HD 97048
Herbig Ae/Be star in the constellation Chamaleon / From Wikipedia, the free encyclopedia
HD 97048 or CU Chamaeleontis is a Herbig Ae/Be star 603 ly away in the constellation Chamaeleon. It is a variable star embedded in a dust cloud containing a stellar nursery, and is itself surrounded by a dust disk.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Chamaeleon |
Right ascension | 11h 08m 03.3106s[1] |
Declination | −77° 39′ 17.4912″[1] |
Apparent magnitude (V) | 8.38 - 8.48[2] |
Characteristics | |
Evolutionary stage | Herbig Ae/Be[3] |
Spectral type | A0Vep[4] |
Variable type | INA[2] |
Astrometry | |
Radial velocity (Rv) | 34.00±2.5[5] km/s |
Proper motion (μ) | RA: −22.437±0.061[1] mas/yr Dec.: 1.305±0.059[1] mas/yr |
Parallax (π) | 5.4105 ± 0.0388 mas[1] |
Distance | 603 ± 4 ly (185 ± 1 pc) |
Absolute magnitude (MV) | +2.47[6] |
Details | |
Mass | 2.5[3] M☉ |
Radius | 1.7[7] R☉ |
Luminosity | 33[7] L☉ |
Surface gravity (log g) | 4.30[7] cgs |
Temperature | 10,500[7] K |
Age | 3[3] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 97048 is a young star still contracting towards the main sequence. Its brightness varies between magnitudes 8.38 and 8.48 and it is classified as an Orion variable.[2] It was given the variable star designation CU Chamaeleontis in 1981.[9] Its spectrum is also variable. The spectral class is usually given as A0 or B9, sometimes with a giant luminosity class, sometimes main sequence. The spectrum shows strong variable emission lines indicative of a shell surrounding the star.[10]
HD 97048 is a member of the Chamaeleon T1 stellar association and is still embedded within the dark molecular cloud that it is forming from. It illuminates a small reflection nebula against the dark cloud.[11]