Published studies:
Jiang, B.W., et al. 1996 (ApJS, 106, 463). No Si-maser detection.
Jiang, B.W., et al. 1996 (AJ, 111, 231). No optical identification.
Jiang, B.W., et al. 1997 (AJ, 113, 1315). Near-IR identification. Distance estimate - 5.5 kpc.
Finder chart: (a double source in the chart center; according to 2MASS, the object is the brighter, southernmost of the pair)
Spectral Energy Distribution (figure) (data)
Ha line profile (no data obtained yet)
Our data:
BVR photometry:
0.5-m telescope, Tien-Shan Observatory, Kazakhstan, 2 obs. 26 & 30 Nov. 2003. Faint and perhaps variable.
V=14: B-V=1.3: V-R = 2.5:
Spectroscopy:
1 spectrum obtained at the 3-m IRTF telescope at Mauna Kea (3-14 micron, R=100)
Catalog data:
2MASS
J=10.15, H=9.03, K=7.72, 1998/12/25 (Cutri et al. 2003, 2MASS All-Sky Catalog of Point Sources, CDS Catalog II/246)
J=11.31, H=10.13, K=8.69, 1995/11/8-12 (Jiang et al. 1997)
IRAS
| 12 micron | 25 micron | 60 micron | 100 micron | |
| Point Source Catalog | 4.20±0.38 Jy | 3.24±0.26 Jy | 0.80±0.06 Jy | no detection |
| SCANPI | 4.23±0.02 Jy | 3.29±0.02 Jy | 0.84±0.05 Jy | 0.95±0.24 Jy |
SCANPI is a co-addition of all one-dimensional scans through the location of the object (see Weaver, Wm.B. & Jones, G. 1992, ApJS, 78, 239).
The source is slightly extended at 100 micron. It is point-like in the other 3 bands with no other sources up to 10 arcmin.
MSX
ID: MSX6CG144.2735+03.0950
| A-band (8.28 micron) | C-band (12.13 micron) | D-band (14.65 micron) | E-band (21.34 micron) |
|
3.908±0.160 Jy |
4.011±0.225 Jy |
3.373±0.219 Jy |
2.556±0.202 Jy |
NSVS (Northern Sky Variability Survey at http://skydot.lanl.gov)
ID: 2082905 (another NSVS source 1973992 with a worse coverage may represent the same object)
Last updated: 2004 November 19
