J/A+A/691/A161 CAVITY. First public data release (Garcia-Benito+, 2024)
CAVITY: Calar Alto Void Integral-field Treasury surveY.
I. First public data release.
Garcia-Benito R., Jimenez A., Sanchez-Menguiano L., Ruiz-Lara T.,
Duarte Puertas S., Dominguez-Gomez J., Bidaran B., Torres-Rios G.,
Argudo-Fernandez M., Espada D., Perez I., Verley S., Conrado A.M.,
Florido E., Rodriguez M.I., Zurita A., Alcazar-Laynez M., De Daniloff S.B.,
Lisenfeld U., van de Weygaert R., Courtois H.M., Falcon-Barroso J.,
Ferre-Mateu A., Galbany L., Gonzalez Delgado R.M., del Moral-Castro I.,
Peletier R.F., Roman J., Sanchez S.F., Sanchez-Alarcon P.M.,
Sanchez-Blazquez P., Villalba-Gonzalez P., Azzaro M., Blazek M.,
Fernandez A., Gallego J., Gongora S., Guijarro A., De Guindos E.,
Hermelo I., Hernandez R., de Juan E., Vico Linares J.I.
<Astron. Astrophys. 691, A161 (2024)>
=2024A&A...691A.161G 2024A&A...691A.161G (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Galaxies ; Spectroscopy
Keywords: techniques: imaging spectroscopy - techniques: spectroscopic -
surveys - galaxies: evolution - galaxies: general
Abstract:
The Calar Alto Void Integral-field Treasury surveY (CAVITY) is a
legacy project aimed at characterising the population of galaxies
inhabiting voids, which are the most under-dense regions of the cosmic
web, located in the Local Universe. This paper describes the first
public data release (DR1) of CAVITY, comprising science-grade optical
data cubes for the initial 100 out of a total of ∼300 galaxies in the
Local Universe (0.005<z<0.050). These data were acquired using the
integral-field spectrograph PMAS/PPak mounted on the 3.5m telescope at
the Calar Alto observatory. The DR1 galaxy sample encompasses diverse
characteristics in the color-magnitude space, morphological type,
stellar mass, and gas ionisation conditions, providing a rich resource
for addressing key questions in galaxy evolution through spatially
resolved spectroscopy. The galaxies in this study were observed with
the low-resolution V500 set-up, spanning the wavelength range
3745-7500Å, with a spectral resolution of 6.0Å (FWHM). Here, we
describe the data reduction and characteristics and data structure of
the CAVITY datasets essential for their scientific utilisation,
highlighting such concerns as vignetting effects, as well as the
identification of bad pixels and management of spatially correlated
noise. We also provide instructions for accessing the CAVITY datasets
and associated ancillary data through the project's dedicated
database.
Description:
The CAVITY project focuses on identifying and characterising cosmic
voids in the nearby Universe, drawing its sample from the SDSS data
cataloged by Pan et al. (2012MNRAS.421..926P 2012MNRAS.421..926P).
All DR1 CAVITY galaxies are observed using the V500 grating. It offers
a nominal resolution of λ/δλ∼850 at ∼5000Å with
a full width at half maximum (FWHM) of about 6Å.
CAVITY DR1 comprises cubes and catalogs containing essential variables
and derived physical properties for 100 CAVITY galaxies within 15
voids. All the cubes and catalogs of this public data release are
available on the survey's dedicated web page, cavity.caha.es.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 57 100 List of galaxies
table4.dat 122 100 Values of the quality control flags on the
observing conditions defined for the CAVITY DR1
sample based in the automatic checks described
in Section 6.2
fits/* . 100 Individual fits cubes
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See also:
https://cavity.caha.es/data/dr1 : CAVITY DR1 Home Page
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- CAVITY CAVITY identification number
7- 16 F10.6 deg RAdeg Right ascension (J2000)
18- 26 F9.6 deg DEdeg Declination (J2000)
28- 57 A30 --- FileName Name of the fits cube in subdirectory fits
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [CAVITY]
7- 11 I5 --- CAVITY Galaxy CAVITY identification number
(Name)
13- 16 F4.2 --- AirMass Mean observed airmass
(obsairmassmean)
18- 21 F4.2 --- AirMassMax Maximum observed airmass
(obsairmassmax)
23- 26 F4.2 --- e_AirMass rms uncertainty on airmass
(obsairmassrms)
28- 32 F5.2 mag/arcsec2 Skymag Mean observed sky brightness
(obsskymagmean)
34- 37 F4.2 mag/arcsec2 e_Skymag rms uncertainty on observed sky
brightness (obsskymagrms)
39- 42 F4.2 mag Ext Observed atmospheric extinction
(obsextmean)
44- 47 F4.2 mag ExtMax Maximum observed atmospheric
extinction (obsextmax)
49- 52 F4.2 mag e_Ext rms uncertainty on observed
atmospheric extinction (obsextrms)
54- 58 F5.2 ct StLi Mean strylight
(redmeanstraylightmax)
60- 64 F5.2 ct StLimax Maximum strylight
(redmaxstraylightmax)
66- 70 F5.2 ct e_StLi rms uncertainty on mean strylight
(redrmsstraylightmax)
72- 75 F4.2 0.1nm SpDisp Mean spectral dispersion
(reddispmean)
77- 81 F5.2 0.1nm SpDispmax Maximum spectral dispersion
(reddispmax)
83- 86 F4.2 0.1nm e_SpDisp rms uncertainty on mean spectral
dispersion in red part (reddisprms)
88- 91 F4.2 pix SpcDisp Mean cross dispersion
(redcdispmean)
93- 96 F4.2 pix SpcDispmax Maximun cross dispersion
(redcdispmax)
98-101 F4.2 pix e_SpcDisp rms uncertainty on mean cross
dispersion (redcdisprms)
103-107 F5.2 ct SkySubsmin Minimum sky substraction
(redres5577min)
109-112 F4.2 ct SkySubsmax Maximum sky substraction
(redres5577max)
114-117 F4.2 ct SkySubsrms rms on sky substraction
(redrmsres5577max)
119-122 F4.2 --- Calib Spectrophotometric calibration
(calspecphotfluxratio)
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History:
From https://cavity.caha.es/data/dr1
(End) Patricia Vannier [CDS] 14-Apr-2025