.N. "A Turbulent 
Origin for Flocculent Spiral Structure in Galaxies" 
ApJ 590: 271-283, 2003

ERB, D.K.; SHAPLEY, A.E.; STEIDEL, C.C.; PETTINI, M.; 
ADELBERGR, K.L.; HUNT, M.P.; MOORWOOD, A.F.M.; CUBY, J.-G. 
"H alpha Spectroscopy of Galaxies at z > 2: Kinematics and 
Star Formation" ApJ 591: 101-118, 2003

ERWIN, P.; SPARKE, L.S. "An Imaging Survey of Early-Type 
Barred Galaxies" ApJS 146: 299-352, 2003

EXTER, K.M.; POLLACCO, D.L.; BELL, S.A. "The Planetary 
Nebula K 1-2 and Its Binary Central Star VW Pyx" 
MNRAS 341: 1349-1359, 2003

FABIAN, A.C.; SANDERS, J.S.; CRAWFORD, C.S.; ETTORI, S. 
"A Deep Chandra Observation of the Cluster Environment of 
the z = 1.786 Radio Galaxy 3C 294" MNRAS 341: 729-738, 2003

FALCON-BARROSO, J.; BALCELLS, M.; PELETIER, R.F.; VAZDEKIS, 
A. "Minor Axis Kinematics of 19 S0-Sbc Bulges" 
A&A 405: 445-471, 2003

FALOMO, R.; CARANGELO, N.; TREVES, A. "Host Galaxies and 
Black Hole Masses of Low- and High-Luminosity Radio-Loud 
Active Nuclei" MNRAS 343: 505-511, 2003

FERNANDEZ-SOTO, A.; LANZETTA, K.M.; CHEN, H.-W. "Mission: 
Impossible (Escape from the Lyman Limit)" 
MNRAS 342: 1215-1221, 2003

FERRARO, F.R.; SILLS, A.; ROOD, R.T.; PALTRINIERI, B.; 
BUONANNO, R. "Blue Straggler Stars: a Direct Comparison of 
Star Counts and Population Ratios in Six Galactic Globular 
Clusters" ApJ 588: 464-477, 2003

FILIPPENKO, A.V.; HO, L.C. "A Low-Mass Central Black Hole 
in the Bulgeless Seyfert 1 Galaxy NGC 4395" 
ApJ 588: L13-L16, 2003

FRANCESCHINI, A.; BERTA, S.; RIGOPOULOU, D.; AUSSEL, H.; 
CESARSKY, C.J.; ELBAZ, D.; GENZEL, R.; MOY, E.; OLIVER, S.; 
ROWAN-ROBINSON, M.; VAN DER WERF, P.P. "Infrared 
Spectroscopy of Faint 15 micron Sources in the Hubble Deep 
Field South: First Hints at the Properties of the Sources 
of the IR Background" A&A 403: 501-522, 2003

GALAMA, T.J.; REICHART, D.; BROWN, T.M.; KIMBLE, R.A.; 
PRICE, P.A.; BERGER, E.; FRAIL, D.A.; KULKARNI, S.R.; YOST, 
S.A.; GAL-YAM, A.; BLOOM, J.S.; HARRISON, F.A.; SARI, R.; 
FOX, D.; DJORGOVSKI, S.G. "Hubble Space Telescope and 
Ground-Based Optical and Ultraviolet Observations of GRB 
010222" ApJ 587: 135-142, 2003

GAVAZZI, R.; FORT, B.; MELLIER, Y.; PELLO, R.; DANTEL-FORT, 
M. "A Radial Mass Profile Analysis of the Lensing Cluster 
MS 2137.3-2353" A&A 403: 11-27, 2003

GIZIS, J.E.; REID, I.N.; KNAPP, G.R.; LIEBERT, J.; KIRKPATRICK, 
J.D.; KOERNER, D.W.; BURGASSER, A.J. "Hubble Space Telescope 
Observations of Binary Very Low Mass Stars and Brown Dwarfs" 
AJ 125: 3302-3310, 2003

GOUDFROOIJ, P.; STRADER, J.; BRENNEMAN, L.; KISSLER-PATIG,
M.; MINNITI, D.; HUIZINGA, J.E. "Hubble Space Telescope 
Observations of Globular Cluster Systems along the Hubble 
Sequence of Spiral Galaxies" MNRAS 343: 665-678, 2003

GRAHAM, A.W.; GUZMAN, R. "HST Photometry of Dwarf Elliptical 
Galaxies in Coma, and an Explanation for the Alleged 
Structural Dichotomy Between Dwarf and Bright Elliptical 
Galaxies" AJ 125: 2936-2950, 2003

GRAHAM, M.F.; MEABURN, J.; REDMAN, M.P. "The Orion Nebula 
(M42) Herbig-Haro Object, HH 201, within the Tip of a 
Molecular Finger" MNRAS 343: 419-426, 2003

HEMPEL, M.; HILKER, M.; KISSLER-PATIG, M.; PUZIA, T.H.; 
MINNITI, D.; GOUDFROOIJ, P. "Extragalactic Globular Clusters 
in the Near Infrared. III. NGC 5846 and NGC 7192" 
A&A 405: 487-497, 2003

HUNT, L.K.; THUAN, T.X.; IZOTOV, Y.I. "New Light on the 
Stellar Populations in I Zw 18: Deep Near-Infrared Imaging" 
ApJ 588: 281-298, 2003

JOHNSON, K.E.; INDEBETOUW, R.; PISANO, D.J. "Searching for 
Embedded Super-Star Clusters in IC 4662, NGC 1705, and NGC 
5398" AJ 126: 101-112, 2003

KALUZNY, J.; THOMPSON, I.B. "Time Series Photometry of 
Variable Stars in the Globular Cluster NGC 6397" 
AJ 125: 2534-2542, 2003

KARACHENTSEV, I.D.; GREBEL, E.K.; SHARINA, M.E.; DOLPHIN, 
A.E.; GEISLER, D.; GUHATHAKURTA, P.; HODGE, P.W.; 
KARACHENTSEVA, V.E.; SARAJEDINI, A.; SEITZER, P. "Distances 
to Nearby Galaxies in Sculptor" A&A 404: 93-111, 2003

KUNDU, A.; MACCARONE, T.J.; ZEPF, S.E.; PUZIA, T.H. "Some 
Constraints on the Effects of Age and Metallicity on the 
Low-Mass X-ray Binary Formation Rate" ApJ 589: L81-L84, 2003

LABBE, I.; RUDNICK, G.; FRANX, M.; DADDI, E.; VAN DOKKUM, 
P.G.; FORSTER SCHREIBER, N.M.; KUIJKEN, K.; MOORWOOD, A.; 
RIX, H.-W.; ROTTGERING, H.; TRUJILLO, I.; VAN DER WEL, A.;
VAN DER WERF, P.; VAN STARKENBURG, L. "Large Disklike 
Galaxies at High Redshift" ApJ 591: L95-L98, 2003

LEE, K.H.; LEE, H.M.; FAHLMAN, G.G.; LEE, M.G. "Wide-Field 
CCD Photometry of the Globular Cluster M92" 
AJ 126: 815-825, 2003

LURIDIANA, V.; PEREZ, E.; CERVINO, M. "Physical Conditions 
in the O++ Zone from ISO and HST Data: NGC 6543 Revisited" 
AJ 125: 3196-3207, 2003

MARBLE, A.R.; HINES, D.C.; SCHMIDT, G.D.; SMITH, P.S.; 
SURACE, J.A.; ARMUS, L.; CUTRI, R.M.; NELSON, B.O. "A Hubble 
Space Telescope WFPC2 Snapshot Survey of 2MASS-Selected Red 
QSOs" ApJ 590: 707-729, 2003

MARTINI, P.; REGAN, M.W.; MULCHAEY, J.S.; POGGE, R.W. 
"Circumnuclear Dust in Nearby Active and Inactive Galaxies. 
I. Data" ApJS 146: 353-406, 2003

MARTINI, P.; REGAN, M.W.; MULCHAEY, J.S.; POGGE, R.W. 
"Circumnuclear Dust in Nearby Active and Inactive Galaxies.
 II. Bars, Nuclear Spirals, and the Fueling of Active 
Galactic Nuclei" ApJ 589: 774-782, 2003

MASETTI, N.; PALAZZI, E.; PIAN, E.; SIMONCELLI, A.; HUNT, 
L.K.; MAIORANO, E.; LEVAN, A.; CHRISTENSEN, L.; ROL, E.;
 SAVAGLIO, S.; FALOMO, R.; CASTRO-TIRADO, A.J.; HJORTH, J.;
DELSANTI, A.; PANNELLA, M.; MOHAN, V.; PANDEY, S.B.; SAGAR, 
R.; AMATI, L.; BURUD, I.; CASTRO CERON, J.M.; FRONTERA, J.; 
FRUCHTER, A.S.; FYNBO, J.P.U.; GOROSABEL, J.; KAPER, L.;
KLOSE, S.; KOUVELIOTOU, C.; NICASTRO, L.; PEDERSEN, H.; 
RHOADS, J.; SALAMANCA, I.; TANVIR, N.; VREESWIJK, P.M.; 
WIJERS, R.A.M.J.; VAN DEN HEUVEL, E.P.J. "Optical and
Near-Infrared Observations of the GRB020405 Afterglow" 
A&A 404: 465-481, 2003

MISKEY, C.L.; BRUHWEILER, F.C. "STIS Spectral Imagery of 
the OB Stars in NGC 604. I. Description of the Extraction 
Technique for a Crowded Stellar Field" AJ 125: 3071-3081, 2003

MOMANY, Y.; ORTOLANI, S.; HELD, E.V.; BARBUY, B.; BICA, E.; 
RENZINI, A.; BEDIN, L.R.; RICH, R.M.; MARCONI, G. "V, J, H 
and K Imaging of the Metal Rich Globular Cluster NGC 6528. 
Reddening, Metallicity, and Distance Based on Cleaned 
Colour-Magnitude Diagrams" A&A 402: 607-616, 2003

O'DELL, C.R.; DOI, T. "High Proper Motion Features in the 
Central Orion Nebula" AJ 125: 277-287, 2003 [erratum: 
AJ 125: 2753, 2003]

O'DELL, C.R.; PEIMBERT, M.; PEIMBERT, A. "Fine-Scale 
Temperature Fluctuations in the Orion Nebula and the 
t(2) Problem" AJ 125: 2590-2608, 2003

PARMENTIER, G.; DE GRIJS, R.; GILMORE, G. "Chemical Evolution 
of the M82 B Fossil Starburst" MNRAS 342: 208-220, 2003

PRICE, P.A.; KULKARNI, S.R.; BERGER, E.; FOX, D.W.; BLOOM, 
J.S.; DJORGOVSKI, S.G.; FRAIL, D.A.; GALAMA, T.J.; HARRISON, 
F.A.; MCCARTHY, P.; REICHART, D.E.; SARI, R.; YOST, S.A.;
JERJEN, H.; FLINT, K.; PHILLIPS, A.; WARREN, B.E.; AXELROD, 
T.S.; CHEVALIER, R.A.; HOLTZMAN, J.; KIMBLE, R.A.; SCHMIDT, 
B.P.; WHEELER, J.C.; FRONTERA, F.; COSTA, E.; PIRO, L.;
HURLEY, K.; CLINE, T.; GUIDORI, C.; MONTANARI, E.; MAZETS, 
E.; GOLENETSKII, S.; MITROFANOV, I.; ANFIMOV, D.; KOZYREV, 
A.; LITVAK, M.; SANIN, A.; BOYNTON, W.; FELLOWS, C.; 
HARSHMAN, K.; SHINOHARA, C.; GAL-YAM, A.; OFEK, E.; LIPKIN, 
Y. "Discovery of GRB 020405 and Its Late Red Bump" 
ApJ 589: 838-843, 2003

RAGAZZONI, R.; TURATTO, M.; GAESSLER, W. "The Lack of 
Observational Evidence for the Quantum Structure of 
Spacetime at Planck Scales" ApJ 587: L1-L4, 2003

REULAND, M.; VAN BREUGEL, W.; ROTTGERING, H.; DE VRIES, W.; 
STANFORD, S.A.; DEY, A.; LACY, M.; BLAND-HAWTHORN, J.; 
DOPITA, M.; MILEY, G. "Giant Ly alpha Nebulae Associated 
with High-Redshift Radio Galaxies" ApJ 592: 755-766, 2003

RIERA, A.; GARCIA-LARIO, P.; MANCHADO, A.; BOBROWSKY, M.; 
ESTALELLA, R. "The High-Velocity Outflow in the 
Proto-planetary Nebula Hen 3-1475" A&A 401: 1039-1056, 2003

RUSIN, D.; KOCHANEK, C.S.; FALCO, E.E.; KEETON, C.R.; 
MCLEOD, B.A.; IMPEY, C.D.; LEHAR, J.; MUNOZ, J.A.; PENG, 
C.Y.; RIX, H.-W. "The Evolution of a Mass-Selected Sample 
of Early-Type Field Galaxies" ApJ 587: 143-159, 2003

SALARIS, M.; PERCIVAL, S.; BROCATO, E.; RAIMONDO, G.; 
WALKER, A.R. "The Distance to the Large Magellanic Cloud 
Cluster NGC 1866 and the Surrounding Field" 
ApJ 588: 801-804, 2003

SANCHEZ-LAVEGA, A.; PEREZ-HOYOS, S.; ROJAS, J.F.; HUESO, 
R.; FRENCH, R.G. "A Strong Decrease in Saturn's Equatorial 
Jet at Cloud Level" Nature 423: 623-625, 2003

SCHINNERER, E.; BOKER, T.; MEIER, D.S. "Molecular Gas 
and the Nuclear Star Cluster in IC 342: Sufficient Inflow 
for Recurring Star Formation Events?" ApJ 591: L115-L118, 2003

SHUPING, R.Y.; BALLY, J.; MORRIS, M.; THROOP, H. "Evidence 
for Grain Growth in the Protostellar Disks of Orion" 
ApJ 587: L109-L112, 2003

SIGURDSSON, S.; RICHER, H.B.; HANSEN, B.M.; STAIRS, I.H.; 
THORSETT, S.E. "A Young White Dwarf Companion to Pulsar 
B1620-26: Evidence for Early Planet Formation" 
Science 301: 193-196, 2003

SMITH, G.P.; EDGE, A.C.; EKE, V.R.; NICHOL, R.C.; SMAIL, I.; 
KNEIB, J.-P. "Measuring sigma(8) with Cluster Lensing: 
Biases from Unrelaxed Clusters" ApJ 590: L79-L82, 2003

SROMOVSKY, L.A.; FRY, P.M.; LIMAYE, S.S.; BAINES, K.H. 
"The Nature of Neptune's Increasing Brightness: Evidence 
for a Seasonal Response" Icarus 163: 256-261, 2003

STAPELFELDT, K.R.; MENARD, F.; WATSON, A.M.; KRIST, J.E.; 
DOUGADOS, C.; PADGETT, D.L.; BRANDNER, W. "Hubble Space 
Telescope WFPC2 Imaging of the Disk and Jets of HV Tauri C" 
ApJ 589: 410-418, 2003

STORRIE-LOMBARDI, L.J.; WEYMANN, R.J.; THOMPSON, R.I. 
"High-Redshift Candidates and the Nature of Small Galaxies 
in the Hubble Deep Field" ApJ 591: 623-639, 2003

STRUCK, C.; SMITH, B.J. "Models of the Morphology, 
Kinematics, and Star Formation History of the Prototypical 
Collisional Starburst System NGC 7714/7715 = Arp 284" 
ApJ 589: 157-178, 2003

SULLIVAN, M.; ELLIS, R.S.; ALDERING, G.; AMANULLAH, R.; 
ASTIER, P.; BLANC, G.; BURNS, M.S.; CONLEY, A.; DEUSTUA, 
S.E.; DOI, M.; FABBRO, S.; FOLATELLI, G.; FRUCHTER, A.S.; 
GARAVINI, G.; GIBBONS, R.; GOLDHABER, G.; GOOBAR, A.; 
GROOM, D.E.; HARDIN, D.; HOOK, I.; HOWELL, D.A.; IRWIN, M.; 
KIM, A.G.; KNOP, R.A.; LIDMAN, C.; MCMAHON, R.; MENDEZ, J.; 
NOBILI, S.; NUGENT, P.E.; PAIN, R.; PANAGIA, N.; PENNYPACKER, 
C.R.; PERLMUTTER, S.; QUIMBY, R.; RAUX, J.; REGNAULT, N.; 
RUIZ-LAPUENTE, P.; SCHAEFER, B.; SCHAHMANECHE, K.; SPADAFORA, 
A.L.; WALTON, N.A.; WANG, L.; WOOD-VASEY, W.M.; YASUDA, N. 
"The Hubble Diagram of Type Ia Supernovae as a Function of 
Host Galaxy Morphology" MNRAS 340: 1057-1075, 2003

THOMASSON, P.; SAIKIA, D.J.; MUXLOW, T.W.B. "3C 459: a 
Highly Asymmetric Radio Galaxy with a Starburst" 
MNRAS 341: 91-99, 2003

TIKHONOV, N.A.; GALAZUTDINOVA, O.A.; APARICIO, A. "Stellar 
Content of NGC 404 - The Nearest S0 Galaxy" 
A&A 401: 863-872, 2003

TRAN, K.-V.H.; SIMARD, L.; ILLINGWORTH, G.; FRANX, M. 
"Cl 1358+62: Characterizing the Physical Properties of 
Cluster Galaxies at z = 0.33" ApJ 590: 238-255, 2003

TREU, T.; ELLIS, R.S.; KNEIB, J.-P.; DRESSLER, A.; SMAIL, I.; 
CZOSKE, O.; OEMLER, A.; NATARAJAN, P. "A Wide-Field Hubble 
Space Telescope Study of the Cluster Cl 0024+16 at z = 0.4. 
I. Morphological Distributions to 5 Mpc Radius" 
ApJ 591: 53-78, 2003

TRUSSONI, E.; CAPETTI, A.; CELOTTI, A.; CHIABERGE, M.; 
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