Observational Astronomy

Astronomy and Astrophysics Iii. Observational Guidelines for Mode Identification

On the basis of almost 2000 b, y photoelectric observations of θ Tucanae collected in an international campaign at two sites and of almost 1500 v, u observations collected at one site, observational guidelines for mode identification have been searched. Not only the generally used plane (Ab−y/Ay versus φb−y φy) but each combination of the nonadiabatic observables including amplitude ratio vs. a...

High Performance Computing in Observational Astronomy: Requirements and Challenges

1130-1300: Optical I : Image Processing Pipelines (venue: Chandrasekhar Auditorium) Chair: R. Srianand Bhuvnesh Jain (U. Pennsylvania): Overview of the Large Synoptic Survey Telescope (15) Robert Lupton (Princeton U.): Optical scientific pipelines: the intestinal flora, and how not to reinvent it again (35) Adam Bolton (U. Utah): Beyond the Boxcar: Modern Calibration and Extraction of Optical S...

ASTRONOMY 535 OBSERVATIONAL TECHNIQUES CLASS NOTES Fall 2017 Instructor : Jon Holtzman

Astronomy and Astrophysics Galactic Planetary Nebulae with Wolf-rayet Nuclei. Ii. a Consistent Observational Data Set

We present high resolution spectrophotomet-ric data for a sample of 34 planetary nebulae with [WC] spectral type central stars (WRPNe) in our Galaxy. The observed objects cover a wide range in stellar characteristics: early and late [WC] type stars, as well as weak-emission line stars (WELS). Physical conditions in the nebulae (electron density and temperatures) have been obtained from various ...

Unsolved problems in observational astronomy . II . Focus on rapid response – mining the sky with “ thinking ” telescopes

The existence of rapidly slewing robotic telescopes and fast alert distribution via the Internet is revolutionizing our capability to study the physics of fast astrophysical transients. But the salient challenge that optical time domain surveys must conquer is mining the torrent of data to recognize important transients in a scene full of normal variations. Humans simply do not have the attenti...