IRAS 04238+5336: A Young Reflection Nebula Surrounding a Double Star
Abstract
IRAS 04238 + 5336P03 is identified with a 17th-magnitude compact nebulous object which contains a 1.6-arcsec double star. About 99 percent of the 450 solar luminosities luminosity of the source is radiated longward of 1 micron. The source displays an A-type visible spectrum, strong molecular hydrogen emission lines at 2.4 microns, and a dust emission feature at 3.3 microns. It lies within a small molecular cloud. The object is one of the first clear examples of a binary system young enough to be still interacting with the interstellar cloud out of which it formed. The infrared source is highly extended at 10 microns (about six arcsecs); it is one of the few examples of a 10 microns source that shows extended emission without a distributed heating mechanism. The results are explained by a population of very small particles that are temporarily heated to high temperatures.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- May 1986
- DOI:
- 10.1086/164175
- Bibcode:
- 1986ApJ...304..409W
- Keywords:
-
- Binary Stars;
- Infrared Astronomy;
- Reflection Nebulae;
- Stellar Envelopes;
- Charge Coupled Devices;
- Interstellar Extinction;
- Point Sources;
- Pre-Main Sequence Stars;
- Stellar Color;
- Stellar Spectrophotometry;
- Visible Spectrum;
- Astronomy;
- INFRARED: SOURCES;
- NEBULAE: REFLECTION;
- STARS: PRE--MAIN-SEQUENCE