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Title: |
6th Meeting on Hot Subdwarf Stars and Related Objects
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Volume: |
481
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Year: |
2014
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View this Volume on ADS
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Editors: |
Van Grootel, V.; Green, E.; Fontaine, G.; Charpinet, S.
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Synopsis: |
6TH CONFERENCE ON HOT SUBDWARF
STARS AND RELATED OBJECTS
Tucson, Arizona, USA
May 19–24, 2013
These are the proceedings of the Sixth International Meeting on Hot Subdwarf Stars and Related Objects held at the University of Arizona, Tucson, in May 2013. The aim of these biennal workshops is to disseminate recent results on the properties, formation, and evolution of hot subdwarf stars and related objects, and to assess the impact of recent results on other areas of astrophysics.
Most hot subdwarfs belong to the B (sdB) type, and are evolved, low-mass, core He-burning stars that populate the Extreme Horizontal Branch (EHB). They have outer H-rich layers so thin that they evolve directly to the white dwarf domain aer core He exhaustion. The less numerous, hotter O (sdO) type subdwarfs make a less homogeneous family than their B counterparts. Some of them descend directly from sdB's on their way to the white dwarf stage, but others descend from the post-asymptotic branch evolutionary phase, while still others are very low mass post-red giant branch stars. Both the sdB and sdO types are found in the field and in some globular clusters.
These proceedings constitute a snapshot of the current research in the field. Topics include the formation of EHB stars, a key question in stellar evolution. Hot subdwarf stars are also an excellent tool for studying stellar evolution in close binary star systems with various companions. Many hot subdwarfs exhibit stellar pulsations, which allows asteroseismology to be used for inferring their fundamental parameters. Hot subdwarf stars and their atmospheres are also a laboratory for studying the effects of diffusion, weak stellar winds, radiative levitation, and gravitational settling.
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ISBN: |
978-1-58381-846-6
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eISBN:
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978-1-58381-847-3
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Paper Title |
Page |
Authors |
Front Matter |
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Book Cover |
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Front Matter |
1 |
Van Grootel, V.; Green, E.; Fontaine, G. |
Conference Photos |
2 |
Van Grootel, V.; Green, E.; Fontaine, G. |
Session I. Pulsating Subdwarfs and Asteroseismology I |
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The EXOTIME Monitoring Program Discovers Substellar Companion Candidates around the Rapidly Pulsating Subdwarf B Stars V1636 Ori and DW Lyn |
3 |
Schuh, S.; Silvotti, R.; Lutz, R.; Kim, S.-L.; EXOTIME collaboration |
Planetary Companions to sdB stars |
13 |
Silvotti, R.; Østensen, R.; Telting, J.; Lovis, C. |
Observational Asteroseismology of Hot Subdwarf Stars with the Mont4K/Kuiper Combination at the Steward Observatory Mount Bigelow Station |
19 |
Fontaine, G.; Green, E.; Charpinet, S.; Latour, M.; Randall, S.; Van Grootel, V.; Brassard, P. |
The Discovery of Pulsating Hot Subdwarfs in NGC 2808 |
29 |
Brown, T.; Landsman, W.; Randall, S.; Sweigart, A.; Lanz, T.; Hubeny, I. |
A Helium-Rich g-Mode Pulsator on the Blue Horizontal Branch |
37 |
Østensen, R. H. |
Precision Observational Asteroseismology Using Kepler Spacecraft Data |
45 |
Reed, M.; Foster, H. |
Session II. Atmospheric Analyses |
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Spectroscopic Analysis of Hot Subdwarf Stars in the Globular Cluster NGC 6752 |
59 |
Chayer, P.; Dixon, W. |
NLTE Analysis of the Hot sdO Star Bd+28°4211: The UV Spectrum |
67 |
Latour, M.; Fontaine, G.; Chayer, P.; Brassard, P.; Green, E. |
SD1000 Collaboration: Hunting down the Subdwarf Populations |
75 |
Nemeth, P.; Østensen, R.; Vos, J.; Kawka, A.; Vennes, S. |
Results from the Arizona-Montréal Spectroscopic Program: A Detailed Look at the He Abundance Pattern in Hot Subdwarfs |
83 |
Fontaine, G.; Green, E.; Brassard, P.; Latour, M.; Chayer, P. |
High S/N Spectroscopy and Radial Velocities of Field BHB Tip Stars Similar to KIC 1718290 |
87 |
Green, E.; O'Connell, C.; Fontaine, G. |
Updates on the Pulsating sdB Star Feige 48 through Spectroscopy |
91 |
Latour, M.; Fontaine, G.; Green, E. |
Synthetic Spectra for O and B Type Subdwarf Stars |
95 |
Nemeth, P.; Østensen, R.; Tremblay, P.; Hubeny, I. |
Session III. Pulsating Subdwarfs and Asteroseismology II |
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Precision and Accuracy of Asteroseismology Applied to sdB stars Using the Forward Modeling Method |
105 |
Charpinet, S.; Van Grootel, V.; Brassard, P.; Fontaine, G.; Green, E.; Randall, S. |
Modeling the Hot Subdwarf PB 8783 by Asteroseismology |
115 |
Van Grootel, V.; Charpinet, S.; Fontaine, G.; Brassard, P.; Green, E. M. |
Shock Diagnostics in the Pulsating Proto-Subdwarf V652 Herculis |
125 |
Jeffery, C.; Montañés-Rodríguez, P.; Shibahashi, H.; Kurtz, D.; Elkin, V.; Saio, H. |
Subdwarf B Star Rotation |
133 |
Lynas-Gray, A. |
Mode Identification in Subdwarf B Stars from Multi-Wavelength Observations |
139 |
Randall, S.; Fontaine, G.; Brassard, P.; Van Grootel, V.; Charpinet, S. |
Session IV. Pulsating Subdwarfs and Asteroseismology III |
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Photometric Survey to Search for Field sdO Pulsators |
153 |
Johnson, C.; Green, E.; Wallace, S.; O'Malley, C.; Amaya, H.; Biddle, L.; Fontaine, G. |
Glimpses into the Secret Lives of Hot Subdwarf Stars |
161 |
Green, E.; Johnson, C.; Wallace, S.; O'Malley, C.; Amaya, H.; Biddle, L.; Fontaine, G. |
A Search for High-Degree Modes in Two Pulsating sdB Stars |
169 |
Baran, A.; Reed, M.; Jeffery, C.; Telting, J.; Farris, L.; Shadwick, M.; Kiaeerad, F. |
An Algorithm for Mode Matching in the Forward Asteroseismological Approach |
175 |
Brassard, P.; Fontaine, G. |
On Interpreting g-Mode Period Spacings in sdB Stars |
179 |
Charpinet, S.; Brassard, P.; Van Grootel, V.; Fontaine, G. |
An Analysis of Ten Quarters of Kepler Observations of the Subdwarf B Star KIC 3527751 |
183 |
Foster, H.; Reed, M. |
Updates on the Asteroseismological Study of the ZZ Ceti Star R548: Determination of the Bulk Core Composition |
187 |
Giammichele, N.; Fontaine, G.; Brassard, P. |
Session V. Modeling and Evolution of Hot Subdwarfs |
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Exploring Stellar Evolution Models of sdB Stars Using MESA With Convective Overshoot |
197 |
Schindler, J.; Green, E.; Arnett, D. |
The sdB Mass - Orbital Period Relation for Long-Orbital-Period SdB+MS Binaries |
205 |
Chen, X.; Han, Z.; Deca, J.; Podsiadlowski, P. |
Tidally Enhanced Stellar Wind in Binaries as a Second Parameter for the Horizontal Branch Morphology of Globular Clusters |
213 |
Han, Z.; Lei, Z. |
Improved Diffusion Coefficients for Stellar Plasmas |
221 |
Brassard, P.; Fontaine, G. |
Hot Subdwarf Stars and the ZAHeMS |
225 |
Brown, D. |
The Mass Distribution of sdB Stars Derived by Asteroseismology and Other Means: Implications for Stellar Evolution Theory |
229 |
Van Grootel, V.; Charpinet, S.; Fontaine, G.; Brassard, P.; Green, E. |
Hot Subdwarf Stars as the Donors of Type Ia Supernova Progenitors |
233 |
Wang, B.; Han, Z. |
Session VI. Hot Subdwarfs in Binaries I |
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MUCHFUSS: Status and Highlights |
243 |
Geier, S.; Kupfer, T.; Barlow, B; Schaffenroth, V.; Fürst, F.; Heuser, C.; Ziegerer, E.; Heber, U.; Marsh, T.; Maxted, P.; Østensen, R.; O'Toole, S.; Gänsicke, B.; Napiwotzki, R. |
New HW Virginis Systems from the MUCHFUSS Project |
253 |
Schaffenroth, V.; Geier, S.; Barbu-Barna, I.; Heber, U.; Kupfer, T.; Cordes, O. |
X–shooting HW Vir |
259 |
Vučković, M.; Bloemen, S.; Østensen, R. |
Long Period sdB + MS Binaries with Mercator |
265 |
Vos, J.; Østensen, R.; Van Winckel, H. |
Spectroscopic Orbital Elements for Helium Rich Subdwarf Binary PG1544+488 |
273 |
Şener, H.; Jeffery, C. |
Session VII. Hot Subdwarfs in Binaries II |
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Low-Resolution Radial-Velocity Monitoring of Pulsating sdBs in the Kepler Field |
287 |
Telting, J.; Østensen, R.; Reed, M.; Kiæerad, F.; Farris, L.; Baran, A.; Oreiro, R.; O'Toole, S. |
Finding Compact Hot Subdwarf Binaries in the Galactic Disc |
293 |
Kupfer, T.; Geier, S.; McLeod, A.; Groot, P.; Verbeek, K.; Schaffenroth, V.; Heber, U.; Heuser, C.; Ziegerer, E.; Østensen, R.; Nemeth, P.; Dhillon, V.; Butterley, T.; Littlefair, S.; Wilson, R.; Telting, J.; Shporer, A.; Fulton, B. |
Resolved, but Unresolved: A Trio of Triple– and Quadruple–Star Hot Subdwarf Systems |
301 |
Barlow, B.; Wade, R.; Liss, S.; Stark, M. |
The Mysterious sdO X-ray Binary BD+37°442 |
307 |
Heber, U.; Geier, S.; Irrgang, A.; Schneider, D.; Barbu-Barna, I.; Mereghetti, S.; La Palombara, N. |
A Radial Velocity Survey of Hot Subdwarfs with Main Sequence Companions using the Hobby–Eberly Telescope |
311 |
Wade, R.; Barlow, B.; Liss, S.; Stark, M. |
Back Matter |
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Back Matter |
316 |
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