The young dusty HII region Sh 2-148 is ionised by uncatalogued O8 V and B2 V stars according to Pismis.
Avedisova combines Sh 2-147, Sh 2-148 and Sh 2-149 into the star formation region SFR 108.27-1.07
, which is ionised by two uncatalogued O8 V and B0 V stars and includes the star cluster King 10
and the young stellar object 2MASX J22555978+5814424
Sh 2-147, Sh 2-148, and Sh 2-149 form one of the two cores of the 105 thousand solar mass molecular cloud [UUT2000] Cloud A
. (The other core is associated with Sh 2-152 and Sh 2-153.) This molecular cloud may be interacting with the supernova remnant SNR G109.1-01.0
The molecular cloud can be seen in this MSX infrared image
. The same field at radio frequencies
reveals the supernova remnant.
The young dusty HII region Sh 2-148 is ionised by uncatalogued O8 V and B2 V stars at 5800 parsecs.[1
Sh 2-147, Sh 2-148, Sh 2-149 form one of the two cores of the 105 thousand solar mass molecular cloud [UUT2000] Cloud A.[2
Sh 2-147, Sh 2-148, Sh 2-149, Sh 2-152 and Sh 2-153 are all parts of the same giant molecular cloud located at a distance of about 4500 pc.[3
Note that Russeil gives a distance estimate of 2390 +/- 210 pc for Sh 2-152 and Sh 2-153. [4
] This suggests that the cloud may be much closer than the roughly 4500 pc estimates typically given for the Sh 2-147 to Sh 2-149 complex and perhaps this complex is also located at the nearer distance.
1. ^ Pismis, Paris & Mampaso, Antonio (1991). "Infrared studies of H II regions
- The Sharpless regions S148, 184, 198, 206 and 269", Monthly Notices of
the Royal Astronomical Society, Vol. 249, 385-403. [1991MNRAS.249..385P]
2. ^ Ungerechts, H., Umbanhowar, P., & Thaddeus, P. (2000). "A CO Survey of
Giant Molecular Clouds near Cassiopeia A and NGC 7538", The Astrophysical
Journal, Vol. 537, 221-235. [2000ApJ...537..221U]
3. ^ Kahane, C., Guilloteau, S., & Lucas, R. (1985). "A multiline study of a
typical giant molecular cloud - S 147/S 153", Astronomy and Astrophysics,
Vol. 146, 325-336. [1985A&A...146..325K]
4. ^ Russeil, D., Adami, C., & Georgelin, Y. M. (2007). "Revised distances of
Northern HII regions", Astronomy and Astrophysics, Vol. 470, 161-171.