The most rapidly rotating He-strong emission line star: HR 7355

被引：0
|
作者：
Rivinius, T. [1 ]
Tefl, S. [1 ]
Townsend, R.H.D. [2 ]
Baade, D. [3 ]
机构：
[1] ESO, European Organisation for Astronomical Research in the Southern Hemisphere, Chile
[2] Bartol Research Institute, University of Delaware, Newark, DE 19716, United States
[3] ESO, European Organisation for Astronomical Research in the Southern Hemisphere, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
来源：
Astronomy and Astrophysics | 2008年 / 482卷 / 01期
关键词：
Aims. We searched for massive stars with Balmer emission consistent with magnetically confined circumstellar material.Methods. Archival spectroscopic and photometric data were investigated.Results. HR 7355 is a formerly unknown He-strong star showing Balmer emission. At mag; it is one of the brightest objects simultaneously showing anomalous helium absorption and hydrogen emission. Among similar objects; only Ori E has so far been subjected to any systematic analysis of the circumstellar material responsible for the emission. We argue that the double-wave photometric period of 0.52 d corresponds to the rotation period. In tandem with the high projected equatorial velocity; sin = 320 km s; this short period suggests that HR 7355 is the most rapidly rotating He-strong star known to date; a class that was hitherto expected to host stars with slow to moderate rotation only. © 2008 ESO;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：255 / 258
相关论文
共 37 条
  • [21] Magnetic field topology and chemical abundance distributions of the young, rapidly rotating, chemically peculiar star HR5624
    Kochukhov, O.
    Silvester, J.
    Bailey, J. D.
    Landstreet, J. D.
    Wade, G. A.
    ASTRONOMY & ASTROPHYSICS, 2017, 605
  • [22] THE MOST LUMINOUS SUPERNOVA ASASSN-15LH: SIGNATURE OF A NEWBORN RAPIDLY ROTATING STRANGE QUARK STAR
    Dai, Z. G.
    Wang, S. Q.
    Wang, J. S.
    Wang, L. J.
    Yu, Y. W.
    ASTROPHYSICAL JOURNAL, 2016, 817 (02):
  • [23] HE-LAMBDA-10830-A EMISSION-LINE IN O-STAR SPECTRA
    ANDRILLAT, Y
    VREUX, JM
    ASTRONOMY & ASTROPHYSICS, 1979, 76 (02) : 221 - 225
  • [24] THE NATURE OF THE BRIGHTEST GALACTIC-CENTER HE-I EMISSION-LINE STAR
    NAJARRO, F
    HILLIER, DJ
    KUDRITZKI, RP
    KRABBE, A
    GENZEL, R
    LUTZ, D
    DRAPATZ, S
    GEBALLE, TR
    ASTRONOMY & ASTROPHYSICS, 1994, 285 (02) : 573 - 584
  • [25] LUMINOSITY DEPENDENCE AND REDSHIFT EVOLUTION OF STRONG EMISSION-LINE DIAGNOSTICS IN STAR-FORMING GALAXIES
    Cowie, L. L.
    Barger, A. J.
    Songaila, A.
    ASTROPHYSICAL JOURNAL, 2016, 817 (01):
  • [26] THE VARIABLE SHELL STAR HR 5999 .6. STRONG CHROMOSPHERIC AND TRANSITION REGION EMISSION-LINES IN THE ULTRAVIOLET-SPECTRUM OF A HERBIG AE STAR
    DJIE, HRETA
    THE, PS
    HACK, M
    SELVELLI, PL
    ASTRONOMY & ASTROPHYSICS, 1982, 106 (01) : 98 - 104
  • [27] Unveiling hidden active nuclei in MaNGA star-forming galaxies with He II λ4686 line emission
    Tozzi, Giulia
    Maiolino, Roberto
    Cresci, Giovanni
    Piotrowska, Joanna M.
    Belfiore, Francesco
    Curti, Mirko
    Mannucci, Filippo
    Marconi, Alessandro
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 521 (01) : 1264 - 1276
  • [28] THE HE I LAMBDA-6678 EMISSION-LINE OF PHI PERSEI - NEW EVIDENCE OF THE COMPANION STAR
    GIES, DR
    WILLIS, CY
    PENNY, LR
    MCDAVID, D
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1993, 105 (685) : 281 - 286
  • [29] The production of strong, broad He II emission after the tidal disruption of a main-sequence star by a supermassive black hole
    Martin Gaskell, C.
    Rojas Lobos, P. Andrea
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 438 (01) : L36 - L40
  • [30] Line-profile tomography of exoplanet transits - II. A gas-giant planet transiting a rapidly rotating A5 star☆
    Cameron, A. Collier
    Guenther, E.
    Smalley, B.
    McDonald, I.
    Hebb, L.
    Andersen, J.
    Augusteijn, Th.
    Barros, S. C. C.
    Brown, D. J. A.
    Cochran, W. D.
    Endl, M.
    Fossey, S. J.
    Hartmann, M.
    Maxted, P. F. L.
    Pollacco, D.
    Skillen, I.
    Telting, J.
    Waldmann, I. P.
    West, R. G.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 407 (01) : 507 - 514
1234