News
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Goals:
Research communities addressing the hot and cool parts of the uppermost
Hertzsprung-Russell diagram (HRD) have been stubbornly disjoint. This
workshop aims to bridge the gap between researchers studying these
different sides ofthe HRD. While morphologically separated, stars
occupying these extremes of the HRD are intimately related via evolution, as
well as both having atmospheric properties affected by extension and stellar
wind outflow. At cosmological scales, like in distant starburst galaxies, the
historical distinction between blue and red stellar populations becomes
obsolete, and understanding the complex relation between the red and
blue parts of the HRD is mandatory.
This meeting will allow us to investigate similarities and differences
between hot and cool stars, identify the most challenging questions in
evolutionary connections, and discuss latest theoretical and observational
progress and prospects in certain evolutionary or mass/temperature regimes
which will provide a more unified understanding of massive stars and luminous
extragalactic stellar populations.
Session Topics:
1. Evolutionary Connections
- Evolution across the HRD at different metalicities
- Evolution of angular momentum across the HRD
- Role of magnetic fields
- Binary vs. single-star evolution
2. Late and End Phases
- Post-RSG and blue-loop stars
- Supernovae from red vs. blue progenitors
- Gamma-ray bursts and their relation to W-R stars
- Gamma-ray burst hosts as star-forming galaxies
3. Atmospheres
- Uncertainties of basic stellar parameters
- State of the art models
- Role of convection
- Abundance determinations in hot and cool supergiants
4. Mass Loss
- Mass-loss rates across the upper HRD
- Mass-loss mechanisms for hot and cool stars
- Non-standard mechanisms - convection, magnetic fields
- Episodic mass loss and pulsations in hot and cool stars
5. Interacting Winds and
Circumstellar Environments
- Interaction between winds from different evolutionary phases
- Role of shocks
- Role of binaries, and relation to morphology
- Resolved circumstellar material
- Dust formation in RSGs, LBVs, OH-IR stars, W-R stars
See below for a list of invited speakers.
Proceedings of the meeting will be published in the Astronomical
Society of the Pacific Conference Series, eds. C. Leitherer, P.
Bennett, P. Morris, J. van Loon
Venue:
The meeting will take place from Mon-Wed., the 10-12th of November
2008, on the Caltech campus. Attendance must be limited to 80
participants.
For more information on the venue and transportation (including maps)
please see Venue and Transportation.
Image courtesy of www.mtwilson.edu
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Workshop participants are invited to join a guided excursion to the
historic Mt. Wilson Observatory
on Thursday 13 November. The Observatory is located in the nearby
scenic San Gabriel mountains overlooking the LA basin. It hosts the
famous 60 - inch and
100-inch
optical telescopes, the
Snow
and 60- and
150-foot
solar towers, the innovative optical/IR CHARA
and mid-infrared ISI interferometers.
Please indicate your interest in the excursion at the workshop
registration page. Costs are expected to be around ~$25/person,
payable at registration time. Transportation and lunch arrangements will
be provided. We will leave from the Caltech campus around noon and are
expected to return 5-6 PM.
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Invited Speakers (confirmed): |
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P. Bennett (St. Mary's Univ)
C. Crowley (Trinity College)
B. Davies (Rochester Inst. Tech.)
A. Gal-Yam (Caltech)
G. Harper (Univ Colorado)
A. Heger (Univ Minnesota)
J. Hillier (Univ Pittsburgh)
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R. Hirschi (Keele Univ)
R. Humphreys (Univ Minnesota)
C. Kemper (Univ Manchester)
G. Koenigsberger (UNAM)
C. Leitherer (STScI)
E. Levesque (Univ Hawaii)
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J. van Loon (Keele Univ)
P. Massey (Lowell Obs)
J. Monnier (Univ Michigan)
P. Morris (Caltech)
S. Owocki (Univ Deleware)
B. Plez (Univ Montpellier)
N. Smith (Univ Cal/Berkeley)
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| Scientific Organizing Committee: |
Local Organizing Comittee: |
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P. Bennett (St. Mary's Univ)
G. Koenigsberger (UNAM)
C. Leitherer (STScI) - chair
J. van Loon (Keele Univ)
P. Massey (Lowell Obs)
J. Monnier (Univ Michigan)
P. Morris (Caltech/NHSC)
S. Owocki (Univ Delaware)
N. Smith (Univ Cal/Berkeley)
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A. Boogert (Caltech/NHSC)
S. van Dyk (Caltech/SSC)
W. Latter (Caltech/NHSC)
A. McCrary (Caltech/NHSC)
M.E. McElveney (Caltech/NHSC)
P. Morris (Caltech/NHSC) - chair
H. Mycroft (Caltech/JPL)
R. Scholey (Caltech/IPAC)
E. Scire (Caltech/SSC)
S. Stolovy (Caltech/SSC)
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Contact:
If you have any questions or concerns, please email hotandcool@ipac.caltech.edu
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