ASI Review Padova Scientific Activities 1

WP6200 : Padova Scientific Activities

Staff

Alberto Franceschini (AF) [Full Professor]

Giulia Rodighiero (GR) & Mattia Vaccari (MV) [Research Fellows]Gabriele Mainetti (GM) & Lucia Marchetti (LM) [PhD Students]

Elena Ricciardelli (ER) & Svetlana Starikova (SS) [PhD Students]

WP 6200.1 - Partecipazione alla Definizione dei KP in GT

WP 6200.2 – Partecipazione alla Preparazione dei KP in GT

WP 6200.3 – Sviluppo di algoritmi di riduzione dati e di modelli teorici

WP 6200.4 – Riduzione dati e analisi risultati

P(D) Analysis of Spitzer 70 micron Maps

ASI Review Padova ICC Contribution 2

P(D) (i.e. Probability of “Deflections”) analysis is a technique allowing the

extension of source counts below the confusion limit by modeling the effect of large numbers of unresolved sources on

background fluctuations.

The method was developed by Scheuer (1957) for use in the X Rays but later

extended to Radio & IR in 1970s.

In this phase we applied P(D) to the study of background fluctuations in Spitzer (FIDEL) 70 micron maps. We realized simulations based on our models of

extragalactic IR populations, which were found to fit measured P(D) extremely well.

We will now further test our implementation on Spitzer 24 and 160

micron maps and improve our treatment of noise and PSF for application to

Herschel maps.

Theoretical P(D)

Gaussian Noise

Convolution

Histograms are P(D) measurements inside three different aperture radii

Franceschini+ (2009)

ASI Review Padova Scientific Activities 3

SWIRE and the HerMES Pre-Launch DatabaseMulti-Wavelength Extragalactic IR Astronomy over >~50 deg2

SWIRE provides uninterrupted spectral coverage over the NIR/MIR as well as a pioneering exploration of the extragalactic FIR universe over the largest

areas. The availability of the SWIRE database is thus of the uttermost importance to achieve HerMES science goals. Under the auspices of the

HerMES consortium, Padova has been assembling the HerMES Pre-Launch database, spanning from the UV to the FIR and thus putting the SWIRE Final

Data Release into a wider context. This bridges the gap between Spitzer and Herschel but also ensures that HerMES early science will be supported

by reliable multi-wavelength data.

MIR/FIRSpectral Indices

ASI Review Padova Scientific Activities 4

Ancillary Observations of HERMES FieldsSpitzer Warm and Optical/NIR Imaging/Spectcroscopy

AF & MV are Co-Is of the 1400-hr Spitzer Warm SERVS program now obtaining IRAC 3.6 and 4.5 micron observations of ~20 deg2 within

SWIRE/HERMES fields 15 WHT nights approved to measure redshifts of MIPS 70&160 micron

sources Upcoming NOAO Survey Proposal for Optical/NIR Imaging/Spectroscopy

SERVS ES1 Test Data LABOCA ES1 870 micron Map

HerMES SDP Planning

ASI Review Padova Scientific Activities 5

SDP targets chosen for HerMES were chosen so as to suitably validate most HerMES AOTs AND provide a glimpse of HerMES science to come

HerMES SDP program strikes a balance between covered area and achievable depth, based on detailed estimates of the number sources to be detected and on an intimate knowledge of available ancillary data

PEP & HerMES SDP Papers

ASI Review Padova Scientific Activities 6

Detailed SDP paper allocation process undertaken within PEP & HErMES Giulia Rodighiero and Mattia Vaccari were eventually assigned the lead

of PEP “Specific Star Formation Rate vs Stellar Mass up to z~3” and HerMES “FIR/SMM Local (0<z<0.5) Luminosity Function”, respectively, recognizing their long–standing ICC and GT KP work

Herschel’s (Recent) History

Marseille 2009 HerMES

16th Feb 2009

Satellite in French Guiana

8th April 2009

Launcher on Launch Pad

15th April 2009

Satellite Fully Refueled

Launch on 14th May

Herschel’s First Light

Marseille 2009 HerMES

ASI Review Padova Scientific Activities 9

Long-Wavelength Cosmological Surveysin the Era of the Great Observatories

Padova has been involved into long-wavelength studies of extragalactic populations since the 1980s and has consistently

contributed to large-area survey projects carried out with IRAS, ISO, Spitzer and now Herschel

SWIRE ~ 50 ☐2

SWIRE Fields

observed by Spitzer & to be

observed by Herschel GT KPs

(PER & HERMES)

interplay of deep and shallow

observations in “nested” surveys

Where do we go from here?

Over the last 3 years Padova has been consistently Contributing to SW development and testing effort by PACS and SPIRE

ICCs Working on defining and planning for PACS and HERMES GT KPs

In particular, we’ve been extensively contributing to PACS/SPIRE DP testing and SPIRE GUI Development Defining in detail Herschel Extragalactic Surveys “Wedding Cake” Planning and scheduling HerMES Herschel observations Obtaining essential ancillary data within HerMES Fields

Consequently we’ve been Assuming a prominent role within HerMES and PEP KP teams Assigned the lead of HerMES and PEP SDP papers Fostering collaborations with colleagues old and new Placing ourselves in an ideal position to best exploit Herschel data

ASI Review Padova ICC Contribution 10