Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943910s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #439.10
Astronomy and Astrophysics
Astronomy
Scientific paper
We present an analysis of over 100 ks of data on the planetary nebula WeBo 1 (PN G135.6+01.0) obtained with the Swift Ultraviolet Optical Telescope (UVOT). The central object of this nebula has previously been described as a late-type K giant with a possible hot companion, most likely a young pre-white dwarf. UVOT photometry shows that while the optical photometry is consistent with a large cool object, the NUV photometry shows far more ultaviolet flux than could be produced by any late-type object. Using model stellar atmospheres and a comparison to UVOT photometry for the archetype pre-white dwarf PG1159-035, we find that the companion has a temperature of at least 40,000 K and a radius of, at most, .056 solar radii. We find that higher temperatures more consistent with expectations for a pre-white dwarf can be derived if the foreground dust has a strong "blue bump" at 2175 Angstroms and a lower R_V. Our results demonstrate the ability of Swift to both uncover and characterize hot hidden companion stars and to constrain the UV extinction properties of foreground dust based solely on UVOT photometry
Bond Howard E.
Hoversten Erik
Siegel Michael
No associations
LandOfFree
Swift/UVOT Photometry of WeBo 1: Unmasking a Faint Hot Companion Star 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 Swift/UVOT Photometry of WeBo 1: Unmasking a Faint Hot Companion Star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swift/UVOT Photometry of WeBo 1: Unmasking a Faint Hot Companion Star will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1585642