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Data Mining Workshop
and
MMO Session: History and Current Research
Data Mining Workshop
Friday, October 17, 2008
9:00 am — 12:00 pm
| 9:00 am |
Introduction
powerpoint | pdf | video
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Paula Szkody |
15
minutes |
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| 9:15 am |
Using the ASAS-3 Database
poweroint | pdf | video
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Aaron Price |
25
minutes |
| 9:40 am |
Using the AAVSO International Database
powerpoint | pdf | video
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Aaron Price |
20
minutes |
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| 10:00 am |
An
Introductory Overview of the National Virtual
Observatory & How It Might Benefit the AAVSO
powerpoint | pdf | video
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Richard 'Doc' Kinne |
20
minutes |
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| 10:20 am |
Coffee Break |
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30
minutes |
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| 10:50 am |
Data
Mining, ADQL, & the National Virtual
Observatory's
OpenSkyQuery Utility
powerpoint | pdf | video
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Richard 'Doc' Kinne |
30
minutes |
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| 11:20 am |
SDSS
and GALEX Databases
powerpoint | pdf | video
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Paula Szkody |
15
minutes |
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| 11:35 am |
Palomar-Quest
and other new surveys
powerpoint | pdf | video
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Arne Henden |
25
minutes |
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Automated
calibration and an open-source sky survey
pdf | video
Abstract:
I describe a system that can take any astronomical image (professional,
historical, or amateur) and, based on the content of the pixels alone,
determine the pointing, rotation, and scale of that image, plus other
calibration information (such as date, bandpass, point-spread function,
and sensitivity). We are using this system to start an "open-source
sky survey" in which we build up time-resolved imaging of the sky, and
a physical model of the sources therein, from heterogeneous data from
all available sources. This is a great opportunity to start a rich
communication channel between professional and amateur astronomers,
with data and ideas flowing both ways.
|
David Hogg |
30
minutes |
MMO Session: History and Current Research
Celebrating the 100th Anniversary of the Maria Mitchell Observatory
Friday, October 17, 2008
2:00 pm — 5:00 pm
| 2:00 pm |
Opening
Remarks |
Toni McKerrow |
10
minutes |
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| 2:10 pm |
The
Mitchells Good
powerpoint | pdf
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Jascin Finger |
20
minutes |
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| 2:30 pm |
Mentored
by Stars
powerpoint | pdf
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Frances Karttunen |
20
minutes |
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| 2:50 pm |
Recollections
of the inspirational Dorrit Hoffleit by her first male
assistant at MMO
powerpoint | pdf
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John Briggs |
20
minutes |
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| 3:10 am |
Nantucket:
an Astronomical Island
powerpoint | pdf
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Vladimir Strelnitski |
20
minutes |
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| 3:30 pm |
Coffee Break |
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30
minutes |
| 4:00 pm |
Observations
of Exoplanets at the MMO
powerpoint | pdf
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Jed Williams |
20
minutes |
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| Coauthors: Gary
Walker, & Vladimir Strelnitski |
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| Abstract:
A program of exoplanet transit photometry was started at the MMO in the
Spring of 2008. Our approaches to the reduction of systematic errors,
crucial for this type of observations, will be discussed and examples
of reduced light curves will be demonstrated. This project was
supported by the NSF/REU grant AST-0354056 and the Nantucket Maria
Mitchell Association. |
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| 4:20 pm |
News
on the Optical and Radio Variability of MWC349
powerpoint | pdf
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Gary Walker |
20
minutes |
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| Coauthors: Elissa
Sperling, & Vladimir Strelnitski |
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| Abstract:
The results of the long-term (11 years) monitoring of MWC349 at optical
and radio wavelengths, as well as a recent (summer 2008) experiment of
simultaneous optical and radio observations to detect short-term
variability, will be summarized. In particular, we will compare the
results obtained with the 24-inch CCD telescope of the MMO with those
submitted to the AAVSO database by various observers. The revealed
amplitudes of MWC349 variations are small – a few tenths of a
magnitude
for a long-term variations (years) and, typically, less than one tenth
for the short-term variations (months to days). This requires a
relatively high accuracy photometry, not always achieved in amateur
observations. The data obtained so far can be summarized as follows:
(1) No obvious periodicity; (2) The amplitude of variations
monotonically decreases with the decreasing time scale and towards
longer wavelengths; (3) There is correlation of optical (R) and radio
(hydrogen recombination line maser) radiation on both a long and short
time scales, but the amplitude of the radio variations is greater.
Possible interpretation of these results will be discussed. This
project was supported by the NSF/REU grant AST-0354056 and the
Nantucket Maria Mitchell Association. |
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| 4:40 pm |
Spectral
Monitoring of UXORs with Interference Filters
powerpoint | pdf
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Vladimir Strelnitski |
20
minutes |
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| Coauthors: Lauren
Weiss & Gary Walker |
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| Abstract:
UXORs are a small group of pre-main sequence Herbig AeBe stars
exhibiting deep irregular drops of continuum brightness, probably due
to small circumstellar dust cloudlets occulting the star. Scarce
available data from parallel spectroscopy and photometry indicate a
lack of correlation between the variations of emission lines and
continuum. This important result confirms the dust obscuration model
but it needs corroboration. We at MMO started a program of UXORs
monitoring with two interference filters, which is an inexpensive
substitute for spectroscopic monitoring. The theoretical background for
the separation of the temporal behavior of an emission line and the
adjacent continuum by this method, as well as the first results of the
application of the method to a candidate UXOR star, V3798 Sgr will be
summarized. This project was supported by the NSF/REU grant AST-0354056
and the Nantucket Maria Mitchell Association. |
Data Mining and MMO Session Schedule - pdf
Return to Archive Fall 08 Meeting.
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