VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT
TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio and short orbital period are atypical among binary systems with solar-like (T [subscript eff] [< over ~] 6000 K) primary stars. Our analysis of TYC 4110-01037-1 reveals it to be a moderately aged ([< over ~] Gyr) solar-l...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
IOP Publishing
2015
|
| Online Access: | http://hdl.handle.net/1721.1/92931 |
| _version_ | 1811080549620514816 |
|---|---|
| author | Stassun, Keivan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Stassun, Keivan |
| author_sort | Stassun, Keivan |
| collection | MIT |
| description | TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio and short orbital period are atypical among binary systems with solar-like (T [subscript eff] [< over ~] 6000 K) primary stars. Our analysis of TYC 4110-01037-1 reveals it to be a moderately aged ([< over ~] Gyr) solar-like star having a mass of 1.07 ± 0.08 M [subscript ☉] and radius of 0.99 ± 0.18 R [subscript ☉]. We analyze 32 radial velocity (RV) measurements from the SDSS-III MARVELS survey as well as 6 supporting RV measurements from the SARG spectrograph on the 3.6 m Telescopio Nazionale Galileo telescope obtained over a period of ~2 years. The best Keplerian orbital fit parameters were found to have a period of 78.994 ± 0.012 days, an eccentricity of 0.1095 ± 0.0023, and a semi-amplitude of 4199 ± 11 m s[superscript –1]. We determine the minimum companion mass (if sin i = 1) to be 97.7 ± 5.8 M [subscript Jup]. The system's companion to host star mass ratio, ≥0.087 ± 0.003, places it at the lowest end of observed values for short period stellar companions to solar-like (T [subscript eff] [< over ~] 6000 K) stars. One possible way to create such a system would be if a triple-component stellar multiple broke up into a short period, low q binary during the cluster dispersal phase of its lifetime. A candidate tertiary body has been identified in the system via single-epoch, high contrast imagery. If this object is confirmed to be comoving, we estimate it would be a dM4 star. We present these results in the context of our larger-scale effort to constrain the statistics of low-mass stellar and brown dwarf companions to FGK-type stars via the MARVELS survey. |
| first_indexed | 2024-09-23T11:33:21Z |
| format | Article |
| id | mit-1721.1/92931 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:33:21Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/929312022-10-01T04:24:19Z VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT Stassun, Keivan Massachusetts Institute of Technology. Department of Physics Stassun, Keivan TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio and short orbital period are atypical among binary systems with solar-like (T [subscript eff] [< over ~] 6000 K) primary stars. Our analysis of TYC 4110-01037-1 reveals it to be a moderately aged ([< over ~] Gyr) solar-like star having a mass of 1.07 ± 0.08 M [subscript ☉] and radius of 0.99 ± 0.18 R [subscript ☉]. We analyze 32 radial velocity (RV) measurements from the SDSS-III MARVELS survey as well as 6 supporting RV measurements from the SARG spectrograph on the 3.6 m Telescopio Nazionale Galileo telescope obtained over a period of ~2 years. The best Keplerian orbital fit parameters were found to have a period of 78.994 ± 0.012 days, an eccentricity of 0.1095 ± 0.0023, and a semi-amplitude of 4199 ± 11 m s[superscript –1]. We determine the minimum companion mass (if sin i = 1) to be 97.7 ± 5.8 M [subscript Jup]. The system's companion to host star mass ratio, ≥0.087 ± 0.003, places it at the lowest end of observed values for short period stellar companions to solar-like (T [subscript eff] [< over ~] 6000 K) stars. One possible way to create such a system would be if a triple-component stellar multiple broke up into a short period, low q binary during the cluster dispersal phase of its lifetime. A candidate tertiary body has been identified in the system via single-epoch, high contrast imagery. If this object is confirmed to be comoving, we estimate it would be a dM4 star. We present these results in the context of our larger-scale effort to constrain the statistics of low-mass stellar and brown dwarf companions to FGK-type stars via the MARVELS survey. Vanderbilt University (Initiative in Data-Intensive Astrophysics) National Science Foundation (U.S.) (CAREER Grant AST0349075) 2015-01-16T15:39:50Z 2015-01-16T15:39:50Z 2012-03 2011-10 Article http://purl.org/eprint/type/JournalArticle 0004-6256 1538-3881 http://hdl.handle.net/1721.1/92931 Wisniewski, John P., Jian Ge, Justin R. Crepp, Nathan De Lee, Jason Eastman, Massimiliano Esposito, Scott W. Fleming, et al. “VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT.” The Astronomical Journal 143, no. 5 (March 27, 2012): 107. © 2012 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-6256/143/5/107 The Astronomical 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 | Stassun, Keivan VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title | VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title_full | VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title_fullStr | VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title_full_unstemmed | VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title_short | VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. I. A LOW-MASS RATIO STELLAR COMPANION TO TYC 4110-01037-1 IN A 79 DAY ORBIT |
| title_sort | very low mass stellar and substellar companions to solar like stars from marvels i a low mass ratio stellar companion to tyc 4110 01037 1 in a 79 day orbit |
| url | http://hdl.handle.net/1721.1/92931 |
| work_keys_str_mv | AT stassunkeivan verylowmassstellarandsubstellarcompanionstosolarlikestarsfrommarvelsialowmassratiostellarcompaniontotyc4110010371ina79dayorbit |