CURRICULUM VITAE
TOBIAS J KREIDL
EDUCATION
Ph D University of Vienna Austria astronomy
CURRENT POSITION
System Programmer Principal Team LEad Northern Arizona University
Systems Analyst Principal Northern Arizona University
Systems Analyst Senior Northern Arizona University
Systems Analyst Northern Arizona University
Adjunct Faculty Northern Arizona University
PREVIOUS EXPERIENCE
Research Assistant Ruhr University Bo chum Germany
Astronomer Lowell Observatory
Computer Systems Manager Lowell Observatory
Computer Systems Manager Research Scientist
Planetary Science Institute
CONSULTANTSHIPS
February March Space Telescop e Science Institute
Hubble Space Telescop e WF PC Imaging Team
February Planetary Science Institute
April Go ddard Space Flight Center NASA RSD Program committee
PROFESSIONAL SOCIETIES
American Astronomical So ciety
Division for Planetary Sciences
International Astronomical Union
DECUS USENIX
PUBLICATIONS TOBIAS J KREIDL
P L Fischer P Jackson and T J Kreidl Photographische Positionen der Kometen
Kohoutek f und Brad eld b Geowissenschaftliche Mitteilungen
P L Fischer P Jackson and T J Kreidl Photographische Positionen des
Kometen Kobayashi Berger Milon h Anzeiger der math naturw Klasse der
osterreichischen Akademie der Wissenschaften See also IAU Circular
No
T J Kreidl Eine erweiterte Reduktionsmetho de zur Auswertung von Messungen an
engen visuellen Dopp elsternen Ph D Thesis University of Vienna Austria
K Rakos R Albrecht H Jenkner T Kreidl R Michalke D Ob erlerchner E Santos
A Schnell and W Weiss Photometric and Astrometric Observations of Close Visual
Binaries In Modern Astrometry IAU Col loquium No F V Pro chazka and R
H Tucker eds pp
W W Weiss and T J Kreidl editors Ap Stars in the Infrared Workshop October
Institute for Astronomy Vienna Austria
T Kreidl M Buchholz and Ch Winkler Image Pro cessing at the Astronomical Insti
tute of the Ruhr Universit at Bo chum ESO Messenger
W W Weiss and T J Kreidl Photometry of Przybylski s Star A Comparison of
Perio d Determination Metho ds Astron Astrophys
T Kreidl J Kozok and M Buchholz The Image Pro cessing System at the Astronomical
Institute of the Ruhr Universit at Bo chum Image Processing Circular No R
Albrecht and M Capaccioli eds
W A Baum T Kreidl J A Westphal G E Danielson P K Seidelmann D Pascu
and D G Currie Pro le of Saturn s E Ring abstract Bul l Amer Astron Soc
T J Kreidl A Program to Determine Perio dicities in Data Sets Deeming s Metho d
Image Processing Circular No R Albrecht and M Capaccioli eds
W A Baum and T J Kreidl How to Make Planetary Rings abstract Bul l Amer
Astron Soc
B Vaucher N Thomas T J Kreidl and A Hoag Quantitative Measures of Slitless
Sp ectra of QSOs abstract Bul l Amer Astron Soc
W A Baum B Thomsen and T J Kreidl Subtleties in the Flat Fielding of Charge
Coupled Device CCD Images SPIE Vol Solid State Imagers for Astronomy
pp
W A Baum T Kreidl J A Westphal G E Danielson P K Seidelmann D Pascu
and D G Currie Saturn s E Ring I CCD Observations of March Icarus
W A Baum and T J Kreidl Thickness of Saturn s A and B Rings abstract Bul l
Amer Astron Soc
N M White and T J Kreidl Occultation Angular Diameters of Tauri by Least
Squares and Deconvolution abstract Bul l Amer Astron Soc
N M White T J Kreidl L Goldb erg An Occultation Angular Diameter in H alpha
Light Astrophys J
W A Baum and T J Kreidl Detection of a Cloud Surrounding Saturn s A and B
Rings abstract Bul l Amer Astron Soc
J A Tyson W A Baum and T Kreidl Deep CCD Images of C Astrophys
J Lett L L
W A Baum and T J Kreidl Apparent Thickness of the A and B Rings abstract
In Saturn Conference Abstracts p Lunar and Planetary Lab oratory University
of Arizona Tucson
B G Vaucher T J Kreidl N G Thomas and A A Hoag Quantitative Measures
of Slitless Sp ectra of QSOs Astrophys J
T J Kreidl Image Pro cessing Applied to CCD Images of Saturn s Rings abstract
Bul l Amer Astron Soc
W A Baum and T J Kreidl Implications of the Three Dimensional Distribution of
Material in Saturn s E Ring abstract Bul l Amer Astron Soc
K Lumme W A Baum and T J Kreidl Transmitted Light through Low Density
Areas in Saturn s Rings as a Mo del to Explain the Edge on Observations
abstract Bul l Amer Astron Soc
T J Kreidl Astrometric and Photometric Area Scanner Measurements of Double
Stars In Current Techniques in Double and Multiple Star Research IAU Col loquium
No R S Harrington and O G Franz eds Lowel l Observatory Bul letin No
pp
T J Kreidl A Variable Length Directory Structure for a Large Single File Image
Disk Astronomical Image Processing Circular No R Albrecht and M Capaccioli
eds
W A Baum and T J Kreidl CCD Observations of Globular Clusters in M
abstract Bul l Amer Astron Soc
W A Baum R L Millis and T J Kreidl Narrowband CCD Imaging Observations
of Comets abstract Bul l Amer Astron Soc
L J Martin W A Baum L H Wasserman and T J Kreidl Clouds Ab ove the
Martian Limb abstract Bul l Amer Astron Soc
T J Kreidl On the Sct like Variability of the Ap Star HD Inf Bul l Var
Stars No
h
T J Kreidl Lack of Detection of a Perio dicity in the CP Star HD Inf
Bul l Var Stars No
K D Rakos R Albrecht H Jenkner T Kreidl R Michalke D Ob erlerchner E
Santos A Schermann A Schnell and W Weiss Photometric and Astrometric Ob
servations of Close Visual Binaries Erratum Astron Astrophys Suppl Series
N M White and T J Kreidl Occultation Diameters of Alpha Tauri Astron J
W A Baum T J Kreidl and L H Wasserman Saturn s E Ring In Planetary
Rings IAU Col loquium No A Brahic ed pp Cepadues Editions
Toulouse
W A Baum and T J Kreidl Sublimation Rates of Grains in Cometary Comae
abstract Bul l Amer Astron Soc
T J Kreidl A Further Search for the Sct like Variability of the Ap Star HD
Inf Bul l Var Stars No
T J Kreidl A Search for Low Harmonic Pulsation in the Ap Star HD Inf
Bul l Var Stars No
T J Kreidl A Search for Low Harmonic Pulsation in the Ap Star CS Vir Mon
Not Roy Astron Soc
A P Odell and T J Kreidl Sp ectral Line Pro les Calculated in the Oblique Pulsator
Mo del of Ap Stars In Proceedings Theoretical Problems in Stel lar Stability and
Oscil lations th Li ege Astrophysical Col loquium pp Universit e de Li ege
Li ege
D W Kurtz and T J Kreidl A Frequency Analysis of a Newly Discovered Rapidly
Oscillating Ap Star HD Mon Not Roy Astron Soc
T J Kreidl The Ap Star Cam another Com Mon Not Roy Astron Soc
T J Kreidl Di erential Photometry of the Sct Stars HR and HR Mon
Not Roy Astron Soc
E S Bus B L Lutz and T J Kreidl Sp ectral Analysis of Comet P Halley using
Observations abstract Publ Astron Soc Paci c
R Millis L Wasserman O Franz R Nye R Oliver S Jones T Kreidl M A Hearn
R Schnurr and W Osb orn Observations of the Occultation of BD deg by
Ceres abstract Publ Astron Soc Paci c
T J Kreidl The Discovery of Rapid Oscillations on the Ap Star HD Inf
Bul l Var Stars No
E Bus T Kreidl U Carsenty S Wycko and B Lutz Digitization of Ob jective
Prism Sp ectra of Comet P Halley abstract Bul l Amer Astron Soc
W A Baum and T J Kreidl Volatiles in Cometary Grains In Asteroids Comets
Meteors II C I Lagerkvist B A Lindblad H Lundstedt and H Rickman eds
pp Uppsala Univ Sweden
T J Kreidl and D W Kurtz Frequency Analysis of the min oscillations in the
rapidly oscillating Ap star HD Mon Not Roy Astron Soc
W A Baum T J Kreidl and D G Schleicher Ices in Cometary Grains abstract
Bul l Amer Astron Soc
D G Schleicher W A Baum and T J Kreidl The Spatial Distribution of Cometary
C Using CCD Imaging Data abstract Bul l Amer Astron Soc
T J Kreidl Are There Any True Sct Ap Stars In Stel lar Pulsation A Memorial
to John P Cox Lecture Notes in Physics A N Cox W M Sparks S G
Starr eld eds Springer Verlag New York pp
R L Millis L H Wasserman O G Franz R A Nye R C Oliver T J Kreidl
S E Jones W Hubbard L Leb ofsky R Go R Marcialis M Sykes J Frecker D
Hunten B Zellner H Reitsema G Schneider E Dunham J Klavetter K Meech
T Oswalt J Rafert E Strother J Smith H Povenmire B Jones D Kornbluh L
Reed K Izor M F A Hearn R Schnurr W Osb orn D Parker W T Douglas J
D Beish A R Klemola M Rios A Sanchez J Piironen M Money R S Ireland
and D Leib ow The Size Shap e Density and Alb edo of Ceres from Its Occultation
of BD deg Icarus pp
H Schneider W W Weiss T J Kreidl and A P Odell Searches for Rapid Line
Pro le Variations of Two Pulsating CP Stars HD and HD In Stel lar
Pulsation A Memorial to John P Cox Lecture Notes in Physics A N Cox
W M Sparks S G Starr eld eds Springer Verlag New York pp
W A Baum T J Kreidl and D G Schleicher Assaying Cometary Grains
abstract Bul l Amer Astron Soc
T J Kreidl A Search for Rapidly Oscillating Ap Stars in the Northern Hemisphere
In Proceedings Advances in Helio and Asteroseismology I A U Symposium No
J Christensen Dalsgaard and S Frandsen eds pp
J A Matthews T J Kreidl and W H Wehlau A Search for Rapidly Oscillating
Ap Stars I The Ap rich Op en Cluster NGC I I Evidence for Oscillations in the
Field Star HD Publ Astr Soc Paci c pp
S B Howell K O Mason G A Reichert A Warno ck and T J Kreidl US a
h m
th mag eclipsing cataclysmic variable with a p erio d of Mon Not Roy
Astron Soc
W A Baum and T J Kreidl What Cassini Will Fly Through abstract Bul l
Amer Astron Soc
S B Howell and T J Kreidl RW Ursae Minoris I A U Circular No Nov
S B Howell P Szko dy T J Kreidl and K O Mason A CCD Photometric Study
of Faint and or Short Perio d Cataclysmic Variables abstract Bul l Amer Astron
Soc
T J Kreidl and H Schneider The rotation p erio d of the Ap star HD Psc
Inf Bul l Var Stars No
H B Hammel N L Lark M Rigler and T J Kreidl Disk Integrated Photometry
of Neptune at Methane Band and Continuum Wavelengths Icarus pp
R M Wagner T J Kreidl S B Howell G W Collins S Starr eld V Cygni
I A U Circular No June
P Szko dy S B Howell M Mateo T J Kreidl CCD Time Resolved Photometry of
Faint Cataclysmic Variables I I Publ Astron Soc Paci c
W W Weiss R Kuschnig T J Kreidl J Zverko K Panov A Hemp elmann N Polo
sukchina Asteroseismology with the Pulsating Binary system ET And I Photometry
of ET And abstract Astronomische Gesellschaft Abstract Series
D W Kurtz J M Matthews P Martinez J Seeman M Cropp er J C Clemens
T J Kreidl C Sterken H Schneider W W Weiss S D Kawaler S O Kepler A
van der Peet D J Sullivan H J Wo o d The high overtone p mo de sp ectrum of the
rapidly oscillating Ap star HR HD results of a frequency analysis of
hr of multi site photometric observations obtained during a day time span in
Mon Not Roy Astron Soc
R M Wagner T J Kreidl S J Bus W Williams Near Infrared CCD Photometry
of Cygnus X Astrophys J
W A Baum and T J Kreidl Comet to comet di erences in coma grain prop erties
abstract In Asteroids Comets Meteors III Abstracts C I Lagerkvist P Magnus
son and H Rickman eds Uppsala Astron Obs Rep No Uppsala Univ
Sweden
D A Hunter H C Harris W A Baum J H Jones T J Kreidl Ground based
Photometric Calibration of the Space Telescop e CCD Camera in Highlights of As
tronomy Vol pp
R M Wagner S G Starr eld T J Kreidl S B Howell A Cassatella G W Collins
R H Kaitchuk R Bertram R Fried Optical Observations of the X ray Nova V
Cygni in Accretion Powered Compact Binaries Proc of the th North American
Workshop on Cataclysmic Variables and Low Mass X ray Binaries ed C W Mauche
Cambridge Univ Press London Cambridge
R M Wagner T J Kreidl P J Martell J Beaver Identi cation of a Red Optical
Counterpart of Cygnus X in CCDs in Astronomy G H Jacoby ed Astron Soc
of the Paci c Conference Series Vol
D G Schleicher D J Osip T J Kreidl L M Sauter Comet Levy I A U Circular
No June
K D Rakos W W Weiss S Muller R Pressb erger P Wachtler J M Schomb ert T J
Kreidl VULCAN A Low resolution Sp ectrophotometer for Measuring the Integrated
Colors of Galaxies Publ Astr Soc Paci c
T J Kreidl R Garrido L Huang Z Guo J A Belmonte J D Fernie J Zverko
J Zi zno vsky W W Weiss I Elliott J M Matthews Variability of the Ap star
Com results from multiple site campaigns Mon Not Roy Astron Soc
S B Howell P Szko dy T J Kreidl K O Mason E M Puchnarewicz CCD Time
Resolved Photometry of Faint Cataclysmic Variables I I I Publ Astron Soc Paci c
T J Kreidl M J Nelson A Northern Sky Survey of Ap Stars for Rapid Variability
abstract Bul l Amer Astron Soc
K D Rakos T J Kreidl J M Schomb ert Narrow band Photometry and the Stellar
Populations in Elliptical Galaxies Ap and Space Sci
T J Kreidl An Indep endent Con rmation of Rapid Oscillations in the Ap Star
HD Inf Bul l Var Stars No
D H Levy S B Howell T J Kreidl B A Ski C W Tombaugh The Historical
Discovery and Recent Con rmation of a New Cataclysmic Variable in Corvus Publ
Astron Soc Paci c
R Kuschnig W W Weiss T J Kreidl S J Bus D J Osip L Huang J P Sareyan
M Alvarez S G Bedolla J Zverko J Zi zno vsky A Hemp elmann K Panov N
Polosukhina A V Mironev A V Kusakin Ch Sterken J A Belmonte J Rogl
Maia Variables Revived and Photometry of ET And Publ Astr
Soc Paci c Conference Series Vol eds C Cacciari and G Clementini p
R M Wagner S Starr eld A Cassatella R Gonzalez Riestra T J Kreidl S B Howell
R M Hjellming S H Han C Shrader G Sonneb orn G W Collins R Bertram
M W Buie H E Bond J Johnson T Harrison R D Gehrz F A Cordova P Szko dy
B Margon J MacDonald R Fried The Outburst of V Cygni A Very
Unusual X ray Nova in Pro c of IAU Collo q The Physics of Classical Novae
T J Kreidl A photometric search for rapid oscillations in the co ol Ap star CrB near
magnetic maximum Mon Not Roy Astron Soc
H C Harris W A Baum D A Hunter T J Kreidl Photometric Calibration of
the HST Wide Field Planetary Camera I Ground Based Observations of Standard
Stars Astron J
S B Howell P Szko dy T J Kreidl D Dobrzycka CCD Time Resolved Photometry
of Faint Cataclysmic Variables IV Publ Astron Soc Paci c
S B Howell T J Kreidl SS Leonis Minoris I A U Circular No Apr
O G Franz L H Wasserman T J Kreidl A Bradley G F Benedict R L Duncomb e
P D Hemenway W Je reys B McArthur J E McCartney E Nelan P J Shelus
D Story A L Whipple L W Fredrick W F van Altena Binary Star Observations
with the Hubble Space Telescop e Fine Guidance Sensors I ADS abstract
Bul l Amer Astron Soc
T J Kreidl D W Kurtz R Kuschnig S J Bus P V Birch M P Candy W
W Weiss A frequency analysis of new observations of the rapidly oscillating Ap
star HD evidence for mo de switching Mon Not Roy Astron Soc
O G Franz T J N Kreidl L H Wasserman A J Bradley G F Benedict P D
Hemenway W H Je reys B McArthur J E McCartney E Nelan P J Shelus D
Story A L Whipple R L Duncomb e L W Fredrick Wm F van Altena Binary
Star Observations with the Hubble Space Telescop e Fine Guidance Sensors I ADS
Astrophys J Lett L L
K D Rakos J M Schomb ert T J Kreidl Narrow Band Photometry and the Evo
lution of Galaxies I I I Stellar Populations in Elliptical Galaxies Astrophys J
R M Wagner S G Starr eld S B Howell T J Kreidl S J Bus A Cassatella R
Bertram R Fried Optical Identi cation of the X ray Source GS as V
Cygni Astrophys J
R G Samec S A Herr J T Zetzl T J Kreidl CCD Light Curves of V Cygni
Inf Bul l Var Stars No
D W Kurtz T J Kreidl D O Donoghue D J Osip P Trip e A frequency analysis
of new observations of the rapidly oscillating Ap star HD Mon Not Roy
Astron Soc
R G Samec S A Herr J T Zetzl T J Kreidl CCD Photometry and Preliminary
Analysis of V Cygni Publ Astron Soc Paci c
H Schneider T J Kreidl W W Weiss A frequency analysis of the rapidly oscillating
CP roAp star HD Astron Astrophys
O G Franz T J Kreidl L H Wasserman A Bradley G F Benedict R L Duncomb e
P D Hemenway W H Je reys B McArthur J E McCartney E Nelan P J
Shelus D Story A L Whipple L W Fredrick Wm F van Altena Binary Star
Observations with the Hubble Space Telescop e Fine Guidance Sensors I I I ADS
revisited abstract Bul l Am Astron Soc
R M Wagner S B Howell T J Kreidl S G Starr eld The Black Hole Binary V
Cygni in Outburst Decline and Quiescence abstract Bul l Am Astron Soc
O G Franz T J Kreidl L H Wasserman A Bradley E Nelan D Story A L Whip
ple Detection and Measurement of Binary Stars with the Hubble Space Telescop e
Fine Guidance Sensors I A U Collo quium A S P Conference Series Comple
mentary Approaches to Double and Multiple Star Research Vol eds H A
McAlister W I Hartkopf p
J A Belmonte T J Kreidl C Mart nez Roger Aquilae revisited rapid photometry
in the IR and visible bands Inf Bul l Var Stars No
R G Samec T J Kreidl Complete CCD V R I Light Curves of BM Ursae Ma joris
Inf Bul l Var Stars No
R M Wagner T J Kreidl S B Howell and S G Starr eld Perio dic Photometric
Variability of the Black Hole Binary V Cygni Astrophys J Lett L
W A Baum T J Kreidl D G Schleicher Cometary Grains Astron J
M J Nelson T J Kreidl New Limits on the Instability Strip of the HRD Observa
tions from a Northern Sky Survey of Ap Stars for Rapid Variability A S P Conf
Series Vol Inside the Stars I A U Col l eds W W Weiss and A Baglin
p
T J Kreidl Chaos in Pulsating Variable Stars Preliminary Analysis of Photo electric
Photometry and Observational Constraints of Detection In Proc I A U Col l No
J Nemec J matthews eds p XXX
M J Nelson T J Kreidl A Seven Year Northern Sky Survey of Ap Stars for Rapid
Variability Astron J
T J Kreidl Time Series Photometry CCDs vs PMTs in Proceedings I A U Col l
No I Elliott C J Butler eds Cambridge University Press Cambridge p
P Martinez D W Kurtz T J Kreidl C Ko en F van Wyk F Marang G Rob erts
A frequency Analysis of the Rapidly Oscillating Ap Star HD and a Determi
nation of its Rotation Perio d Mon Not Roy Astron Soc
W A Baum R M Light J A Holtzman D A Hunter T J Kreidl E J O Neil
Jr E Groth Hubble Space Telescop e Observations of Baade s Window in Galactic
Bulges Proceedings IAU Symposium eds H Habing and H Dejonghe
E W Burke Jr R Fried B Etter T J Kreidl Discovery of the Variations of HD
Inf Bul l Var Stars No
R Monier T J Kreidl The Ultraviolet Variations of the Scuti Stars Tau and
Tau Astron Astrophys
T J Kreidl A Null Detection of Rapid Oscillations in the Ap Star ET And Inf
Bul l Var Stars No
R Kuschnig W Weiss N Piskounov T Ryab chikova T J Kreidl M Alvarez S G
Bedolla S J Bus Z Guo J Hao L Huang F Kupka D Le Contel J M Le Contel
D J Osip K Panov N Polosukchina J P Sareyan H Schneider J C Valtier J
Zi zno vsky J Zverko The Peculiar Binary System HD ET And in Pro
ceedings I A U Symp osium No Pulsation Rotation and Mass Loss in Early Typ e
Stars
R M Wagner S G Starr eld R M Hjellming S B Howell T J Kreidl ROSAT
Observations of the Black Hole Candidate V Cygni in Quiescence Astrophys J
Lett bf L
T J Kreidl D W Kurtz H Schneider F van Wyk G Rob erts F Marang P V
Birch The detection of cyclic frequency variability in the rapidly oscillating Ap star
HD Mon Not Roy Astron Soc
R G Samec J D Gray C J Carrigan T J Kreidl Analysis of CCD Photometry
for the Very Short Perio d Eclipsing Binary BM Ursae Ma joris Publ Astron Soc
Paci c
W A Baum T J Kreidl R M Light E J Groth M Hammergren J A Holtzman
D A Hunter J A Westphal Structure Kinematics and History of the Galactic
Nuclear Bulge p oster pap er Symp osium in honor of Alb ert E Whitford U C
Santa Cruz March
P Martinez W W Weiss M J Nelson T J Kreidl G R Rob erts D E Mkr
tichian N I Dorokhov T N Dorokhova P V Birch The p mo de sp ectrum of Equ
HR Mon Not Roy Astron Soc
D L MacIsaac T Kreidl T Jagatic M de Mendizabal Making the AJP TPT index
available via the web American Association of Physics Teachers Announcer
R M Wagner J R Thorstensen R K Honeycutt S B Howell R H Kaitchuck T J
Kreidl J W Rob ertson E M Sion E M S G Starr eld A Photometric and Sp ec
troscopic Study of the Cataclysmic Variable SX LMi CBS in Quiescence and
Sup eroutburst Astron J
W W Weiss R Kuschnig D E Mkrtichian A V Kusakin T J Kreidl S J Bus
D J Osip Z Guo J Hao L Huang J P Sareyan M Alvarez S G Bedolla J
Zverko J Ziznovsky P Mittermayer K Zwintz N Polosukhina A V Mironov
N I Dorokhov V P Goranskij T N Dorokhova H Schneider and F Hiesb erger
Photometry of ET Andromedae and Pulsation of HD Astron Astrophys
D B Guenther P Demarque D Buzasi J Catanzarite R Laher T Conrow T
Kreidl Evolutionary Mo del and Oscillation Frequencies for Ursae Ma joris A Com
parison with Observations Astrophys J Lett L
D Busazi J Catanzarite R Laher T Conrow D Shup e T N Gautier I I I T
Kreidl D Everett The Detection of Multimo dal Oscillations on Ursae Ma joris
Astrophys J Lett L