Detection of a second optical component in the H I cloud of the young dwarf galaxy SBS 0335-052: New observations with the 6-m telescope

S.A. Pustil'nik; V.A. Lipovetsky; Y.I. Izotov; E. Brinks; T.X. Thuan; A.Y. Knyazev; S. I. Neizvestnyi; A. V. Ugryumov

Detection of a second optical component in the H I cloud of the young dwarf galaxy SBS 0335-052: New observations with the 6-m telescope

S.A. Pustil'nik, V.A. Lipovetsky, Y.I. Izotov, E. Brinks, T.X. Thuan, A.Y. Knyazev, S. I. Neizvestnyi, A. V. Ugryumov

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Abstract

The Blue Compact Dwarf (BCD) galaxy SBS 0335–052 is one of the most metal–deficient galaxies known and one of the best candidates for a young dwarf galaxy in the process of formation. A VLA HI map reveals an unusual structure: the neutral gas is distributed in a very extended disk, about 15 times larger than the Holmberg optical diameter of the BCG. There are two peaks of high density. The eastern peak is close to the position of SBS 0335–052 whereas the western HI peak is associated with a faint compact optical galaxy.
A 6–m telescope spectrum of this object shows H, H, and [OIII]5007 emission with a redshift close to that of SBS 0335–052. We suggest that it may be a young and chemically unevolved dwarf galaxy.

Original language	English
Pages (from-to)	308-311
Number of pages	4
Journal	Astronomy Letters
Volume	23
Publication status	Published - 1 May 1997

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title = "Detection of a second optical component in the H I cloud of the young dwarf galaxy SBS 0335-052: New observations with the 6-m telescope",

abstract = "The Blue Compact Dwarf (BCD) galaxy SBS 0335–052 is one of the most metal–deficient galaxies known and one of the best candidates for a young dwarf galaxy in the process of formation. A VLA HI map reveals an unusual structure: the neutral gas is distributed in a very extended disk, about 15 times larger than the Holmberg optical diameter of the BCG. There are two peaks of high density. The eastern peak is close to the position of SBS 0335–052 whereas the western HI peak is associated with a faint compact optical galaxy. A 6–m telescope spectrum of this object shows H, H, and [OIII]5007 emission with a redshift close to that of SBS 0335–052. We suggest that it may be a young and chemically unevolved dwarf galaxy.",

author = "S.A. Pustil'nik and V.A. Lipovetsky and Y.I. Izotov and E. Brinks and T.X. Thuan and A.Y. Knyazev and Neizvestnyi, {S. I.} and Ugryumov, {A. V.}",

year = "1997",

month = may,

day = "1",

language = "English",

volume = "23",

pages = "308--311",

journal = "Astronomy Letters",

issn = "1562-6873",

publisher = "Pleiades Publishing",

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TY - JOUR

T1 - Detection of a second optical component in the H I cloud of the young dwarf galaxy SBS 0335-052

T2 - New observations with the 6-m telescope

AU - Pustil'nik, S.A.

AU - Lipovetsky, V.A.

AU - Izotov, Y.I.

AU - Brinks, E.

AU - Thuan, T.X.

AU - Knyazev, A.Y.

AU - Neizvestnyi, S. I.

AU - Ugryumov, A. V.

PY - 1997/5/1

Y1 - 1997/5/1

N2 - The Blue Compact Dwarf (BCD) galaxy SBS 0335–052 is one of the most metal–deficient galaxies known and one of the best candidates for a young dwarf galaxy in the process of formation. A VLA HI map reveals an unusual structure: the neutral gas is distributed in a very extended disk, about 15 times larger than the Holmberg optical diameter of the BCG. There are two peaks of high density. The eastern peak is close to the position of SBS 0335–052 whereas the western HI peak is associated with a faint compact optical galaxy. A 6–m telescope spectrum of this object shows H, H, and [OIII]5007 emission with a redshift close to that of SBS 0335–052. We suggest that it may be a young and chemically unevolved dwarf galaxy.

AB - The Blue Compact Dwarf (BCD) galaxy SBS 0335–052 is one of the most metal–deficient galaxies known and one of the best candidates for a young dwarf galaxy in the process of formation. A VLA HI map reveals an unusual structure: the neutral gas is distributed in a very extended disk, about 15 times larger than the Holmberg optical diameter of the BCG. There are two peaks of high density. The eastern peak is close to the position of SBS 0335–052 whereas the western HI peak is associated with a faint compact optical galaxy. A 6–m telescope spectrum of this object shows H, H, and [OIII]5007 emission with a redshift close to that of SBS 0335–052. We suggest that it may be a young and chemically unevolved dwarf galaxy.

M3 - Article

SN - 1562-6873

VL - 23

SP - 308

EP - 311

JO - Astronomy Letters

JF - Astronomy Letters

ER -

Detection of a second optical component in the H I cloud of the young dwarf galaxy SBS 0335-052: New observations with the 6-m telescope

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