1998A&A...337..141V


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.09CEST17:22:39

1998A&A...337..141V - Astronomy and Astrophysics, volume 337, 141-144 (1998/9-1)

Discovery of H2O maser emission from the red supergiant IRAS 04553-6825 in the Large Magellanic Cloud.

VAN LOON J.T., TE LINTEL HEKKERT P., BUJARRABAL V., ZIJLSTRA A.A. and NYMAN L.-A.

Abstract (from CDS):

We report the detection of 22GHz H2O maser emission from the red supergiant IRAS 04553-6825 in the Large Magellanic Cloud. It is the first known source of circumstellar H2O maser emission outside the Milky Way. The measured flux density is comparable to that expected from scaling the galactic red supergiant NML Cyg. The peak velocity agrees with the SiO maser peak velocity. A near-infrared spectrum indicates that IRAS 04553-6825 has a typical LMC metallicity. We argue that, possibly as a result of the low metallicity, the H2O emission probably occurs near or within the dust formation radius, rather than further out as appears to be the case in NML Cyg and galactic OH/IR stars.

Abstract Copyright:

Journal keyword(s): masers - circumstellar matter - stars: late-type - stars: mass-loss - supergiants - Magellanic Clouds

Status at CDS:  

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 WOH G 64 Mi* 04 55 10.5252313969 -68 20 29.998470169     18.46 15.69 12.795 M7.5 78 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14637 1
3 NML Cyg s*r 20 46 25.5382179476 +40 06 59.396202678   18.64 16.60     M7/8 481 0

    Equat.    Gal    SGal    Ecl

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2020.04.09-17:22:39

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