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| Query : 1998ApJ...497..227I |
1998ApJ...497..227I - Astrophys. J., 497, 227-237 (1998/April-2)
Reexamining the helium abundance of I Zw 18.
IZOTOV Y.I. and THUAN T.X.
Abstract (from CDS):
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Abundances - Galaxies: Compact - Galaxies: Individual Alphanumeric: I Zw 18 - Galaxies: ISM
Simbad objects: 4
| Number of rows : 4 |
| 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 | SBSG 0335-052 | AGN | 03 37 44.06 | -05 02 40.2 | 16.65 | ~ | 500 | 1 | ||||
| 2 | Mrk 116 | AGN | 09 34 02.1 | +55 14 25 | ~ | 1179 | 1 | |||||
| 3 | SBSG 0940+544N | G | 09 44 16.70 | +54 11 33.0 | ~ | 28 | 0 | |||||
| 4 | LEDA 2815986 | AG? | 12 02 02.4750603336 | +54 15 51.049196784 | 18.0 | ~ | 77 | 0 |
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