Repository logo
 

CHARACTERIZATION of the COMPANION μ HER

Simple item page
cam.issuedOnline2016-06-01
dc.contributor.authorRoberts, LC
dc.contributor.authorMason, BD
dc.contributor.authorAguilar, J
dc.contributor.authorCarson, J
dc.contributor.authorCrepp, J
dc.contributor.authorBeichman, C
dc.contributor.authorBrenner, D
dc.contributor.authorBurruss, R
dc.contributor.authorCady, E
dc.contributor.authorLuszcz-Cook, S
dc.contributor.authorDekany, R
dc.contributor.authorHillenbrand, L
dc.contributor.authorHinkley, S
dc.contributor.authorKing, D
dc.contributor.authorLockhart, TG
dc.contributor.authorNilsson, R
dc.contributor.authorOppenheimer, R
dc.contributor.authorParry, IR
dc.contributor.authorPueyo, L
dc.contributor.authorRice, EL
dc.contributor.authorSivaramakrishnan, A
dc.contributor.authorSoummer, R
dc.contributor.authorVasisht, G
dc.contributor.authorVeicht, A
dc.contributor.authorWang, J
dc.contributor.authorZhai, C
dc.contributor.authorZimmerman, NT
dc.contributor.orcidCrepp, J [0000-0003-0800-0593]
dc.contributor.orcidCady, E [0000-0002-8789-2931]
dc.contributor.orcidNilsson, R [0000-0002-5408-4954]
dc.contributor.orcidOppenheimer, R [0000-0001-7130-7681]
dc.contributor.orcidRice, EL [0000-0002-3252-5886]
dc.contributor.orcidSoummer, R [0000-0003-2753-2819]
dc.date.accessioned2018-10-10T10:45:31Z
dc.date.available2018-10-10T10:45:31Z
dc.date.issued2016
dc.description.abstract<jats:title>ABSTRACT</jats:title> <jats:p> <jats:italic>μ</jats:italic> Her is a nearby quadruple system with a G-subgiant primary and several low-mass companions arranged in a 2+2 architecture. While the BC components have been well characterized, the Ab component has been detected astrometrically and with direct imaging but there has been some confusion over its nature, in particular, whether the companion is stellar or substellar. Using near-infrared spectroscopy, we are able to estimate the spectral type of the companion as an M4±1V star. In addition, we have measured the astrometry of the system for over a decade. We combined the astrometry with archival radial velocity measurements to compute an orbit of the system. From the combined orbit, we are able to compute the mass sum of the system. Using the estimated mass of the primary, we estimate the mass of the secondary as 0.32 <jats:inline-formula> <jats:tex-math> <?CDATA ${M}_{\odot }$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>M</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>⊙</mml:mo> </mml:mrow> </mml:msub> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="aj523684ieqn1.gif" xlink:type="simple" /> </jats:inline-formula>, which agrees with the estimated spectral type. Our computed orbit is preliminary due to the incomplete orbital phase coverage, but it should be sufficient to predict ephemerides over the next decade.</jats:p>
dc.identifier.doi10.17863/CAM.30910
dc.identifier.eissn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/283547
dc.language.isoeng
dc.publisherAmerican Astronomical Society
dc.publisher.urlhttp://dx.doi.org/10.3847/0004-6256/151/6/169
dc.subjectbinaries: visual
dc.subjectinstrumentation: adaptive optics
dc.subjectstars: individual (HD 161797)
dc.subjectstars: solar-type
dc.titleCHARACTERIZATION of the COMPANION μ HER
dc.typeArticle
dcterms.dateAccepted2016-04-20
prism.issueIdentifier6
prism.publicationDate2016
prism.publicationNameAstronomical Journal
prism.volume151
pubs.funder-project-idScience and Technology Facilities Council (ST/N000927/1)
rioxxterms.licenseref.startdate2016-06-01
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.3847/0004-6256/151/6/169

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
mu-Her-1604.06494.pdf
Size:
245.72 KB
Format:
Adobe Portable Document Format
Description:
Accepted version
Licence
http://www.rioxx.net/licenses/all-rights-reserved
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
DepositLicenceAgreement.pdf
Size:
417.78 KB
Format:
Adobe Portable Document Format
Download

Collections

Cambridge University Research Outputs