NEOWISE-R observation of the coolest known brown dwarf
Abstract
The Wide-field Infrared Survey Explorer (WISE) spacecraft has been reactivated as NEOWISE-R to characterize and search for near-Earth objects. The brown dwarf WISE J085510.83–071442.5 has now been re-observed by NEOWISE-R, and we confirm the results of Luhman, who found a very low effective temperature (≈250 K), a very high proper motion (8.''1 ± 0.''1 yr{sup –1}), and a large parallax (454 ± 45 mas). The large proper motion has separated the brown dwarf from the background sources that influenced the 2010 WISE data, allowing a measurement of a very red WISE color of W1 – W2 >3.9 mag. A re-analysis of the 2010 WISE astrometry using only the W2 band, combined with the new NEOWISE-R 2014 position, gives an improved parallax of 448 ± 33 mas and a proper motion of 8.''08 ± 0.''05 yr{sup –1}. These are all consistent with values from Luhman.
- Authors:
-
- UCLA Astronomy, P.O. Box 951547, Los Angeles, CA 90095-1547 (United States)
- Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States)
- Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125 (United States)
- Department of Physics and Astronomy, University of Toledo, 2801 West Bancroft Street, Toledo, OH 43606-3328 (United States)
- Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States)
- Publication Date:
- OSTI Identifier:
- 22342235
- Resource Type:
- Journal Article
- Journal Name:
- Astronomical Journal (New York, N.Y. Online)
- Additional Journal Information:
- Journal Volume: 148; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLOR; DATA; DWARF STARS; INFRARED SURVEYS; MASS; PROPER MOTION; STARS
Citation Formats
Wright, Edward L., Mainzer, Amy, Bauer, James, Eisenhardt, Peter R. M., Davy Kirkpatrick, J., Masci, Frank, Fajardo-Acosta, Sergio, Gelino, Christopher R., Beichman, Charles A., Cutri, Roc, Cushing, Michael C., Skrutskie, M. F., and Grav, T., E-mail: wright@astro.ucla.edu. NEOWISE-R observation of the coolest known brown dwarf. United States: N. p., 2014.
Web. doi:10.1088/0004-6256/148/5/82.
Wright, Edward L., Mainzer, Amy, Bauer, James, Eisenhardt, Peter R. M., Davy Kirkpatrick, J., Masci, Frank, Fajardo-Acosta, Sergio, Gelino, Christopher R., Beichman, Charles A., Cutri, Roc, Cushing, Michael C., Skrutskie, M. F., & Grav, T., E-mail: wright@astro.ucla.edu. NEOWISE-R observation of the coolest known brown dwarf. United States. https://doi.org/10.1088/0004-6256/148/5/82
Wright, Edward L., Mainzer, Amy, Bauer, James, Eisenhardt, Peter R. M., Davy Kirkpatrick, J., Masci, Frank, Fajardo-Acosta, Sergio, Gelino, Christopher R., Beichman, Charles A., Cutri, Roc, Cushing, Michael C., Skrutskie, M. F., and Grav, T., E-mail: wright@astro.ucla.edu. 2014.
"NEOWISE-R observation of the coolest known brown dwarf". United States. https://doi.org/10.1088/0004-6256/148/5/82.
@article{osti_22342235,
title = {NEOWISE-R observation of the coolest known brown dwarf},
author = {Wright, Edward L. and Mainzer, Amy and Bauer, James and Eisenhardt, Peter R. M. and Davy Kirkpatrick, J. and Masci, Frank and Fajardo-Acosta, Sergio and Gelino, Christopher R. and Beichman, Charles A. and Cutri, Roc and Cushing, Michael C. and Skrutskie, M. F. and Grav, T., E-mail: wright@astro.ucla.edu},
abstractNote = {The Wide-field Infrared Survey Explorer (WISE) spacecraft has been reactivated as NEOWISE-R to characterize and search for near-Earth objects. The brown dwarf WISE J085510.83–071442.5 has now been re-observed by NEOWISE-R, and we confirm the results of Luhman, who found a very low effective temperature (≈250 K), a very high proper motion (8.''1 ± 0.''1 yr{sup –1}), and a large parallax (454 ± 45 mas). The large proper motion has separated the brown dwarf from the background sources that influenced the 2010 WISE data, allowing a measurement of a very red WISE color of W1 – W2 >3.9 mag. A re-analysis of the 2010 WISE astrometry using only the W2 band, combined with the new NEOWISE-R 2014 position, gives an improved parallax of 448 ± 33 mas and a proper motion of 8.''08 ± 0.''05 yr{sup –1}. These are all consistent with values from Luhman.},
doi = {10.1088/0004-6256/148/5/82},
url = {https://www.osti.gov/biblio/22342235},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 5,
volume = 148,
place = {United States},
year = {Sat Nov 01 00:00:00 EDT 2014},
month = {Sat Nov 01 00:00:00 EDT 2014}
}