| Issue |
A&A
Volume 388, Number 3, June IV 2002
|
|
|---|---|---|
| Page(s) | 861 - 867 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20020562 | |
| Published online | 10 June 2002 | |
V39: An unusual object in the field of IC 1613*
1
Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate, Italy
2
Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monteporzio Catone, Italy
Corresponding author: L. Mantegazza, luciano@merate.mi.astro.it
Received:
6
March
2002
Accepted:
8
April
2002
The variable star V39 in the field of IC 1613 is discussed in the light of the available photometric and new spectroscopic data. It has strong emission Balmer lines, and the observed characteristics could be explained by a W Vir pulsating star with a period of 14.341 d, located at more than 115 kpc, that is in the very outer halo of our Galaxy. It should have an apparent companion, a long period (1118 d) red variable, belonging to IC 1613. The main uncertainty in this interpretation is an emission feature at 6684 Å, which we tentatively identified as a He I line.
Key words: stars: emission-line, Be / stars: variables: general / Galaxy: halo / Galaxy: structure
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.