Conference Program

Invited Speakers (confirmed in bold-face type)

Javier Alonso-Garcia – Universidad de Antofagasta/Instituto Milenio de Astrofísica, CHILE
Rachael Beaton – Princeton University, USA
Santi Cassisi – INAF – Osservatorio Astronomico di Abruzzo, ITALY
Giuliana Fiorentino – INAF – Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, ITALY
Gergely Hajdu – Centrum Astronomiczne im. Mikołaja Kopernika, Polskiej Akademii Nauk, POLAND
Kelly Hambleton – Villanova University, USA
Monika Jurkovic – Astronomska opservatorija Belgrade, SERBIA
Stella Kafka – American Association of Variable Star Observers, USA
Katrien Kolenberg – Universiteit Antwerpen, BELGIUM
Zoltán Kolláth – Eötvös Loránd Tudományegyetem, Savaria Egyetemi Központ, HUNGARY
Andrea Kunder – Saint Martin’s University, USA
Lucas Macri – Texas A&M University, USA
Tatiana Muraveva – INAF – Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, ITALY
Jill Neeley – Florida Atlantic University, USA
Vincenzo Ripepi – INAF – Osservatorio Astronomico di Capodimonte, ITALY
Victoria Scowcroft – University of Bath, UNITED KINGDOM
Radosław Smolec – Centrum Astronomiczne im. Mikołaja Kopernika, Polskiej Akademii Nauk, POLAND
Igor Soszyński – Obserwatorium Astronomiczne Uniwersytetu Warszawskiego, POLAND


Conference Program

Sunday, October 13:

17:00-20:00 Registration at The Lodge Resort and Spa
18:00-20:00 Opening reception. Hors d’oeuvres and drinks provided.
19:00-20:00 Native American Storytelling at gazebo area at the The Lodge Resort and Spa.  Mr. Alex Mares, Native American Storyteller: Maii Chee, Haashch eshzhini and the Yadilhil Grandfather Coyote, Black Spirit and the Navajo Universe”

Monday, October 14:

08:30-08:45 Conference Opening and Welcome at the Pavilion. Transport provided, if needed from the Lodge to the Pavilion.

SESSION 1: CLASSICAL PULSATORS FROM THE GROUND
Session Chair: Karen Kinemuchi

09:00-09:30 Igor Soszyński (invited) The Milky Way as seen by the OGLE Survey
09:30-09:50 Abdelmajid Benhida A study of the prototype RR Lyr from Oukaimeden observatory in Morocco
09:50-10:10 Xiaodian Chen Cepheids, RR Lyraes and other distance tracers in WISE and ZTF
10:10-10:30 Patryk Iwanek The three-dimensional distributions of type II and anomalous Cepheids in the Magellanic Clouds unravel the origin of these stars.

10:30-11:00 COFFEE BREAK

SESSION 2: CLASSICAL PULSATORS FROM SPACE
Chair: Joyce Guzik

11:00-11:30 Tatiana Muraveva (invited) RR Lyrae stars in the Gaia Era
11:30-11:50 Giulia De Somma Gaia parallaxes versus updated pulsation model predictions
11:50-12:15 Group Photo in front of the Lodge (weather permitting)

12:00-14:00 LUNCH at The Lodge Resort and Spa
13:00-14:00 LUNCH BREAKOUT SESSION: Data Handling/Machine Learning Techniques w/ Nina Hernitschek — Marcia Room in the Lodge

14:00-14:20 Jan Lub RR Lyrae calibrations with GAIA DR2
14:20-14:40 Matteo Monelli Variable stars at the fringes of the Local Group
14:40-15:10 Katrien Kolenberg (invited) Classical Pulsators from Space – calling for ground-based follow-up
15:10-15:30 Róbert Szabó Status report on the Kepler Pixel Project

15:30-16:00 COFFEE BREAK

16:00-16:20 Géza Kovács On the Incidence Rate of Blazhko Stars
16:20-16:40 László Molnár Additional modes and echelle diagrams for RR Lyraes: towards asteroseismic inferences
16:40-17:10 Stella Kafka (invited) The AAVSO Program: 100+ years of pulsator research
17:10-17:30
Nancy Chanover, Director of the ARC 3.5m.  Apache Point Observatory Presentation

20:00-22:00 Casino/Game Night in the Trestle Room (The Lodge Resort and Spa).

Tuesday, October 15:

SESSION 3: STELLAR EVOLUTION AND PULSATION THEORY
Chair: Nina Hernitschek

08:30-09:00 Santi Cassisi (invited) An evolutionary framework for low- and intermediate-mass pulsating stars
09:00-09:20 Hilding Neilson The Curious Case of the North Star:  the continuing tension between evolution models and measurements of Polaris
09:20-09:40 Joyce Guzik Investigating Opacity Modifications and Reaction Rate Uncertainties to Resolve the Cepheid Mass Discrepancy
09:40-10:00 Norbert Przybilla Non-LTE analysis of Cepheids
10:00-10:20 Zdenek Prudil Main and early shocks in RR Lyrae photometric light curves

10:20-10:30 Poster lightning session
10:30-11:00 COFFEE BREAK

11:00-11:20 Susmita Das A study of the stellar photosphere-hydrogen ionisation front interaction in pulsating variables using period-color relations
11:20-11:40 Shashi Kanbur When a Period is not a Full Stop: Light Curve Structure Reveals Fundamental Properties of Cepheid and RR Lyrae Stars
11:40-12:00 Robert Deupree RR Lyrae Mode Selection: Does Convection Matter?

12:00-14:00 LUNCH at the Lodge Resort and Spa
13:00-14:00 BREAKOUT SESSION K2/TESS Business (Marcia Room at the Lodge Resort and Spa)

14:00-14:30 Zoltán Kolláth (invited) Tomography of Blazhko modulation
14:30-14:50 Henryka Netzel Non-radial modes in classical Ceheids – what to look for in spectroscopy?
14:50-15:10 Marek Skarka The Blazhko effect in the Galactic Bulge fundamental mode RR Lyrae stars

15:10-15:40 COFFEE BREAK

SESSION 4: STELLAR POPULATIONS
Chair: Kathy Vivas

15:40-16:10 Andrea Kunder (invited) Spectroscopy of the inner Galaxy RR Lyrae Stars
16:10-16:30 Nathan De Lee A Wide-Temperature Metallicity Calibration for RR Lyrae Stars using Low-Resolution Spectroscopy 
16:30-16:50 Massimo Marengo Metallicity distribution of Galactic Halo RR Lyrae stars, and the effect of metallicity on RRL PL and PW relations
16:50-17:10 Changqing Luo The instability strip of RRab Stars from LAMOST-Gaia data

19:00-00:00 Apache Point Observatory viewing party (in groups of 15 people).  Meet in the lobby of the Lodge Resort and Spa.

Wednesday, October 16:

CONTINUATION OF SESSION 4: STELLAR POPULATIONS
Chair: Kathy Vivas

08:30-09:00 Vincenzo Ripepi (invited) Classical Cepheids distances based on Gaia and VMC@VISTA observations
09:00-09:20 Alistair Walker The Ultra-Low Density Milky Way Companion Galaxy Crater II and its Variable Stars
09:20-09:40 Young-Wook Lee The Oosterhoff dichotomy in multiple population paradigm
09:40-10:00 Vittorio Braga Omega Centauri: a crossroad for all RR Lyrae

10:00-10:10 Poster Lightning Session
10:10-10:30 COFFEE BREAK

10:30-10:50 Dan Deras A new study of the variable star population in the Hercules globular cluster (M13; NGC 6205)
10:50-11:10 Mario Alberto Yepez Rivera Variable stars in Palomar 13; an evaporating globular cluster
11:10-11:30 Elizabeth Farrell RR Lyrae Statistics of the Retrograde and Prograde Globular Clusters of the Milky Way

11:30-13:00 Box lunch will be provided at the Pavilion.

Conference Social Excursion – The Natural wonders of Southeastern NM
Valley of Fires, Carrizozo, New Mexico – Afternoon Group 1
Three Rivers Petroglyphs, Tularosa, New Mexico – Afternoon Group 2
White Sands National Monument (Group 1 and Group 2 will reconvene at 17:00) Light snacks will be provided before the sunset tour of WSNM.

20:00-22:00 New Mexican dinner buffet at Casa de Sueños

Thursday, October 17:

SESSION 5: GALACTIC STRUCTURE TRACERS
Chair: László Molnár

09:00-09:30 Javier Alonso-Garcia (invited) The VVV/VVV-X survey: Tracing the Galactic Bulge and southern Disc with classical pulsators
09:30-10:00 Giuliana Fiorentino (invited) Weak Galactic halo-dSphs connection from RR Lyrae stars 
10:00-10:20 Abigail Chown 3D maps of the Magellanic Clouds using Classical Cepheids
10:20-10:40 Gustavo Medina A systematic DECam search for RR Lyrae in the outer halo of the Milky Way

10:40-11:00 COFFEE BREAK

11:00-11:20 Peter Ferguson Exploring the 3D structure of the Sagittarius dSph core using RR Lyrae
11:20-11:40 Clara Martínez-Vázquez Tracing the early chemical evolution of Local Group dwarf galaxies using RR Lyrae stars
11:40-12:00 Kathy Vivas Searching for the (very few) RR Lyrae Stars in Ultra-Faint Dwarf Satellites of the Milky Way

12:00-13:30 LUNCH at The Lodge Resort and Spa

SESSION 6: DISTANCE INDICATORS
Chair: Róbert Szabó

13:30-14:00 Jill Neeley (invited) Progress on infrared period-luminosity relations for RR Lyrae stars
14:00-14:20 Anupam Bhardwaj Near-infrared Period-Luminosity relations for Population II Cepheids and RR Lyrae variables
14:20-14:40 Shu Wang Cepheid Mid-Infrared Period-luminosity relation and their applications on the Milky Way’s Structure
14:40-15:00 Sara Mancino Unravelling the cosmic acceleration with LACES

16:00 DEPARTURE FOR RUIDOSO, NM
17:00-22:00 CONFERENCE DINNER at the Hubbard Museum of the American West.  Special guest: Mr. Randy Granger, American Southwest musician and storyteller.

Friday, October 18:

CONTINUATION OF SESSION 6: DISTANCE INDICATORS
Chair: Róbert Szabó

08:30-09:00 Rachael Beaton (invited) Pushing the Precision and Accuracy of RR Lyrae Measurements in the H-band
09:00-09:30 Lucas Macri (invited) Cepheids as extragalactic distance indicators
09:30-09:50 Vincent Hocdé The circumstellar envelopes of Cepheids and their impact on the period-luminosity relationship in the JWST and ELT era
09:50-10:10 Louise Breuval The Galactic Leavitt law from Gaia DR2 visual binaries: implication on the distance scale.
10:10-10:30 Richard I. Anderson On Cepheid distance errors due to companion stars and host clusters

10:30-11:00 COFFEE BREAK

SESSION 7: NEW FRONTIERS OF CLASSICAL PULSATORS
Chair: Richard I. Anderson

11:00-11:30 Radosław Smolec (invited) Classical pulsators: beyond radial modes – observations and theory
11:30-11:50 Christina Gilligan Monte Carlo Parameter Fitting of RR Lyrae Spectra

11:50-13:00 LUNCH at the Pavilion

13:00-13:30 Gergely Hajdu (invited) RR Lyrae variables in binary systems
13:30-14:00 Monika Jurkovic (invited) Type II Cepheids: observational perspective

14:00-14:30 OPEN SESSION/RECAP   Chair: Charles Kuehn

14:30         Closing and Farewell

17:00 Departure for Las Cruces, NM, and El Paso, TX

POSTERS (in the Pavilion) — Please make the posters 40×40 inches/100 x 100 cm in size.

Abdelmajid Benhida, Y. Eljariri, F.L. Sefyani, Z. Benkhaldoun, T. De France, D. Gillet, P. Mathias, K. Kolenberg, K. Chafouai, H. Habib, M. Sabil
TITLE: A new Python interface for the spectroscopic data analysis

Abdelmajid Benhida, F.L. Sefyani, Z. Benkhaldoun, T. De France, D. Gillet, P. Mathias, K. Kolenberg, Y. Eljarir, K. Chafouai, A. Habib, M. Sabil
TITLE: Detection of helium emissions in RR Lyr since 1994

Attila Bódi, Emese Plachy, Pál Szabó, László Molnár, András Pál, Róbert Szabó
TITLE: Many faces of Blazhko modulation observed from space

Young-Beom Jeon
TITLE: Spectroscopic Observations for Five RR Lyrae Stars

Johanna Jurcsik, Á. Sódor , Zs. Bognár
TITLE: Photometric and spectroscopic investigation of the Blazhko star, DR And

Johanna Jurcsik, Z. Prudil, M. Skarka, G. Hajdu
TITLE: On the phase modulation properties of Galactic bulge RRab stars

Pierre Kervella (presented by Louise Breuval), Alexandre Gallenne, Nancy Remage Evans, Laszlo Szabados, Frédéric Arenou, Antoine Mérand
TITLE: Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2

Catherine Lovekin
TITLE: Pulsation and Convection in Cepheids

Gustavo Medina, Bertrand Lemasle, Eva Grebel
TITLE: Classical Cepheids in open clusters in the era of Gaia DR2

János Nuspl, Johanna Jurcsik
TITLE: RR Lyrae stars of M3 in optical and Swift/UVOT near-UV observations

Emese Plachy, Pál Szabó, Attila Bódi, László Molnár, Róbert Szabó
TITLE: Automated Extended Aperture Photometry for K2 RR Lyrae stars

Zdenek Prudil, I. Dékány, M. Catelan, E. K. Grebel, R. Smolec, M. Skarka
TITLE: Spatial and kinematical study of the Oosterhoff dichotomy in the Galactic bulge

Salma Sylla, B. Etebaa, K. Kolenberg, A. Benhida, F.L. Sefyani, Z. Benkhaldoun, T. De France, D. Gillet, P. Mathias, M. Sabil
TITLE: Comparative study of photometry data between Kepler and Oukaimeden Observatory platforms

Jiri Zak, M. Skarka, B. Lemasle, E. Paunzen
TITLE: A detailed analysis of V824 Cas, a low amplitude Cepheid