α TrA Junior

Details α TrA Junior α TrA Junior

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...658l.107a&link_type=abstract

The Astrophysical Journal, Volume 658, Issue 2, pp. L107-L110.

Astronomy and Astrophysics

Astronomy

2

Stars: Coronae, Stars: Individual (Hd 150798), X-Rays: Stars

Scientific paper

The ``hybrid chromosphere'' star α Trianguli Australis (K2 Ib-IIa) displays atypical coronal properties for its class: elevated soft X-ray emission, flare outbursts, and a superhot (T~10 MK) spectrum. The Wide Field Planetary Camera 2 (WFPC2) on board the Hubble Space Telescope (HST) now has found a faint object close to the red supergiant, 0.4" nearly due south and about 1% its intensity in the F160BW ultraviolet filter, consistent with a G0 dwarf. Potentially, the ``young sun'' companion to the massive primary could completely dominate the coronal luminosity. The X-ray centroid in a contemporaneous Chandra High-Resolution Camera (HRC) pointing is offset in the direction of the faint UV secondary, but measurements of the radio counterpart of a serendipitous X-ray source 12" southeast (SE) of α TrA, obtained with the Australia Telescope Compact Array (ATCA), suggest a conflicting offset.

Affiliated with

Also associated with

No associations

Rating

α TrA Junior 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 α TrA Junior, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and α TrA Junior will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1682685