Abstract
The numerous extragalactic and cosmological motivations of the DENIS and 2MASS near infrared surveys are outlined. The performance of the DENIS survey is estimated from 50 deg2 of high galactic latitude data (20° < |b| < 60°). Simple star/galaxy separation methods are presented and comparison with 300 visually classified objects as well as COSMOS and APM classifications. We find that the peak intensity over isophotal area is an excellent star/galaxy separation algorithm, fairly robust to variations of the PSF within the frames, achieving 98.5% completeness and 92.5% reliability for I < 16.5, in comparison with visual classification. A new estimate of the photometric accuracy for galaxies is presented. The limiting factors for homogeneous galaxy extraction at high galactic latitudes are completeness and photometric accuracy in K, photometric accuracy in J and star/galaxy separation in I (also used for classification in J and K).Galaxy counts are presented on 50 deg2. The I counts are in excellent agreement with a Euclidean extrapolation of the published counts around I = 16–17 (more so than in all previous studies), and thus point to a high normalization at the bright end, in contrast with the counts published from the APM and COSMOS plate scans. The J-band differential galaxy counts follow the relation N(J) = 12 ± 1 dex(0.6 [J - 14]) deg-2mag-1. Extrapolation of these high latitude counts suggest that DENIS will produce highly homogeneous catalogs of ≃ 6000 (K < 11), ≃ 700 000 (J < 14.8) and, ≃ 1 000 000 (I < 16.5) galaxies, respectively with photometric accuracy of 0.08m in I and 0.20m in J and K. Larger highly homogeneous samples are expected with improvements to the camera and the algorithms.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Baugh C.M. & Efstathiou G. (1993) MNRAS, Vol. no. 265, pp. 145–332
Baugh C.M. & Efstathiou G. (1994) MNRAS, Vol. no. 267, pp. 323–332
Bertin E. (1996) PhD thesis, University of Paris 6
Bertin E. & Arnouts S. (1996) A&AS, Vol. no. 117, pp. 398–404
Bertin E. & Dennefeld M. (1997) A&A, Vol. no. 317, pp. 43–53
Borsenberger J. (1997) in The Impact of Large-Scale Near-IR Surveys, eds F. Garzón et al., Kluwer, pp. 181–186
Burstein D. & Heiles C. (1982) AJ, Vol. no. 87, pp. 1165–1189
Dalton G.B., Maddox S.J., Sutherland W.J. & Efstathiou G. (1997) MNRAS, Vol. no. 289, pp. 263–284
Epchtein N. et al. (48 authors) (1997) ESO Messenger, Vol. no. 87, pp. 27–34
Escalera E. & MacGillivray H.T. (1995) A&A, Vol. no. 298, pp. 1–21
Escalera E. & MacGillivray H.T. (1996) A&AS, Vol. no. 117, pp. 519–555
Gardner J.P., Sharples R.M., Carrasco B.E. & Frenk C.S. (1996) MNRAS, Vol. no. 282, pp. L1–L6
Heydon-Dumbleton N.H., Collins C.A. & MacGillivray H.T. (1989) MNRAS, Vol. no. 238, pp. 379–406
Kolatt T., Dekel A. & Lahav, O. (1995) MNRAS, Vol. no. 275, pp. 797–811
Kraan-Korteweg R.C., Woudt P.A., Cayatte V., Fairall A.P., Balkowski C. & Henning P.A. (1995) Nature, Vol. no. 379, pp. 519–521
Kron R.G. (1980) ApJS, Vol. no. 43, pp. 305–325
Lidman C.E. & Peterson B.A. (1996) MNRAS, Vol. no. 279, pp. 1357–1379
Lumsden S.L., Nichol R.C., Collins C.A. & Guzzo L. (1992) MNRAS, Vol. no. 258, pp. 1–22
Maddox S.J., Sutherland W.J., Efstathiou G., Loveday J. & Peterson B.A. (1990) MNRAS, Vol. no. 247, pp. 1P–5P
Mamon G.A. (1994) Astrophys. & Sp. Sei., Vol. no. 217, pp. 237–242
Mamon G.A. (1996) in Dark Matter in Cosmology, Quantum Measurements, Experimental Gravitation, eds. R. Ansari, Y. Giraud-Héraud & J. Trân Thanh Vân, Frontières, pp. 225–232 (astro-ph/9608076)
Mamon G.A., Banchet V., Tricottet M. & Katz D. (1997a) in The Impact of Large-Scale Near-IR Surveys eds. F. Garzón et al., Kluwer, pp. 239–248 (astro-ph/9608077)
Mamon G.A., Tricottet, M., Bonin, W. & Banchet, V. (1997b) in Extragalactic Astronomy in the Infrared, eds. G.A. Mamon, T.X. Thuan & J. Trân Thanh Vân, Frontières, pp. 369–380 (astro-ph/9711281)
Monet D. (1997) Bull. A.A.S., Vol. no. 188, 54.04
Prandoni I., Iovino A. & MacGillivray H.T. (1994) AJ, Vol. no. 107, pp. 1235–1244
Saunders W. et al. (15 authors) (1997), in Extragalactic Astronomy in the Infrared, eds. G.A. Mamon, T.X. Thuan & J. Trân Thanh Vân, Frontières, pp. 415–424
Schröder A., Kraan-Korteweg R.C., Mamon G.A. & Ruphy S., (1997) in Extragalactic Astronomy in the Infrared,eds. G.A. Mamon, T.X. Thuan & J. Trân Thanh Vân, Frontières, pp. 381–386 (astro-ph/9706093)
Vaughn I., Paturel G., Marthinet M.C., Petit C. & Borsenberger J. in Extragalactic Astronomy in the Infrared, eds. G.A. Maroon, T.X. Thuan & J. Trân Thanh Vân, Frontières, pp. 387–392
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Mamon, G.A., Borsenberger, J., Tricottet, M., Banchet, V. (1998). Galaxies with DENIS. In: Epchtein, N. (eds) The Impact of Near-Infrared Sky Surveys on Galactic and Extragalactic Astronomy. Astrophysics and Space Science Library, vol 230. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5026-2_23
Download citation
DOI: https://doi.org/10.1007/978-94-011-5026-2_23
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6110-0
Online ISBN: 978-94-011-5026-2
eBook Packages: Springer Book Archive