Soft coronal X-rays from β Pictoris

Details Soft coronal X-rays from β Pictoris Soft coronal X-rays from β Pictoris

2012-03-15

arxiv.org/abs/1203.3242v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

accepted by ApJ, 5 pages, 2 figures

Scientific paper

A type stars are expected to be X-ray dark, yet weak emission has been detected from several objects in this class. We present new Chandra/HRC-I observations of the A5 V star \beta{} Pictoris. It is clearly detected with a flux of 9+-2 10^{-4} counts/s. In comparison with previous data this constrains the emission mechanism and we find that the most likely explanation is an optically thin, collisionally dominated, thermal emission component with a temperature around 1.1 MK. We interpret this component as a very cool and dim corona, with \log L_X/L_{bol}=-8.2 (0.2-2.0 keV). Thus, it seems that \beta{} Pictoris shares more characteristics with cool stars than previously thought.

Affiliated with

Also associated with

No associations

Rating

Soft coronal X-rays from β Pictoris 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 Soft coronal X-rays from β Pictoris, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft coronal X-rays from β Pictoris will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-30092