Multi-frequency Variations in the Be star ζ Ophiuchi
نویسندگان
چکیده
منابع مشابه
Molecular emission from the diffuse gas around ζ Ophiuchi
Wehavemappedλ18cmOH andλ9cmCH emission from the diffuse gas around ζ Oph, and find no trace of emission from the +4.5 km s−1 gas whose OH line was previously believed to represent pre-shock gas. The pattern of OH emission is strikingly dissimilar to those of CO, HCO+ and CH in that the strong +1 km s−1 component seen to the South is largely absent in OH. CH more closely resembles CO, peaking on...
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We have made a sensitive search for the origin bands in the known electronic transitions of the linear carbon chains C4 and C5 at 3789 and 5109 Å towards ζ Oph (AV ≤1). The incentive was a recent detection of C3 in this interstellar cloud with a column density of 1.6×10 cm plus the availability of laboratory gas phase spectra of C4 and C5. Further, some models of diffuse interstellar clouds pre...
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Aims. 51 Oph is one of the few young Be stars displaying a strong CO overtone emission at 2.3 microns in addition to the near infrared excess commonly observed in this type of stars. In this paper we first aim to locate the CO bandheads emitting region. Then, we compare its position with respect to the region emitting the near infrared continuum. Methods. We have observed 51 Oph with AMBER in l...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 2000
ISSN: 0252-9211
DOI: 10.1017/s0252921100056001