scholarly journals Spectral analysis of PG 1034+001, the exciting star of Hewett 1

2011 ◽  
Vol 7 (S283) ◽  
pp. 426-427 ◽  
Author(s):  
Marin Mahsereci ◽  
Ellen Ringat ◽  
Thomas Rauch ◽  
Klaus Werner ◽  
Jeffrey W. Kruk

AbstractPG 1034+001 is an extremely hot, helium-rich DO-type star that excites the planetary nebula Hewett 1 and large parts of the surrounding interstellar medium. We present preliminary results of an ongoing spectral analysis by means of non-LTE model atmospheres that consider most elements from hydrogen to nickel. This analysis is based on high-resolution ultraviolet (FUSE, IUE) and optical (VLT/UVES, Keck) data. The results are compared with those of PG 1034+001's spectroscopic twin, the DO star PG 0038+199.

1997 ◽  
Vol 482 (2) ◽  
pp. 891-896 ◽  
Author(s):  
You‐Hua Chu ◽  
Thomas H. Chang ◽  
Gail M. Conway

2011 ◽  
Vol 7 (S283) ◽  
pp. 458-459
Author(s):  
Jun-ichi Nakashima ◽  
Sun Kwok ◽  
Bosco H. K. Yung ◽  
Yong Zhang ◽  
Nico Koning ◽  
...  

AbstractWe obtained a high-resolution CO map of IRAS 22272+5435 in the CO J = 2–1 line using CARMA. The target exhibits a second biggest angular size of the circumstellar molecular envelope among known 21 μm sources. In the preliminary results, we found that the CO properties of IRAS 22272+5435 is clearly different from those of IRAS 07134+1005, which is another well-investigated 21 μm source. For example, elongations seen in the mid-infrared and CO images are extended in mutually perpendicular directions, although in case of IRAS 07134+1005 the CO feature coincides well with the mid-infrared structure.


1971 ◽  
Vol 1 (4) ◽  
pp. 466-473 ◽  
Author(s):  
B. R. Bean ◽  
R. E. McGavin ◽  
R. B. Chadwick ◽  
B. D. Warner

1998 ◽  
Author(s):  
Eugen N. Scarlat ◽  
Liliana Preda ◽  
Constantin P. Cristescu ◽  
Alexandru M. Preda

1986 ◽  
Vol 48 (11-12) ◽  
pp. 1269-1278 ◽  
Author(s):  
Shoichiro Fukao ◽  
Toru Sato ◽  
Toshitaka Tsuda ◽  
Mamoru Yamamoto ◽  
Susumu Kato

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