WR 137
Observer: LHAA
Spectrum Data
FITS Header Metadata
Show FITS Header
| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 2749 |
| CRPIX1 | 1 |
| CDELT1 | 1.453521239879 |
| CRVAL1 | 3797.82177734375 |
| CTYPE1 | Wavelength |
| CUNIT1 | Angstrom |
| SWCREATE | RSpec 2.1.1.18 |
| VERSION | RSpec 2.1.1.18 |
| OBSERVER | HLAD |
| BSS_SITE | Sandvreten Observatory L11 |
| BSS_INST | T41 |
| OBJNAME | WR 137 |
| DATE-OBS | 2025-12-20T18:54:40 |
| EXPTIME | 900 |
| BSS_VHEL | 0 |
FITS Spectral Image
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Calibrated Spectrum
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Observation Image
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Metadata
| Field | Value |
|---|---|
| Object Name | WR 137 |
| Observer | LHAA |
| Site | Legacy Site (update me) |
| Equipment | Legacy Equipment (update me) |
| Observation Date | 2026-01-18 11:24 |
| Julian Date | 2461058.97556 |
| Created | 2026-01-18 11:24 |
| Updated | 2026-01-18 11:26 |
Notes
From Wikipedia: WR 137 (HD 192641, V1042 Cyg) is a fascinating Wolf-Rayet binary star system in the constellation Cygnus, known as a prolific cosmic dust factory that periodically brightens as it creates dust in its powerful stellar winds, especially around its 13-year orbital close approach (periastron) with its massive O-type companion star. This WC7+O9V system features intense winds from the central Wolf-Rayet (WC7) star colliding with material from its companion, forming dust clouds that absorb and re-emit light in the infrared. Key Characteristics: Type: A Wolf-Rayet binary (WC7+O9V). Location: In the constellation Cygnus, about 6,000 light-years away. Dust Production: Creates significant dust, causing infrared brightening every 13 years as the stars get close. Orbit: A long 13.1-year period, with a nearly edge-on orbit, allowing us to see the dust formation in its orbital plane. Components: A hot, massive Wolf-Rayet star (WC7) and a fast-rotating O-type star.