University of Hertfordshire Research Archive

        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of UHRABy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

        Arkivum Files

        My Downloads
        View Item 
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item

        A radial velocity study of the companion to the central star of Abell 35

        Author
        Gatti, A.A.
        Drew, J.E.
        Lumsden, S.
        Marsh, T.R.
        Moran, C.
        Stetson, P.
        Attention
        2299/4037
        Abstract
        We report the results of a radial velocity study of BD - 22.3467 deg (LW Hya), the cool companion to the subdwarf central star of the planetary nebula Abell 35. Estimates for its radial velocity have been obtained by cross correlation with radial velocity standards for five epochs of observations sampling periods of the order of days and decades. We find that any radial velocity variation of BD - 22.3467 deg on periods shorter than 30 d cannot possess a semi-amplitude greater than 5 km/s. Also, with the exception of a limited number of possible periods not covered by our sampling frequency, we can exclude radial velocity variations of semi-amplitude larger than about 8 km/s up to periods of approximately 30 yr. On the other hand, short-period, small-semi-amplitude about 5 km/s) radial velocity variations have been observed in the blue spectral region and possibly, with a smaller semi-amplitude (about 2 km/s), in the red. The photometric period of 0.766 +/- 0.001 d, which has been associated with the rotation of the star, is consistent with them, although other periods cannot yet be ruled out.
        Publication date
        1997
        Published in
        Monthly Notices of the Royal Astronomical Society
        Other links
        http://hdl.handle.net/2299/4037
        Metadata
        Show full item record
        Keep in touch

        © 2019 University of Hertfordshire

        I want to...

        • Apply for a course
        • Download a Prospectus
        • Find a job at the University
        • Make a complaint
        • Contact the Press Office

        Go to...

        • Accommodation booking
        • Your student record
        • Bayfordbury
        • KASPAR
        • UH Arts

        The small print

        • Terms of use
        • Privacy and cookies
        • Criminal Finances Act 2017
        • Modern Slavery Act 2015
        • Sitemap

        Find/Contact us

        • T: +44 (0)1707 284000
        • E: ask@herts.ac.uk
        • Where to find us
        • Parking
        • hr
        • qaa
        • stonewall
        • AMBA
        • ECU Race Charter
        • disability confident
        • AthenaSwan