Abstract. The CO Tully-Fisher Relation for the Virgo Cluster
نویسنده
چکیده
A comparison between the CO and HI Tully-Fisher relation for a sample of 30 Virgo galaxies shows no significant difference concerning the intrinsic scatter. The distance moduli from both relations after correcting for the sample incompleteness bias agree within the errors and also show no significant difference with previous studies of the Virgo cluster using a complete sample. The CO total linewidth and the CO flux were found to be not well correlated. However, if the distances to the individual galaxies were calculated by the CO Tully-Fisher relation, the CO luminosities calculated using these distances are correlated with the CO linewidths. This correlation does not show up when the distances were calculated by the conventional HI Tully-Fisher relation. Finally we give the structure of the cluster as derived from this small subsample using the distances to the individual galaxies. The large depth of the cluster is confirmed both by the HI and the CO Tully-Fisher relation.
منابع مشابه
The CO Tully-Fisher relation for the Virgo cluster
A comparison between the CO and HI Tully-Fisher relation for a sample of 30 Virgo galaxies shows no significant difference concerning the intrinsic scatter. The distance moduli from both relations after correcting for the sample incompleteness bias agree within the errors and also show no significant difference with previous studies of the Virgo cluster using a complete sample. The CO total lin...
متن کاملa st ro - p h / 93 07 02 1 v 1 1 3 Ju l 1 99 3 The Infrared Tully - Fisher Relation in the Ursa Major Cluster
We present new magnitudes derived from 1.65 µm images for 23 galaxies in the Ursa Major cluster. Magnitudes now exist for all but one spiral meeting our criteria for cluster membership and having H i velocity width greater than 187 km s −1 and inclination greater than 45 •. These spirals fit a Tully-Fisher relation with dispersion in intrinsic magnitudes (after known observational uncertainties...
متن کاملThe Tully – Fisher Relation and H ◦
The use of the Tully–Fisher (TF) relation for the determination of H◦ relies on the availability of an adequate template TF relation and of reliable primary distances. Here we use a TF template relation with the best available kinematical zero–point, obtained from a sample of 24 clusters of galaxies extending to cz ∼ 9, 000 km s , and the most recent set of Cepheid distances for galaxies fit fo...
متن کاملA linear near-IR Tully-Fisher relation for giant and dwarf late-type galaxies
We present the near-IR (K′-band, i.e.: λ = 2.1 μm) Tully-Fisher (TF) relation for a sample of 50 giant and dwarf late-type galaxies, selected from the Virgo Cluster Catalogue. We find that L ∝ V 4 Max along a range of 8 K′-mag for galaxies with different Hubble types (from Sa to Im-BCD), phenomenologies, structures, star-formation histories, masses, dark-to-luminous mass ratios, metallicities a...
متن کاملThe I–Band Tully–Fisher Relation and the Hubble Constant
The application of the I band Tully–Fisher relation towards determining the Hubble constant is reviewed, with particular attention to the impact of scatter and bias corrections in the relation. A template relation is derived from galaxies in 24 clusters. A subset of 14 clusters with cz ∼ 4000 to 9000 km s is used as an inertial frame to define the velocity zero point of the relation. Twelve gal...
متن کامل