DISTANCE TO THE FORNAX CLUSTER USING THE HUBBLE SPACE TELESCOPE: IMPLICATIONS FOR COSMOLOGY (2007)
Wendy L. Freedman, N. Silbermann, Paul Ha Rding, Jeremy R. Mould, ...
ABSTRACT Using the Hubble Space Telescope (HST), we have discovered Cepheid variables in the Fornax cluster spiral galaxy, NGC 1365. V and I period-luminosity relations for 37 Cepheids with periods...
Far-Infrared Spectroscopy Of Normal Galaxies With Iso-Lws (2007)
S. Malhotra, Malhotra Helou, D. Hollenbach, M. Kaufman, S. Lord, J. Brauher, ...
The deficiency of [CII] (158 ¯m) line emission in many normal and ultraluminous galaxies is one of the major surprises from ISO-LWS observations. We show that this is not an isolated phenomenon:...
Probing the Interstellar Medium in Early type galaxies with the ISO observations (2007)
Malhotra Hollenbach, S. Malhotra, D. Hollenbach, G. Helou, N. Silbermann, E. Valjavec, ...
Four IRAS-detected early type galaxies were observed with the Infrared Space Observatory. The mid-IR images of NGC 1052, NGC 1155, and NGC 6958 at 7 and 15 ¯m show extended emission which follows a...
OBSERVATIONS OF THE INTERSTELLAR MEDIUM IN ELLIPTICAL GALAXIES S. Malhotra (2007)
Hollenbach Helou, S. Malhotra, D. Hollenbach, G. Helou, E. Valjavec, D. Hunter, ...
Three IRAS-detected elliptical galaxies were observed with ISO-LWS and PHT, and two of them were observed with CAM. The midIR images of NGC 1155 and NGC 6958 at 7 and 15 ¯m show extended emission...
Hughes, S. M. G., Han, M., Hoessel, J., Saha, A., Silbermann, N., Stetson, P. B., ...
The distance to NGC 7331 has been derived from Cepheid variables observed with HST/WFPC2, as part of the Extragalactic Distance Scale Key Project. Multi-epoch exposures in F555W(~V) and F814W (~1),...
FIR-bright Galaxies with an Extreme [CII] Deficiency: Where are the PDRs? (2004)
Malhotra, S., Beichman, C. A., Dinerstein, H. L., Helou, G., Hollenbach, D. J., Hunter, D. A., ...
The HST Key Project on the Extragalactic Distance Scale XIV. The Cepheids in NGC 1365 (2004)
Silbermann, N., Harding, P., Ferrarese, L., Stetson, P. B., Madore, B. F., Kennicutt, R. C., ...
We report the detection of Cepheid variable stars in the barred spiral galaxy NGC 1365, located in the Fornax cluster, using the Hubble Space Telescope Wide Field and Planetary Camera 2. Twelve V...
A Cepheid Distance to NGC 4603 in the Centaurus Cluster (2004)
Madore, B., Newman, J., Zepf, S., Davis, M., Freedman, W., Madore, B., ...
In an attempt to use Cepheid variables to determine the distance to the Centaurus cluster, we have obtained images of NGC 4603 with the Hubble Space Telescope for 9 epochs (totalling 24 orbits) over...
Towards an Understanding of the Mid-Infrared Surface Brightness of Normal Galaxies (2004)
Dale, D., Helou, G., Silbermann, N., Contursi, A., Malhotra, S., Rubin, R.
We report a mid-infrared color and surface brightness analysis of IC 10, NGC 1313, and NGC 6946, three of the nearby galaxies studied under the Infrared Space Observatory Key Project on Normal...
Madore, B. F., Freedman, W. L., Silbermann, N., Harding, P., Huchra, J., Mould, J. R., ...
Using the Hubble Space Telescope (HST) thirty-seven long-period Cepheid variables have been discoverd in the Fornax Cluster spiral galaxy NGC 1365.
A Cepheid Distance to the Fornax Cluster and the Local Expansion Rate of the Universe (2004)
Madore, B. F., Freedman, W. L., Silbermann, N., Harding, P., Huchra, J., Mould, J. R., ...
The determination of an accurate value of the Hubble constant requires the measurement of accurate galaxy distances and velocities. Both the Virgo and Fornax clusters of galaxies are close enough to...
The mid-infrared spectra of normal galaxies. (2004)
Helou, G., Lu, N., Werner, M., Malhotra, S., Silbermann, N.
The mid-infrared spectra (2.5-5 and 5.7-11.6 mu m) obtained by ISOPHOT reveal the interstellar medium emission from galaxies powered by star formation to be strongly dominated by the aromatic...
The [CII] and [OI] Emission Lines in NGC1313 and NGC6946 (2004)
Contursi, A., Helou, G., Brauher, J., Dale, D., Dinerstein, H., Hollenbach, D., ...
The Infrared Spectral Energy Distribution of Normal Galaxies (2004)
Dale, D., Helou, G., Contursi, A., Silbermann, N., Kolhatker, S.
ISOCAM Observations of Normal Star-Forming Galaxies: The Key Project Sample (2004)
Dale, D., Silbermann, N., Helou, G., Valjavec, E., Malhotra, S., Beichman, C., ...
We present mid-infrared maps and preliminary analysis for 61 galaxies observed with the Infrared Space Observatory.
Malhotra, S., Hollenbach, D., Helou, D., Silbermann, N., Valjavec, E., Rubin, R., ...
Four IRAS-detected early-type galaxies were observed with the Infrared Space Observatory (ISO). With the exception of the 15 mu m image of NGC 1052, the mid-IR images of NGC 1052, NGC 1155, NGC 5866,...
Solar system observing with the Space Infrared Telescope Facility (2004)
Burgdorf, M., Meadows, V. S., Hoard, D., Marston, A. P., McCollum, B., Rebull, L. M., ...
RR Lyrae Stars and Anomalous Cepheids in the Draco Dwarf Spheroidal Galaxy (2002)
Kinemuchi, K., Smith, H. A., LaCluyze, A., Clark, C. L., Harris, H. C., Silbermann, N., ...
We present new results on RR Lyrae stars and anomalous Cepheids in the Draco dwarf spheroidal galaxy. We have increased the number of double-mode RR Lyrae stars and found three new anomalous...
The Interstellar Medium of Star-forming Irregular Galaxies: The View with ISO (2000)
Hunter, D., Kaufman, M., Hollenbach, D., Rubin, R., Malhotra, S., Dale, D., ...
We present mid-infrared imaging and far-infrared (FIR) spectroscopy of 5 IBm galaxies observed by ISO as part of our larger study of the inter- stellar medium of galaxies. Most of the irregulars in...
Probing the Interstellar Medium in Early type galaxies with ISO observations (2000)
Malhotra, S., Hollenbach, D., Helou, G., Silbermann, N., Valjavec, E., Rubin, R. H., ...
Four IRAS-detected early type galaxies were observed with ISO. With the exception of the 15 micron image of NGC1052, the mid-IR emission from NGC1052, NGC1155, NGC5866 and NGC6958 at 4.5, 7 and 15...
The Mid-Infrared Spectra of Normal Galaxies (2000)
Helou, G., Lu, N. Y., Werner, M. W., Malhotra, S., Silbermann, N.
The mid-infrared spectra (2.5 to 5 and 5.7 to 11.6 mu) obtained by ISO-PHOT reveal the interstellar medium emission from galaxies powered by star formation to be strongly dominated by the aromatic...
A Cepheid Distance to NGC 4603 in Centaurus (1999)
Newman, Jeffrey A., Zepf, Stephen E., Davis, Marc, Freedman, Wendy L., Madore, Barry F., Stetson, Peter B., ...
In an attempt to use Cepheid variables to determine the distance to the Centaurus cluster, we have obtained images of NGC 4603 with the Hubble Space Telescope on 9 epochs using WFPC2 and the F555W...
THE ASTROPHYSICAL JOURNAL, 543 : 634643, 2000 November 10 (1999)
The American Astronomical, S. Malhotra, D. Hollenbach, G. Helou, N. Silbermann, E. Valjavec, ...
Four IRAS-detected early-type galaxies were observed with the Infrared Space Observatory (ISO).
Madore, Barry F., Freedman, Wendy L., Silbermann, N., Harding, Paul, Huchra, John, Mould, Jeremy, ...
Using the Hubble Space Telescope (HST) 37 long-period Cepheid variables have been discovered in the Fornax Cluster spiral galaxy NGC 1365. The resulting V and I period-luminosity relations yield a...
A Cepheid Distance to the Fornax Cluster (1998)
Madore, B. F., Freedman, W. L., Silbermann, N., Harding, P., Huchra, J., Mould, J. R., ...
The Hubble Space Telescope is being used to measure accurate Cepheid distances to nearby galaxies with the ultimate aim of determining the Hubble constant, H_0. For the first time, it has become...
Kennicutt, R., Stetson, P., Saha, A., Kelson, D., Rawson, D., Sakai, S., ...
Uncertainty in the metal abundance dependence of the Cepheid variable period- luminosity (PL) relation remains one of the outstanding sources of systematic error in the extragalactic distance scale...
ISO measurements of [CII] line variations in galaxies (1997)
Malhotra, S., Helou, G., Stacey, G., Hollenbach, D., Lord, S., Beichman, C. A., ...
We report measurements of the [CII] fine structure line at 157.714 micron in 30 normal star-forming galaxies with the Long Wavelength Spectrometer (LWS) on the Infrared Space Observatory (ISO). The...