Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs.

Details Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs. Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs.

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942815v&link_type=abstract

American Astronomical Society, AAS Meeting #219, #428.15

Statistics

Methodology

Scientific paper

When studying blue objects (-0.3 < g-r < 0.0) in the SDSS, the u-g color has proven invaluable for the photometric splitting of white dwarfs and quasars quasars (which are quite blue), and A stars. The g-r vs u-g color space has even been shown to be quite effective at separating dwarf stars (blue stragglers, main sequence A stars) from giant (blue horizontal branch) stars since the Balmer jump at 365 nm falls into the u passband and is quite sensitive to surface gravity.
The Pan-STARRS however, lacks a u passband. New techniques must therefore be employed to separate these objects from each other. We have had success using the z filter in SDSS data as a photometric surface gravity indicator to separate high gravity main sequence A stars from low gravity blue horizontal branch stars. Quasars have also been found to separate out well with the use of the g-z color. This is fortuitous with regard to the Pan-STARRS since Pan-STARRS filter sets will roughly imitate the SDSS filter set for griz colors, so techniques developed now using SDSS data can easily be employed as soon as Pan-STARRS data becomes available.
We present the basic methodology for constructing the color cut. We show its sampling completeness using the horizontal branches of Milky Way globular clusters and its accuracy using the spectroscopic database of the Sloan Digital Sky Survey Data Release 8. Our prime result is a map of the celestial equator with many of the well known structures such as Sagittarius, Virgo, and the Hercules-Aquila cloud revealed by BHB samples.

Affiliated with

Also associated with

No associations

Rating

Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using The Z Band For Stellar Classification: Looking Forward To Pan-starrs. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1584158