Extension of the coma of P/Halley

Goraya, P. S.; Sanwal, B. B.; Rautela, B. S.

doi:10.1007/bf00118045

Cited by 2 publications

(5 citation statements)

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“…Both profiles show a more rapid decrease with increasing distance from nucleus than in the case of CN. For C 3 this is in agreement with Goraya et al (1988), Hu et al (1988), andEllis &Neff (1992). The C 3 profile is only slightly steeper than the CH profile.…”

Section: Intensity and Column Density Profilessupporting

confidence: 90%

Spatial distribution of neutral and ionic constituents in comet P/Halley

Umbach

Jockers

Geyer

1998

Astron. Astrophys. Suppl. Ser.

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Abstract. Multislit spectra of comet P/Halley were obtained on April 10, 1986, using a focal reducer with a field of ≈ 0.5• angular diameter. The number and arrangement of the slits allowed a reconstruction of the spatial distribution of principal neutral and ionic coma constituents within a frame of about 4 10 5 × 4 10 5 km 2 at the comet. Radial profiles and two-dimensional maps for the dust continuum, CN, C 3 , CH, CO + , and especially CO + 2 , are presented in absolute intensity and column density units, respectively. Scale lengths and production rates for the radicals were determined within the Haser model. The molecular ions are not only restricted to the plasma tail but are also present in the sunward coma. Instead of forming a peak at the nucleus like the neutral radicals the ion column densities decrease rapidly in the solar direction and form a plateau extending from the nucleus into the antisolar direction. The distribution of CO + 2 shows a stronger decrease in the tailward direction than that of CO + .

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Section: Intensity and Column Density Profilessupporting

confidence: 90%

Spatial distribution of neutral and ionic constituents in comet P/Halley

Umbach

Jockers

Geyer

1998

Astron. Astrophys. Suppl. Ser.

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“…Printed in Ihe Netherlands. Observations were made with Hilger and Watts spectrum scanner (Goraya et al, 1982(Goraya et al, , 1984 at the Cassegrain focus (f/13) of the 104 cm reflector of the Nainital Observatory. The spectrum scanner gives a dispersion of 70 w mm-' in the first order.…”

Section: Observationsmentioning

confidence: 99%

“…A gross estimate of the total number of molecules of different species is made by using the well known relation (cf. O'Dell and Osterbrock, 1962) and recently adopted by many authors (Sivaraman et al, 1979, Goraya et al, 1982, 1984, 1986a:…”

Section: Number Of Cn and Cz Moleculesmentioning

confidence: 99%

“…The values of f, p and p(v, r) used in our calculations are adopted from Lambert (1978) and Goraya et al (1986a) and are listed in Table III alongwith the total number of molecules estimated by us.…”

Section: Number Of Cn and Cz Moleculesmentioning

confidence: 99%

“…4109,4113,4130). Goraya and Rautela (1985) and Goraya et al (1986b) were the first observers to report different emission features observed by them in comet Hartley-Good. They observed the emissions due to CN, CH, Cz, and C3 molecules in it. So far, no such other study has been reported in literature.…”

Section: Introductionmentioning

confidence: 99%

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