NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T08:04:33 PDT
Help | Comment | NED Home

For refcode 2003AJ....125.3037D:
Retrieve 2 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2003AJ....125.3037D Carbon Star Survey in the Local Group. VI. The Dwarf Spheroidal Galaxy NGC 205 Demers, Serge; Battinelli, Paolo; Letarte, Bruno Abstract. We present a CFH12K survey of the carbon stars in NGC 205 and its surrounding field. We find that the number of C stars in NGC 205 is low (~500) for its luminosity and that very few C stars are seen outside of the 10' isophote, suggesting tidal stripping by M31. Their <M_I_>=-4.54, a magnitude nearly identical to what has been found in other galaxies with numerous C stars. Stars with accurate (R-I) photometry, to I~22.5, are used to determine the outer profile of NGC 205. A King profile with r_t_=19.77'+/-3.00' fits the data for distances larger than 7'. This r_t_ implies that NGC 205 reached a minimum distance to M31 of ~42 kpc. The spatial distribution of C stars in the surrounding field reveals that some C stars belong to to the disk of M31, seen in projection, and that a surplus of C stars seen west of NGC 205 could be part of tidal debris left along its orbit. Finally, we report evidence of a transient period of enhanced star formation that occurred 1-2 Gyr ago in the northwest half of NGC 205. Keywords: Galaxies: Individual: NGC Number: NGC 205, Galaxies: Stellar Content, Galaxies: Structure, Stars: Carbon
Retrieve 2 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home