http://arxiv.org/abs/1904.06980
In this Letter we investigate the spatial properties of sources from the GAIA catalogue previously identified as being members of the Taurus star forming region and which appear in the Spitzer catalogue. We study an area of sky of 10×15 deg, centred on Right Ascension (2000.0) 68.5 deg and Declination (2000.0) 27.0 deg, this being an area surrounding the Taurus molecular cloud. We use data obtained from the GAIA DR2 release. By using an inversion of GAIA parallax measurements to obtain distance values and by defining limits to the proper motions of the Taurus moving group, we are able to show that there are substantial differences in depth within the Taurus complex. Our results suggest that the Taurus cloud is at least as deep as it is wide and that there are two main associations centred at 130.6+/-0.7 pc and 160.2+/-0.9 pc respectively. The two associations also have different proper motions, of 24.5+/-2.8 and 20.1+/-2.4 mas/yr respectively. We here label them the two `horns’ of Taurus.
G. Fleming, J. Kirk and D. Ward-Thompson
Tue, 16 Apr 19
30/88
Comments: 5 figures, 4 tables, 15 pages in preprint format, submitted to ApJ Letters
You must be logged in to post a comment.