Se p 20 07 The Araucaria Project . Near - Infrared Photometry of Cepheid Variables in the Sculptor Galaxy
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چکیده
We have obtained deep images in the near-infrared J and K filters of four fields in the Sculptor Group spiral galaxy NGC 55 with the ESO VLT and ISAAC camera. For 40 long-period Cepheid variables in these fields which were Based on observations obtained with the ESO VLT for Large Programme 171.D-0004
منابع مشابه
The Araucaria Project . Near - Infrared Photometry of Cepheid Variables in the Sculptor
We have obtained deep near-infrared images in J and K filters of three fields in the Sculptor galaxy NGC 300 with the ESO VLT and ISAAC camera. For 16 Cepheid variables in these fields, we have determined J and K magnitudes at two different epochs, and have derived their mean magnitudes in these bands. The slopes of the resulting period-luminosity relations are in very good agreement with the s...
متن کاملar X iv : a st ro - p h / 06 05 22 6 v 1 9 M ay 2 00 6 The Araucaria Project . A Wide - Field Photometric Survey for Cepheid Variables in NGC 3109
We have obtained mosaic images of NGC 3109 in the V and I bands on 74 nights, spanning approximately one year. From these data, we have conducted an extensive search for Cepheid variables over the entire field of the galaxy, resulting in the discovery of 113 variables with periods ranging from 3.4 to 31.4 days. In this sample, 76 Cepheids, including many long-period variables, were not known be...
متن کاملar X iv : a st ro - p h / 06 05 22 6 v 1 9 M ay 2 00 6 The Araucaria Project . A Wide - Field Photometric Survey for Cepheid Variables in NGC
We have obtained mosaic images of NGC 3109 in the V and I bands on 74 nights, spanning approximately one year. From these data, we have conducted an extensive search for Cepheid variables over the entire field of the galaxy, resulting in the discovery of 113 variables with periods ranging from 3.4 to 31.4 days. In this sample, 76 Cepheids, including many long-period variables, were not known be...
متن کاملProject . An improved distance to the Sculptor spiral galaxy NGC 300 from its Cepheid variables
In a previous paper, we reported on the discovery of more than a hundred new Cepheid variables in the Sculptor Group spiral NGC 300 from wide-field images taken in the B and V photometric bands at ESO/La Silla. In this paper, we present additional VI data, derive improved periods and mean magnitudes for the variables, and construct period-luminosity relations in the V, I and the reddening-indep...
متن کاملThe Araucaria Project: the Effect of Blending on the Cepheid Distance to Ngc 300 from Advanced Camera for Surveys Images1
We have used the Advanced Camera for Surveys aboard the Hubble Space Telescope to obtain F435W , F555W and F814W single-epoch images of six fields in the spiral galaxy NGC 300. Taking advantage of the superb spatial resolution of these images, we have tested the effect that blending of the Cepheid variables studied from the ground with close stellar neighbors, unresolved on the ground-based ima...
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تاریخ انتشار 2008