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J/A+AS/145/405 Box- and peanut-shaped bulges. I. (Luetticke+, 2000)
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Box- and peanut-shaped bulges. I. Statistics.
Luetticke R., Dettmar R.-J., Pohlen M.
<Astron. Astrophys. Suppl. Ser. 145, 405 (2000)>
=2000A&AS..145..405L (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxies, optical ; Galaxy catalogs ; Morphology
Keywords: galaxies: bulge - galaxies: spiral and lenticular -
galaxies: statistics - galaxies: structure
Description:
BUTY presents in its main part (table 6) a classification for bulges
of a complete sample of 1224 edge-on disk galaxies (D_25_>2arcmin,
logR_25_>0.35 for S0/a-Sd galaxies and log R_25_>0.30 for S0 galaxies)
derived from the RC3 (Third Reference Catalogue of Bright Galaxies, de
Vaucouleurs et al., 1991, Cat. <VII/155>). Using the Digitized Sky
Survey (DSS), the bulge shape is visually classified in three types of
box- and peanut-shaped (b/p) bulges or as an elliptical type. The
extension of BUTY (table 7) contains the classification of bulges of
additional 83 galaxies, which do not fulfill the selection criterion
of our RC3 sample. They are observed with CCD images (optical or NIR)
or are investigated in previous studies about b/p bulges.
Abstract:
NIR observations reveal that dust extinction does almost not influence
the shape of bulges. There is no substantial difference between the
shape of bulges in the optical and in the NIR. Our analysis reveals
that 45% of all bulges are box- and peanut-shaped (b/p). The frequency
of b/p bulges for all morphological types from S0 to Sd is >40%. In
particular, this is for the first time that such a large frequency of
b/p bulges is reported for galaxies as late as Sd. The fraction of the
observed b/p bulges is large enough to explain the origin of b/p
bulges by a barred potential (Luetticke et al., 2000, A&A, accepted).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 70 1224 List of galaxies in the RC3-sample with
bulge classification
table7.dat 72 82 List of additional galaxies with
bulge classification
tables.tex 117 1694 LaTeX version of the tables
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See also:
VII/155 : Third Reference Cat. of Bright Galaxies (RC3) (de Vaucouleurs+ 1991)
VII/115 : Surface Photometry Cat. of ESO-Uppsala Galaxies (Lauberts+, 1989)
Byte-by-byte Description of file: table6.dat table7.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Object *Galaxy name
15- 16 I2 h RAh Right Ascension 2000 (hours)
18- 19 I2 min RAm *Right Ascension 2000 (minutes)
21 A1 --- DE- Sign of declination
22- 23 I2 deg DEd Declination 2000 (degrees)
25- 26 I2 arcmin DEm *Declination 2000 (minutes)
28- 30 F3.1 --- Bulge *Bulge shape classification
32 A1 --- Run *Observing run
34- 36 F3.1 --- NIR *? Bulge type in the NIR
38- 51 A14 --- Detec *Earlier detections
53- 56 F4.1 --- T ? Hubble stage
58 I1 --- r_T *? Source of T
60- 63 F4.2 0.1arcmin logD25 Isophotal diameter
65 I1 --- r_logD25 *? Source of D_25_
67- 70 F4.2 --- logR25 R_25_ = a/b (axis ratio)
72 I1 --- r_logR25 *? Source of R_25_
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Note on Object:
Principal name of the galaxy using following order:
NGC, IC, ESO, UGC, MCG, UGCA, and PGC.
NGC 2788A = ESO 60- 24 (NGC number is not in RC3, <VII/155>).
UGC 10610 = MCG 7-35- 4 (UGC number is not in RC3, <VII/155>).
NGC 6737 is listed in de Souza & dos Anjos (1987A&AS...70..465D) as
class I galaxy, but NGC 6737 is not a galaxy.
Note on RAm and DEm:
Minutes are not rounded.
Note on Bulge:
1: peanut-shaped bulge
1.5: bulge which is on one side boxy and on the other peanut-shaped
2: box-shaper bulge
3: bulge is close to box-shaped, nor elliptical
4: elliptical bulge
5: unclassifiable bulge because:
5.1: Inclination is to far away from edge-on
5.2: Stars in the foreground projected onto bulge
5.3: Galaxy is strongly perturbed
5.4: Dust conceals the shape of the bulge
5.5: Bulge is too small
5.6: Signal-to-noise of the image is too low
Note on Run:
Optical CCD observations.
a: Calar Alto, 1.2m, 1996
b: ESO/La Silla, 0.9m, 1998
c: ESO/La Silla, 1.54m, 1996, 1998
d: ESO/La Silla, 2.2m, 1985, 1987, 1990
e: ESO/La Silla, NTT, 1991
f: Lowell, 1.06m, 1989, 1990
g: ESO/ST-ECF Archive, VLT, 1999
Note on NIR:
For details of the observations cf. Luetticke et al. (2000, A&A, accepted)
Note on Detec:
J P: Jarvis (1986AJ.....91...65J), peanut-shaped
J B: Jarvis (1986AJ.....91...65J), box-shaped
SA I: de Souza & dos Anjos (1987A&AS...70..465D), class I
SA II: de Souza & dos Anjos (1987A&AS...70..465D), class II
SA III: de Souza & dos Anjos (1987A&AS...70..465D), class III
S: Shaw (1987MNRAS.229..691S)
SDB: Shaw et al. (1990A&AS..240...36S) (only literature sample)
Sh: Shaw (1993MNRAS.261..718S) (only galaxies not listed in S)
Note on r_T, r_logD25, r_logR25 :
Values from RC3 (<VII/155>), except
1: Skiff (priv. communication 1999)
2: Own classification, only bulges of type 5
(checked by 12 galaxies classified by Skiff, T_{skiff} - T_{own} < |1|)
3: NGC 3079: Morphological type (SBS5) differs from T (7.0)
(both RC3, Cat. <VII/155>).
4: UGC 8032: Morphological type from Skiff and Haynes et al.
(1990AJ.....99.1740H). The T value of Haynes et al. is based on
Kraan-Korteweg (1982A&AS...47..505K) who refers to a priv.
communication with Sandage (1980). Yasuda et al. (1995ApJS...96..359Y,
1997ApJS..108..417Y) gave a wrong classification T=5. In 1995 they
refer to VCC (Binggeli et al., 1985AJ.....90.1681B) and in 1997 to
RC3 (Cat. <VII/155>), but in both catalogues the type of UGC 8032
is not listed.
5: "The Surface Photometry Catalogue of the ESO-Uppsala Galaxies"
(Lauberts & Valentijn, 1989, Cat. <VII/115>)
6: NASA Extragalactic Database (NED)
7: "The ESO/Uppsala Survey of the ESO (B) Atlas"
(Lauberts, 1982, Cat. <VII/34>)
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Acknowledgements: Rainer Luetticke <luett@astro.ruhr-uni-bochum.de>
Author's address:
Rainer Luetticke
Astronomisches Institut der Ruhr-Universitaet Bochum
D-44780 Bochum
Germany
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(End) Rainer Luetticke [Univ. Bochum], Patricia Bauer [CDS] 29-Aug-2000