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| Query : 2004A&A...421L...1C |
2004A&A...421L...1C - Astronomy and Astrophysics, volume 421L1-4 (2004/7-1)
The CaII infrared triplet as indicator of anomalous Ca isotopic mixture in HgMn stars.
CASTELLI F. and HUBRIG S.
Abstract (from CDS):
For the first time we present observational evidence for an anomalous isotopic structure of CaII in mercury-manganese (HgMn) stars. The centroid wavelengths of CaII infrared triplet lines in a number of stars have been found redshifted with respect to the centroids of the terrestrial CaII lines. The record holder is the star HD 175640 for which the measured wavelength is consistent with CaII being present in the atmosphere entirely in form of the heaviest stable isotope 48Ca. This is a very striking result as 48Ca makes up only 0.187% of the terrestrial Ca mixture.
Abstract Copyright: ∼
Journal keyword(s): stars: abundances - stars: atmospheres - stars: chemically peculiar - stars: atomic data - stars
Simbad objects: 12
| Number of rows : 12 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | V* AV Scl | a2* | 00 23 12.6093196608 | -31 02 08.778859512 | 6.24 | 6.484 | 6.547 | B9IV | 105 | 0 | ||
| 2 | * O Vel | PM* | 09 43 42.2345011896 | -53 53 28.614477444 | 5.504 | 5.544 | A0IV | 52 | 0 | |||
| 3 | HD 101189 | PM* | 11 38 07.2695736768 | -61 49 35.512404852 | 4.96 | 5.13 | 5.14 | ApHgMn | 85 | 0 | ||
| 4 | HD 124740 | * | 14 16 24.3390568008 | -41 13 59.652192144 | 7.83 | 7.84 | A(pSiCr) | 26 | 0 | |||
| 5 | * n Her | * | 16 32 35.6854246680 | +05 31 16.391769564 | 5.39 | 5.57 | 5.63 | B9.5III | 126 | 0 | ||
| 6 | HD 158704 | SB* | 17 31 44.3739544896 | -26 16 10.957302300 | 5.983 | 6.052 | B9pHgMn | 79 | 0 | |||
| 7 | HD 165493 | * | 18 08 30.1115839488 | -45 46 01.234303212 | 6.061 | 6.163 | B7/8II | 41 | 0 | |||
| 8 | HD 175640 | * | 18 56 22.6598858520 | -01 47 59.503936200 | 5.86 | 6.149 | 6.196 | B9IIIpHgMnEu | 160 | 0 | ||
| 9 | HD 178065 | SB* | 19 07 09.0293341368 | +00 38 27.491355672 | 6.31 | 6.584 | 6.538 | B9III | 103 | 0 | ||
| 10 | * 46 Aql | * | 19 42 12.8123363760 | +12 11 35.740659732 | 6.234 | 6.321 | B9III | 120 | 0 | |||
| 11 | HD 196426 | * | 20 37 18.3814212168 | +00 05 49.053778404 | 5.73 | 6.112 | 6.211 | B8IIIpec | 94 | 0 | ||
| 12 | * bet Scl | PM* | 23 32 58.2607029954 | -37 49 05.825575113 | 3.92 | 4.28 | 4.37 | 4.37 | 4.44 | B9.5IIIpHgMnSi | 194 | 0 |
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