CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes

Bibcode
2001A&A...369..986U
DOI
10.1051/0004-6361:20010181
Ulla, A.; Zapatero Osorio, M. R.; Pérez Hernández, F.; MacDonald, J.
Bibliographical reference

Astronomy and Astrophysics, v.369, p.986-992 (2001)

Advertised on:
4
2001
Journal
Astronomy and Astrophysics
Number of authors
4
IAC number of authors
2
Citations
7
Refereed citations
6
Description
BVRI CCD-based and near-IR (J) imaging, together with unfiltered photometry of the hot subdwarf B star PG 0856+121, are reported. Two close, faint, red, point-like sources are resolved. They account for the previously reported IR excess observed in this hot subdwarf. In addition, the new unfiltered differential photometry of PG 0856+121 confirms its previously reported pulsational nature. A comparison with the oscillation modes of stellar models suggests the presence of g modes. Based on observations made with the IAC80 Telescope operated on the island of Tenerife by the Instituto de Astrofísica de Canarias in the Spanish Observatorio del Teide.
Type
Refereed

It may interest you

  • Refereed
    An ultra-short-period super-Earth with an extremely high density and an outer companion
    We present the discovery and characterization of a new multi-planetary system around the Sun-like star K2-360 (EPIC 201595106). K2-360 was first identified in K2 photometry as the host of an ultra-short-period (USP) planet candidate with a period of 0.88 d. We obtained follow-up transit photometry, confirming the star as the host of the signal
    Livingston, John H. et al.

    Advertised on:

    11
    2024
    Bibcode
    2024NatSR..1427219L
    Citations
    0
  • Refereed
    Dehydrogenation, polymerization and self-assembly in the inhibition of copper surfaces by an ultrathin imidazole film
    Here we present a joint experimental-theoretical study on the deposition of imidazole molecules on a Cu(100) surface. X-ray photoelectron spectroscopy (XPS) and Surface-enhanced Raman spectroscopy (SERS) have been carried out on samples prepared upon deposition of sublimated imidazole molecules in ultra-high vacuum (UHV). Computational studies
    Barzaga, R. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024Corro.23512168B
    Citations
    0
  • Refereed
    Constraints on VHE gamma-ray emission of flat spectrum radio quasars with the MAGIC telescopes
    Flat spectrum radio quasars (FSRQs) constitute a class of jetted active galaxies characterized by a very luminous accretion disc, prominent and rapidly moving line-emitting cloud structures (broad-line region, BLR), and a surrounding dense dust structure known as dusty torus. The intense radiation field of the accretion disc strongly determines the
    Abe, S. et al.

    Advertised on:

    12
    2024
    Bibcode
    2024MNRAS.535.1484A
    Citations
    0