Bulges and discs of spiral galaxies: edge-on perspective

Research output: Contribution to journalArticleResearch

Abstract

We present a sample of edge-on spiral galaxies both of early and late types.The sample consists of 175 galaxies in the Ks-filter, 169 galaxies in the H-filter and 165 galaxies in the J-filter. Bulge and disc decompositions of each galaxy image, taken from the Two Micron All Sky Survey (2MASS), were performed. We discuss several scaling relations for bulges and discs which indicate a tight link between their formation and evolution. We show that galaxies with bulges fitted by the Sersic index n=2 bulges (classical bulges). First of all, the distribution of the apparent bulge axis ratio q_b for the subsample with n=2 bulges seem to be oblate spheroids with moderate flattening. Secondly, the Photometric Plane of the sample bulges is not flat and has a prominent curvature towards small values of n. Thirdly, despite of the existence of a clear rel
Original languageEnglish
Pages (from-to)325-334
JournalAstronomical and Astrophysical Transactions. Journal of the Eurasian Astronomical Society
Volume27
Issue number2
StatePublished - 2012

Keywords

  • Galaxies: infrared, photometry
  • Spiral edge-on galaxies
  • Fundamental parameters

Cite this

@article{96d0badb015143a4b8c4d2ec2882e2c6,
title = "Bulges and discs of spiral galaxies: edge-on perspective",
abstract = "We present a sample of edge-on spiral galaxies both of early and late types.The sample consists of 175 galaxies in the Ks-filter, 169 galaxies in the H-filter and 165 galaxies in the J-filter. Bulge and disc decompositions of each galaxy image, taken from the Two Micron All Sky Survey (2MASS), were performed. We discuss several scaling relations for bulges and discs which indicate a tight link between their formation and evolution. We show that galaxies with bulges fitted by the Sersic index n=2 bulges (classical bulges). First of all, the distribution of the apparent bulge axis ratio q_b for the subsample with n=2 bulges seem to be oblate spheroids with moderate flattening. Secondly, the Photometric Plane of the sample bulges is not flat and has a prominent curvature towards small values of n. Thirdly, despite of the existence of a clear rel",
keywords = "Galaxies: infrared, photometry, Spiral edge-on galaxies, Fundamental parameters",
author = "N.Ya. Sotnikova and V.P. Reshetnikov and A.V. Mosenkov",
year = "2012",
language = "English",
volume = "27",
pages = "325--334",
journal = "Astronomical and Astrophysical Transactions",
issn = "1055-6796",
publisher = "Cambridge Scientific Publishers",
number = "2",

}

Bulges and discs of spiral galaxies: edge-on perspective. / Sotnikova, N.Ya.; Reshetnikov, V.P.; Mosenkov, A.V.

In: Astronomical and Astrophysical Transactions. Journal of the Eurasian Astronomical Society, Vol. 27, No. 2, 2012, p. 325-334.

Research output: Contribution to journalArticleResearch

TY - JOUR

T1 - Bulges and discs of spiral galaxies: edge-on perspective

AU - Sotnikova, N.Ya.

AU - Reshetnikov, V.P.

AU - Mosenkov, A.V.

PY - 2012

Y1 - 2012

N2 - We present a sample of edge-on spiral galaxies both of early and late types.The sample consists of 175 galaxies in the Ks-filter, 169 galaxies in the H-filter and 165 galaxies in the J-filter. Bulge and disc decompositions of each galaxy image, taken from the Two Micron All Sky Survey (2MASS), were performed. We discuss several scaling relations for bulges and discs which indicate a tight link between their formation and evolution. We show that galaxies with bulges fitted by the Sersic index n=2 bulges (classical bulges). First of all, the distribution of the apparent bulge axis ratio q_b for the subsample with n=2 bulges seem to be oblate spheroids with moderate flattening. Secondly, the Photometric Plane of the sample bulges is not flat and has a prominent curvature towards small values of n. Thirdly, despite of the existence of a clear rel

AB - We present a sample of edge-on spiral galaxies both of early and late types.The sample consists of 175 galaxies in the Ks-filter, 169 galaxies in the H-filter and 165 galaxies in the J-filter. Bulge and disc decompositions of each galaxy image, taken from the Two Micron All Sky Survey (2MASS), were performed. We discuss several scaling relations for bulges and discs which indicate a tight link between their formation and evolution. We show that galaxies with bulges fitted by the Sersic index n=2 bulges (classical bulges). First of all, the distribution of the apparent bulge axis ratio q_b for the subsample with n=2 bulges seem to be oblate spheroids with moderate flattening. Secondly, the Photometric Plane of the sample bulges is not flat and has a prominent curvature towards small values of n. Thirdly, despite of the existence of a clear rel

KW - Galaxies: infrared, photometry

KW - Spiral edge-on galaxies

KW - Fundamental parameters

M3 - Article

VL - 27

SP - 325

EP - 334

JO - Astronomical and Astrophysical Transactions

JF - Astronomical and Astrophysical Transactions

SN - 1055-6796

IS - 2

ER -