Advanced search    

Search: authors:"W. K. Huchtmeier"

10 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

HI observations of nearby galaxies - I. The first list of the Karachentsev catalog

We present HI observations of the galaxies in the first list of the Karachentsev catalog of previously unknown nearby dwarf galaxies (Karachentseva & Karachentsev 1998). This survey covers all known nearby galaxy groups within the Local Volume (i.e. within 10 Mpc) and their environment, that is about 25% of the total sky. A total of 257 galaxies have been observed with a...

The AMIGA sample of isolated galaxies - VIII. The rate of asymmetric H i profiles in spiral galaxies

Context. Measures of the H i properties of a galaxy are among the most sensitive interaction diagnostic at our disposal. We report here on a study of H i profile asymmetries (e.g., lopsidedness) in a sample of some of the most isolated galaxies in the local Universe. This presents us with an excellent opportunity to quantify the range of intrinsic H i asymmetries in galaxies (i.e...

Disturbed isolated galaxies: indicators of a dark galaxy population?

We report the results of our search for disturbed (interacting) objects among very isolated galaxies. The inspections of 1050 northern isolated galaxies from KIG and 500 nearby, very isolated galaxies situated in the Local Supercluster yielded five and four strongly disturbed galaxies, respectively. We suggest that the existence of “dark” galaxies explains the observed signs of...

The HI supershell GS061+00+51 and its neighbours

We describe Hi observations of a field in the Milky Way centered on , made by the Effelsberg radiotelescope. The field contains one previously identified Hi supershell, GS061+00+51 (Heiles [CITE]); apart from it we find several new structures. We also study the Hi distribution in the vicinity of four Hii regions, S86, S87, S88 and S89. We confirm the existence of the shell GS061...

An optically directed HI search for new dwarf members of the M 81 group

We present a search for neutral hydrogen (HI) emission from optically identified dwarf galaxy candidates in the larger M 81 group area. Of 136 candidates, 68 galaxies have been detected (this corresponds to a detection rate of ~ 49%). Most of the detected galaxies are background objects and fail to be classified as dwarfs. Many known dwarfs in the M 81 group have been detected...

H i observations of two molecular clouds with extremely large velocity dispersions

next section we describe the observational details, and Section 3 contains the results and a comparison with the R 49 750 H. Riffert, P. Kumar and W K. Huchtmeier 7 . 4. CO observations. The main

An H  i line search for optically identified dwarf galaxy candidates in the M 81 group

Sensitive 21 cm H I  line observations were performed for 23 dwarf members and possible members of the nearby M 81 group of galaxies, including five objects of a clustering of extremely low-surface brightness objects of unknown nature. With the Nançay decimetric radio telescope the radial velocity range of -529 to 1826  was searched to an rms noise of . Only three objects were...

An H  i line search for optically identified dwarf galaxy candidates in the M 81 group

Sensitive 21 cm H I  line observations were performed for 23 dwarf members and possible members of the nearby M 81 group of galaxies, including five objects of a clustering of extremely low-surface brightness objects of unknown nature. With the Nançay decimetric radio telescope the radial velocity range of -529 to 1826  was searched to an rms noise of . Only three objects were...

A search for intergalactic clouds of neutral hydrogen

The central areas of de Vaucouleurs' groups NGC 1023 and CVn II have been searched for intergalactic H I clouds with the 25-m Dwingeloo and 100-m Effelsberg radio telescopes, but none were detected. If the clouds have properties similar to those found in the Sculptor group, the search yields upper limits of 4 and 2.6 × 108 M⊙ respectively for the mass of an individual cloud in...