A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268
We report high-precision interferometric and radial velocity (RV) observations of the M-dwarf binary Gl 268. Combining measurements conducted using the IOTA interferometer and the ELODIE and Harvard Center for Astrophysics RV instruments leads to a mass of 0.22596 ± 0.00084 M [subscript ☉] for compo...
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
IOP Publishing
2015
|
| Online Access: | http://hdl.handle.net/1721.1/95635 |
| _version_ | 1811092093077028864 |
|---|---|
| author | Barry, Richard K. Forveille, Thierry Danchi, W. C. Di Folco, E. Queloz, D. Spooner, H. R. Torres, G. Traub, W. A. Delfosse, Xavier Mayor, Michel Perrier, C. Udry, S. Demory, Brice-Olivier Segransan, D. |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Barry, Richard K. Forveille, Thierry Danchi, W. C. Di Folco, E. Queloz, D. Spooner, H. R. Torres, G. Traub, W. A. Delfosse, Xavier Mayor, Michel Perrier, C. Udry, S. Demory, Brice-Olivier Segransan, D. |
| author_sort | Barry, Richard K. |
| collection | MIT |
| description | We report high-precision interferometric and radial velocity (RV) observations of the M-dwarf binary Gl 268. Combining measurements conducted using the IOTA interferometer and the ELODIE and Harvard Center for Astrophysics RV instruments leads to a mass of 0.22596 ± 0.00084 M [subscript ☉] for component A and 0.19230 ± 0.00071 M [subscript ☉] for component B. The system parallax as determined by these observations is 0.1560 ± 0.0030 arcsec—a measurement with 1.9% uncertainty in excellent agreement with Hipparcos (0.1572 ± 0.0033). The absolute H-band magnitudes of the component stars are not well constrained by these measurements; however, we can place an approximate upper limit of 7.95 and 8.1 for Gl 268A and B, respectively. We test these physical parameters against the predictions of theoretical models that combine stellar evolution with high fidelity, non-gray atmospheric models. Measured and predicted values are compatible within 2σ. These results are among the most precise masses measured for visual binaries and compete with the best adaptive optics and eclipsing binary results. |
| first_indexed | 2024-09-23T15:12:52Z |
| format | Article |
| id | mit-1721.1/95635 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:12:52Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/956352022-09-29T13:25:11Z A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 Barry, Richard K. Forveille, Thierry Danchi, W. C. Di Folco, E. Queloz, D. Spooner, H. R. Torres, G. Traub, W. A. Delfosse, Xavier Mayor, Michel Perrier, C. Udry, S. Demory, Brice-Olivier Segransan, D. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Demory, Brice-Olivier Segransan, D. Di Folco, E. Udry, S. Queloz, D. We report high-precision interferometric and radial velocity (RV) observations of the M-dwarf binary Gl 268. Combining measurements conducted using the IOTA interferometer and the ELODIE and Harvard Center for Astrophysics RV instruments leads to a mass of 0.22596 ± 0.00084 M [subscript ☉] for component A and 0.19230 ± 0.00071 M [subscript ☉] for component B. The system parallax as determined by these observations is 0.1560 ± 0.0030 arcsec—a measurement with 1.9% uncertainty in excellent agreement with Hipparcos (0.1572 ± 0.0033). The absolute H-band magnitudes of the component stars are not well constrained by these measurements; however, we can place an approximate upper limit of 7.95 and 8.1 for Gl 268A and B, respectively. We test these physical parameters against the predictions of theoretical models that combine stellar evolution with high fidelity, non-gray atmospheric models. Measured and predicted values are compatible within 2σ. These results are among the most precise masses measured for visual binaries and compete with the best adaptive optics and eclipsing binary results. United States. National Aeronautics and Space Administration Jet Propulsion Laboratory (U.S.) Harvard-Smithsonian Center for Astrophysics Université de Grenoble Observatory W. M. Keck Observatory 2015-02-25T21:17:49Z 2015-02-25T21:17:49Z 2012-11 2012-08 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/95635 Barry, R. K., B.-O. Demory, D. Ségransan, T. Forveille, W. C. Danchi, E. Di Folco, D. Queloz, et al. “A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268.” The Astrophysical Journal 760, no. 1 (November 2, 2012): 55. © 2012 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/760/1/55 Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
| spellingShingle | Barry, Richard K. Forveille, Thierry Danchi, W. C. Di Folco, E. Queloz, D. Spooner, H. R. Torres, G. Traub, W. A. Delfosse, Xavier Mayor, Michel Perrier, C. Udry, S. Demory, Brice-Olivier Segransan, D. A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title | A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title_full | A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title_fullStr | A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title_full_unstemmed | A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title_short | A PRECISE PHYSICAL ORBIT FOR THE M-DWARF BINARY GLIESE 268 |
| title_sort | precise physical orbit for the m dwarf binary gliese 268 |
| url | http://hdl.handle.net/1721.1/95635 |
| work_keys_str_mv | AT barryrichardk aprecisephysicalorbitforthemdwarfbinarygliese268 AT forveillethierry aprecisephysicalorbitforthemdwarfbinarygliese268 AT danchiwc aprecisephysicalorbitforthemdwarfbinarygliese268 AT difolcoe aprecisephysicalorbitforthemdwarfbinarygliese268 AT quelozd aprecisephysicalorbitforthemdwarfbinarygliese268 AT spoonerhr aprecisephysicalorbitforthemdwarfbinarygliese268 AT torresg aprecisephysicalorbitforthemdwarfbinarygliese268 AT traubwa aprecisephysicalorbitforthemdwarfbinarygliese268 AT delfossexavier aprecisephysicalorbitforthemdwarfbinarygliese268 AT mayormichel aprecisephysicalorbitforthemdwarfbinarygliese268 AT perrierc aprecisephysicalorbitforthemdwarfbinarygliese268 AT udrys aprecisephysicalorbitforthemdwarfbinarygliese268 AT demorybriceolivier aprecisephysicalorbitforthemdwarfbinarygliese268 AT segransand aprecisephysicalorbitforthemdwarfbinarygliese268 AT barryrichardk precisephysicalorbitforthemdwarfbinarygliese268 AT forveillethierry precisephysicalorbitforthemdwarfbinarygliese268 AT danchiwc precisephysicalorbitforthemdwarfbinarygliese268 AT difolcoe precisephysicalorbitforthemdwarfbinarygliese268 AT quelozd precisephysicalorbitforthemdwarfbinarygliese268 AT spoonerhr precisephysicalorbitforthemdwarfbinarygliese268 AT torresg precisephysicalorbitforthemdwarfbinarygliese268 AT traubwa precisephysicalorbitforthemdwarfbinarygliese268 AT delfossexavier precisephysicalorbitforthemdwarfbinarygliese268 AT mayormichel precisephysicalorbitforthemdwarfbinarygliese268 AT perrierc precisephysicalorbitforthemdwarfbinarygliese268 AT udrys precisephysicalorbitforthemdwarfbinarygliese268 AT demorybriceolivier precisephysicalorbitforthemdwarfbinarygliese268 AT segransand precisephysicalorbitforthemdwarfbinarygliese268 |