%0 Generic %1 wright2013first %A Wright, Edward L. %A Kirkpatrick, J. Davy %A Gelino, Christopher R. %A Fajardo-Acosta, Sergio %A Mace, Gregory %A Eisenhardt, Peter R. %A Stern, Daniel %A McLean, Ian S. %A Skrutskie, M. F. %A Oza, Apurva %A Nelson, M. J. %A Cushing, Michael C. %A Reid, I. Neil %A Fumagalli, Michele %A Burgasser, Adam J. %D 2013 %K myown %T The First AllWISE Proper Motion Discovery: WISEA J070720.50+170532.7 %U http://arxiv.org/abs/1310.6717 %X While quality checking a new motion-aware co-addition of all 12.5 months of WISE data, the source WISE J070720.48+170533.0 was found to have moved 0.9 arc-sec in 6 months. Backtracking this motion allowed us to identify this source as 2MASS J07071961+1705464 and with several entries in the USNO B catalog. An astrometric fit to these archival data gives a proper motion of 1793 +/- 2 mas/yr and a parallax of 37 +/- 42 mas. Photometry from WISE, 2MASS and the POSS can be fit reasonably well by a blackbody with T = 3680 K and an angular radius of 4.34E-11 radians. No clear evidence of H_2 collision-induced absorption is seen in the near-IR. An optical spectrum shows broad deep CaH bands at 638 and 690 nm, broad deep Na D at 598.2 nm, and weak or absent TiO, indicating that this source is an ultra-subdwarf M star with a radial velocity about -21 +/- 18 km/sec relative to the Sun. Given its apparent magnitude, the distance is about 46 +/- 12 pc and the tangential velocity is probably about 400 km/sec, but a more precise parallax is needed to be certain.

@misc{wright2013first, abstract = {While quality checking a new motion-aware co-addition of all 12.5 months of WISE data, the source WISE J070720.48+170533.0 was found to have moved 0.9 arc-sec in 6 months. Backtracking this motion allowed us to identify this source as 2MASS J07071961+1705464 and with several entries in the USNO B catalog. An astrometric fit to these archival data gives a proper motion of 1793 +/- 2 mas/yr and a parallax of 37 +/- 42 mas. Photometry from WISE, 2MASS and the POSS can be fit reasonably well by a blackbody with T = 3680 K and an angular radius of 4.34E-11 radians. No clear evidence of H_2 collision-induced absorption is seen in the near-IR. An optical spectrum shows broad deep CaH bands at 638 and 690 nm, broad deep Na D at 598.2 nm, and weak or absent TiO, indicating that this source is an ultra-subdwarf M star with a radial velocity about -21 +/- 18 km/sec relative to the Sun. Given its apparent magnitude, the distance is about 46 +/- 12 pc and the tangential velocity is probably about 400 km/sec, but a more precise parallax is needed to be certain.}, added-at = {2013-10-25T09:26:05.000+0200}, author = {Wright, Edward L. and Kirkpatrick, J. Davy and Gelino, Christopher R. and Fajardo-Acosta, Sergio and Mace, Gregory and Eisenhardt, Peter R. and Stern, Daniel and McLean, Ian S. and Skrutskie, M. F. and Oza, Apurva and Nelson, M. J. and Cushing, Michael C. and Reid, I. Neil and Fumagalli, Michele and Burgasser, Adam J.}, biburl = {https://www.bibsonomy.org/bibtex/2df7cdec4eae116e52e74a2ba7e7ea6e4/miki}, description = {[1310.6717] The First AllWISE Proper Motion Discovery: WISEA J070720.50+170532.7}, interhash = {2a9bf70bf6700005a972f3fec28e5b4a}, intrahash = {df7cdec4eae116e52e74a2ba7e7ea6e4}, keywords = {myown}, note = {cite arxiv:1310.6717Comment: Submitted to the Astronomical Journal, 10 pages LaTex with 9 embedded figures}, timestamp = {2013-10-25T09:26:05.000+0200}, title = {The First AllWISE Proper Motion Discovery: WISEA J070720.50+170532.7}, url = {http://arxiv.org/abs/1310.6717}, year = 2013 }