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Kazarian, M. A.; Karapetian, E. L.

doi:10.1023/a:1021855012813

Astrophysics

2002

DOI: 10.1023/a:1021855012813

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M. A. Kazarian

E. L. Karapetian

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2009

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Cited by 2 publications

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“…3e. It has been shown [14], however, that there are isolated regions in the galaxy in whose spectra the [NII] λλ6584, 6548 lines are observed.…”

mentioning

confidence: 99%

The morphological and spectral investigation of the galaxies Kaz 5, Kaz 92, and Kaz 390

Adibekyan¹,

Kazarian²,

Karapetian³

2009

Astrophysics

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The results of morphological and spectral study of the galaxies Kaz 5, Kaz 92, and Kaz 390 are presented. The observations were made on the 2.6-m telescope at the Byurakan Observatory with the VAGR microlenses spectrograph. Isophotes of the images of the galaxies are constructed in the α Í , [NII] 6584 λλ , 6548, and [SII] 6731 λλ , 6717 emission lines and in the continuum. The masses of Kaz 5 and Kaz 92 are determined to be ¤ M . 8 10 6 8 × and ¤ M .9 10 1 6 × , respectively. The mass of the gaseous component in the centers of regions I and IV of Kaz 390, which encompass a 1 pixel area, are also determined. The morphological structure of the central region of Kaz 5 in the observed spectral range, Å 6800 6400 − λλ, differs completely from the structure of the same part of the galaxy observed with the 6-m and 2.5-m telescopes. It is shown that these differences in the structure in images of Kaz 5 are mostly explained by the comparatively low resolution of the telescope in combination with the VAGR spectrograph. Absorbing matter also contributes to this effect. It is also shown that a "deficit" of nitrogen has been observed in the region of Kaz 390 studied here (a circle of diameter 40").

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“…3e. It has been shown [14], however, that there are isolated regions in the galaxy in whose spectra the [NII] λλ6584, 6548 lines are observed.…”

mentioning

confidence: 99%

The morphological and spectral investigation of the galaxies Kaz 5, Kaz 92, and Kaz 390

Adibekyan¹,

Kazarian²,

Karapetian³

2009

Astrophysics

Self Cite

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Searching in H i for Massive Low Surface Brightness Galaxies: Samples from HyperLeda and the UGC

O'Neil

Schneider

Driel

et al. 2023

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A search has been made for 21 cm H i line emission in a total of 350 unique galaxies from two samples whose optical properties indicate they may be massive. The first consists of 241 low surface brightness (LSB) galaxies of morphological type Sb and later selected from the HyperLeda database and the second consists of 119 LSB galaxies from the UGC with morphological types Sd-m and later. Of the 350 unique galaxies, 239 were observed at the Nançay Radio Telescope, 161 at the Green Bank Telescope, and 66 at the Arecibo telescope. A total of 295 (84.3%) were detected, of which 253 (72.3%) appear to be uncontaminated by any other galaxies within the telescope beam. Finally, of the total detected, uncontaminated galaxies, at least 31 appear to be massive LSB galaxies, with a total H i mass ≥ 1010 M ⊙, for H 0 = 70 kms−1 Mpc−1. If we expand the definition to also include galaxies with significant total (rather than just gas) mass, i.e., those with an inclination-corrected H i line width W 50,cor > 500 km s−1, this brings the total number of massive LSB galaxies to 41. There are no obvious trends between the various measured global galaxy properties, particularly between mean surface brightness and galaxy mass.

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Untitled

Cited by 2 publications

References 4 publications

The morphological and spectral investigation of the galaxies Kaz 5, Kaz 92, and Kaz 390

The morphological and spectral investigation of the galaxies Kaz 5, Kaz 92, and Kaz 390

Searching in H i for Massive Low Surface Brightness Galaxies: Samples from HyperLeda and the UGC

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