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| Query : 1999A&A...349..532S |
1999A&A...349..532S - Astronomy and Astrophysics, volume 349532-536 (1999/9-2)
Light variations of the blue hypergiants HD 168607 and HD 168625 (1973-1999).
STERKEN C., ARENTOFT T., DUERBECK H.W. and BROGT E.
Abstract (from CDS):
Stroemgren differential photometry of HD 168607 and HD 168625 collected during the previous 27 years is analysed. We bring to an end our quarter of a century monitoring of these objects and conclude that HD1 68607 shows typical variability of an uneventful LBV, whereas HD 168625 remains to be classified as a variable hypergiant, or a marginally-dormant LBV. The long-term light- and colour behaviour of HD 168607 indicates the possible presence of a very slowly-developing S Dor phase - that is, a bright phase that coincides with redder colours. Besides the α Cygni-type microvariability, no other signs of ultrashort-periodic variability has been observed.
Abstract Copyright: ∼
Journal keyword(s): stars: early-type - stars: individual: HD 168607 - stars: individual: HD 168625 - stars: oscillations - stars: variables: general
Simbad objects: 10
| Number of rows : 10 |
| 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 | HD 5980 | WR* | 00 59 26.5838833944 | -72 09 53.927337312 | 11.13 | 11.31 | 11.029 | WN4+O7I: | 419 | 1 | ||
| 2 | HD 6884 | s*b | 01 07 18.2182685856 | -72 28 03.657105156 | 10.32 | 10.2 | B9Ia0ek | 134 | 0 | |||
| 3 | HD 269006 | s*b | 05 02 07.3942092168 | -71 20 13.116800076 | 9.93 | 10.60 | 10.55 | 10.43 | 10.38 | LBV | 261 | 0 |
| 4 | V* AG Car | WR* | 10 56 11.5781414448 | -60 27 12.810673260 | 7.00 | 7.57 | 6.96 | 7.73 | WN11h | 649 | 0 | |
| 5 | HD 160529 | s*b | 17 41 59.0261939376 | -33 30 13.704456780 | 8.17 | 7.87 | 6.66 | 5.50 | 4.51 | B8-A9Ia+ | 203 | 1 |
| 6 | HD 168552 | * | 18 21 00.2961308376 | -17 09 06.148046340 | 7.89 | 8.37 | 8.13 | 8.01 | 8.92 | B2/3Ib/II | 54 | 0 |
| 7 | HD 168607 | s*b | 18 21 14.8856951904 | -16 22 31.763755236 | 10.23 | 9.82 | 8.28 | 8.55 | B9Ia+ | 196 | 1 | |
| 8 | HD 168625 | s*b | 18 21 19.5484021368 | -16 22 26.075142156 | 10.15 | 9.78 | 8.37 | 8.76 | B8Ia+ | 293 | 2 | |
| 9 | HD 168663 | * | 18 21 40.9920312768 | -18 31 07.481821152 | 9.39 | 8.98 | F0V | 11 | 0 | |||
| 10 | HD 168896 | * | 18 22 50.0141708808 | -16 55 31.758455028 | 8.69 | 8.47 | A3III | 16 | 0 |
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