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We present a statistical analysis of halo emission for a sample of 1047 edge-on disk galaxies imaged in five bands by the Sloan Digital Sky Survey (SDSS). Stacking the homogeneously rescaled images of the galaxies, we can measure surface…

Astrophysics · Physics 2009-09-25 Stefano Zibetti , Simon D. M. White , Jon Brinkmann

Deep surface photometry of disk galaxies at optical and near-IR wavelengths have revealed faint halos with colours much too red to be reconciled with the resolved stellar populations detected in the halos of the Milky Way or M31.…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-18 E. Zackrisson , G. Micheva

We study the faint stellar halo of isolated central galaxies, by stacking galaxy images in the HSC survey and accounting for the residual sky background sampled with random points. The surface brightness profiles in HSC $r$-band are…

Using SDSS Stripe82 data we have obtained deep radial surface brightness profiles of 7 face-on to intermediate inclined late-type spirals down to \sim 30 mag arcsec^-2 in the r'-band. We do not find any evidence for a sharp cut-off of the…

Cosmology and Nongalactic Astrophysics · Physics 2012-04-16 Judit Bakos , Ignacio Trujillo

Deep optical/near-IR surface photometry of galaxies outside the Local Group have revealed faint and very red halos around objects as diverse as disk galaxies and starbursting dwarf galaxies. The colours of these structures are too extreme…

Astrophysics · Physics 2009-11-13 E. Zackrisson , N. Bergvall , C. Flynn , G. Ostlin , G. Micheva , B. Caldwell

We analyse the detailed structure of a highly-inclined (i>~80 degrees) disc galaxy which lies within the Hubble Ultra Deep Field (UDF). The unprecedented depth of the UDF data allow disc and extraplanar emission to be reliably traced to…

Astrophysics · Physics 2009-11-10 Stefano Zibetti , Annette M. N. Ferguson

We study the properties of massive galaxies at an average redshift of z~0.34 through stacking more than 42000 images of Luminous Red Galaxies from the Sloan Digital Sky Survey. This is the largest dataset ever used for such an analysis and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Tomer Tal , Pieter van Dokkum

Surface photometry detections of red and exceedingly faint halos around galaxies have resurrected the old question of whether some non-negligible fraction of the missing baryons of the Universe could be hiding in the form of faint,…

Astrophysics · Physics 2009-11-13 E. Zackrisson , C. Flynn

Red halos are faint, extended and extremely red structures that have been reported around various types of galaxies since the mid-1990s. The colours of these halos are too red to be reconciled with any hitherto known type of stellar…

Cosmology and Nongalactic Astrophysics · Physics 2009-03-02 E. Zackrisson , G. Micheva , N. Bergvall , G. Ostlin

Models of galaxy formation in a cosmological context predict that massive disk galaxies should have structured extended stellar halos. Recent studies in integrated light, however, report a few galaxies, including the nearby disk galaxy…

Astrophysics of Galaxies · Physics 2020-05-06 In Sung Jang , Roelof S. de Jong , Benne W. Holwerda , Antonela Monachesi , Eric F. Bell , Jeremy Bailin

We study the stellar haloes of galaxies out to 70-100 kpc as a function of stellar mass and galaxy type by stacking aligned $r$ and $g$ band images from a sample of 45508 galaxies from SDSS DR9 in the redshift range $0.06\,\le\,z\,\le\,0.1$…

Astrophysics of Galaxies · Physics 2015-06-19 R. D'Souza , G. Kauffmann , J. Wang , S. Vegetti

Optical and near-IR observations of the halos of disk galaxies and blue compact galaxies have revealed a very red spectral energy distribution, which cannot easily be reconciled with a normal, metal-poor stellar population like that in the…

Astrophysics · Physics 2008-11-26 E. Zackrisson , N. Bergvall , G. Ostlin , G. Micheva , M. Leksell

We present B, R, and Halpha imaging data of 19 large disk galaxies whose properties are intermediate between classical low surface brightness galaxies and ordinary high surface brightness galaxies. We use data taken from the Lowell 1.8m…

Astrophysics · Physics 2009-11-13 K. O'Neil , S. Oey , G. Bothun

We consider a thickness of stellar disks of late-type galaxies by analyzing the R and K_s band photometric profiles for two independent samples of edge-on galaxies. The main goal is to verify a hypotesis that a thickness of old stellar…

Astrophysics · Physics 2009-11-07 A. V. Zasov , D. V. Bizyaev , D. I. Makarov , N. V. Tyurina

We present surface photometry results for a sample of eleven edge-on galaxies observed with the 6m telescope at the Special Astrophysical Observatory (Russia). The photometric scale length, scale height, and central surface brightness of…

Astrophysics · Physics 2009-11-10 Dmitry Bizyaev , Serafim Kajsin

Using dark matter halos traced by galaxy groups selected from the Sloan Digital Sky Survey Data Release 4, we find that about 1/4 of the faint galaxies ($\rmag >-17.05$, hereafter dwarfs) that are the central galaxies in their own halo are…

We investigate which conditions of dust attenuation and stellar populations allow models of dusty, continuously star-forming, bulge-less disk galaxies at 0.8<z<3.2 to meet the different colour selection criteria of high-z ``red'' galaxies…

Astrophysics · Physics 2009-11-13 D. Pierini , C. Maraston , K. D. Gordon , A. N. Witt

We present the results of an analysis of Pan-STARRS1 Medium Deep Survey multi-band (g,r,i,z,y) images of a sample of 698 low-redshift disk galaxies that span broad ranges in stellar mass, star-formation rate, and bulge/disk ratio. We use…

We conduct spectral observations of 138 superthin galaxies (STGs) with high radial-to-vertical stellar disk scales ratio with the Dual Imaging Spectrograph (DIS) on the 3.5m telescope at the Apache Point Observatory (APO) to obtain the…

Astrophysics of Galaxies · Physics 2021-06-30 Dmitry Bizyaev , D. I. Makarov , V. P. Reshetnikov , A. V. Mosenkov , S. J. Kautsch , A. V. Antipova

The existence of stellar halos around galaxies is a natural prediction of the hierarchical nature of the LambdaCDM model. Recent observations of Milky Way-like galaxies have revealed a wide range in stellar halo mass, including cases with…

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