Astrophysics> Solar and Stellar Astrophysics
arXiv:1011.0193 (astro-ph)
[Submitted on 31 Oct 2010 (v1), last revised 3 Nov 2010 (this version, v2)]
Title:Orbital Solutions for Two Young, Low-Mass Spectroscopic Binaries in Ophiuchus
View PDFAbstract:We report the orbital parameters for ROXR1 14 and RX J1622.7-2325Nw, two young, low-mass, and double-lined spectroscopic binaries recently discovered in the Ophiuchus star forming region. Accurate orbital solutions were determined from over a dozen high-resolution spectra taken with the Keck II and Gemini South telescopes. These objects are T Tauri stars with mass ratios close to unity and periods of ~5 and ~3 days, respectively. In particular, RX J1622.7-2325Nw shows a non-circularized orbit with an eccentricity of 0.30, higher than any other short-period pre-main sequence spectroscopic binary known to date. We speculate that orbit of RX J1622.7-2325Nw has not yet circularized because of the perturbing action of a ~1" companion, itself a close visual pair. A comparison of known young spectroscopic binaries and main sequence (MS) spectroscopic binaries in the eccentricity-period plane shows an indistinguishable distribution of the two populations, implying that orbital circularization occurs in the first 1 Myr of a star's lifetime. With the results presented in this paper we are increasing by ~4% the small sample of PMS spectroscopic binary stars with known orbital elements.
| Comments: | Accepted for publication in the AJ; 8 figures. Corrected typos in Table 5 |
| Subjects: | Solar and Stellar Astrophysics (astro-ph.SR) |
| Cite as: | arXiv:1011.0193 [astro-ph.SR] |
| (or arXiv:1011.0193v2 [astro-ph.SR] for this version) | |
| https://doi.org/10.48550/arXiv.1011.0193
arXiv-issued DOI via DataCite
|
|
| Related DOI: | https://doi.org/10.1088/0004-6256/141/1/13
DOI(s) linking to related resources
|
Submission history
From: Viviana Rosero [view email][v1] 2010年10月31日 19:02:12 UTC (109 KB)
[v2] Wed, 3 Nov 2010 16:45:43 UTC (109 KB)
Current browse context:
astro-ph.SR
Change to browse by:
References & Citations
export BibTeX citation
Loading...
BibTeX formatted citation
×
Data provided by:
Bibliographic and Citation Tools
Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)
Code, Data and Media Associated with this Article
alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
Papers with Code (What is Papers with Code?)
ScienceCast (What is ScienceCast?)
Demos
Recommenders and Search Tools
Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender
(What is IArxiv?)
arXivLabs: experimental projects with community collaborators
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.
Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.
Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.